CN107227387A - Quick reduction reactor and the quick reduction reaction system and method for water-cooled miberal powder - Google Patents
Quick reduction reactor and the quick reduction reaction system and method for water-cooled miberal powder Download PDFInfo
- Publication number
- CN107227387A CN107227387A CN201710614263.5A CN201710614263A CN107227387A CN 107227387 A CN107227387 A CN 107227387A CN 201710614263 A CN201710614263 A CN 201710614263A CN 107227387 A CN107227387 A CN 107227387A
- Authority
- CN
- China
- Prior art keywords
- reduction
- gas
- reactor
- air
- miberal powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0073—Selection or treatment of the reducing gases
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
Abstract
The invention belongs to metallurgical technology field, and in particular to a kind of quick reduction reaction system and method for quick reduction reactor and water-cooled miberal powder.System includes:Quick reduction reactor, heating system and also Primordial Qi system, wherein, the cooling section of the quick reduction reactor includes the air-cooled region and water cooling region that set gradually from top to bottom;The also Primordial Qi system includes exhaust gas processing device and reduction gas storage tank, and the exhaust gas processing device is connected with the reduction offgas outlet and the reduction gas storage tank of reactor respectively, and the reduction gas storage tank is connected through also Primordial Qi air intake valve with the air distribution plate in air-cooled region.As a result, the reduction tail gas after reduction is after cleaning dust cooling, gas compression, carbonization treatment, what is obtained is rich in CO2Reduction tail gas feeding reduction tail gas storage tank, and obtained unreacted reducing gas is then sent into reduction gas storage tank and mix with brand-new also Primordial Qi, hereby it is achieved that being made full use of to top gas, it is to avoid the unreacted reducibility gas of waste.
Description
Technical field
The invention belongs to metallurgical technology field, and in particular to a kind of quick reduction reactor and water-cooled miberal powder are quickly gone back
Former reaction system and method.
Background technology
It is well known that direct reduction processes of Iron ores is the cutting edge technology of development of iron & steel industry, it is that development of iron & steel industry is broken away from
The yoke of coking coal resource, reduction energy consumption, reduction CO2Discharge, the important hair for improving steel products structure, improving steel products quality
Open up direction.DRI is the substitute of high-quality steel scrap, is the source of iron raw material that can not be short for producing high-quality clean steel, is
The high-quality cooling agent of pneumatic steelmaking.
Now, reach commercial production levels or be still broadly divided into two classes in the direct reduction process for continuing to test:Use gas
The direct-reduction process of body reducing agent and the direct-reduction process using solid reductant.Wherein, directly going back using gaseous reducing agent
Former method is divided by process equipment and can be divided into three classes, including shaft furnace process, retort process making sponge iron and fluidized bed process.
Shaft furnace process be it is a kind of refer to furnace charge and coal gas in stove reverse movement, cause the furnace charge that declines progressively by heated by gas and
The method of reduction.The method, using Midrex methods as representative, is most fast, the most widely used direct reduction iron making of current development.
The specific work process of Midrex methods is:Added as the oxide pellet of raw material from furnace roof after shaft furnace, sequentially pass through preheating, go back
Former and cooling three phases, the sponge iron obtained by reduction, the sponge iron discharges out of the furnace after being cooled to 50 DEG C, to prevent reoxidizing;
Wherein, reducing gas is manufactured with a part of coal gas of natural gas and shaft furnace in itself, 760-900 DEG C is first to heat to, in reduction shaft furnace
Pars infrasegmentalis is passed through, then, and stock gas is respectively used to coal gas regeneration, conversion stove heat and shaft furnace cooling after reclaiming.Therefore, this method
Heat and mass efficiency high, product energy consumption per ton can be low up to 2.56 × 106 kilocalories, good product quality, and degree of metalization is up to 92%.Specially
Sharp document CN201110282924.1 discloses a kind of method and device of gas-based reduction shaft furnace production DRI, uses
Coal system also Primordial Qi and coke-stove gas combine supply shaft furnace production DRI.But, there are some defects in the technique:It can only locate
Manage lump material, it is impossible to directly handle powdery iron ore.Agglomeration is needed during processing powdery iron ore, the tedious process and consumption energy consumption
Water, it is less economical.
The HyL methods of Mexico are unique industrialization retort processes making sponge iron, and its specific course of work is as follows:Furnace charge is in retort
In it is fixed, be passed through thermal reduction coal gas and preheated, reduced and cooled down successively, finally periodically stop the supple of gas or steam, outside furnace charge drain tank.
In addition, in order to overcome conventional fixed bed reducing gas to utilize bad shortcoming, HyL methods employ 4 retort serial operations,
Reducing gas is manufactured with natural gas, first conversion insufficient in heat-exchanged reformer, and after the reaction of each retort
All be dehydrated, secondary conversion and temperature raising, coal gas reduced at a high temperature of 1100 DEG C;Moreover, in the case where stopping ventilation, HyL
Method forces discharge using discharge bar.Therefore, this method has advantages below:It is not afraid of charging binding, operation temperature is higher, though between being
Disconnected operation, productivity ratio is not low.But, this method still suffers from following shortcoming:It is poor that coal gas is utilized, and heat consumption is big, and product quality is uneven.
Fluidized bed process is the method that gas reduction Iron Ore Powder is used in fluid bed.In fluidized bed process reduction, specific work
Make process as follows:Air flow press moldingization that the smitham bed of material is through simultaneously is heated, reduces and cooled down successively, obtains going back original product
Briquetting is preserved after cooling;Wherein, coal gas also serves as the fluidizing agent of bulk cargo layer in addition to as reducing agent and heat carrier.Therefore, should
Method has advantages below:Fluidized reduction has the advantages that directly to use miberal powder to save agglomeration, and because ore grain size is small and
Can Accelerating reduction.But, this method still suffers from following shortcoming:Particulate miberal powder is very easily bonded, typically in 600-700 DEG C of not high temperature
Degree is lower to be operated, and not only reduction rate is little, and easily facilitates CO analysis carbon to react;Carbon precipitating is excessive, then hinders normal behaviour
Make.Therefore, a kind of quick reduction reaction system of miberal powder for reducing energy consumption, improving reduction gas utilization rate how is designed, as mesh
The problem of preceding urgent need to resolve.
The content of the invention
For above-mentioned problem present in prior art, the invention provides a kind of quick reduction reactor and water-cooled
The quick reduction reaction system and method for miberal powder, DRI is produced for powder ore;Compared with gas-based shaft kiln, the system can
To handle powdery miberal powder, the processes such as pelletizing, drying, roasting are saved, whole technological process is simpler, simultaneously as powdered ore
Powder footpath is small, big with reducing gas contact area, and the chemical reaction rate between the two is accelerated, and increases feed throughput, in addition, soon
Fast reduction apparatus is using heat accumulation type radiant tube as thermal source, and the efficiency of heating surface is high, while the dustiness in reduction tail gas can be reduced;
Compared with reducing fluid bed, quick reduction reaction system need to only control combustion gas, air mass flow to control the temperature in reactor, grasp
Make simple, while the shut-down that " bonding defluidization " phenomenon is caused can be avoided in fluidized reduction method;Reduction tail gas warp after reduction
Cross after cleaning dust cooling, gas compression, carbonization treatment, what is obtained is rich in CO2Reduction tail gas feeding reduction tail gas storage tank, and
Obtained unreacted reducing gas is then sent into reduction gas storage tank and mixed with brand-new also Primordial Qi, hereby it is achieved that entering to top gas
Row makes full use of, it is to avoid waste unreacted reducibility gas.
In order to solve the above technical problems, the technical solution adopted by the present invention is:
The invention provides a kind of quick reduction reactor, including:Feed zone, reduction section and the cooling set gradually from top to bottom
Heating system is provided with section, the reduction section, makes the heat of miberal powder and reducing gas progress reduction reaction in reactor for producing
Amount;The cooling section includes the air-cooled region and water cooling region set gradually from top to bottom, wherein, the air-cooled sections bottom is set
There is air distribution plate, preliminary cooling treatment is carried out to hot reduzate for introducing reducing gas;The surrounding in the water cooling region is set
There is water-cooling wall, the heat for reduzate in absorbing reaction device burner hearth.
On the other hand, the invention provides a kind of quick reduction reaction system of water-cooled miberal powder, including:Quick reduction is anti-
Answer device, heating system and go back Primordial Qi system, wherein, the quick reduction reactor includes the charging set gradually from top to bottom
The heating system is provided with section, reduction section and cooling section, the reduction section, makes miberal powder and also Primordial Qi in reactor for producing
Body carries out the heat of reduction reaction;The cooling section includes the air-cooled region and water cooling region set gradually from top to bottom, wherein,
The air-cooled sections bottom is provided with air distribution plate, and preliminary cooling treatment is carried out to hot reduzate for introducing reducing gas;Institute
That states water cooling region is surrounded by water-cooling wall, the heat for reduzate in absorbing reaction device burner hearth;The also Primordial Qi system,
Including exhaust gas processing device and reduction gas storage tank, wherein, the reduction offgas outlet of the exhaust gas processing device respectively with reactor
With the reduction gas storage tank connection, the reduction tail gas for being discharged to reactor is handled, and obtains unreacted reducing gas;
The reduction gas storage tank is connected through also Primordial Qi air intake valve with air distribution plate, and the also Primordial Qi system also includes brand-new also Primordial Qi gas
Source, the reduction gas storage tank is provided with brand-new also Primordial Qi entrance connection brand-new also Primordial Qi source of the gas.Reducing gas storage tank is used for unreacted
Reducing gas mixed with new reducing gas, and by mixed reducing gas via reactor air-cooled region carry out heat
Exchange.
Inventor's discovery, a kind of quick reduction reaction system of water-cooled miberal powder of the present invention, compared with gas-based shaft kiln,
The system can handle powdery miberal powder, produce DRI for powder ore, save the processes such as pelletizing, drying, roasting, whole
Individual technological process is simpler, and process is easily-controllable, simultaneously as powdered ore powder footpath is small, it is big with reducing gas contact area, the two
Between chemical reaction rate accelerate, increase feed throughput, in addition, quick reduction apparatus is used as heat using heat accumulation type radiant tube
Source, the efficiency of heating surface is high, while the dustiness in reduction tail gas can be reduced;Compared with reducing fluid bed, quick reduction reaction system
System need to only control combustion gas, air mass flow to control the temperature in reactor, simple to operate, while fluidized reduction method can be avoided
In the shut-down that causes of " bond defluidization " phenomenon, can effectively reduce the energy consumption of the quick reducing process of miberal powder, mitigate at reduction tail gas
Manage the burden of equipment;Reduction tail gas after reduction is after cleaning dust cooling, gas compression, carbonization treatment, and what is obtained is rich in
CO2Reduction tail gas feeding reduction tail gas storage tank, and obtained unreacted reducing gas then send into reduction gas storage tank in brand-new
Also Primordial Qi is mixed, hereby it is achieved that being made full use of to top gas, it is to avoid waste unreacted reducibility gas.
According to a particular embodiment of the invention, the heating system includes multiple heat accumulation type radiant tubes, each heat accumulating type spoke
Pipe is penetrated vertically to be disposed side by side in the reduction section;The side wall of the reduction section is provided with and the heat accumulation type radiant tube
Fuel gas inlet, air intake and the exhanst gas outlet being connected.
According to a particular embodiment of the invention, the reduction gas storage tank also includes newly also Primordial Qi entrance, for new to be gone back
Primordial Qi is passed through in the reduction gas storage tank and mixed with unreacted reducing gas.
According to a particular embodiment of the invention, the also Primordial Qi system also includes blower fan, the air inlet of the blower fan and institute
Also Primordial Qi air intake valve connection is stated, gas outlet be connected with the air distribution plate, for mixing reducing gas to be passed through and described quickly goes back
The air-cooled region of former reactor.
According to a particular embodiment of the invention, the also Primordial Qi system also includes nitrogen air intake valve and nitrogen storage tank, institute
State nitrogen air intake valve one end to be connected with the nitrogen storage tank, the other end is connected with the air inlet of the blower fan, for controlling nitrogen
Gas enters reactor and carries out air displacement, it is ensured that enters whole system before reactor in reducing gas and is in nonoxidizing atmosphere.
According to a particular embodiment of the invention, the exhaust gas processing device includes wash cooling device, compression set and taken off
Carbon device, wherein, the wash cooling device is connected with reduction offgas outlet, and the reduction tail gas for being discharged to reactor is carried out
Washing, cooling treatment;The compression set is connected with the wash cooling device, for the gas that will be discharged to wash cooling device
Body is compressed processing;The decarbonization device is connected with the compression set and the reduction gas storage tank respectively, for that will compress
Gas afterwards carries out carbonization treatment, and obtained unreacted reducing gas is passed into also Primordial Qi in the reduction gas storage tank and new
Body is mixed;The also Primordial Qi system also includes reduction tail gas storage tank, is connected with the decarbonization device, for decarbonization device to be obtained
Be rich in CO2Reduction tail gas stored.
According to a particular embodiment of the invention, in addition to the discharging system, including miberal powder feed system and also originate in
Thing discharge system, wherein, the miberal powder feed system is carried including raw material cabin, bucket, upper push-pull valve, underthrust plate valve, material leakage are bored and is shaken
Dynamic Cloth sieve, wherein, the top carried respectively with raw material cabin and reactor of struggling against is connected, for carrying material;The upper push-pull valve, under
Push-pull valve, material leakage cone and Vibrating Distribution Screen are set in turn in the feed zone from top to bottom, by the upper push-pull valve with
The alternating of push-pull valve is opened and closed, and material envelope is carried out to the reactor;The reduzate discharge system, including drawing mechanism
And storage bin, the drawing mechanism is connected with the discharging opening and the storage bin of the quick reduction reactor respectively, for inciting somebody to action
Reduzate after being cooled down in reactor transports storage bin via drawing mechanism and stored.
Meanwhile, present invention also offers a kind of production method using the quick reduction reaction system of above-mentioned water-cooled miberal powder,
Comprise the following steps:
(1)Produce the preparation before starting:First, air-tight test is carried out to system, it is ensured that the sealing of whole system;So
Afterwards, air displacement is carried out to reactor, opens nitrogen air intake valve, nitrogen carries out nitrogen purging through air distribution plate, it is ensured that whole system
System is in nonoxidizing atmosphere;Finally, the temperature of reduction section is set, realized pair also by adjusting heat that heating system provides
The accurate temperature controlling of former process;
(2)Reduction phase:After temperature of reactor reaches setting value and keeps stable, nitrogen air intake valve is closed, reduction is opened
Gas air intake valve, makes reducing gas enter reactor reduction section, afterwards again by miberal powder via feed system, reactor feed Duan Tian
It is added to reduction section;The reducing gas in gas storage tank is reduced via the air distribution plate in air-cooled region even into cooling section, is then risen
Reduction reaction is carried out to reduction section and miberal powder, hot reduzate and reduction tail gas is obtained;
(3)Product processing:Cooling section is fallen under the hot reduzate, is carried out just via the reducing gas in air-cooled region successively
Walk cooling treatment, the water-cooling wall in water cooling region carries out reducing temperature twice processing, the reduzate after being cooled down, via reactor
Discharging opening enters discharge system;Meanwhile, the reducing gas in the air-cooled region is carried out after pre-add heat treatment by hot reduzate
Rise to reduction section and carry out reduction reaction with miberal powder, realize energy exchange;The reduction tail gas rises to reduction offgas outlet row
Go out reactor, handled via exhaust gas processing device progress and obtain unreacted reducing gas, by itself and one piece new of reducing gas
It is passed through after being mixed in reduction gas storage tank and is passed through reactor participation reduction reaction via air distribution plate again, realizes following for reduction tail gas
Ring is recycled.
According to a particular embodiment of the invention, step(2)The fill process of middle feed system includes:Miberal powder in raw material cabin
Push-pull valve in reactor head, opening is promoted to by bucket, miberal powder under charging aperture via dropping down onto on lower plugboard valve, then, closed
Close push-pull valve, open underthrust plate valve, the powder between two push-pull valves is bored successively via material leakage, drop down onto under Vibrating Distribution Screen
Reduction section, material leakage cone avoids miberal powder from assembling, it is ensured that the smoothness that miberal powder falls;Then, close in underthrust plate valve, opening
Push-pull valve, which makes to be deposited in, to be dropped down onto under the powder on push-pull valve on lower plugboard valve, and charging is so repeated, passes through upper push-pull valve
Used cooperatively with the alternating of underthrust plate valve, it is ensured that powder reactor in dropping process is in sealing state from beginning to end.
According to a particular embodiment of the invention, step(2)In reduction section burner hearth be heated system be heated to 900-
1200℃;Step(3)In generation hot reduzate behind air-cooled region temperature be down to 600-900 DEG C, by water cooling
Temperature is down to normal temperature behind region, meanwhile, the reducing gas in air-cooled region is preheated to 300-600 DEG C, realizes reverse energy and hands over
Change.
Beneficial effects of the present invention are as follows:
(1)The invention provides a kind of quick reduction reactor and the quick reduction reaction system and method for water-cooled miberal powder, pin
DRI is produced to powder ore, easy to operate, process is easily-controllable.
(2)The quick reduction reaction system of water-cooled miberal powder of the present invention, compared with gas-based shaft kiln, the system can be located
Powdery miberal powder is managed, the processes such as pelletizing, drying, roasting are saved, whole technological process is simpler, and process is easily-controllable, simultaneously as powder
Shape miberal powder particle diameter is small, big with reducing gas contact area, and the chemical reaction rate between the two is accelerated, and increases feed throughput, separately
Outside, quick reduction apparatus is using heat accumulation type radiant tube as thermal source, and the efficiency of heating surface is high, while containing in reduction tail gas can be reduced
Dust quantity.
(3)The quick reduction reaction system of a kind of water-cooled miberal powder of the present invention, it is quick to go back compared with reducing fluid bed
Former reaction system need to only control combustion gas, air mass flow to control the temperature in reactor, simple to operate, while fluidization can be avoided
The shut-down that " bonding defluidization " phenomenon is caused in restoring method, can effectively reduce the energy consumption of the quick reducing process of miberal powder, mitigate also
The burden of former tail gas treatment device.
(4)The invention provides a kind of quick reduction reactor and the quick reduction reaction system of water-cooled miberal powder and side
Method, the reduction tail gas after reduction is after cleaning dust cooling, gas compression, carbonization treatment, and what is obtained is rich in CO2Go back protocercal tail
Pneumatic transmission enters to reduce tail gas storage tank, and obtained unreacted reducing gas is then sent into reduction gas storage tank and mixed with brand-new also Primordial Qi,
Hereby it is achieved that being made full use of to top gas, it is to avoid waste unreacted reducibility gas.
Brief description of the drawings
Fig. 1 is process chart of the invention.
Wherein, 1, raw material cabin, 2, bucket carry, 3, upper push-pull valve, 4, underthrust plate valve, 5, material leakage cone, 6, Vibrating Distribution Screen, 7, fast
Fast reduction reactor, 8, heat accumulation type radiant tube, 9, fuel gas inlet, 10, combustion air inlet, 11, exhanst gas outlet, 12, air distribution plate,
13rd, water-cooling wall, 14, discharging spiral, 15, product feed bin, 16, wash cooling device, 17, compression set, 18, decarbonization device, 19,
Reduce tail gas storage tank, 20, reduction gas storage tank, 21, nitrogen storage tank, 22, also Primordial Qi air intake valve, 23, nitrogen air intake valve, 24,
Blower fan, 25, reduction offgas outlet.
Embodiment
Embodiments of the invention are described below in detail.The embodiments described below is exemplary, is only used for explaining this hair
It is bright, and be not considered as limiting the invention.Unreceipted particular technique or condition in embodiment, according to text in the art
Offer described technology or condition or carried out according to product description.Agents useful for same or the unreceipted production firm person of instrument,
For can be by the conventional products of acquisition purchased in market.
In the description of the invention, it is to be understood that term " first ", " second " are only used for describing purpose, and can not
It is interpreted as indicating or implies relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " the
One ", one or more this feature can be expressed or be implicitly included to the feature of " second ".In the description of the invention,
" multiple " are meant that two or more, unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally;Can be that machinery connects
Connect or electrically connect;Can be joined directly together, can also be indirectly connected to by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
According to an aspect of the present invention, the invention provides a kind of quick reduction reactor, including:From top to bottom successively
Heating system is provided with feed zone, reduction section and the cooling section of setting, the reduction section, for produce make in reactor miberal powder and
Reducing gas carries out the heat of reduction reaction;The cooling section includes the air-cooled region and water cooling area set gradually from top to bottom
Domain, wherein, the air-cooled sections bottom is provided with air distribution plate, and hot reduzate is tentatively cooled down for introducing reducing gas
Processing;The water cooling region is surrounded by water-cooling wall, heat for reduzate in absorbing reaction device burner hearth.
According to another aspect of the present invention, the invention provides a kind of quick reduction reaction system of water-cooled miberal powder, bag
Include:Quick reduction reactor 7, heating system and also Primordial Qi system, wherein, the quick reduction reactor include from top to bottom according to
Heating system is provided with feed zone, reduction section and the cooling section of secondary setting, the reduction section, makes miberal powder in reactor for producing
The heat of reduction reaction is carried out with reducing gas;The cooling section includes the air-cooled region and water cooling area set gradually from top to bottom
Domain, wherein, the air-cooled sections bottom is provided with air distribution plate 12, preliminary to the progress of hot reduzate cold for introducing reducing gas
But handle;The water cooling region is surrounded by water-cooling wall, heat for reduzate in absorbing reaction device burner hearth;It is described to go back
Primordial Qi system, including exhaust gas processing device and reduction gas storage tank, wherein, the reduction of the exhaust gas processing device respectively with reactor
Offgas outlet 25 and the reduction gas storage tank 20 are connected, and the reduction tail gas for being discharged to reactor is handled, and obtains not anti-
The reducing gas answered;The reduction gas storage tank is connected through also Primordial Qi air intake valve with air distribution plate 12, and the also Primordial Qi system is also wrapped
Brand-new also Primordial Qi source of the gas is included, the reduction gas storage tank is provided with brand-new also Primordial Qi entrance connection brand-new also Primordial Qi source of the gas.In reactor
The reduction tail gas progress of discharge, which is handled, to be obtained after unreacted reducing gas, and reduction gas storage tank is used for unreacted reducing gas
Mixed with new reducing gas, and mixed reducing gas is subjected to heat exchange via the air-cooled region of reactor.
Inventor's discovery, a kind of quick reduction reaction system of water-cooled miberal powder of the present invention, compared with gas-based shaft kiln,
The system can handle powdery miberal powder, produce DRI for powder ore, save the processes such as pelletizing, drying, roasting, whole
Individual technological process is simpler, and process is easily-controllable, simultaneously as powdered ore powder footpath is small, it is big with reducing gas contact area, the two
Between chemical reaction rate accelerate, increase feed throughput, in addition, quick reduction apparatus is used as heat using heat accumulation type radiant tube
Source, the efficiency of heating surface is high, while the dustiness in reduction tail gas can be reduced;Compared with reducing fluid bed, quick reduction reaction system
System need to only control combustion gas, air mass flow to control the temperature in reactor, simple to operate, while fluidized reduction method can be avoided
In the shut-down that causes of " bond defluidization " phenomenon, can effectively reduce the energy consumption of the quick reducing process of miberal powder, mitigate at reduction tail gas
Manage the burden of equipment;Reduction tail gas after reduction is after cleaning dust cooling, gas compression, carbonization treatment, and what is obtained is rich in
CO2Reduction tail gas feeding reduction tail gas storage tank, and obtained unreacted reducing gas then send into reduction gas storage tank in brand-new
Also Primordial Qi is mixed, hereby it is achieved that being made full use of to top gas, it is to avoid waste unreacted reducibility gas.
The quick reduction reaction system of a kind of water-cooled miberal powder of the present invention, including also Primordial Qi system, for reaction
The reduction tail gas of device discharge obtains unreacted reducing gas after being handled so that the unreacted reducing gas with it is new
Reducing gas mixing reenters reactor and carries out reduction reaction.According to a particular embodiment of the invention, the also Primordial Qi system,
Including exhaust gas processing device and reduction gas storage tank 20, wherein, the exhaust gas processing device goes out with the reduction tail gas of reactor respectively
Mouth 25 and the reduction gas storage tank connection, the reduction tail gas for being discharged to reactor are handled, and obtain unreacted reduction
Gas;The reduction gas storage tank is connected through also Primordial Qi air intake valve 22 with air distribution plate 12, and the also Primordial Qi system also includes brand-new
Also Primordial Qi source of the gas, the reduction gas storage tank is provided with brand-new also Primordial Qi entrance connection brand-new also Primordial Qi source of the gas.When most starting production,
Reducing gas is supplied to reduce miberal powder by brand-new also Primordial Qi source of the gas, the reduction tail gas discharged in reactor is handled not anti-
After the reducing gas answered, reduction gas storage tank is used for the new reduction by unreacted reducing gas and brand-new also Primordial Qi source of the gas supply
Gas mixing, and mixed reducing gas is subjected to heat exchange via the air-cooled region of reactor.
According to a particular embodiment of the invention, the exhaust gas processing device includes wash cooling device 16, compression set 17
With decarbonization device 18, the reduction tail gas for being discharged to reactor is handled, isolated unreacted reducing gas and
Rich in CO2Reduction tail gas.The reduction offgas outlet of the entrance of the wash cooling device and the quick reduction reactor 7 connects
Connect, the reduction tail gas for being discharged to reactor is washed, cooling treatment;The entrance of the compression set and the washing are cold
But the outlet connection of device, for processing will to be compressed to the gas that wash cooling device is discharged;The decarbonization device enters
Mouthful be connected, for the gas progress carbonization treatment after the compression of discharging compression set, separate with the outlet of the compression set
Obtained unreacted reducing gas and rich in CO2Reduction tail gas;The decarbonization device reducing gas outlet with it is described
The recovery reducing gas entrance connection of gas storage tank is reduced, the unreacted reducing gas for decarbonization device to be discharged is passed into institute
State in reduction gas storage tank, mixed in the reduction gas storage tank with new reducing gas.According to a particular embodiment of the invention, institute
Stating also Primordial Qi system also includes reduction tail gas storage tank 19, the reaction gas of the entrance and the decarbonization device of the reduction tail gas storage tank
Body outlet connection, CO is rich in for obtain decarbonization device2Reduction tail gas stored.Hereby it is achieved that pair going back protocercal tail
Gas is separated, and obtains unreacted reducing gas and be discharged into reduction tail gas storage tank to carry out mixing place with new reducing gas
Reason, is laid in as the reducing gas resource of reactor, to ensure to reduce recycling for tail gas, can mitigate whole system
The energy consumption of the burden of middle tail gas treatment device, effectively reduction direct-reduction technique;And isolated is rich in CO2Go back protocercal tail
Gas, is passed into reduction tail gas storage tank and is stored, and reduces waste gas discharge, environmentally friendly.
According to a particular embodiment of the invention, the reduction gas storage tank 20 includes reducing gas outlet and reclaims reducing gas
Entrance, the recovery reducing gas entrance of the reduction gas storage tank is connected with the reducing gas outlet of the decarbonization device, described to go back
The reducing gas outlet of Primordial Qi storage tank is connected with the quick reduction reactor 7, in the reduction tail gas of discharging reactor
Unreacted reducing gas is obtained after handling via the exhaust gas processing device to be stored and collected, and realizes unreacted reduction
Gas, which is again introduced into reactor, carries out reduction reaction, it is ensured that the cycling and reutilization of reduction tail gas;It is preferred that, the also Primordial Qi storage
The reducing gas outlet of tank is connected through also Primordial Qi air intake valve with the air distribution plate 12 of the reactor, for by unreacted reduction
Gas carries out heat exchange via the air-cooled region of reactor.Further, the reduction gas storage tank also enters including newly also Primordial Qi
Mouthful, the new also Primordial Qi entrance of the reduction gas storage tank is connected with reduction device of air, for new also Primordial Qi to be passed through into the reduction
Mixed in gas storage tank with unreacted reducing gas, and mixed reducing gas is subjected to heat via the air-cooled region of reactor
Amount is exchanged.
According to a particular embodiment of the invention, the also Primordial Qi system also includes blower fan 24, nitrogen air intake valve 23 and nitrogen
Gas storage tank 21, for controlling reducing gas and nitrogen to adjust the atmosphere of whole system.Described nitrogen air intake valve one end and institute
The outlet connection of nitrogen storage tank is stated, the other end is connected with the air inlet of the blower fan, for controlling nitrogen to be carried out into reactor
Air is replaced, it is ensured that is entered whole system before reactor in reducing gas and is in nonoxidizing atmosphere.The blower fan, air inlet can
To be connected with also Primordial Qi air intake valve 22 or the nitrogen air intake valve, the gas outlet of the blower fan and the air distribution plate
Connection, for guiding reducing gas or nitrogen to be transported in reactor;Wherein, the air inlet when the blower fan and the reduction
When gas air intake valve 22 is connected, the gas outlet of the blower fan is connected with the air distribution plate, for mixing reducing gas to be passed through into institute
State the air-cooled region of quick reduction reactor;Be connected with the nitrogen air intake valve when the air inlet of the blower fan, the blower fan
Gas outlet be connected with the air distribution plate, for nitrogen is passed through the quick reduction reactor air-cooled region carry out air put
Change, it is ensured that enter whole system before reactor in reducing gas and be in nonoxidizing atmosphere.
The course of work of the also Primordial Qi system is as follows:
1st, nitrogen purge:Need to carry out whole system nitrogen purging before also Primordial Qi enters reactor, it is whole to ensure
Individual system is in nonoxidizing atmosphere.When nitrogen is purged, also Primordial Qi air intake valve is closed, nitrogen air intake valve is opened, then
Blower fan is opened, the nitrogen in nitrogen storage tank is entered in quick reduction reactor.
2nd, reducing gas course of conveying:Nitrogen purging is finished, and closes nitrogen air intake valve, opens also Primordial Qi air intake valve,
Then the reducing gas in blower fan, reduction gas storage tank is opened by air distribution plate even into quick reduction reactor, is gone back
Original reaction.
3rd, vent gas treatment process is reduced:Quick reduction reactor is completed after reduction reaction, discharge reduction tail gas.Participate in reaction
Reduction tail gas afterwards sequentially enters wash cooling device and carries out wash cooling processing, compression set from reduction offgas outlet discharge
It is compressed processing, decarbonization device to carry out after carbonization treatment, obtains unreacted reducing gas and rich in CO2Reduction tail gas;
Wherein, what is obtained is rich in CO2Reduction tail gas enter reduction tail gas storage tank and be collected storage, obtain unreacted is and Primordial Qi
Body enters to be mixed in reduction gas storage tank with new reducing gas, enters reactor via also Primordial Qi air intake valve, blower fan again
It is middle to be reduced.Hereby it is achieved that being recycled to reduction tail gas, bearing for tail gas treatment device in whole system can be mitigated
The energy consumption of load, effectively reduction direct-reduction technique.
The invention provides a kind of quick reduction reaction system of water-cooled miberal powder, including quick reduction reactor 7, for pair
Miberal powder carries out direct-reduction processing, obtains reduction tail gas and reduzate.According to a particular embodiment of the invention, it is described quickly to go back
Former reactor includes feed zone, reduction section and the cooling section set gradually from top to bottom, and miberal powder is added to reactor by feed zone
In, reduction reaction is carried out through reduction section and reducing gas, reduction tail gas and reduzate is obtained, the reduzate is via cooling
Discharged after Duan Jinhang cooling treatments by discharging opening, the reduction tail gas is discharged into the also Primordial Qi system via reduction offgas outlet
Exhaust gas processing device in.According to a particular embodiment of the invention, reduction tail gas is additionally provided with the side wall of reactor head to go out
Mouthful, its discharge line connects the air inlet pipe of wash cooling device.
According to a particular embodiment of the invention, the reduction section, it is direct for miberal powder to be carried out positioned at the middle part of reactor
Reduction, obtains reduzate and reduction tail gas.Heating system is provided with the reduction section, for produce make in reactor miberal powder and
Reducing gas carries out the heat of reduction reaction.Further, the type of the heating system is not particularly limited, as long as can be
Reactor provides stable reaction temperature, can be that the heat accumulating type system that multiple heat accumulation type radiant tubes 8 are constituted is either more
Heating system of individual high-temperature heating circle composition etc..It is preferred that, the reducing gas enters via the bottom of the reduction section, institute
State miberal powder via the top of the reduction section to enter, two kinds of raw materials are impacted by convection current, collided, are conducive to entering between the two
Row fully contact, promotes miberal powder fully to be reduced;Obtained reduzate is constantly fallen due to self gravitation, via reduction section
Bottom discharge to cooling section carry out cooling treatment;Obtained reduction tail gas constantly freely rises, and is arranged via the top of reduction section
Go out, be then discharged into via the reduction offgas outlet positioned at reactor head side wall in wash cooling device.
According to a particular embodiment of the invention, the cooling section, positioned at the bottom of reactor, for also being originated in what is obtained
Thing carries out cooling treatment.The cooling section includes the air-cooled region and water cooling region set gradually from top to bottom, successively to obtaining
Reduzate carry out cooling treatment.The air-cooled sections bottom is provided with air distribution plate 12, is gone back for introducing reducing gas to hot
Originate in thing and carry out preliminary cooling treatment, in order to which the hot reduzate generated and the normal temperature having just enter into reactor will be reacted also
Raw-gas carries out heat exchange processing, the reduzate tentatively cooled down and pre-warmed reducing gas;Wherein, the preliminary cooling
Reduzate constantly fallen due to self gravitation, carry out secondary cooling processing into water cooling region;The pre-warmed reduction
Gas constantly freely rises, and enters reduction section and carries out reduction treatment to miberal powder;Thus, the heat exchange processing in air-cooled region, both real
The preliminary cooling to hot reduzate is showed, has been conducive to the reducing gas after preheating to enter again and is rapidly heated after reduction section and anti-
Should, the heat of reduzate is taken full advantage of, the energy expenditure of production process is reduced, production cost is reduced.The water cooling region
Be surrounded by water-cooling wall, the heat for reduzate in absorbing reaction device burner hearth;Wherein, water-cooling wall 13 is water cooling region
Important component, is distributed in reactor bottom surrounding, the water or steam of flowing is in inside, the heat for absorbing reduzate in burner hearth
Amount, realizes the reducing temperature twice of reduzate.According to a particular embodiment of the invention, the shape of the cooling section is not limited specifically
System, as long as reduzate can be made smoothly to fall.Further, the cooling section is tapered, is conducive to reduzate profit
Constantly fallen with self gravitation and carry out comprehensive cooling treatment.
According to a particular embodiment of the invention, the feed zone, positioned at the top of reactor, for miberal powder to be added to instead
Answer and reduction treatment is carried out in device.The feed zone includes upper push-pull valve 3, underthrust plate valve 4, material leakage cone 5 and shaken successively from top to bottom
Dynamic Cloth sieve 6, is opened and closed by the alternating of the upper push-pull valve and underthrust plate valve, in charging to the reactor head
Charging aperture is closed in turn;Thus, while ensureing that miberal powder falls smooth, also to ensure to react in miberal powder dropping process
The sealing of device.
The course of work of the quick reduction reactor is as follows:
1st, miberal powder is added in reactor via the feed zone of reactor head.First, push-pull valve in opening, miberal powder is via charging
Dropped down onto under mouthful on lower plugboard valve, then, push-pull valve in closings, opening underthrust plate valve makes powder between two push-pull valves successively
Bored via material leakage, reduction section dropped down onto under Vibrating Distribution Screen, material leakage cone avoids miberal powder from assembling, it is ensured that miberal powder whereabouts it is smooth
Property;Then, push-pull valve, which makes to be deposited in, in closing underthrust plate valve, opening drops down onto under the powder on push-pull valve on lower plugboard valve, such as
Charging is repeated in this, is used cooperatively by the alternating of upper push-pull valve and underthrust plate valve, it is ensured that powder is anti-in dropping process
Device is answered to be in sealing state from beginning to end.
2nd, miberal powder in the reactor portion reduction section carry out reduction treatment.Under the heat effect of heating system, reduction section
Internal furnace temperature is higher(It is preferred that, the burner hearth of reduction section is heated system and is heated to 900-1200 DEG C), it is entering for reduction reaction
Row provides advantage.Miberal powder freely falls to cooling section via reduction section, and reducing gas is preheated via cooling section(Also
Raw-gas is preheated to 300-600 DEG C)Reduction section is freely risen to afterwards, and both occur impact by convection, fully
Contact, chemically reacts, and obtains reduzate and reduction tail gas;Obtained reduzate is constantly fallen due to self gravitation,
Via the bottom discharge of reduction section cooling treatment is carried out to cooling section;Obtained reduction tail gas constantly freely rises, via reduction
The top discharge of section, is then discharged into wash cooling device via the reduction offgas outlet positioned at reactor head side wall.Its
In, the reaction mechanism of miberal powder and reducibility gas is:MexOy+CO→Me+CO2, MexOy+H2→Me+H2O.Due to miberal powder particle diameter
Small, heat transfer condition and reacting dynamics condition are substantially improved between gas-solid, and reduction reaction can be completed within the several seconds, are realized directly
The quick production process of reduced iron.
3rd, miberal powder carries out cooling treatment in the cooling section of reactor bottom.The reduzate that reduction section is obtained is hot reduction
Product, first, carries out preliminary cooling processing, i.e., described hot reduzate via air distribution plate with just uniformly entering into air-cooled region
Enter and exchanged heat between the normal temperature reducing gas in reactor so that the temperature of hot reduzate is down to 600-900 DEG C, with this
Meanwhile, reducing gas is preheated to 300-600 DEG C;Then, enter via the reduzate of preliminary cooling processing into water cooling region
Row reducing temperature twice processing, i.e., heat exchange when passing through water-cooling wall via the reduzate of preliminary cooling processing is handled so that be distributed in
The water-cooling wall of reactor bottom surrounding can effectively absorb the heat of reduzate in burner hearth, obtain temperature and be down to going back for normal temperature
Thing is originated in, the reducing temperature twice of reduzate is realized.Obtained normal temperature reduzate is discharged via the discharging opening of reactor.
The invention provides a kind of quick reduction reaction system of water-cooled miberal powder, including heating system, for for reactor
Heat needed for miberal powder progress reduction treatment is provided.The heating system is arranged in the reduction section of the reactor, for producing
It is raw to make miberal powder and the heat of reducing gas progress reduction reaction in reactor.According to a particular embodiment of the invention, the heating
System includes multiple heat accumulation type radiant tubes 8, and each heat accumulation type radiant tube is vertically disposed side by side in the reduction section, had
Uniformly heated beneficial to miberal powder in reduction section and reducing gas, it is to avoid temperature distributing disproportionation present in reaction compartment is even
Problem, meanwhile, also help miberal powder and fallen using free gravity, it is unobstructed, it is ensured that miberal powder falls smooth.The reduction section
Side wall is provided with fuel gas inlet 9, air intake 10 and the exhanst gas outlet 11 being connected with the heat accumulation type radiant tube, the combustion gas
Entrance is used to input combustion gas, and the air intake is combustion air inlet 10, and for inputting combustion air, the exhanst gas outlet is used
In output flue gas so that combustion gas and air, which enter, occurs combustion reaction in heat accumulation type radiant tube, the high-temperature flue gas of generation is to reaction
Device is discharged after being heated;It is preferred that, the heat that combustion gas and air burning are produced mainly is passed heat in the way of radiation
Miberal powder and reducing gas in reactor are passed, the combustion gas in reduction reaction acquisition reduzate, heat accumulation type radiant tube is brought it about
Running system is isolated from one another with reduction flow of air system in reactor, does not interfere with the reduction process in reactor.Further
, the gas flow that can be passed through heat accumulation type radiant tube by regulation can accurately control the temperature field in reactor, thus may be used
To control reactor temperature number and thermograde, the accurate temperature controlling to reduction process in reactor is realized.Thus, institute
Heating system is stated, realizes and miberal powder in reduction section and reducing gas is uniformly heated, it is to avoid be warm present in reaction compartment
The problem of spending skewness, meanwhile, also help miberal powder and fallen using free gravity, it is unobstructed, it is ensured that miberal powder falls suitable
Freely.
The invention provides a kind of quick reduction reaction system of water-cooled miberal powder, in addition to the discharging system, it is used for
Pan feeding and discharging processing are carried out to reactor.According to a particular embodiment of the invention, the discharging system is fed including miberal powder
System and reduzate discharge system, the miberal powder feed system are used for reactor conveying mineral powder, the reduzate discharging
The reduzate that system is used to discharge reactor carries out output processing.The miberal powder feed system include raw material cabin 1, bucket carry 2,
Upper push-pull valve 3, underthrust plate valve 4, material leakage cone 5 and Vibrating Distribution Screen 6.The bucket puies forward top phase respectively with raw material cabin and reactor
Even, for carrying material.The upper push-pull valve, underthrust plate valve, material leakage cone and Vibrating Distribution Screen enter described in being set in turn in from top to bottom
Expect in section, opened and closed by the alternating of the upper push-pull valve and underthrust plate valve, material envelope is carried out to the reactor, moreover,
The powder being deposited on push-pull valve further enhances sealing effectiveness, realizes " material envelope ", meanwhile, the cooperation of two push-pull valves
Use, it is ensured that powder reactor in dropping process is in sealing state from beginning to end.Material leakage bore, be arranged on underthrust plate valve and
Between Vibrating Distribution Screen, Vibrating Distribution Screen is dropped down onto under the miberal powder between two push-pull valves is bored by material leakage under gravity
During, the material leakage cone of arrangement in the reactor avoids the aggtegation of miberal powder, it is ensured that the smoothness that miberal powder falls.Vibration
Sieve, passes through effect of vibration so that reduction section of the miberal powder even into reactor.The reduzate discharge system, including discharging
Device 14 and storage bin 15, the secondary cooling reduzate discharged for transport reactor discharging opening.The drawing mechanism difference
It is connected with the discharging opening and the storage bin of the quick reduction reactor, for the reduzate after being cooled down in reactor to be passed through
Storage bin is transported by drawing mechanism to be stored.Further, the drawing mechanism 14 is discharging spiral 14;The storage bin
15 be product feed bin 15.
According to another aspect of the present invention, present invention also offers one kind, using above-mentioned water-cooled miberal powder, quickly reduction is anti-
The production method of system is answered, is comprised the following steps:
(1)Produce the preparation before starting:First, air-tight test is carried out to system, it is ensured that the sealing of whole system;So
Afterwards, air displacement is carried out to reactor, opens nitrogen air intake valve, nitrogen carries out nitrogen purging through air distribution plate, it is ensured that whole system
System is in nonoxidizing atmosphere;Finally, the temperature of reduction section is set, realized pair also by adjusting heat that heating system provides
The accurate temperature controlling of former process.
According to a particular embodiment of the invention, the miberal powder feed system include raw material cabin, bucket carry, upper push-pull valve, underthrust
Plate valve, material leakage cone and Vibrating Distribution Screen, for reactor conveying mineral powder.The upper push-pull valve, underthrust plate valve, material leakage are bored and shaken
Dynamic Cloth sieve is set in turn in the feed zone from top to bottom, opened by the alternating of the upper push-pull valve and underthrust plate valve and
Close, material envelope is carried out to the reactor, moreover, the powder being deposited on push-pull valve further enhances sealing effectiveness, it is real
Existing " material envelope ", meanwhile, two push-pull valves are used cooperatively, it is ensured that powder reactor in dropping process is in from beginning to end
Sealing state.
According to a particular embodiment of the invention, the also Primordial Qi system also includes blower fan, nitrogen air intake valve and nitrogen storage
Tank, for controlling reducing gas and nitrogen to adjust the atmosphere of whole system.Described nitrogen air intake valve one end and the nitrogen
The outlet connection of storage tank, the other end is connected with the air inlet of the blower fan, is put for controlling nitrogen to enter reactor progress air
Change, it is ensured that enter whole system before reactor in reducing gas and be in nonoxidizing atmosphere.
According to a particular embodiment of the invention, the heating system is arranged in the reduction section of the reactor, for producing
It is raw to make miberal powder and the heat of reducing gas progress reduction reaction in reactor.The heating system is radiated including multiple heat accumulating types
Pipe, each heat accumulation type radiant tube is vertically disposed side by side in the reduction section, is conducive to miberal powder in reduction section and is gone back
Raw-gas is uniformly heated, it is to avoid the problem of temperature distributing disproportionation is even present in reaction compartment, meanwhile, also help miberal powder
Fallen using free gravity, it is unobstructed, it is ensured that miberal powder falls smooth.The side wall of the reduction section is provided with and the heat accumulating type
Fuel gas inlet, air intake and exhanst gas outlet that radiant tube is connected, the fuel gas inlet are used to input combustion gas, and the air enters
Mouth is used for input air, and the exhanst gas outlet is used to export flue gas so that combustion gas and air, which enter in heat accumulation type radiant tube, to be occurred
Combustion reaction, the high-temperature flue gas of generation is discharged after heating to reactor;It is preferred that, what combustion gas and air burning were produced
Heat mainly transfers heat to miberal powder and reducing gas in reactor in the way of radiation, brings it about reduction reaction and is gone back
Thing is originated in, the fuel gas flow system in heat accumulation type radiant tube and reduction flow of air system in reactor are isolated from one another, Bu Huiying
Ring the reduction process in reactor.Further, the gas flow that can be passed through heat accumulation type radiant tube by regulation can be accurate
The temperature field in reactor is controlled, it is possible thereby to control reactor temperature number and thermograde, is realized to reactor
The accurate temperature controlling of interior reduction process.
(2)Reduction phase:After temperature of reactor reaches setting value and keeps stable, nitrogen air intake valve is closed, is opened
Also Primordial Qi air intake valve, makes reducing gas enter reactor reduction section, afterwards again by miberal powder via feed system, reactor feed
Section is added to reduction section;The reducing gas in gas storage tank is reduced via the air distribution plate in air-cooled region even into cooling section, then
Rise to reduction section and carry out reduction reaction with miberal powder, obtain hot reduzate and reduction tail gas.
According to a particular embodiment of the invention, the miberal powder feed system include raw material cabin, bucket carry, upper push-pull valve, underthrust
Plate valve, material leakage cone and Vibrating Distribution Screen.The top carried respectively with raw material cabin and reactor of struggling against is connected, for carrying material.It is described
Upper push-pull valve, underthrust plate valve, material leakage cone and Vibrating Distribution Screen are set in turn in the feed zone from top to bottom, on described
The alternating of push-pull valve and underthrust plate valve is opened and closed, and material envelope is carried out to the reactor, moreover, being deposited on push-pull valve
Powder further enhances sealing effectiveness, realizes " material envelope ", meanwhile, two push-pull valves are used cooperatively, it is ensured that powder exists
Reactor is in sealing state from beginning to end in dropping process.Material leakage is bored, and is arranged between underthrust plate valve and Vibrating Distribution Screen, when
During miberal powder between two push-pull valves drops down onto Vibrating Distribution Screen under being bored under gravity by material leakage, reaction is arranged in
Material leakage cone in device avoids the aggtegation of miberal powder, it is ensured that the smoothness that miberal powder falls.Vibratory sieve, by effect of vibration,
So that reduction section of the miberal powder even into reactor.According to a particular embodiment of the invention, step(2)The charging of middle feed system
Process includes:Miberal powder in raw material cabin is promoted to push-pull valve in reactor head, opening by bucket, and miberal powder is via under charging aperture
Drop down onto on underthrust plate valve, then, push-pull valve in closing opens underthrust plate valve, make powder between two push-pull valves successively via
Reduction section is dropped down onto under material leakage cone, Vibrating Distribution Screen, material leakage cone avoids miberal powder from assembling, it is ensured that the smoothness that miberal powder falls;
Then, push-pull valve, which makes to be deposited in, in closing underthrust plate valve, opening drops down onto under the powder on push-pull valve on lower plugboard valve, so anti-
Fed, used cooperatively by the alternating of upper push-pull valve and underthrust plate valve again, it is ensured that powder reactor in dropping process
Sealing state is in from beginning to end.
Miberal powder is as follows via the specific work process of feed system:Miberal powder in raw material cabin is promoted to reactor by bucket
Top, is added in reactor via the feed zone of reactor head.First, push-pull valve in opening, miberal powder is via under charging aperture
Drop down onto on underthrust plate valve, then, push-pull valve in closing opens underthrust plate valve, make powder between two push-pull valves successively via
Reduction section is dropped down onto under material leakage cone, Vibrating Distribution Screen, material leakage cone avoids miberal powder from assembling, it is ensured that the smoothness that miberal powder falls;
Then, push-pull valve, which makes to be deposited in, in closing underthrust plate valve, opening drops down onto under the powder on push-pull valve on lower plugboard valve, so anti-
Fed, used cooperatively by the alternating of upper push-pull valve and underthrust plate valve again, it is ensured that powder reactor in dropping process
Sealing state is in from beginning to end.
According to a particular embodiment of the invention, the reduction gas storage tank reducing gas outlet is through also Primordial Qi air intake valve and institute
The air distribution plate connection of reactor is stated, it is mixed to go back for unreacted reducing gas and new reducing gas to be mixed
Raw-gas carries out heat exchange via the air-cooled region of reactor.Further, the air inlet of the blower fan and the also Primordial Qi
Air intake valve is connected, when the gas outlet of the blower fan is connected with the air distribution plate, described fast for mixing reducing gas to be passed through
The air-cooled region of fast reduction reactor carries out pre-add heat treatment.
According to a particular embodiment of the invention, the cooling section, positioned at the bottom of reactor, for also being originated in what is obtained
Thing carries out cooling treatment.The cooling section includes the air-cooled region and water cooling region set gradually from top to bottom, successively to obtaining
Reduzate carry out cooling treatment.The air-cooled sections bottom is provided with air distribution plate, for introducing reducing gas to hot reduction
Product carries out preliminary cooling treatment, is reduced in order to react the hot reduzate of generation and the normal temperature having just enter into reactor
Gas carries out heat exchange processing, the reduzate tentatively cooled down and pre-warmed reducing gas;Wherein, it is described tentatively to cool down
Reduzate is constantly fallen due to self gravitation, and secondary cooling processing is carried out into water cooling region;The pre-warmed also Primordial Qi
Body constantly freely rises, and enters reduction section and carries out reduction treatment to miberal powder;Thus, the heat exchange processing in air-cooled region, was both realized
Preliminary cooling to hot reduzate, is conducive to the reducing gas after preheating to enter and is rapidly heated after reduction section and anti-again
Should, the heat of reduzate is taken full advantage of, the energy expenditure of production process is reduced, production cost is reduced.
According to a particular embodiment of the invention, the reduction section, it is direct for miberal powder to be carried out positioned at the middle part of reactor
Reduction, obtains reduzate and reduction tail gas.Heating system is provided with the reduction section, for produce make in reactor miberal powder and
Reducing gas carries out the heat of reduction reaction.It is preferred that, the reducing gas enters via the bottom of the reduction section, the ore deposit
Powder enters via the top of the reduction section, and two kinds of raw materials are impacted by convection current, collided, are conducive to being filled between the two
Tap is touched, and promotes miberal powder fully to be reduced;Obtained reduzate is constantly fallen due to self gravitation, via the bottom of reduction section
Portion is discharged into cooling section and carries out cooling treatment;Obtained reduction tail gas constantly freely rises, and is discharged via the top of reduction section, so
By by being discharged into positioned at the reduction offgas outlet of reactor head side wall in wash cooling device.
Miberal powder is as follows in the specific work process that reduction section carries out reduction treatment:Miberal powder via reactor head feed zone
It is added in reactor, the reduction section in portion carries out reduction treatment in the reactor.Under the heat effect of heating system, reduction section
Internal furnace temperature is higher(It is preferred that, the burner hearth of reduction section is heated system and is heated to 900-1200 DEG C), it is entering for reduction reaction
Row provides advantage.Miberal powder freely falls to reduction section via reduction section, and reducing gas is preheated via cooling section(Also
Raw-gas is preheated to 300-600 DEG C)Reduction section is freely risen to afterwards, and both occur impact by convection, fully
Contact, chemically reacts, and obtains reduzate and reduction tail gas;Obtained reduzate is constantly fallen due to self gravitation,
Via the bottom discharge of reduction section cooling treatment is carried out to cooling section;Obtained reduction tail gas constantly freely rises, via reduction
The top discharge of section, is then discharged into wash cooling device via the reduction offgas outlet positioned at reactor head side wall.Its
In, the reaction mechanism of miberal powder and reducibility gas is:MexOy+CO→Me+CO2, MexOy+H2→Me+H2O.Due to miberal powder particle diameter
Small, heat transfer condition and reacting dynamics condition are substantially improved between gas-solid, and reduction reaction can be completed within the several seconds, are realized directly
The quick production process of reduced iron.Further, step(2)In reduction section burner hearth be heated system be heated to 900-1200
℃。
(3)Product processing:Cooling section is fallen under the hot reduzate, is entered successively via the reducing gas in air-cooled region
The preliminary cooling treatment of row, the water-cooling wall in water cooling region carry out reducing temperature twice processing, the reduzate after being cooled down, via reaction
The discharging opening of device enters discharge system;Meanwhile, the reducing gas in the air-cooled region is carried out at preheating by hot reduzate
Reduction section is risen to after reason and carries out reduction reaction with miberal powder, energy exchange is realized;The reduction tail gas rises to reduction tail gas and gone out
Mouth discharge reactor, handles via exhaust gas processing device progress and obtains unreacted reducing gas, by itself and new reducing gas
One piece be passed through reduction gas storage tank in mix after again via air distribution plate be passed through reactor participate in reduction reaction, realize reduction tail gas
Cycling and reutilization.
According to a particular embodiment of the invention, the cooling section, positioned at the bottom of reactor, for also being originated in what is obtained
Thing carries out cooling treatment.The cooling section includes the air-cooled region and water cooling region set gradually from top to bottom, successively to obtaining
Reduzate carry out cooling treatment.The air-cooled sections bottom is provided with air distribution plate, for introducing reducing gas to hot reduction
Product carries out preliminary cooling treatment, is reduced in order to react the hot reduzate of generation and the normal temperature having just enter into reactor
Gas carries out heat exchange processing, the reduzate tentatively cooled down and pre-warmed reducing gas;Wherein, it is described tentatively to cool down
Reduzate is constantly fallen due to self gravitation, and secondary cooling processing is carried out into water cooling region;The pre-warmed also Primordial Qi
Body constantly freely rises, and enters reduction section and carries out reduction treatment to miberal powder;Thus, the heat exchange processing in air-cooled region, was both realized
Preliminary cooling to hot reduzate, is conducive to the reducing gas after preheating to enter and is rapidly heated after reduction section and anti-again
Should, the heat of reduzate is taken full advantage of, the energy expenditure of production process is reduced, production cost is reduced.The water cooling region
Be surrounded by water-cooling wall, the heat for reduzate in absorbing reaction device burner hearth;Wherein, water-cooling wall is the weight in water cooling region
Part is wanted, reactor bottom surrounding is distributed in, the water or steam of flowing is in inside, the heat for absorbing reduzate in burner hearth
Amount, realizes the reducing temperature twice of reduzate.According to a particular embodiment of the invention, the shape of the cooling section is not limited specifically
System, as long as reduzate can be made smoothly to fall.Further, the cooling section is tapered, is conducive to reduzate profit
Constantly fallen with self gravitation and carry out comprehensive cooling treatment.
According to a particular embodiment of the invention, the miberal powder feed system is used for reactor conveying mineral powder, the reduction
The reduzate that product discharge system is used to discharge reactor carries out output processing.The reduzate discharge system, including
Drawing mechanism and storage bin, the drawing mechanism connect with the discharging opening of the storage bin and the quick reduction reactor respectively
Connect, stored for the reduzate after being cooled down in reactor to be transported into storage bin via drawing mechanism.
Miberal powder is as follows in the specific work process that cooling section carries out cooling treatment:Miberal powder enters in the cooling section of reactor bottom
Row cooling treatment.The reduzate that reduction section is obtained is hot reduzate, first, is carried out into air-cooled region at preliminary cooling
Reason, i.e., described hot reduzate and just changed via air distribution plate even between the normal temperature reducing gas in reactor
Heat so that the temperature of hot reduzate is down to 600-900 DEG C, at the same time, and reducing gas is preheated to 300-600 DEG C;So
Afterwards, enter water cooling region via the reduzate of preliminary cooling processing and carry out reducing temperature twice processing, i.e., handled via preliminary cooling
Reduzate pass through water-cooling wall when heat exchange processing so that being distributed in the water-cooling wall of reactor bottom surrounding can effectively inhale
The heat of reduzate in burner hearth is received, the reduzate that temperature is down to normal temperature is obtained, realizes the reducing temperature twice of reduzate.Obtain
Normal temperature reduzate via reactor discharging opening discharge.
According to a particular embodiment of the invention, the also Primordial Qi system, including exhaust gas processing device and reduction gas storage tank, its
In, the exhaust gas processing device includes wash cooling device, compression set and decarbonization device, for the reduction discharged to reactor
Tail gas is handled, and obtains unreacted reducing gas.The entrance of the wash cooling device and the quick reduction reactor
Reduction offgas outlet connection, the reduction tail gas for being discharged to reactor is washed, cooling treatment;The compression set
Entrance is connected with the outlet of the wash cooling device, for will be compressed processing to the gas that wash cooling device is discharged;
The entrance of the decarbonization device is connected with the outlet of the compression set, is entered for the gas after the compression of discharging compression set
Row carbonization treatment, obtained unreacted reducing gas;Reducing gas outlet and the reduction gas storage tank of the decarbonization device
The connection of recovery reducing gas entrance, the unreacted reducing gas for decarbonization device to be discharged is passed into the also Primordial Qi storage
In tank, mixed in the reduction gas storage tank with new reducing gas.According to a particular embodiment of the invention, the also Primordial Qi system
System also includes reduction tail gas storage tank, and the entrance of the reduction tail gas storage tank is connected with the reaction gas outlet of the decarbonization device,
CO is rich in for obtain decarbonization device2Reduction tail gas stored.Hereby it is achieved that reduction tail gas is separated,
Obtain unreacted reducing gas and be discharged into reducing gas progress mixed processing in reduction tail gas storage tank and new, be used as reactor
Reducing gas resource laid in, recycled with ensureing to reduce tail gas, vent gas treatment in whole system can be mitigated set
The energy consumption of standby burden, effectively reduction direct-reduction technique;And isolated is rich in CO2Reduction tail gas, be passed into also
Stored in protocercal tail gas storage tank, reduce waste gas discharge, it is environmentally friendly.
According to a particular embodiment of the invention, the reduction gas storage tank includes reducing gas outlet and reclaims reducing gas to enter
Mouthful, the recovery reducing gas entrance of the reduction gas storage tank is connected with the reducing gas outlet of the decarbonization device, the reduction
The reducing gas outlet of gas storage tank is connected with the quick reduction reactor, in the reduction tail gas of discharging reactor via
Unreacted reducing gas is obtained after the exhaust gas processing device processing to be stored and collected, and realizes unreacted reducing gas
It is again introduced into reactor and carries out reduction reaction, it is ensured that the cycling and reutilization of reduction tail gas;It is preferred that, the reduction gas storage tank
Reducing gas outlet is connected through also Primordial Qi air intake valve with the air distribution plate of the reactor, for unreacted reducing gas to be passed through
Heat exchange is carried out by the air-cooled region of reactor.Further, the reduction gas storage tank also includes newly also Primordial Qi entrance, described
The new also Primordial Qi entrance of reduction gas storage tank is connected with reduction device of air, for new also Primordial Qi to be passed through in the reduction gas storage tank
Mixed with unreacted reducing gas, and mixed reducing gas is subjected to heat exchange via the air-cooled region of reactor.
The course of work that the reduction tail gas is recycled is as follows:Quick reduction reactor is completed after reduction reaction,
Discharge reduction tail gas.Reacted reduction tail gas is participated in from reduction offgas outlet discharge, the progress of wash cooling device is sequentially entered
Wash cooling processing, compression set are compressed processing, decarbonization device and carried out after carbonization treatment, obtain unreacted reducing gas
With rich in CO2Reduction tail gas;Wherein, what is obtained is rich in CO2Reduction tail gas enter reduction tail gas storage tank be collected storage,
Obtained unreacted reducing gas enters to be mixed in reduction gas storage tank with new reducing gas, again via also Primordial Qi intake valve
Door, blower fan are entered in reactor and reduced.Hereby it is achieved that being recycled to reduction tail gas, whole system can be mitigated
The energy consumption of the burden of tail gas treatment device in system, effectively reduction direct-reduction technique.
Inventor has found that the invention provides a kind of quick reduction reactor and the quick reduction reaction system of water-cooled miberal powder
System and method, compared with gas-based shaft kiln, the system can handle powdery miberal powder, and DRI is produced for powder ore, save
The processes such as pelletizing, drying, roasting are gone, whole technological process is simpler, and process is easily-controllable, simultaneously as powdered ore powder footpath is small,
Big with reducing gas contact area, the chemical reaction rate between the two is accelerated, and increases feed throughput, in addition, quickly also original-pack
Put using heat accumulation type radiant tube as thermal source, the efficiency of heating surface is high, while the dustiness in reduction tail gas can be reduced;Flowed with reduction
Change bed to compare, quick reduction reaction system need to only control combustion gas, air mass flow to control the temperature in reactor, simple to operate,
" bonding defluidization " shut-down that phenomenon is caused can be avoided in fluidized reduction method simultaneously, can effectively be reduced miberal powder and quickly be reduced work
The energy consumption of skill, the burden for mitigating reduction tail gas treatment device;Reduction tail gas after reduction passes through cleaning dust cooling, gas pressure
After contracting, carbonization treatment, wherein, what is obtained is rich in CO2Reduction tail gas feeding reduction tail gas storage tank, obtained unreacted also Primordial Qi
Mixed in body feeding reduction gas storage tank with brand-new also Primordial Qi, hereby it is achieved that being made full use of to top gas, it is to avoid waste not
The reducibility gas of reaction.
Embodiment one
The quick restoring method of the present embodiment Iron Ore Powder, comprises the following steps:
1st, iron ore concentrate is added at the top of the quick reduction apparatus of Iron Ore Powder;
2nd, the iron ore concentrate Iron grade is 65%, and the ratio that mineral powder granular particle diameter is less than 0.074mm is no less than 80%;
3rd, heat accumulation type radiant tube temperature is set to 950 DEG C in the quick reduction apparatus of Iron Ore Powder;
4th, it is rich in CO by what is obtained in reduction tail gas after dedusting, pressurization, decarburization2Reduction tail gas and unreacted also Primordial Qi,
Rich in CO2Reduction tail gas feeding reduction tail gas storage tank, unreacted reducing gas feeding reduction gas storage tank in brand-new also Primordial Qi
Mixed, obtain mixing also Primordial Qi;
5th, CO volume fractions are 80%, H in the mixing also Primordial Qi2Volume fraction is 15%;
6th, the mixing also Primordial Qi is passed through from the quick reduction apparatus bottom of Iron Ore Powder, reverse heat exchange is realized with reduzate;
7th, the also Primordial Qi is heated up in uphill process by the effect that heat accumulation type radiant tube is heated, the Iron Ore Powder with whereabouts
Exchanged heat and occur reduction reaction, reduction offgas outlet discharge of the reduction tail gas through the quick reduction apparatus top of Iron Ore Powder is reacted
Device;
8th, the metallization powder of reaction generation is discharged through the quick reduction apparatus bottom of Iron Ore Powder;
9th, the degree of metalization of the metallization powder iron is 95%.
Embodiment two
The quick restoring method of the present embodiment Iron Ore Powder, comprises the following steps:
1st, iron ore concentrate is added at the top of the quick reduction apparatus of Iron Ore Powder;
2nd, the iron ore concentrate Iron grade is 65%, and the ratio that mineral powder granular particle diameter is less than 1mm is no less than 80%;
3rd, in the quick reduction apparatus of Iron Ore Powder, radiant tube is set to 900 DEG C, bottom 2/3rds in the altitude range of top 1/3rd
Radiant tube temperature is set to 950 DEG C in altitude range;
4th, it is rich in CO by what is obtained in reduction tail gas after dedusting, pressurization, decarburization2Reduction tail gas and unreacted also Primordial Qi,
Rich in CO2Reduction tail gas feeding reduction tail gas storage tank, unreacted reducing gas feeding reduction gas storage tank in brand-new also Primordial Qi
Mixed, obtain mixing also Primordial Qi;
5th, CO volume fractions are 60%, H in the mixing also Primordial Qi2Volume fraction is 30%;
6th, the mixing also Primordial Qi is passed through from the quick reduction apparatus bottom of Iron Ore Powder, reverse heat exchange is realized with reduzate;
7th, the effect that the also Primordial Qi is heated in uphill process by heat accumulation type radiant tube heats up, and is carried out with the Iron Ore Powder of whereabouts
Heat exchange and generation reduction reaction, reduction offgas outlet discharge reaction dress of the reduction tail gas through the quick reduction apparatus top of Iron Ore Powder
Put;
8th, the metallization powder of reaction generation is discharged through the quick reduction apparatus bottom of Iron Ore Powder;
9th, the metallization powder degree of metalization is 95%.
The present invention is described in detail above, used herein principle and embodiment of the embodiment to the application
It is set forth, the explanation of above example is only intended to help and understands the present processes and its core concept;Simultaneously for
Those of ordinary skill in the art, according to the thought of the application, have change in specific embodiments and applications
Place, in summary, this specification content should not be construed as the limitation to the application.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the not be the same as Example or the feature of example and non-be the same as Example or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (10)
1. a kind of quick reduction reactor, it is characterised in that including:The feed zone that sets gradually from top to bottom, reduction section and cold
But heating system is provided with section, the reduction section, miberal powder and reducing gas in reactor is carried out reduction reaction for producing
Heat;
The cooling section includes the air-cooled region and water cooling region set gradually from top to bottom, wherein, the air-cooled sections bottom
Provided with air distribution plate, preliminary cooling treatment is carried out to hot reduzate for introducing reducing gas;The surrounding in the water cooling region
Provided with water-cooling wall, the heat for reduzate in absorbing reaction device burner hearth.
2. a kind of quick reduction reaction system of water-cooled miberal powder, it is characterised in that including:Quick reduction reactor, heating system
With also Primordial Qi system, wherein,
The quick reduction reactor includes feed zone, reduction section and the cooling section set gradually from top to bottom, the reduction section
In be provided with the heating system, for producing the heat for making miberal powder and reducing gas in reactor carry out reduction reaction;
The cooling section includes the air-cooled region and water cooling region set gradually from top to bottom, wherein, the air-cooled sections bottom
Provided with air distribution plate, preliminary cooling treatment is carried out to hot reduzate for introducing reducing gas;The surrounding in the water cooling region
Provided with water-cooling wall, the heat for reduzate in absorbing reaction device burner hearth;
It is described also Primordial Qi system, including exhaust gas processing device and reduction gas storage tank, wherein, the exhaust gas processing device respectively with instead
Reduction offgas outlet and the reduction gas storage tank connection of device are answered, the reduction tail gas for being discharged to reactor is handled, obtained
To unreacted reducing gas;
The reduction gas storage tank is connected through also Primordial Qi air intake valve with air distribution plate;
The also Primordial Qi system also includes brand-new also Primordial Qi source of the gas, and the reduction gas storage tank is new provided with brand-new also Primordial Qi entrance connection
System also Primordial Qi source of the gas.
3. a kind of quick reduction reaction system of water-cooled miberal powder as claimed in claim 2, it is characterised in that the heating system
Including multiple heat accumulation type radiant tubes, each heat accumulation type radiant tube is vertically disposed side by side in the reduction section;It is described to go back
The side wall of former section is provided with fuel gas inlet, air intake and the exhanst gas outlet being connected with the heat accumulation type radiant tube.
4. a kind of quick reduction reaction system of water-cooled miberal powder as claimed in claim 2, it is characterised in that the also Primordial Qi system
System also includes blower fan, and the air inlet of the blower fan is connected with the also Primordial Qi air intake valve, and gas outlet is connected with the air distribution plate,
Air-cooled region for mixing reducing gas to be passed through to the quick reduction reactor.
5. a kind of quick reduction reaction system of water-cooled miberal powder as claimed in claim 2, it is characterised in that the also Primordial Qi system
System also includes nitrogen air intake valve and nitrogen storage tank, and described nitrogen air intake valve one end is connected with the nitrogen storage tank, the other end
It is connected with the air inlet of the blower fan, carries out air displacement for controlling nitrogen to enter reactor, it is ensured that enter in reducing gas
Whole system is in nonoxidizing atmosphere before reactor.
6. a kind of quick reduction reaction system of water-cooled miberal powder as claimed in claim 2, it is characterised in that the vent gas treatment
Device includes wash cooling device, compression set and decarbonization device, wherein, the wash cooling device connects with reduction offgas outlet
Connect, the reduction tail gas for being discharged to reactor is washed, cooling treatment;The compression set and the wash cooling device
Connection, for processing will to be compressed to the gas that wash cooling device is discharged;The decarbonization device is filled with the compression respectively
Put and connected with the reduction gas storage tank, for the gas after compression to be carried out into carbonization treatment, obtained unreacted reducing gas
It is passed into the reduction gas storage tank and is mixed with new reducing gas;The also Primordial Qi system also includes reduction tail gas storage tank, with
The decarbonization device connection, CO is rich in for obtain decarbonization device2Reduction tail gas stored.
7. a kind of quick reduction reaction system of water-cooled miberal powder as claimed in claim 2, it is characterised in that also including it is described enter
Discharge system, including miberal powder feed system and reduzate discharge system, wherein, the miberal powder feed system include raw material cabin,
Bucket carry, upper push-pull valve, underthrust plate valve, material leakage cone and Vibrating Distribution Screen, wherein, it is described bucket carry respectively with raw material cabin and reactor phase
Even, for from raw material cabin to reactor feeding;The upper push-pull valve, underthrust plate valve, material leakage cone and Vibrating Distribution Screen are from top to bottom
It is set in turn in the feed zone, is opened and closed by the alternating of the upper push-pull valve and underthrust plate valve, in charging pair
The reactor head charging aperture is closed in turn;The reduzate discharge system, including drawing mechanism and storage bin, institute
State drawing mechanism to be connected with the discharging opening and the storage bin of the quick reduction reactor respectively, for will cool down in reactor
Reduzate afterwards transports storage bin via drawing mechanism and stored.
8. the production method of the quick reduction reaction system of water-cooled miberal powder any one of a kind of utilization claim 2-7, its
It is characterised by, comprises the following steps:
(1)Produce the preparation before starting:First, air-tight test is carried out to system, it is ensured that the sealing of whole system;So
Afterwards, air displacement is carried out to reactor, opens nitrogen air intake valve, nitrogen carries out nitrogen purging through air distribution plate, it is ensured that whole system
System is in nonoxidizing atmosphere;Finally, the temperature of reduction section is set, realized pair also by adjusting heat that heating system provides
The accurate temperature controlling of former process;
(2)Reduction phase:After temperature of reactor reaches setting value and keeps stable, nitrogen air intake valve is closed, reduction is opened
Gas air intake valve, makes reducing gas enter reactor reduction section, afterwards again by miberal powder via feed system, reactor feed Duan Tian
It is added to reduction section;The reducing gas in gas storage tank is reduced via the air distribution plate in air-cooled region even into cooling section, is then risen
Reduction reaction is carried out to reduction section and miberal powder, hot reduzate and reduction tail gas is obtained;
(3)Product processing:Cooling section is fallen under the hot reduzate, is carried out just via the reducing gas in air-cooled region successively
Walk cooling treatment, the water-cooling wall in water cooling region carries out reducing temperature twice processing, the reduzate after being cooled down, via reactor
Discharging opening enters discharge system;Meanwhile, the reducing gas in the air-cooled region carries out pre-add heat treatment in fact by hot reduzate
Reduction section is risen to after existing energy exchange and carries out reduction reaction with miberal powder;The reduction tail gas rises to reduction offgas outlet discharge
Reactor, is handled via exhaust gas processing device progress and obtains unreacted reducing gas, and it is led to one piece new of reducing gas
Enter to reduce in gas storage tank and be passed through reactor participation reduction reaction via air distribution plate again after mixing, realize the circulation of reduction tail gas
Recycle.
9. the production method of the quick reduction reaction system of miberal powder as claimed in claim 8, it is characterised in that step(2)In enter
The fill process of material system includes:Miberal powder in raw material cabin is promoted to push-pull valve in reactor head, opening, miberal powder by bucket
Via being dropped down onto under charging aperture on lower plugboard valve, then, push-pull valve in closing opens underthrust plate valve, makes between two push-pull valves
Powder is bored via material leakage successively, reduction section is dropped down onto under Vibrating Distribution Screen, and material leakage cone avoids miberal powder from assembling, it is ensured that under miberal powder
The smoothness fallen;Then, push-pull valve makes to be deposited in closing underthrust plate valve, opening drops down onto lower plugboard under the powder on push-pull valve
On valve, charging is so repeated, is used cooperatively by the alternating of upper push-pull valve and underthrust plate valve, it is ensured that powder was falling
Reactor head charging aperture is in sealing state from beginning to end in journey.
10. the production method of the quick reduction reaction system of miberal powder as claimed in claim 8, it is characterised in that step(2)In
The burner hearth of reduction section is heated system and is heated to 900-1200 DEG C;Step(3)In hot reduzate it is warm behind air-cooled region
Degree is down to 600-900 DEG C, and temperature is down to normal temperature behind water cooling region, meanwhile, the reducing gas in air-cooled region is preheated to
300-600 DEG C, realize reverse energy exchange.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710614263.5A CN107227387A (en) | 2017-07-25 | 2017-07-25 | Quick reduction reactor and the quick reduction reaction system and method for water-cooled miberal powder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710614263.5A CN107227387A (en) | 2017-07-25 | 2017-07-25 | Quick reduction reactor and the quick reduction reaction system and method for water-cooled miberal powder |
Publications (1)
Publication Number | Publication Date |
---|---|
CN107227387A true CN107227387A (en) | 2017-10-03 |
Family
ID=59957214
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710614263.5A Pending CN107227387A (en) | 2017-07-25 | 2017-07-25 | Quick reduction reactor and the quick reduction reaction system and method for water-cooled miberal powder |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107227387A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107955884A (en) * | 2017-11-20 | 2018-04-24 | 赤峰富邦铜业有限责任公司 | A kind of new oxygen-enriched side-blowing copper smelting-furnace furnace roof cooling device |
-
2017
- 2017-07-25 CN CN201710614263.5A patent/CN107227387A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107955884A (en) * | 2017-11-20 | 2018-04-24 | 赤峰富邦铜业有限责任公司 | A kind of new oxygen-enriched side-blowing copper smelting-furnace furnace roof cooling device |
CN107955884B (en) * | 2017-11-20 | 2019-08-13 | 赤峰富邦铜业有限责任公司 | A kind of novel oxygen-enriched side-blowing copper smelting-furnace furnace roof cooling device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN104673954B (en) | Direct-reduction ironmaking method and system for iron-containing mineral powder | |
WO2018094886A1 (en) | Direct reduction process of coal-based shaft furnace | |
CN108796217B (en) | Device and method for recycling zinc-containing and iron-containing dust mud | |
CN104152165B (en) | The metallurgical reducing process of coal gas circulation coal wholegrain radial sector pyrolysis coupling and system | |
EP2576845B1 (en) | Process and plant for producing hot metal | |
CN107779536A (en) | One kind direct-reduction iron production method and device | |
KR20150010997A (en) | Method and device for introducing fine particle-shaped material into the fluidised bed of a fluidised bed reduction unit | |
KR100276344B1 (en) | Smelting reduction process | |
CN107227392A (en) | Miberal powder also original system | |
CN107227391A (en) | A kind of miberal powder quickly goes back original system | |
CN207243923U (en) | Quick reduction reactor and the quick reduction reaction system of water-cooled miberal powder | |
CN107227387A (en) | Quick reduction reactor and the quick reduction reaction system and method for water-cooled miberal powder | |
CN207347593U (en) | A kind of quick reduction reaction system of miberal powder | |
CN109680114A (en) | A kind of system and method for coal gasification collaboration reduction of iron ore | |
CN107227386A (en) | A kind of miberal powder that can carry hydrogen quickly reduces system and method | |
CN107190117A (en) | A kind of quick reduction reaction system of miberal powder | |
US3585023A (en) | Method and apparatus for reduction of iron ore | |
CN107475475A (en) | Handle the system and method containing Iron Ore Powder | |
CN207243925U (en) | A kind of miberal powder that can carry hydrogen quickly goes back original system | |
CN206607286U (en) | The system that V-Ti-magnetite is reduced directly magnetic separation | |
CN207031479U (en) | Miberal powder direct reduction unit | |
CN107227384A (en) | Miberal powder reduction reaction system | |
CN113278790A (en) | Iron-containing material pretreatment and composite injection method and system | |
CN207031480U (en) | Miberal powder also original system | |
CN207738771U (en) | A kind of equipment of direct-reduction |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination |