CN110240945A - A kind of waste heat recycling gasification furnace - Google Patents
A kind of waste heat recycling gasification furnace Download PDFInfo
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- CN110240945A CN110240945A CN201910651173.2A CN201910651173A CN110240945A CN 110240945 A CN110240945 A CN 110240945A CN 201910651173 A CN201910651173 A CN 201910651173A CN 110240945 A CN110240945 A CN 110240945A
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- water
- cooling wall
- gasification furnace
- waste heat
- annular header
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- 239000002918 waste heat Substances 0.000 title claims abstract description 113
- 238000002309 gasification Methods 0.000 title claims abstract description 83
- 238000004064 recycling Methods 0.000 title claims abstract description 24
- 238000001816 cooling Methods 0.000 claims abstract description 124
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000002893 slag Substances 0.000 claims abstract description 28
- 239000007789 gas Substances 0.000 claims description 36
- 238000011084 recovery Methods 0.000 claims description 32
- 239000006200 vaporizer Substances 0.000 claims description 16
- 229920006395 saturated elastomer Polymers 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 12
- 239000003034 coal gas Substances 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 239000003245 coal Substances 0.000 abstract description 4
- 239000000428 dust Substances 0.000 abstract description 3
- 238000013517 stratification Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000002459 sustained effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/485—Entrained flow gasifiers
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/86—Other features combined with waste-heat boilers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The embodiment of the invention discloses a kind of waste heats to recycle gasification furnace, it is related to coal gasification apparatus field, including gasification furnace shell and water screen system, the inside of gasification furnace shell has the first cavity, burner mouth is provided at the top of gasification furnace shell, the bottom of gasification furnace shell is provided with pulp water outlet, and water screen system is set in the first cavity, and the lower part of the first cavity is as the slag bath for accommodating Heisui River and lime-ash；Waste heat recycling gasification furnace further includes waste-heat recoverer, and water screen system includes water-cooling wall input general pipeline, first annular header, the first water-cooling wall, the second annular header, the second water-cooling wall, more header connecting tubes, third annular header, third water-cooling wall, the 4th water-cooling wall, fourth annular header, the 5th water-cooling wall, the 5th annular header and water-cooling wall delivery trunk.The case where waste heat boiler of the gasification furnace of the embodiment of the present invention is not easy slagging dust stratification, has the advantages that equipment investment is low low with structural construction cost, is suitable for 100 ton/days of feed throughput or so.
Description
Technical field
The present embodiments relate to coal gasification apparatus fields, and in particular to a kind of waste heat recycling gasification furnace.
Background technique
Air-flow bed coal-gasification technology is the leading technology and key technology of Modern Coal-based Chemical industry, according to synthesis air cooling side
Formula is divided into water chilling process and pot destroying process.The air-flow bed coal-gasification technology of pot destroying process recycles high―temperature nuclei using waste heat boiler
The sensible heat of gas has the advantages that energy utilization efficiency is high.But due to increasing waste heat boiler, make gasifying furnace device volume and
Manufacturing cost increases.The waste heat boiler of traditional pot destroying process gasification furnace is located at the lower part of vaporizer, coal gas of high temperature and melting ash
Slag is directly entered waste heat boiler, and slagging dust stratification risk is big, and since the arrangement of waste heat boiler increases the height of gasifying furnace device
Add very much, substantially increases the civil engineering costs and gasification furnace installation difficulty of gasification frame.
Summary of the invention
For this purpose, the embodiment of the present invention provides a kind of waste heat recycling gasification furnace, there is height to solve existing equipment for gasification
Problem excessively high, cost of investment is high and safety is poor.
To achieve the goals above, the embodiment of the present invention provides a kind of waste heat recycling gasification furnace, the waste heat recycling gasification
Furnace includes gasification furnace shell and water screen system, and the inside of the gasification furnace shell has the first cavity, the gasification furnace shell
Top be provided with burner mouth, the bottom of the gasification furnace shell is provided with pulp water outlet, and the water screen system is set to institute
It states in the first cavity, the lower part of first cavity is as the slag bath for accommodating Heisui River and lime-ash；The waste heat recycling gasification furnace is also
Including waste-heat recoverer, the water screen system includes water-cooling wall input general pipeline, first annular header, the first water-cooling wall, second
Annular header, the second water-cooling wall, more header connecting tubes, third annular header, third water-cooling wall, the 4th water-cooling wall, Fourth Ring
Shape header, the 5th water-cooling wall, the 5th annular header and water-cooling wall delivery trunk, the first annular header, the first water-cooling wall,
Second ring header, the second water-cooling wall, fourth annular header, the 5th water-cooling wall set gradually and are connected to from bottom to up, the water cooling
One end of wall input general pipeline is connected to the first annular header, and the water-cooling wall inputs the other end of general pipeline and is set to gasification
On furnace shell water-cooling wall cold water input port connection, the 5th annular header be set to the periphery of the 5th water-cooling wall and with
The top of 5th water-cooling wall is connected to, and the 5th annular header is by the water-cooling wall delivery trunk and is set to gasification furnace shell
On the connection of water-cooling wall steam outlet, second water-cooling wall surrounds the second cavity, sets on the side wall of second water-cooling wall
Multiple first gas exits are equipped with, first gas exit is connected to the second gas exit being set on gasification furnace shell；
The third annular header, third water-cooling wall, the 4th water-cooling wall are set in turn in from bottom to up in second cavity, and successively
Connection；The third annular header is connected to by the more header connecting tubes with second annular header, the 4th water
The upper end of cold wall is connected to the fourth annular header；The third water-cooling wall, the 4th water-cooling wall and the 5th water-cooling wall surround
The vaporizer of burning and gasification reaction is carried out for raw material, the 5th water-cooling wall surrounds the feed inlet of the vaporizer, described
Third water-cooling wall surrounds the slag-drip opening of the vaporizer, and first water-cooling wall and the header connecting tube surround and the deslagging
The gas-slag separation room of mouthful connection, second water-cooling wall and the 4th water-cooling wall surround respectively with gas-slag separation room, the first coal
The waste heat recovery room of gas outlet；The waste-heat recoverer is set in the waste heat recovery room, and the waste-heat recoverer is used
In the heat of coal gas of high temperature release in absorption waste heat recovery room and generate saturated vapor or superheated steam.
Further, the waste-heat recoverer includes waste heat recycling input general pipeline, the 6th annular header, waste heat recoverer
Part, the 7th annular header and waste heat recycle delivery trunk, and the waste heat recycling inputs one end of general pipeline and is set to gasification furnace shell
Waste-heat recoverer input port connection on body, the other end of waste heat recycling input general pipeline by the 6th annular header with
The input port of the waste heat recovery part is connected to, and the waste heat recycles one end of delivery trunk and is set on gasification furnace shell
The connection of waste-heat recoverer delivery outlet, the other end of waste heat recycling delivery trunk by the 7th annular header with it is described remaining
The delivery outlet of heat recovery component is connected to.
Further, the waste heat recovery part is tube panel or coil pipe.
Further, the heat-absorbing medium inside the waste-heat recoverer is the mixture of saturated water and saturated vapor, or overheat
Steam.
Further, the guarantor for injecting safe gas into first cavity is additionally provided on the gasification furnace shell
Protect gas entrance.
Further, the lower end of first water-cooling wall and the first annular header are in the slag bath.
Further, the more header connecting tubes are uniformly and arranged for interval is in the periphery of the third annular header, phase
The distance between adjacent two described header connecting tubes are greater than 300mm.
Further, there are four first gas exits for setting on the side wall of second water-cooling wall.
The embodiment of the present invention has the advantages that
1, the waste heat recycling gasification furnace of the embodiment of the present invention makes two by the way that waste heat recovery room to be set to the outside of vaporizer
Person is in sustained height, reduces the whole height of gasification furnace, reduces the manufacturing expense and gasification frame structural construction cost of gasification furnace
With the case where particularly suitable for 100 ton/days of feed throughput or so.
2, the embodiment of the present invention waste heat recycling gasification furnace gas-slag separation room between vaporizer and waste heat recovery room,
Play the role of high-temperature ash to separate with coal gas of high temperature, reduces the risk of waste heat recovery room slagging dust stratification；Water screen system
4th water-cooling wall is both a part of vaporizer and a part of waste heat recovery room, improves heating surface arrangement efficiency, saves
Material, reduces production cost.
3, the waste-heat recoverer of the waste heat recycling gasification furnace of the embodiment of the present invention both can produce saturated vapor, can also produce
Raw superheated steam, steam quality are high.
Detailed description of the invention
It, below will be to embodiment party in order to illustrate more clearly of embodiments of the present invention or technical solution in the prior art
Formula or attached drawing needed to be used in the description of the prior art are briefly described.It should be evident that the accompanying drawings in the following description is only
It is merely exemplary, it for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer, which is extended, obtains other implementation attached drawings.
Structure depicted in this specification, ratio, size etc., only to cooperate the revealed content of specification, for
Those skilled in the art understands and reads, and is not intended to limit the invention enforceable qualifications, therefore does not have technical
Essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing the function of the invention that can be generated
Under effect and the purpose that can reach, should all still it fall in the range of disclosed technology contents obtain and can cover.
Fig. 1 is the side elevational cross-section structural schematic diagram that waste heat provided in an embodiment of the present invention recycles gasification furnace；
Fig. 2 is the side elevational cross-section structural schematic diagram of water screen system provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of waste-heat recoverer provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of the section structure in Fig. 1 at A-A；
Fig. 5 is the schematic diagram of the section structure in Fig. 1 at B-B；
Fig. 6 be another embodiment of the present invention provides waste heat recycle gasification furnace structural schematic diagram.
Description of symbols: 1, gasify furnace shell；2, gasification burner tip；3, water screen system；4, waste-heat recoverer；5, slag
Pond；11, burner mouth；12, water-cooling wall cold water input port；13, water-cooling wall steam outlet；14, waste-heat recoverer input port；15,
Waste-heat recoverer delivery outlet；16, Quench water inlet；17, pulp water exports；18, the second gas exit；19, gas entrance is protected；21,
Feed(raw material)inlet；22, oxidant inlet；301, water-cooling wall inputs general pipeline；302, first annular header；303, the first water-cooling wall；
304, the second annular header；305, the second water-cooling wall；306, header connecting tube；307, third annular header；308, third water cooling
Wall；309, the 4th water-cooling wall；310, fourth annular header；311, the 5th water-cooling wall；312, the 5th annular header；313, water-cooling wall
Delivery trunk；314, the first gas exit；41, waste heat recycling input general pipeline；42, the 6th annular header；44, waste heat recoverer
Part；46, the 7th annular header；47, waste heat recycles delivery trunk.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily, it is clear that described embodiment is the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
As shown in Figure 1, waste heat recycling gasification furnace includes gasification furnace shell 1, water screen system 3 and waste-heat recoverer 4, gas
The inside for changing furnace shell 1 has the first cavity, and the lower part of the first cavity is as the slag bath 5 for accommodating Heisui River and lime-ash, and gasify furnace shell
The top of body 1 is provided with burner mouth 11, and the bottom of gasification furnace shell 1 is provided with pulp water outlet 17, and pulp water outlet 17 is for being discharged
Lime-ash and Heisui River, in addition, the lower part of gasification furnace shell 1 is provided with water-cooling wall cold water input port 12 and for injecting into slag bath 5
The top of the Quench water inlet 16 of cold water, gasification furnace shell 1 is provided with 13, four the second gas exits of water-cooling wall steam outlet
18, waste-heat recoverer input port 14 and waste-heat recoverer delivery outlet 15, burner mouth 11 is for installing gasification burner tip 2, gasification burner tip 2
With feed(raw material)inlet 21 and oxidant inlet 22.Further, in order to improve the safety of gasification furnace, gasification furnace shell 1 it is upper
Portion is additionally provided with the protection gas entrance 19 for injecting safe gas into the first cavity.
As shown in Fig. 2,4,5, water screen system 3 is set in the first cavity, and water screen system 3 includes that water-cooling wall input is total
Pipe 301, first annular header 302, the first water-cooling wall 303, the second annular header 304, the second water-cooling wall 305, more headers connect
Adapter tube 306, third annular header 307, third water-cooling wall 308, the 4th water-cooling wall 309, fourth annular header 310, the 5th water cooling
Wall 311, the 5th annular header 312 and water-cooling wall delivery trunk 313, first annular header 302, the first water-cooling wall 303, the second ring
Shape header 304, the second water-cooling wall 305, fourth annular header 310, the 5th water-cooling wall 311 set gradually and are connected to from bottom to up,
The lower end of first water-cooling wall 303 and first annular header 302 are in slag bath 5, and water-cooling wall inputs one end of general pipeline 301 and the
The connection of one annular header 302, the other end of water-cooling wall input general pipeline 301 and the water-cooling wall cold water being set on gasification furnace shell 1
Input port 12 is connected to, and the 5th annular header 312 is set to the periphery of the 5th water-cooling wall 311 and the top with the 5th water-cooling wall 311
Connection, the 5th annular header 312 by water-cooling wall delivery trunk 313 be set to gasify furnace shell 1 on water-cooling wall steam it is defeated
13 connection of outlet, the second water-cooling wall 305 surround the second cavity, and there are four the first coal gas for setting on the side wall of the second water-cooling wall 305
Outlet 314, the position of the first gas exit 314 is corresponding with the position of the second gas exit 18, each first gas exit 314 and
Its corresponding second gas exit 18 is connected to；Third annular header 307, third water-cooling wall 308, the 4th water-cooling wall 309 from down toward
On be set in turn in the second cavity, and be sequentially connected；Third annular header 307 passes through more header connecting tubes 306 and second
Annular header 304 is connected to, and more header connecting tubes 306 are uniformly and arranged for interval is in the periphery of third annular header 307, and adjacent two
The distance between root header connecting tube 306 is greater than 300mm, and the upper end of the 4th water-cooling wall 309 is connected to fourth annular header 310；
Third water-cooling wall 308, the 4th water-cooling wall 309 and the 5th water-cooling wall 311, which surround, carries out burning and gasification reaction for raw material
Vaporizer, the 5th water-cooling wall 311 surround the feed inlet of vaporizer, and third water-cooling wall 308 surrounds the slag-drip opening of vaporizer, the first water
Cold wall 303 surrounds the gas-slag separation room being connected to slag-drip opening, the second water-cooling wall 305 and the 4th water-cooling wall with header connecting tube 306
309 surround the waste heat recovery room being connected to respectively with gas-slag separation room, the first gas exit 314, by the way that waste heat recovery room to be arranged
In the outside of vaporizer, makes the two in sustained height, reduce the whole height of gasification furnace, reduce the manufacturing expenses of gasification furnace
With with gasification frame civil engineering costs, the case where particularly suitable for 100 ton/days of feed throughput or so.Gas-slag separation room is located at gas
Change between room and waste heat recovery room, play the role of high-temperature ash and separated with coal gas of high temperature, reduces waste heat recovery room slagging product
The risk of ash；4th water-cooling wall 309 of water screen system 3 is both a part of vaporizer and a part of waste heat recovery room,
Heating surface arrangement efficiency is improved, material is saved, reduces production cost.
As shown in figure 3, waste-heat recoverer 4 is set in waste heat recovery room, waste-heat recoverer 4 is for absorbing waste heat recovery room
The heat of interior coal gas of high temperature release simultaneously generates saturated vapor or superheated steam.Waste-heat recoverer 4 includes that waste heat recycling input is total
Pipe 41, the 6th annular header 42, waste heat recovery part 44, the 7th annular header 46 and waste heat recycle delivery trunk 47, and waste heat returns
The one end for receiving input general pipeline 41 is connected to the waste-heat recoverer input port 14 being set on gasification furnace shell 1, waste heat recycling input
The other end of general pipeline 41 is connected to by the 6th annular header 42 with the input port of waste heat recovery part 44, and waste heat recycles delivery trunk
47 one end is connected to the waste-heat recoverer delivery outlet 15 being set on gasification furnace shell 1, and waste heat recycles the another of delivery trunk 47
One end is connected to by the 7th annular header 46 with the delivery outlet of waste heat recovery part 44.Waste heat recovery part 44 is in the present embodiment
Tube panel, tube panel have multiple, and multiple tube panels are along the radially equidistant periphery for being set to the second water-cooling wall 305 of the second water-cooling wall 305.It is remaining
Heat-absorbing medium inside heat regenerator 4 is the mixture of saturated water and saturated vapor, is also possible to superheated steam.By utilizing waste heat
Recover 4 both can produce saturated vapor, also can produce superheated steam, and steam quality is high.
Working principle: raw material and oxidant enter gasification burner tip 2, enter in vaporizer after mixing in gasification burner tip 2 and send out
Raw burning and gasification reaction, generate raw gas and high-temperature fusion lime-ash.High-temperature fusion lime-ash deposits under the action of air-flow
On five water-cooling walls 311 and the 4th water-cooling wall 309, the slag blanket of solid-state and liquid is formed, is played a protective role to water-cooling wall.Liquid slag
Layer flows downward along water-cooling wall and raw gas passes through slag-drip opening together and enters gas-slag separation room.Liquid slag is along third water cooling
Wall 308 falls directly into downwards slag bath 5.The raw gas of entrainment lime-ash separates in gas-slag separation room, and lime-ash is in gravitational settling
With slag bath 5 is also fallen under the action of inertia force.Raw gas is tentatively cooled down in gas-slag separation room, and temperature is reduced to grey melting
Temperature is hereinafter, flow into waste heat recovery room by the gap between header connecting tube 306 later.The fine ash that temperature reduces after solidifying is touched
It hits and adheres in header connecting tube 306, fall under gravity into slag bath 5 after being agglomerated into bulky grain.By above-mentioned three step
Gas-slag separation, the raw gas dustiness into waste heat recovery room is small, in waste heat recovery room water-cooling wall and tube panel heating surface it is complete
After heat exchange, coal gas passes sequentially through the first gas exit 314 and the second gas exit 18 discharge gasification furnace.3 He of water screen system
The heat absorption of waste-heat recoverer 4 generates saturated vapor or superheated steam, and outflow gasification furnace can be with external application.
In another embodiment of the invention, as shown in fig. 6, the present embodiment is based on above-described embodiment, with above-mentioned reality
Apply example the difference is that, waste heat recovery part 44 is coil pipe in the present embodiment, and coil pipe has a multilayer, and multilayer coil pipe is horizontal and
The even periphery around the second water-cooling wall 305.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.
Claims (8)
1. a kind of waste heat recycles gasification furnace, the waste heat recycling gasification furnace includes gasification furnace shell and water screen system, the gas
The inside for changing furnace shell has the first cavity, and burner mouth is provided at the top of the gasification furnace shell, the gasification furnace shell
Bottom is provided with pulp water outlet, and the water screen system is set in first cavity, the lower part conduct of first cavity
Accommodate the slag bath in Heisui River and lime-ash；It is characterized in that, the waste heat recycling gasification furnace further includes waste-heat recoverer, the water-cooling wall
System includes water-cooling wall input general pipeline, first annular header, the first water-cooling wall, the second annular header, the second water-cooling wall, more collection
Case connecting tube, third annular header, third water-cooling wall, the 4th water-cooling wall, fourth annular header, the 5th water-cooling wall, the 5th annular
Header and water-cooling wall delivery trunk, the first annular header, the first water-cooling wall, the second annular header, the second water-cooling wall, the 4th
Annular header, the 5th water-cooling wall set gradually and are connected to from bottom to up, one end and described first of the water-cooling wall input general pipeline
Annular header connection, the other end of the water-cooling wall input general pipeline and the water-cooling wall cold water input port being set on gasification furnace shell
Connection, the 5th annular header is set to the periphery of the 5th water-cooling wall and is connected to the top of the 5th water-cooling wall, described
5th annular header is connected to by the water-cooling wall delivery trunk with the water-cooling wall steam outlet being set on gasification furnace shell,
Second water-cooling wall surrounds the second cavity, and multiple first gas exits are provided on the side wall of second water-cooling wall, described
First gas exit is connected to the second gas exit being set on gasification furnace shell；The third annular header, third water cooling
Wall, the 4th water-cooling wall are set in turn in second cavity from bottom to up, and are sequentially connected；The third annular header passes through
The more header connecting tubes are connected to second annular header, the upper end of the 4th water-cooling wall and the fourth annular collection
Case connection；The third water-cooling wall, the 4th water-cooling wall and the 5th water-cooling wall, which surround, carries out burning and gasification reaction for raw material
Vaporizer, the 5th water-cooling wall surrounds the feed inlet of the vaporizer, and the third water-cooling wall surrounds the vaporizer
Slag-drip opening, first water-cooling wall and the header connecting tube surround the gas-slag separation room being connected to the slag-drip opening, and described
Two water-cooling walls surround the waste heat recovery room being connected to respectively with gas-slag separation room, the first gas exit with the 4th water-cooling wall；Institute
It states waste-heat recoverer to be set in the waste heat recovery room, the waste-heat recoverer is for absorbing coal gas of high temperature in waste heat recovery room
The heat of release simultaneously generates saturated vapor or superheated steam.
2. waste heat according to claim 1 recycles gasification furnace, which is characterized in that the waste-heat recoverer includes waste heat recycling
It inputs general pipeline, the 6th annular header, waste heat recovery part, the 7th annular header and waste heat and recycles delivery trunk, the waste heat returns
The one end for receiving input general pipeline is connected to the waste-heat recoverer input port being set on gasification furnace shell, and the waste heat recycling input is total
The other end of pipe is connected to by the 6th annular header with the input port of the waste heat recovery part, the waste heat recycling output
One end of general pipeline is connected to the waste-heat recoverer delivery outlet being set on gasification furnace shell, and the waste heat recycles the another of delivery trunk
One end is connected to by the 7th annular header with the delivery outlet of the waste heat recovery part.
3. waste heat according to claim 2 recycles gasification furnace, which is characterized in that the waste heat recovery part is tube panel or disk
Pipe.
4. waste heat according to claim 2 or 3 recycles gasification furnace, which is characterized in that the suction inside the waste-heat recoverer
Thermal medium is the mixture or superheated steam of saturated water and saturated vapor.
5. waste heat according to claim 1,2 or 3 recycles gasification furnace, which is characterized in that also set on the gasification furnace shell
It is equipped with the protection gas entrance for injecting safe gas into first cavity.
6. waste heat according to claim 1 or 2 recycles gasification furnace, which is characterized in that the lower end of first water-cooling wall with
The first annular header is in the slag bath.
7. waste heat according to claim 6 recycles gasification furnace, which is characterized in that the more header connecting tubes uniformly and
Every the periphery for being arranged in the third annular header, the distance between adjacent two header connecting tubes are greater than 300mm.
8. waste heat according to claim 7 recycles gasification furnace, which is characterized in that be arranged on the side wall of second water-cooling wall
There are four first gas exits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910651173.2A CN110240945A (en) | 2019-07-18 | 2019-07-18 | A kind of waste heat recycling gasification furnace |
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