CN105148718B - Double-turbulence ultraclean desulfurization and dust removal compound tower - Google Patents
Double-turbulence ultraclean desulfurization and dust removal compound tower Download PDFInfo
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- CN105148718B CN105148718B CN201510658837.XA CN201510658837A CN105148718B CN 105148718 B CN105148718 B CN 105148718B CN 201510658837 A CN201510658837 A CN 201510658837A CN 105148718 B CN105148718 B CN 105148718B
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 73
- 230000023556 desulfurization Effects 0.000 title claims abstract description 62
- 150000001875 compounds Chemical class 0.000 title claims abstract description 12
- 239000000428 dust Substances 0.000 title abstract description 13
- 239000003546 flue gas Substances 0.000 claims abstract description 60
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000007789 gas Substances 0.000 claims abstract description 45
- 239000007788 liquid Substances 0.000 claims abstract description 41
- 239000007921 spray Substances 0.000 claims abstract description 38
- 239000002002 slurry Substances 0.000 claims abstract description 18
- 239000000839 emulsion Substances 0.000 claims description 24
- 238000013459 approach Methods 0.000 claims description 21
- 238000002347 injection Methods 0.000 claims description 19
- 239000007924 injection Substances 0.000 claims description 19
- 239000012530 fluid Substances 0.000 claims description 9
- 238000005273 aeration Methods 0.000 claims description 8
- 239000002893 slag Substances 0.000 claims description 8
- 238000000605 extraction Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
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- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 abstract description 5
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- 238000010586 diagram Methods 0.000 description 5
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- 230000001869 rapid Effects 0.000 description 4
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- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000003517 fume Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
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- 229910000831 Steel Inorganic materials 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
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- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to a double-turbulence ultraclean desulfurization and dust removal compound tower and belongs to the technical field of gas purification. The compound tower comprises an auxiliary spray tower and a main spray tower, wherein a flue gas inlet, a flue gas outlet and a slurry discharge port are arranged on the lower side wall and at the top of the auxiliary tower and at the bottom of the conical tower respectively, a jet device is mounted in a flue of the flue gas inlet, a turbo-charging composite desulfurization and dust-removal device consisting of a plurality of cyclones are arranged in the tower body above the flue of the flue gas inlet, multiple layers of spray pipes are arranged above the turbo-charging composite desulfurization and dust-removal device, and a plurality of nozzles are mounted on the spray pipes; a flue gas inlet, a flue gas outlet and a slurry discharge port are arranged on the tower body of the main tower, and a slurry discharge pump, a liquid storage area with a disturbance device, a jet device, a plurality of turbulence cyclone devices, multiple rows of spray devices and multiple layers of demisters are arranged on the main tower from bottom to top. The composite tower can improve the desulfurization and dust removal effects to the largest extent under the condition that the minimum resistance, the shortest time, the smallest space and the lowest liquid-gas ratio are realized.
Description
Technical field
The invention belongs to gas purification technique field, more particularly to large, medium and small power plant, chemical plant, the boiler of smelting industry
Flue gas desulfurization and dedusting device structure is designed.
Background technology
The main equipment of wet desulfurization system is absorption tower, employs various ways in various technological processes both at home and abroad
Tower, from the water-bath tower of early stage to spray column, grid tower and recently multiplex spray tower, its purpose is provided to improve in tower
SO2With the mass transfer absorption process of liquid.Wherein eddy flow tower is higher than the technology content of void tower desulfurization and dedusting.Cyclone desulfuration gas wash tower
Basic operation principle is after the flue gas that boiler is discharged is entered from cyclone lower section, to rise with cyclone rotation, while absorbing liquid
Flow downward after introducing from cyclone top, the mutual high speed rotary-cut in absorption tower of flue gas and absorbing liquid is blended, the continuous quilt of liquid
Gas breaking, and more cut more carefully, increase liquid specific surface area, the contact surface of gas and liquid is expanded, specific surface area is high
In even tens times of general more than ten times of void tower wet method sulphur removing and dust removing technology, gas-liquid-solid three-phase blending enhances the biography between them
Matter process, when flue gas passes through filter tube, makes absorbing liquid in emulsified state, and the absorbing liquid emulsifying for suspending is formed above cyclone
Floor area, SO in flue gas2Desulfurization and dedusting purpose is reached by absorption neutralization in this liquid.When this emulsion layer, to be stacked into constant weight backward
Under drain, and the absorbing liquid flow down from top replaces it, forms new emulsion layer, and such transition from the old to the new emulsion layer is constantly more
Higher desulfuration efficiency is kept in new, while and more tiny dust can be removed than general boiler cyclone dust extractor, desulfurization is removed
Two kinds of functions of dirt combine together.But it is technically also difficult to reach ultra-clean dust emission standard.
The content of the invention
The purpose of the present invention is to overcome the weak point of existing tower technology, the ultra-clean desulfurization and dedusting of a kind of pair of turbulent flow of proposition
Tower, the tower may be implemented in minimum drag, and the most short time, minimum space under minimum liquid-gas ratio, reaches gas-liquid and fully connects
Touch, flue gas is efficient under least energy consumption to improve desulfurization and dedusting effect to greatest extent in the gas-liquid-solid emulsifying mass transfer of high speed,
Desulfurization dust-removing efficiency can reach ultra-clean standard limit of smog release or even can reach zero-emission flue gas.
The ultra-clean desulfurized dust collection column of a kind of pair of turbulent flow proposed by the present invention, it is characterised in that the combination tower includes：Spray secondary tower
With spray king-tower, in the secondary tower body lower sides, top and tapered tower bottom gas approach, exhanst gas outlet and row are respectively arranged with
Slurry mouth, thick liquid discharge mouth is connected to the lowermost side wall of king-tower fluid reservoir by pipeline；Desulfurization breast is installed in the flue of gas approach
The injection apparatus for playing Venturi-tube action that liquid is blended with flue gas, injection apparatus are connected by pipeline with Pulp pump, Pulp pump
Entrance is connected on the bottom of king-tower fluid reservoir；The formula of multiple cyclone compositions is disposed with the tower body of the top of gas approach flue
Turbocharging is combined desulfation dust-extraction device, in the top arranging multiplayer shower of the compound desulfation dust-extraction device of turbocharging, spray
Multiple shower nozzles are installed on pipe；Every layer of shower is connected by pipeline with a circulating pump, and the entrance of circulating pump is by with valve
Pipeline be connected to the lower sides of king-tower slurry can, the exhanst gas outlet of secondary tower is connected to entering for king-tower flue gases duct by flue
Mouthful；In king-tower tower body lower sides, top and bottom are respectively arranged with gas approach, exhanst gas outlet and thick liquid discharge mouth, king-tower flue gas
Import is arranged on the top of the pump entry pipeline of secondary tower；It is provided with from bottom to up and bottom of towe thick liquid discharge mouth phase in the king-tower
Slurry pump even；The liquid storage area that king-tower inner bottom part is made up of reaction tank and tube seat is arranged on, is provided with liquid storage area by aeration tube,
The disturbance device that the roots blower being connected with aeration tube is constituted, the disturbance pump that disturbance device is connected by the pipeline with valve；Tower
Smoke inlet flue arrangement injection apparatus, multiple turbulent flow swirl-flow devices, the turbulent flow cyclone are arranged in the top of tower gas approach
Multiple rows of spray equipment is arranged in the top of device, often arranges spray equipment and is connected with a circulating pump by pipeline, every circulating pump
Entrance is connected by the pipeline with valve with liquid storage area, and the entrance of every circulating pump is also by the pipeline with valve and carbide slag
Pump is connected, and the entrance of carbide pulp pump is connected to carbide slag liquid pool and is connected；King-tower spray equipment top arranging multiplayer demister；Secondary tower
Flue entrance arrangement injection apparatus, be connected with the Pulp pump of king-tower by pipeline.
The population structure of each cyclone that the spray secondary tower body is arranged includes：Housing, is fixed on the pipe of the casing center
Road, the multiple blades between the housing and pipeline, the upper end of each blade is connected with the housing, and lower end is connected with pipeline
Connect.
The population structure of each rapid ball cyclone that the spray king-tower tower body is arranged includes：Housing, in being fixed on the housing
The pipeline of the heart, the multiple blades between the housing and pipeline, the upper end of each blade is connected with the housing, lower end with pipe
Road is connected；The lower end connection one of the pipeline hides petticoat pipe, and in the housing lower end connection one for hiding petticoat pipe periphery petticoat pipe is hidden；In the pipeline
Helix(ribbon type) agitator is installed, the helix(ribbon type) agitator is the strip plate of the helically banding being arranged in the pipeline；In the shell
The pipe outlet at body center also sets up an extension tube, and the extension tube upper and lower port is provided with the upper and lower closure plate of porous；In the prolongation
Baton round is placed with pipe.
The present invention is important to be characterized in that：
Desulfurization and dedusting double-column in series is proposed, using double pH value desulfurization agent emulsion operations, can be with maximum using double injection apparatus
The resistance of the reduction desulphurization system of change can make air-introduced machine increase the motive force of pa more than 600, and obtaining the effect of flue gas cool-down prevents
Because the cigarette temperature difference causes flue gas dry and wet to be overlapped on fouling at cyclone inlet, desulfuration efficiency and the safe operation of cyclone are affected.Cigarette
Gas starts the uniform cigarette pressure of preliminary desulfurization and dedusting prevents short circuit at indivedual cyclone inlets from improving desulfurization dust-removing efficiency as far as possible, using double
The cyclone of different leaves angle multi-form is to reach different purposes of design.Secondary tower uses wide-angle rapids ball cyclone
Can under the high-temperature flue gas of big flow with less resistance under keep high desulfurization dust-removing efficiency, be used in series double spray equipments
Desulfurization emulsion is set to be fully used.Secondary tower spray equipment injection emulsion from king-tower liquid storage tank bottommost, after desulfurization
Emulsion is flowed automatically to the bottommost of king-tower by the feed pipe for mortar of secondary tower bottom, is sent to vacuum belt machine by Pulp pump after aeration and is made Gypsum Fibrosum.
The purpose of so design is exactly desulfurization emulsion is greatly utilized, the Jing three-levels spray again of king-tower cyclone clean flue gas out
The emulsion cleaning of high pH value is drenched, the flue gas of ultra-clean is obtained even up to zero-emission.
Compound fuel gas desulfurization gas wash tower proposed by the present invention designs an energy based on research and development for many years and engineering practice work
Enough integrate the advantage of numerous such desulfurizing tower, and while the double turbulent flows of the double ph values that can improve such desulfurizing tower shortcoming are super clean
Only it is combined desulfurized dust collection column.By using double spray equipments, double pH value desulfurizing agents, in secondary tower king-tower flue gas in compound desulfurizing tower
Install emulsion flue gas mixed injection device in gas approach additional, install the turbulent flow eddy flow of different eddy flow angles, different types in double tower additional
Device,.The tower may be implemented in minimum drag, and the most short time, minimum space under minimum liquid-gas ratio, reaches gas-liquid and fully connects
Touch, flue gas is efficient under least energy consumption to improve desulfurization and dedusting effect to greatest extent in the gas-liquid-solid emulsifying mass transfer of high speed,
Desulfurization dust-removing efficiency can reach ultra-clean standard limit of smog release or even can reach the purpose of zero-emission flue gas.
Description of the drawings
Fig. 1 is the general structure schematic diagram of the present invention.
Fig. 2 is secondary tower cyclone layout drawing.
Fig. 3 is the general structure schematic diagram of a cyclone in secondary tower of the invention.
Fig. 4 is the horizontal schematic diagram of cyclone of Fig. 2.
Fig. 5 is king-tower rapids ball cyclone layout drawing.
Fig. 6 is the general structure schematic diagram of a rapid ball cyclone in king-tower of the invention.
Fig. 7 is the horizontal schematic diagram of rapid ball cyclone of Fig. 5.
Specific embodiment
The ultra-clean compound desulfurized dust collection column Structure Figure of the present invention a kind of pair of turbulent flow of proposition and embodiment describe in detail as follows：
Embodiments of the invention population structure as shown in figure 1, including：Spray secondary tower 1 and spray king-tower 2, in the secondary tower body
Lower sides, top and tapered tower bottom are respectively arranged with gas approach 101, exhanst gas outlet 102 and thick liquid discharge mouth 103, thick liquid discharge mouth
The 103 lowermost side walls that the fluid reservoir of king-tower 2 is connected to by pipeline；In the flue of gas approach 101 install desulfurization emulsion with
The injection apparatus 105 for playing Venturi-tube action of flue gas blending, injection apparatus are connected by pipeline with Pulp pump, and Pulp pump enters
Mouth is connected on the bottom (Pulp pump connecting pipe is omitted in figure) of king-tower fluid reservoir.In the tower of the top of the flue of gas approach 101
The compound desulfation dust-extraction device 104 of formula turbocharging of 24 cyclone compositions is disposed with vivo, is removed in the compound desulfurization of turbocharging
Three layers of shower 106 are arranged in the top of dirt device 104, and 84 shower nozzles are installed on shower；Every layer of shower passes through pipeline and
Individual circulating pump 107 is connected, and the entrance of circulating pump is by being connected to the lower sides of king-tower slurry can, secondary tower with valvular pipeline
1 exhanst gas outlet is connected to the entrance of the flue gases duct of king-tower 2 by flue；In the tower body lower sides of king-tower 2, top and bottom point
Gas approach 201, exhanst gas outlet 202 and thick liquid discharge mouth 203 are not provided with, gas approach 201 is arranged on the circulating pump 107 of secondary tower and enters
The top of mouth pipeline；It is provided with the slurry pump 2071 being connected with bottom of towe thick liquid discharge mouth from bottom to up in the king-tower；It is arranged on master
The liquid storage area 209 that tower inner bottom part is made up of reaction tank and tube seat, is provided with by aeration tube 2091, with aeration tube in liquid storage area 209
The disturbance device that connected roots blower 2092 is constituted, the disturbance pump 2093 that disturbance device is connected by the pipeline with valve；Tower
Smoke inlet flue arrangement injection apparatus 205, the top of tower gas approach arranges 32 swirl-flow devices 204 (for rapid ball whirlpool
The compound desulfation dust-extraction device of wheel supercharging), the cyclone device pattern is different from the turbulent flow cyclone of the angle of blade and secondary tower, rotation
Three row's spray equipments 206 are arranged in the top of stream device, are connected with three circulating pumps 2072 by pipeline, three circulating pumps 2072
Entrance is connected by the pipeline with valve with liquid storage area 209, the entrance of three circulating pumps 2072 also by the pipeline with valve with
Carbide pulp pump 2073 is connected, and the entrance of carbide pulp pump 2073 is connected to carbide slag liquid pool and is connected；The top of spray equipment 206 arrangement two
Layer demister 208.The flue entrance arrangement injection apparatus of secondary tower, are connected by pipeline with the Pulp pump of king-tower.
The operation principle of this combination tower is：Flue gas from boiler is sent to desulfurization secondary tower Jing after boiler dust remover and air-introduced machine
Gas approach, desulfurization emulsion and the flue gas sprayed by injection apparatus in flue stir hybrid cooling, be reduced blower fan resistance
Power and separation fluid effect, desulfurization slurry falls into wet flue gas in tower and enters blade rapids ball cyclone, in the pipe of helix(ribbon type) agitator region
Ball make irregular turbulence campaign, flue gas and desulfurization slurry revolve at a high speed to rub stirring with the hands and form emulsifying and obtain pole in the top of cyclone
High desulfuration efficiency, king-tower is entered by the spray desulfurization fume of the clean flue gas Jing two-layer spray equipments of cyclone by flue
Flue entrance, desulfurization slurry fall into secondary tower conical tower bottom by pipeline self to king-tower liquid storage tank bottommost.In the cigarette of king-tower
Road entrance installs another injection apparatus, and the lower section of uniform cyclone enters rotation in the U-shaped entrance tower of flue gas under its twitch
Stream device, cyclone is that, without rapid ball, blade is low-angle blade, is increased in cyclone because flue gas resistance becomes big flue gas flow rate
Top is held the rotation of desulfurization emulsion high-speed stirred and is rubbed with the hands, and the doctor solution of one layer of suspension is formed in desulfurization unit, absorbs two in flue gas
Sulfur oxide, gas-to-liquid contact specific surface area is big, and with little circulating fluid volume higher desulfurization dust-removing efficiency is reached.When due to weight
When reason flue gas support does not live desulfurization emulsion, the new emulsion of liquid storage tank that old emulsion deadweight flows downwardly into tower is suspended in cyclone again
Top continue desulfurization.The flue gas of cyclone outlet is quite clean, then through the washing of three floor height pH value desulfurization emulsions, then
Small water droplet in the washing and removal flue gas of two-layer demister clear water is discharged into air by chimney.At this moment reached super clean
Net flue gas has even reached the standard of zero-emission.The oxidation and aeration of pulp storage tank Jing air compressors and disturbance pump are uninterrupted in tower
Stirring, Jing slurries are pumped into vacuum belt machine and make final gypsum product when the density and pH value of desulfurization emulsion reach design load.
The specific embodiment of each part of this combination tower is respectively described below：
24 cyclones that spray secondary tower body is arranged on gas approach are as shown in Fig. 2 the overall knot of each cyclone
Structure as shown in Figure 3,4, including：Housing 1041, is fixed on the pipeline 1042 of the casing center, between the housing and pipeline
Multiple blades 1043, the upper end of each blade is connected with the housing, and lower end is connected with pipeline；
The rapid ball cyclones of spray king-tower tower body arranges on gas approach 32, as shown in figure 5, each rapid ball revolve
Flow the population structure of device as shown in Figure 6,7, including：Housing 2041, is fixed on the pipeline 2044 of the casing center, installed in the shell
Multiple blades 2042 between body and pipeline, the upper end of each blade is connected with the housing, and lower end is connected with pipeline；The pipeline
Lower end connection one hide petticoat pipe 2045, hide petticoat pipe 2046 in the housing lower end connection one for hiding petticoat pipe 2045 periphery；Peace in the pipeline
Equipped with helix(ribbon type) agitator 2043, the strip plate of helically banding of the helix(ribbon type) agitator 2043 to be arranged in the pipeline.
An extension tube 2047 is also set up in the pipe outlet of the casing center, the extension tube upper and lower port is provided with the upper and lower stifled of porous
Plate 20481,20482；Baton round 2049 is placed with the extension tube.
The diameter of the housing of each cyclone of turbine type super-charging accelerating gas fume desulfuration dedusting and rapid ball cyclone is general
For 400-800 millimeters【Such as 600 millimeters】, the pipe diameter at center is 100-200 millimeters【Such as 150 millimeters】Each blade table
Face can be in 150-180【Such as 165】Radian, it is 28 ° -45 ° that its short axle adds angle with horizontal plane【Such as 35 °】；Its major axis is in level
Face angle is 20 ° -50 °【Such as 45 °】.The width of blade reaches 100-400 millimeters【Such as 200 millimeters】, two adjacent blades mutually overlap
Folded 0-20 millimeters【Such as 10 millimeters】.There are 1.6 meters of long filter tubes above each cyclone and rapid ball cyclone
【1044】, as shown in fig. 6, the two ends of overanxious pipe are closed by card forms a casing, whole casing lifting is seated in the three of tower
On root crossbeam, the lower section of casing grows card 200mm or so by the filter tube of figure arrangement, the termination soldering stainless steel flange of pipe,
Cyclone is bolted on flange fixed.The cyclone of king-tower and secondary tower is made using 316L rustless steels.Except 316L not
Outer other all the exposed carbon-steel parts of rust head tower internals will serve as a contrast glass flake carries out anti-corrosion.
The diameter of major and minor tower is determined by process exhaust gas volumn and flue gas flow rate in designed tower.By taking king-tower as an example in tower
Maximum processes exhaust gas volumn and is designed as 580,000 M3, and flue gas flow rate presses 3.3m towers diameter design for distance between 7.8m. cyclones in tower
【200mm】Not affect installation.32 cyclones of king-tower conservative design.The cyclone of king-tower and the cyclone of secondary tower
It is otherwise varied, blade that secondary tower is adopted and horizontal plane angle for 50 ° of angles turbine type cyclone 24, the blade that king-tower is adopted with
Horizontal plane angle is the rapid ball cyclone 32 of 45° angle.Tower diameter is according to set by handled exhaust gas volumn and Ta Nei flue gases
Meter flow velocity determines, carries out the cyclone size of space according to tower diameter and the individual of determination cyclone is evenly arranged in rational scope
Number.
Three layers of spray are arranged in the top of cyclone, and each layer trickles through pipeline and is connected with the circulating pump of king-tower.Spraying layer
Top arrangement two-layer demister.Tower liquid storage tank base fabric is put disturbance device and is connected with disturbance pump by pipeline, top arrangement drum oxygen dress
Put and be connected with roots blower by pipeline.Bottom of towe arrangement blow-off pipe is connected with Pulp pump.Desulfurization slurry after oxidation is by Pulp pump
Take out toward vacuum belt machine and make Gypsum Fibrosum.Ultra-clean flue gas is discharged into greatly by chimney after tower exhaust pass connection chimney desulfurization and dedusting
Gas.
Secondary tower is entirely from security and stability using the turbine type rustless steel cyclone of 50 ° of angle blades and ensures desulfuration efficiency
Consider.The fast temperature of the big flow velocity of flue gas flow of secondary tower flue entrance is high, and flue gas resistance when through turbocyclone is big.In phase
The big blade of angle is adopted in the case of with quantity cyclone and the stream that can reduce system is engaged using flue gas injection device
Logical resistance.And the reduction of desulfuration efficiency with reduce circulating resistance and asynchronous, that is to say, that the reduction of desulfuration efficiency is affected compared with
It is few.Boiler is abnormal in short-term high temperature turbulent cyclone occurs also will not damage, if will be damaged using rapid ball cyclone baton round
Desulfurization work is set to be unable to safe and stable operation.And be that saturated air will not be caused normally to baton round because of high temperature into the flue gas of king-tower
Damage.The desulfurization dust-removing efficiency of turbulent flow cyclone is very high, and the desulfurization dust-removing efficiency of secondary tower is void tower desulfurization dust-removing efficiency and rapids
The sum of stream cyclone desulfurization dust-removing efficiency, so the flue gas from secondary tower out is very clean flue gas, if flue gas flow over loading
Or the ature of coal sulfur content that changes is too high, can also improve the PH of desulfurization slurry improve desulfuration efficiency to ensure by emulsion pumps
The fume emission parameter of whole desulphurization system.Secondary tower clean flue gas out take the shape of the letter U into king-tower under the drive of injection apparatus
The route and time for extending flue gas is evenly distributed on the lower section of rapid ball cyclone and enters cyclone.The rapid ball of 45° angle swirl vane
Cyclone desulfurization dust-removing efficiency is more taller than turbulent flow cyclone desulfurization dust-removing efficiency, and the sky of high pH value desulfurization slurry is sprayed at three layers
Under the efficient desulfurization and dedusting of the lower and rapid ball cyclone of tower spray, then Jing two-layer demisters drying and clean water under king-tower
The flue gas of discharge is exactly the flue gas of ultra-clean.Boiler induced-draft fan at least can increase in the presence of two ejectors of secondary tower and king-tower
Plus the motive force of whole desulphurization system 600pa.Double turbulent flow desulfurization and dedusting combination towers can reach according to ammonia process alkaline process magnesium oxide method
To zero-emission, environmental protection engineering is really achieved.The ultra-clean desulfurization and dedusting combination tower of double turbulent flows will have from now on very big performance prospect.
Double ultra-clean desulfurization and dedusting combination tower embodiments of turbulent flow of the invention are applied to 240 tons of coal-burning boilers or recirculating fluidized bed pot
Stove desulfurization and dedusting is newly-built or transformation project.Desulfurizing agent can use ammonia, alkali, magnesium oxide, Calx, limestone, carbide slag etc..This enforcement
Example adopts carbide slag.The present embodiment equipment design parameter is as follows：
Spray secondary tower：Diameter 6.6m 660000m3/ h materials：Carbon steel glass inner-lining scale
Secondary tower circulating pump A flows:441m3/ h lifts：45m powers of motor：110kw
Secondary tower circulating pump B flows：441m3/ h lifts：47m powers of motor：110kw
Tower circulating pump C flows：441m3/ h lifts：49m powers of motor：110kw
Turbulent flow cyclone：24
Spray king-tower：Diameter 7.8m materials：Carbon steel glass inner-lining scale
King-tower circulating pump A flows：1322m3/ h, lift：25m powers of motor：185kw
King-tower circulating pump B flows：1322m3/ h, lift：27m powers of motor：185kw
King-tower circulating pump C flows：1322m3/ h, lift：29m powers of motor：200kw
Turbulent flow cyclone：32
Disturbance pump discharge：250m3/ h lifts：30m powers of motor：55kw the using and the reserved
Carbide slag emulsion pump discharge：30m3/ h, lift：30m powers of motor：7.5kw the using and the reserved
Carbide slag slurry pump discharge：85m3/ h lifts：40m powers of motor：18.5kw dual-purposes one are standby
Oxidation fan flow：148m3/ min, blast：68.6kpa powers of motor：220kw the using and the reserved
Secondary tower burner design：Spiral is heart cone material：Carborundum 84
King-tower burner design：The solid material of spiral：Carborundum 144
The two-layer of king-tower demister 7800 × 200
Using a flow 100m3The fresh water (FW) water supplying pump of/h lift 40m；
Above each equipment is domestic conventional products.
Flue gas SO after the present embodiment purification2Content is less than 35mg/m3Dust content is less than 10mg/m3Desulfuration efficiency is more than
99.5%, efficiency of dust collection is more than 95%, and using ammonia process, alkaline process, magnesium oxide method flue gas can reach zero-emission.Single stove year desulfurization
27581/y。
Claims (6)
1. the ultra-clean desulfurization and dedusting combination tower of a kind of pair of turbulent flow, it is characterised in that the combination tower includes：Spray secondary tower and spray master
Tower, in the secondary tower body lower sides, top and tapered tower bottom gas approach, exhanst gas outlet and thick liquid discharge mouth are respectively arranged with, row
Slurry mouth is connected to the lowermost side wall of king-tower fluid reservoir by pipeline；In the flue of secondary tower gas approach install desulfurization emulsion with
The injection apparatus for playing Venturi-tube action of flue gas blending, injection apparatus are connected by pipeline with Pulp pump, the entrance of Pulp pump
It is connected on the bottom of king-tower fluid reservoir；The whirlpool of multiple cyclone compositions is disposed with the tower body of the top of secondary tower gas approach flue
The compound desulfation dust-extraction device of wheel supercharging, in the top arranging multiplayer shower of the compound desulfation dust-extraction device of turbocharging, shower
It is upper that multiple shower nozzles are installed；Every layer of shower is connected by pipeline with a circulating pump, and the entrance of circulating pump is by with valvular
Pipeline is connected to the lower sides of king-tower fluid reservoir, and the exhanst gas outlet of secondary tower is connected to entering for king-tower flue gases duct by flue
Mouthful；In king-tower tower body lower sides, top and bottom are respectively arranged with gas approach, exhanst gas outlet and thick liquid discharge mouth, king-tower flue gas
Import is arranged on the top of the pump entry pipeline of secondary tower；The slurry pump being connected with bottom of towe thick liquid discharge mouth is provided with the king-tower；
The liquid storage area that king-tower inner bottom part is made up of reaction tank and tube seat is arranged on, aeration tube is provided with liquid storage area, be connected with aeration tube
Roots blower constitute disturbance device, disturbance device by the pipeline with valve be connected disturbance pump；The gas approach of king-tower
Flue arranges injection apparatus, and multiple turbulent flow swirl-flow devices, the top of the turbulent flow swirl-flow devices are arranged in the top of king-tower gas approach
Multiple rows of spray equipment is arranged, spray equipment is often arranged and is connected with a circulating pump by pipeline, the entrance of every circulating pump passes through
Pipeline with valve is connected with liquid storage area, and the entrance of every circulating pump is also connected by the pipeline with valve with carbide pulp pump, electricity
The entrance of rock ballast pump is connected to carbide slag liquid pool；King-tower spray equipment top arranging multiplayer demister；The flue entrance cloth of secondary tower
Injection apparatus are put, is connected with the Pulp pump of king-tower by pipeline.
2. combination tower as claimed in claim 1, it is characterised in that the population structure of each cyclone that the spray secondary tower body is arranged
Including：Housing, is fixed on the pipeline of the casing center, the multiple blades between the housing and pipeline, each blade
Upper end is connected with the housing, and lower end is connected with pipeline.
3. combination tower as claimed in claim 1, it is characterised in that each turbulent flow swirl-flow devices that the spray king-tower tower body is arranged
Population structure includes：Housing, is fixed on the pipeline of the casing center, the multiple blades between the housing and pipeline, often
The upper end of individual blade is connected with the housing, and lower end is connected with pipeline；The lower end connection one of the pipeline hides petticoat pipe, is hiding outside petticoat pipe
The housing lower end in week connects another screening petticoat pipe；Helix(ribbon type) agitator is installed in the pipeline, the helix(ribbon type) agitator is to be arranged on
The strip plate of the helically banding in the pipeline；An extension tube is also set up in the pipe outlet of the casing center, the extension tube
Upper and lower port is provided with the upper and lower closure plate of porous；Baton round is placed with the extension tube.
4. the combination tower as described in Claims 2 or 3, it is characterised in that the diameter of the housing of each cyclone and turbulent flow swirl-flow devices
For 400-800 millimeters, the pipe diameter at center is 100-200 millimeters, and each blade surface is in 150-180 radians, blade and water
Plane included angle is 20 ° -50 °；The width of blade reaches 100-400 millimeters, and two adjacent blades overlap 0-20 millimeters；Each cyclone
And have a filter tube above turbulent flow swirl-flow devices.
5. combination tower as claimed in claim 4, it is characterised in that the swirl vane that the secondary tower is adopted and horizontal plane angle for
50 °, the swirl vane that king-tower is adopted is with horizontal plane angle for 45 °.
6. combination tower as claimed in claim 1, it is characterised in that the main and auxiliary tower uses the double pH value desulfurization emulsion fortune of Two-way Cycle
OK, in secondary tower the density of desulfurization emulsion 1.1,5.5,1.05, pH value is 6.5 for the desulfurization emulsion density in king-tower for pH value.
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| CN201510658837.XA CN105148718B (en) | 2015-10-12 | 2015-10-12 | Double-turbulence ultraclean desulfurization and dust removal compound tower |
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| CN201510658837.XA CN105148718B (en) | 2015-10-12 | 2015-10-12 | Double-turbulence ultraclean desulfurization and dust removal compound tower |
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| CN105148718B true CN105148718B (en) | 2017-04-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105521680A (en) * | 2016-02-02 | 2016-04-27 | 中南大学 | Desulphurization and dust removal integrated wet type flue gas purification device and method |
| CN107158922A (en) * | 2017-07-12 | 2017-09-15 | 江苏新春兴再生资源有限责任公司 | The desulfurizer and method of absorbing sulfur dioxide in flue are starched with lime/lime stone |
| CN107261808A (en) * | 2017-08-03 | 2017-10-20 | 北京威肯众合环保科技有限公司 | A kind of double ultra-clean desulfurized dust collection columns of spray of the double turbulent flows of single cycle |
| CN111229011A (en) * | 2020-03-10 | 2020-06-05 | 湖南正明环保股份有限公司 | System and method for performing flue gas desulfurization by using cement kiln tail return ash |
| CN114835239A (en) * | 2022-05-19 | 2022-08-02 | 通辽第二发电有限责任公司 | Concentration tower and flue gas wet desulphurization waste water concentration tower system with same |
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