CN201949810U - Device for integrally removing multiple pollutants from flue gas - Google Patents
Device for integrally removing multiple pollutants from flue gas Download PDFInfo
- Publication number
- CN201949810U CN201949810U CN2011200150231U CN201120015023U CN201949810U CN 201949810 U CN201949810 U CN 201949810U CN 2011200150231 U CN2011200150231 U CN 2011200150231U CN 201120015023 U CN201120015023 U CN 201120015023U CN 201949810 U CN201949810 U CN 201949810U
- Authority
- CN
- China
- Prior art keywords
- reaction tower
- outlet
- stock tank
- demister
- cooler
- 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.)
- Expired - Fee Related
Links
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 239000003546 flue gas Substances 0.000 title claims abstract description 22
- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 19
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 19
- 239000002002 slurry Substances 0.000 claims abstract description 27
- 238000006243 chemical reaction Methods 0.000 claims abstract description 26
- 230000005587 bubbling Effects 0.000 claims abstract description 25
- 230000003647 oxidation Effects 0.000 claims abstract description 11
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims abstract description 9
- 230000008676 import Effects 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 3
- 230000003009 desulfurizing effect Effects 0.000 abstract description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 239000000779 smoke Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000006477 desulfuration reaction Methods 0.000 description 6
- 230000023556 desulfurization Effects 0.000 description 6
- 239000003500 flue dust Substances 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- -1 other a spot of HF Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910004261 CaF 2 Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model relates to a device for integrally removing multiple pollutants from flue gas. The device comprises a booster fan (1), a cooler (2), a bubbling reaction tower (3), a dehydrator (7), a demister (4), a chimney (5), a dust cabin (8), a slurry groove (9) and an oxidation fan (6), wherein the air outlet of the booster fan (1) is connected with the inlet of the cooler (2); the outlet of the cooler (2) is connected with the middle inlet section of the bubbling reaction tower (3); the lower part of the bubbling reaction tower (3) is provided with a slurry pool; slurry is filled in the slurry pool; a lateral feeding slurry stirrer is arranged in the slurry pool; the bottom of the bubbling reaction tower (3) is provided with a slurry outlet; a gas outlet on the upper part of the bubbling reaction tower (3) is connected with the inlet of the demister (4); the outlet of the demister (4) is connected with the chimney (5); and the outlet of the oxidation fan (6) is connected to the inside of the slurry pool. When the device is used for desulfurizing, any other device or substance are not added, and niter, dioxin and other acid substances are removed at the same time.
Description
Technical field
The utility model relates to a kind of smoke pollution improvement technology, is specifically related to a kind of method of removing multiple pollutant in the flue gas.Belong to field of environment protection.
Background technology
Produce a large amount of gas pollutants in the flue gas that metal smelt, boiler combustion incineration of waste produce, mainly contain SO
2, NO
X, HF, HCl, flue dust and bioxin etc., country has assigned standard to be had the main factor that it carries out strict control: SO
2, NO
XThe control index of, bioxin.To SO
2The improvement technology mainly contain wet type limestone-gypsum method, circulating fluid-bed method, ammonia-thiamines method etc.; To NO
XRemoval mainly contain SCR, SNCR; The removal of Dui bioxin mainly contains active carbon adsorption etc.Desulfur technology is only at removing SO
2Denitration technology is only at removing NO
XThe technology of Tuo bioxin only reduces the pollution of bioxin, if make this three big contamination index in the flue gas all up to standard, then need technology such as desulfurization, denitration, Tuo bioxin are built serial connection together one by one, its treatment cost, operating cost are not only very big, and floor space is also very big, generally all can't realize.
Semi-dry desulphurization technology such as circulating fluid-bed also attempt to utilize its desulfurizer, in the spray slaked lime desulfurizing, spray into the less NO of ammoniacal liquor or urea again
XPollute, spray into activated carbon again to reduce the pollution of bioxin, yet, this method mixes mutually, disturbs, every kind of contaminant removal efficiency is reduced, and the waste residue amount that its desulfurization that more harmful is, denitration, Tuo bioxin are produced increases greatly, and this waste residue mixed in together is a poisonous waste, become bigger pollution problem, can't use in the reality.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of in desulfurization, does not increase any other device and material, and reaches denitration simultaneously, takes off bioxin and remove the device of multiple pollutant in the integrated removal flue gas of other acidic materials.
The purpose of this utility model is achieved in that the device of multiple pollutant in the integrated removal flue gas, comprise booster fan, cooler, bubbling class reaction tower, dewaterer, demister, chimney, powder storehouse, stock tank and oxidation fan, the booster fan air outlet links to each other with cooler inlet, cooler outlet links to each other with bubbling class reaction tower centre inlet section, bubbling class reaction tower bottom is provided with stock tank, be placed with slurries in the stock tank, be provided with the side-feeding type slurry mixer in the stock tank, bubbling class reaction tower bottom is provided with the slurries outlet, and the slurries outlet links to each other with dewaterer; The gas vent on bubbling class reaction tower top links to each other with the demister import, and the demister outlet links to each other with chimney; Described powder warehouse discharging mouth links to each other with the stock tank import, and the stock tank outlet links to each other with the stock tank of bubbling class reaction tower bottom; Described oxidation fan outlet inserts stock tank.Described slurries are to form to contain the configuration of 10--20% mass percent agstone.
Technical process:
Flue gas is after the booster fan supercharging, enter cooler, cool off with water smoke, water-cooled or gas-air cooling but method are carried out after the cooling processing flue-gas temperature being controlled within 70 ℃, then enter bubbling class reaction tower, flue gas enters the stock tank of tower bottom, slurries in the stock tank are to form to contain the configuration of 10--20% mass percent agstone, slurries are under the disturbance that the stirring and the air of agitator blasts, strong blending and effect of mass transmitting take place in slurries and flue gas, reach the effect of removing multiple pollutant, flue gas after being purified is come out from the clean flue gas rising passway in the tower, is discharged by chimney after the demister demist; Remove 250 used order agstones of pollutant and enter through the powder storehouse for stock tank, inject the stock tank of bottom in the tower after for slurrying in the stock tank, air is blasted by oxidation fan.Discharge from tower bottom through the reacted product of multiple pollutant removing, main product gypsum is utilized after the dewaterer dehydration, and other accessory substance is soluble in water, utilizes after treatment.
Chemical reaction mechanism:
1) desulfurization
2CaCO
3+?SO
2?+?0.5O
2?+?2H
2O?→?2CaSO
4·2H
2O?+?CO
2
2) denitration
4NO?+?3O
2?+?2H
2O?→4HNO
3；
4NO
2?+?O
2?+?2H
2O?→4HNO
3；
HNO
3?＋?CaCO
3?＝?Ca（NO
3）
2；
3) remove bioxin
The You bioxin exists in smelting and the incineration of waste flue gas, organic pollution such as bioxin mostly is adsorbed on the fine dust according to the study, the utility model method is because flue gas strong blending in slurries, not only stronger molten shallow lake effect is arranged to flue dust but also to fine dust, therefore, the flue dust in the flue gas and effectively removed attached to De bioxin on the fine dust.
4) take off HCl
2HCl?+?CaCO
3?→?CaCl
2?+?H
2O?+?CO
2
5) take off HF
2HF?+?CaCO
3?→?CaF
2?+?H
2O?+?CO
2
The beneficial effect of the invention is:
Adopt this method not only to remove SO
2, and to NO
X, HF, HCl, flue dust be Ji pollutants such as bioxin all have removal efficiency preferably.Only, under the effect of water and oxygen, achieve many things at one stroke, finish the effect of removing multiple pollution with a kind of medium that removes pollutant of calcium carbonate:
1) SO
2Remove efficient greater than 90%;
2) the NOX clearance is greater than 50%;
3) the HF clearance is greater than 90%;
5) the flue dust clearance is greater than 85%;
The clearance 30%--60% of organic pollutions such as 6) bioxin.
Description of drawings
Fig. 1 is the structural representation of the device of multiple pollutant in the integrated removal flue gas of the utility model.
Reference numeral among the figure:
Booster fan 1, cooler 2, bubbling class reaction tower 3, demister 4, chimney 5, oxidation oxidation fan 6, dewaterer 7, powder storehouse 8, confession stock tank 9, desulfurated plaster 10.
The specific embodiment
Referring to Fig. 1, Fig. 1 is the structural representation of the device of multiple pollutant in the integrated removal flue gas of the utility model.As seen from Figure 1, the device of multiple pollutant in the integrated removal flue gas of the utility model, described device comprises booster fan 1, cooler 2, bubbling class reaction tower 3, dewaterer 7, demister 4, chimney 5, powder storehouse 8, stock tank 9 and oxidation fan 6, booster fan 1 air outlet links to each other with cooler 2 imports, cooler 2 outlets link to each other with bubbling class reaction tower 3 centre inlet sections, bubbling class reaction tower 3 bottoms are provided with stock tank, be placed with slurries in the stock tank, be provided with the side-feeding type slurry mixer in the stock tank, bubbling class reaction tower 3 bottoms are provided with the slurries outlet, and the slurries outlet links to each other with dewaterer 7; The gas vent on bubbling class reaction tower 3 tops links to each other with demister 4 imports, and demister 4 outlets link to each other with chimney 5; Described powder storehouse 8 discharging openings link to each other with stock tank 9 imports, and stock tank 9 outlets link to each other with the stock tank of bubbling class reaction tower 3 bottoms; Described oxidation fan 6 outlets insert stock tank.
Embodiment 1:
Certain 120T/ of steel mill pelletizing production process system, the exhaust gas volumn of generation is 350,000 Nm
3/ h adopts the present invention to carry out smoke gas treatment, smoke inlet SO
2Concentration is from 2100mg/Nm
3, 100mg/Nm is reduced in outlet
3, desulfurization degree is more than 95%; Smoke inlet NO
XConcentration 210mg/Nm
3, 100mg/Nm is reduced in outlet
3Below, the denitration rate is more than 50%, inlet dust concentration 170 mg/Nm
3, outlet dust concentration 25 mg/Nm
3, clearance is more than 85%; Pollutants such as other a spot of HF, HCl, bioxin have all reached the removal effect of estimating.
Embodiment 2:
Certain special steel factory 265m
2Sintering machine production system, the exhaust gas volumn of generation are 1,050,000 Nm
3/ h adopts the present invention to carry out smoke gas treatment, smoke inlet SO
2Concentration is from 1500mg/Nm
3, 100mg/Nm is reduced in outlet
3, desulfurization degree is more than 93%; Smoke inlet NO
XConcentration 320mg/Nm
3, 150mg/Nm is reduced in outlet
3Below, the denitration rate is more than 50%, inlet dust concentration 200 mg/Nm
3, outlet dust concentration 30 mg/Nm
3, clearance is more than 85%; Pollutants such as other a spot of HF, HCl, bioxin have all reached the removal effect of estimating.
Claims (2)
1. the device of multiple pollutant in the integrated removal flue gas, it is characterized in that described device comprises booster fan (1), cooler (2), bubbling class reaction tower (3), dewaterer (7), demister (4), chimney (5), powder storehouse (8), stock tank (9) and oxidation fan (6), booster fan (1) air outlet links to each other with cooler (2) import, cooler (2) outlet links to each other with bubbling class reaction tower (3) centre inlet section, bubbling class reaction tower (3) bottom is provided with stock tank, be placed with slurries in the stock tank, be provided with the side-feeding type slurry mixer in the stock tank, bubbling class reaction tower (3) bottom is provided with the slurries outlet, and the slurries outlet links to each other with dewaterer (7); The gas vent on bubbling class reaction tower (3) top links to each other with demister (4) import, and demister (4) outlet links to each other with chimney (5); Described powder storehouse (8) discharging opening links to each other with stock tank (9) import, and stock tank (9) outlet links to each other with the stock tank of bubbling class reaction tower (3) bottom; Described oxidation fan (6) outlet inserts stock tank.
2. the device of multiple pollutant in a kind of integrated removal flue gas according to claim 1, it is characterized in that: described slurries are the agstone slurries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200150231U CN201949810U (en) | 2011-01-18 | 2011-01-18 | Device for integrally removing multiple pollutants from flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200150231U CN201949810U (en) | 2011-01-18 | 2011-01-18 | Device for integrally removing multiple pollutants from flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201949810U true CN201949810U (en) | 2011-08-31 |
Family
ID=44493939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200150231U Expired - Fee Related CN201949810U (en) | 2011-01-18 | 2011-01-18 | Device for integrally removing multiple pollutants from flue gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201949810U (en) |
-
2011
- 2011-01-18 CN CN2011200150231U patent/CN201949810U/en not_active Expired - Fee Related
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Effective date of registration: 20160830 Granted publication date: 20110831 |
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| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
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| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20180329 Granted publication date: 20110831 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20170118 |
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| CF01 | Termination of patent right due to non-payment of annual fee |