CN104998488A - Method for treating coal-fired flue gas pollutant - Google Patents
Method for treating coal-fired flue gas pollutant Download PDFInfo
- Publication number
- CN104998488A CN104998488A CN201510352105.8A CN201510352105A CN104998488A CN 104998488 A CN104998488 A CN 104998488A CN 201510352105 A CN201510352105 A CN 201510352105A CN 104998488 A CN104998488 A CN 104998488A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- coal
- fired flue
- titanium dioxide
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 239000003546 flue gas Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 6
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 24
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 12
- 239000012286 potassium permanganate Substances 0.000 claims abstract description 6
- 239000003054 catalyst Substances 0.000 claims abstract description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 238000006477 desulfuration reaction Methods 0.000 claims description 4
- 230000023556 desulfurization Effects 0.000 claims description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical class [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 3
- 238000005201 scrubbing Methods 0.000 claims description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract description 10
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000003245 coal Substances 0.000 abstract description 3
- 239000006227 byproduct Substances 0.000 abstract description 2
- 229920006395 saturated elastomer Polymers 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- 239000003153 chemical reaction reagent Substances 0.000 abstract 1
- 239000000428 dust Substances 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical group [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 2
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Catalysts (AREA)
Abstract
The invention discloses a method for treating coal-fired flue gas pollutant. According to the method, after wet dust collection of coal-fired flue gas, the flue gas is introduced into a desulphurization liquid for removal of sulfur dioxide, and then the desulphurized flue gas is introduced into a fixed bed reactor for reaction with ammonia gas so as to remove oxynitride, wherein the desulphurization liquid is saturated limewash containing potassium permanganate with a concentration of 1 to 3 g/L and titanium dioxide with a concentration of 0.01 to 0.02 g/L, and a catalyst used by the fixed bed reactor is composed of vanadium pentoxide, ferriferrous oxide and titanium dioxide. Compared with conventional treatment technology for coal-fired flue gas, the method provided by the invention has the advantages of high desulphurization and nitrogen removal efficiency, abundant reagent resources, recyclability of byproducts, high commercial value, low requirements on fire coal, good adaptability, sulfur dioxide removal rate of more than 99% and oxynitride removal rate of more than 95%.
Description
Technical field
The present invention relates to a kind of method of administering coal-fired flue-gas pollutant.
Background technology
Coal-fired flue-gas is the mixture of gas and flue dust, is the main cause polluting residential block air.The composition of flue gas is very complicated, and gas comprises SO
2, NO
2, NO, CO, CO
2deng pernicious gas, and ash content, coal grain, oil droplet and high-temperature split product etc.Therefore the pollution of flue gas to environment is the combined pollution of multiple poisonous substance.
Summary of the invention
The technical problem to be solved in the present invention overcomes existing defect, provides a kind of coal-fired flue gas treatment method.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
A kind of method of administering coal-fired flue-gas pollutant, after coal-fired flue-gas wet dedusting, flue gas is imported scrubbing CO_2 in doctor solution, then flue gas after desulfurization is passed into fixed bed reactors and ammonia gas react removes oxynitrides, described doctor solution is the saturated limewater containing the potassium permanganate of 1 ~ 3g/L and the titanium dioxide of 0.01 ~ 0.02g/L, and described fixed bed reactors catalyst used is made up of vanadic anhydride, tri-iron tetroxide and titanium dioxide.
Further, the mass ratio of described vanadic anhydride, tri-iron tetroxide and titanium dioxide is 1:(12-15): (4-6).
Fixed bed reaction temperature is 200-300 DEG C.
Compared with existing coal-fired flue-gas treatment technology, desulfurization of the present invention and nitric efficiency high, and the aboundresources of its medicament, the recyclable recycling of byproduct, commercial value is high, less demanding to fire coal, and adaptability is good, the extrusion rate of sulfur dioxide can reach more than 99%, and the extrusion rate of oxynitrides can reach more than 95%.
Detailed description of the invention
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
embodiment 1
A kind of coal-fired flue gas treatment method, after coal-fired flue-gas wet dedusting, flue gas is imported scrubbing CO_2 in doctor solution, then the flue gas after desulfurization is passed into fixed bed reactors and ammonia gas react removes oxynitrides, described doctor solution is the saturated limewater of the titanium dioxide of potassium permanganate containing 1g/L and 0.01g/L, described fixed bed reactors catalyst used by mass ratio be the vanadic anhydride of 1:12:4, tri-iron tetroxide and titanium dioxide forms, reaction temperature is 200 DEG C.
Be added to the water by quick lime, saturated limewash is made in reaction, then adds potassium permanganate, after dissolving, adds titanium dioxide, obtains doctor solution.The titanium dioxide added catalysis can improve oxidizing sulfur dioxide speed, thus improves sulfur dioxide removal efficiency.
embodiment 2
Differently from embodiment 1 to be, containing the potassium permanganate of 3g/L and the titanium dioxide of 0.02g/L in doctor solution, the catalyst of fixed bed reactors by mass ratio be the vanadic anhydride of 1:15:6, tri-iron tetroxide and titanium dioxide forms, reaction temperature is 300 DEG C.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. administer the method for coal-fired flue-gas pollutant for one kind, after coal-fired flue-gas wet dedusting, flue gas is imported scrubbing CO_2 in doctor solution, then flue gas after desulfurization is passed into fixed bed reactors and ammonia gas react removes oxynitrides, described doctor solution is the saturated limewater containing the potassium permanganate of 1 ~ 3g/L and the titanium dioxide of 0.01 ~ 0.02g/L, and described fixed bed reactors catalyst used is made up of vanadic anhydride, tri-iron tetroxide and titanium dioxide.
2. method according to claim 1, is characterized in that, the mass ratio of described vanadic anhydride, tri-iron tetroxide and titanium dioxide is 1:(12-15): (4-6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510352105.8A CN104998488A (en) | 2015-06-24 | 2015-06-24 | Method for treating coal-fired flue gas pollutant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510352105.8A CN104998488A (en) | 2015-06-24 | 2015-06-24 | Method for treating coal-fired flue gas pollutant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104998488A true CN104998488A (en) | 2015-10-28 |
Family
ID=54371507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510352105.8A Pending CN104998488A (en) | 2015-06-24 | 2015-06-24 | Method for treating coal-fired flue gas pollutant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104998488A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771581A (en) * | 2016-04-29 | 2016-07-20 | 中南大学 | Desulphurization and denitrogenation integrated method |
| CN106492781A (en) * | 2016-11-03 | 2017-03-15 | 新沂市中诺新材料科技有限公司 | The modified La V of La2O5/TiO2Desulphurization catalyst |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0514729A2 (en) * | 1991-05-18 | 1992-11-25 | Solvay Deutschland GmbH | Process for removal of ammonia contained in gases |
| CN101396656A (en) * | 2008-10-23 | 2009-04-01 | 清华大学 | Power plant flue-gas SCR denitration catalyst capable of preventing sulfur trioxide poisoning and preparation method thereof |
| CN102091517A (en) * | 2010-12-22 | 2011-06-15 | 环境保护部华南环境科学研究所 | Integrated absorption solution for simultaneous desulfuration, denitration and mercury removal and preparation method and application thereof |
| CN102294248A (en) * | 2011-05-30 | 2011-12-28 | 浙江大学 | Fe-Mn composite oxide catalyst for denitration and demercuration at the same time and preparation method thereof |
| CN102698578A (en) * | 2011-04-08 | 2012-10-03 | 上海同利环境科技有限公司 | Process for synchronously removing nitrogen oxide, dioxin and offensive odor in flue gas from waste incineration |
| CN104525216A (en) * | 2014-12-11 | 2015-04-22 | 清华大学 | Denitration catalyst for wide temperature window under high sulfur condition and preparation method thereof |
-
2015
- 2015-06-24 CN CN201510352105.8A patent/CN104998488A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0514729A2 (en) * | 1991-05-18 | 1992-11-25 | Solvay Deutschland GmbH | Process for removal of ammonia contained in gases |
| CN101396656A (en) * | 2008-10-23 | 2009-04-01 | 清华大学 | Power plant flue-gas SCR denitration catalyst capable of preventing sulfur trioxide poisoning and preparation method thereof |
| CN102091517A (en) * | 2010-12-22 | 2011-06-15 | 环境保护部华南环境科学研究所 | Integrated absorption solution for simultaneous desulfuration, denitration and mercury removal and preparation method and application thereof |
| CN102698578A (en) * | 2011-04-08 | 2012-10-03 | 上海同利环境科技有限公司 | Process for synchronously removing nitrogen oxide, dioxin and offensive odor in flue gas from waste incineration |
| CN102294248A (en) * | 2011-05-30 | 2011-12-28 | 浙江大学 | Fe-Mn composite oxide catalyst for denitration and demercuration at the same time and preparation method thereof |
| CN104525216A (en) * | 2014-12-11 | 2015-04-22 | 清华大学 | Denitration catalyst for wide temperature window under high sulfur condition and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771581A (en) * | 2016-04-29 | 2016-07-20 | 中南大学 | Desulphurization and denitrogenation integrated method |
| CN105771581B (en) * | 2016-04-29 | 2018-05-22 | 中南大学 | Desulfurization and denitrification integral method |
| CN106492781A (en) * | 2016-11-03 | 2017-03-15 | 新沂市中诺新材料科技有限公司 | The modified La V of La2O5/TiO2Desulphurization catalyst |
| CN106492781B (en) * | 2016-11-03 | 2019-03-12 | 上海实力机电设备成套有限公司 | La modified La-V2O5/TiO2Desulphurization catalyst |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Lu Jinman Inventor before: Fang Yao |
|
| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160504 Address after: 543100 the Guangxi Zhuang Autonomous Region Cangwu County town of Wuzhou City Guang Shu Village Door Group No. 1 Applicant after: Lu Jinman Address before: 545000 the Guangxi Zhuang Autonomous Region Liunan District of Liuzhou City Liu Tai Road No. 62 building 27 room 402 Applicant before: Fang Yao |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151028 |