CN104959008A - Method for removing sulfur dioxide in coal-fired flue gas - Google Patents
Method for removing sulfur dioxide in coal-fired flue gas Download PDFInfo
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- CN104959008A CN104959008A CN201510352325.0A CN201510352325A CN104959008A CN 104959008 A CN104959008 A CN 104959008A CN 201510352325 A CN201510352325 A CN 201510352325A CN 104959008 A CN104959008 A CN 104959008A
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- coal
- flue gas
- sulfur dioxide
- fired flue
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Abstract
The invention discloses a method for removing sulfur dioxide in coal-fired flue gas. After wet dust extraction is carried out on the coal-fired flue gas, the flue gas is guided into a doctor solution, and the doctor solution is a saturated magnesium hydrate solution including 1 g/L-3 g/L of potassium permanganate and 0.01 g/L-0.02 g/L of titanium dioxide. Compared with an existing desulphurization technology, the method is high in desulphurization efficiency, the resource of desulphurization absorbent is rich, by-products can be recycled and reutilized, the commercial value is high, the requirement for sulfur coal is not high, good adaptability is achieved, and the removal rate of the sulfur dioxide can be above 99 percent.
Description
Technical field
The present invention relates to a kind of method removing sulfur dioxide in coal-fired flue-gas.
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, 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 method removing sulfur dioxide in coal-fired flue-gas.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
Remove a method for sulfur dioxide in coal-fired flue-gas, after coal-fired flue-gas wet dedusting, imported by flue gas in doctor solution, described doctor solution is the saturated magnesium hydroxide solution containing the potassium permanganate of 1 ~ 3g/L and the titanium dioxide of 0.01 ~ 0.02g/L.
Compared with existing desulfur technology, desulfuration efficiency of the present invention is high, and the aboundresources of its desulfurization absorbent, the recyclable recycling of byproduct, commercial value is high, less demanding to sulphur coal, and adaptability is good, and the extrusion rate of sulfur dioxide can reach more than 99%.
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
Remove a method for sulfur dioxide in coal-fired flue-gas, after coal-fired flue-gas wet dedusting, imported by flue gas in doctor solution, described doctor solution is the saturated magnesium hydroxide solution of the titanium dioxide of potassium permanganate containing 1g/L and 0.01g/L.
Be added to the water by magnesia, saturated magnesium hydroxide solution is made in reaction, then adds potassium permanganate, after dissolving, adds titanium dioxide, obtains doctor solution.
embodiment 2
Differently from embodiment 1 to be, containing the potassium permanganate of 3g/L and the titanium dioxide of 0.03g/L in doctor solution.
The titanium dioxide added catalysis can improve oxidizing sulfur dioxide speed, thus improves sulfur dioxide removal efficiency.
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 (1)
1. remove a method for sulfur dioxide in coal-fired flue-gas, after coal-fired flue-gas wet dedusting, imported by flue gas in doctor solution, described doctor solution is the saturated magnesium hydroxide solution containing the potassium permanganate of 1 ~ 3g/L and the titanium dioxide of 0.01 ~ 0.02g/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510352325.0A CN104959008A (en) | 2015-06-24 | 2015-06-24 | Method for removing sulfur dioxide in coal-fired flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510352325.0A CN104959008A (en) | 2015-06-24 | 2015-06-24 | Method for removing sulfur dioxide in coal-fired flue gas |
Publications (1)
| Publication Number | Publication Date |
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| CN104959008A true CN104959008A (en) | 2015-10-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510352325.0A Pending CN104959008A (en) | 2015-06-24 | 2015-06-24 | Method for removing sulfur dioxide in coal-fired flue gas |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1565709A (en) * | 2003-06-27 | 2005-01-19 | 北京紫光威肯环境工程有限公司（中美合资） | Technique for catalytic oxidating desulfurizing products of flue gas |
| WO2012039516A1 (en) * | 2010-09-24 | 2012-03-29 | Takasago International Corporation | Deodorant composition for sulfides |
| CN102698551A (en) * | 2010-11-25 | 2012-10-03 | 西安瑞金源能源科技有限责任公司 | Wet magnesium oxide flue gas dust removal system and dust removal method |
| CN102755829A (en) * | 2012-08-06 | 2012-10-31 | 北京世能中晶能源科技有限公司 | Desulfurizer and application thereof |
| CN103194292A (en) * | 2013-04-25 | 2013-07-10 | 兰州熙瑞化工科技有限公司 | Boiler coal combustion-improving desulfurizing and denitrifying agent composition and preparation method thereof |
| CN103725347A (en) * | 2014-01-20 | 2014-04-16 | 高同柱 | Desulfurizing, denitrifying and decoking synergic additive for fire coal and preparation method of additive |
| CN103949287A (en) * | 2014-02-11 | 2014-07-30 | 党晓军 | Magnesium base flue gas wet desulfurization catalyst |
-
2015
- 2015-06-24 CN CN201510352325.0A patent/CN104959008A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1565709A (en) * | 2003-06-27 | 2005-01-19 | 北京紫光威肯环境工程有限公司（中美合资） | Technique for catalytic oxidating desulfurizing products of flue gas |
| WO2012039516A1 (en) * | 2010-09-24 | 2012-03-29 | Takasago International Corporation | Deodorant composition for sulfides |
| CN102698551A (en) * | 2010-11-25 | 2012-10-03 | 西安瑞金源能源科技有限责任公司 | Wet magnesium oxide flue gas dust removal system and dust removal method |
| CN102755829A (en) * | 2012-08-06 | 2012-10-31 | 北京世能中晶能源科技有限公司 | Desulfurizer and application thereof |
| CN103194292A (en) * | 2013-04-25 | 2013-07-10 | 兰州熙瑞化工科技有限公司 | Boiler coal combustion-improving desulfurizing and denitrifying agent composition and preparation method thereof |
| CN103725347A (en) * | 2014-01-20 | 2014-04-16 | 高同柱 | Desulfurizing, denitrifying and decoking synergic additive for fire coal and preparation method of additive |
| CN103949287A (en) * | 2014-02-11 | 2014-07-30 | 党晓军 | Magnesium base flue gas wet desulfurization catalyst |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151007 |