CN101653691A - Mixed solution for simultaneously desulfurizing and denitrating and application method thereof - Google Patents
Mixed solution for simultaneously desulfurizing and denitrating and application method thereof Download PDFInfo
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- CN101653691A CN101653691A CN200810054200A CN200810054200A CN101653691A CN 101653691 A CN101653691 A CN 101653691A CN 200810054200 A CN200810054200 A CN 200810054200A CN 200810054200 A CN200810054200 A CN 200810054200A CN 101653691 A CN101653691 A CN 101653691A
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- mixed solution
- solution
- flue gas
- denitrating
- application method
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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
- 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
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Abstract
The invention belongs to the technical field of environmental protection, and relates to the technology of simultaneously removing sulphur dioxide and oxynitride in flue gas of a boiler, in particularto a mixed solution for simultaneously desulfurizing and denitrating and an application method thereof. The mixed solution is characterized in that: the mixed solution is prepared from the followingchemical compositions: 0 to 30 mass percent of sodium carbonate solution and 0 to 30 mass percent of sodium chlorite solution. The mixed solution is nontoxic and harmless, is moderate in price, has aSO2 removal rate of 80 to 90 percent and a NO removal rate over 60 percent, and can be produced in batches on a large scale.
Description
Technical field:
The invention belongs to environmental technology field, is that the sulfur dioxide and the nitrogen oxide of boiler smoke removes simultaneously, and particularly a kind of wet method is the mixed solution and the application process of desulphurization denitration simultaneously.
Background technology:
SO in the flue gas
2With NOx be main atmosphere pollution, the two is administered respectively, not only floor space is big, and investment and operating cost height.For adapting at present and the needs of following Air Pollution Control, exploitation desulphurization denitration new technology, new equipment simultaneously is the trend of this field development.
At present, the flue gas desulfurization and denitrification integral process has caused the common concern of various countries.Integral process is incorporated in the desulphurization denitration technology in the same set of technological process and carries out, but not only cutting device quantity, reduce cost of investment and save operating cost, and can reduce refuse and produce, reach the purpose of desulphurization denitration again simultaneously.Popular in the world flue gas desulfurization and denitrification technology is elder generation's process denitrating flue gas at present, passes through flue gas desulfurization again, then by smoke stack emission.This technology has the high advantage of efficient, and desulfuration efficiency can reach more than 90%, and denitration efficiency also can be more than 80%.It is big that but its shortcoming is a SR, and floor space and investment are big, the operating cost height.The little China's actual conditions that are fit to particularly are not suitable for middle-size and small-size boiler flue gas desulfurization denitration.
Domestic similar technical research situation is: the wet type desulfurizing denitrification integral process comprises wet scrubbing and denitration (WSA-SNOx) technology, chloric acid oxidation technology (TriNOx-NOxSorb), wet type complexed absorption technology (Fe-EDTA metal chelate combined desulfurization and denitrification process), emulsification yellow phosphorus method desulfurizing and denitrifying process, urea and additive liquid desulfuration denitrating technique etc.Above technology is all invested bigger, the operating cost height, and also desulfurization off sulfide effect is not very desirable, is unfavorable for promoting.
Summary of the invention:
The objective of the invention is in order to solve above-mentioned the deficiencies in the prior art, and a kind of mixed solution and application process of while desulphurization denitration are provided, the present invention is with Na
2CO
3Solution and NaClO
2Solution mixes by a certain percentage, to the SO in the flue gas
2Carry out wet absorption simultaneously with NOx.The present invention is nontoxic, moderate cost, SO
2Extrusion rate at 80-90%, the extrusion rate of NO is more than 60%.
Technical scheme of the present invention is: a kind of mixed solution of while desulphurization denitration and application process, and it is characterized in that the chemical composition of mixed solution is: the mass concentration of sodium carbonate liquor is 0-30%; Sodium chlorite solution's mass concentration is 0-30%.
The application process of the mixed solution of above-mentioned while desulphurization denitration is that the liquid-gas ratio in the reaction tower is 0-30L/m with sodium carbonate liquor and sodium chlorite solution's the mixed solution reaction tower of packing into
3, superficial linear velocity in a column is 1-15m/s.
Advantage of the present invention and good effect:
1, the present invention can realize desulphurization denitration simultaneously in same reaction tower.
2, the present invention is nontoxic, moderate cost, SO
2Extrusion rate at 80-90%, the extrusion rate of NO can be produced on a large scale in batch more than 60%.
The specific embodiment
Operation principle: the present invention is the wet desulphurization denitration technology, is on the basis of wet desulphurization technology, adds the NaClO that can change NOx solubility in solution
2, make SO
2Absorbed by solution simultaneously with NOx.NaClO
2Solution has very strong oxidability, and it can be used as the absorption liquid of NOx.The Na of low concentration
2CO
3Adding can promote NaClO
2Solution is to the absorption of NOx, with Na
2CO
3And NaClO
2Mixing in the proper ratio, is a kind of absorption liquid of good wet type desulfurizing denitrating technique.NaClO
2Under sour environment, decompose easily, and adopt Na among the present invention
2CO
3Be main absorbent, can make NaClO
2In alkaline environment, be not easy to decompose.
Embodiment 1:
Enter Na in the absorption tower in unit interval
2CO
3With enter the SO in the flue gas in the absorption tower in the unit interval
2Mol ratio is 1.2; Enter NaClO in the absorption tower in unit interval
2The NOx mol ratio in the flue gas is 3 o'clock in the absorption tower with entering in the unit interval.Na in the absorbent solution of configuration
2CO
3Mass concentration is 5%, the absorbent solution NaClO of configuration
2Mass concentration is 1%, SO in the flue gas
2Removal efficiency more than 80%, denitration efficiency is at 15-35%.
Embodiment 2:
Enter Na in the absorption tower in unit interval
2CO
3With enter the SO in the flue gas in the absorption tower in the unit interval
2Mol ratio is 1.5; Enter NaClO in the absorption tower in unit interval
2The NOx mol ratio in the flue gas is 5 o'clock in the absorption tower with entering in the unit interval.Na in the absorbent solution of configuration
2CO
3Mass concentration is 8%, the absorbent solution NaClO of configuration
2Mass concentration is 2.5%, SO in the flue gas
2Removal efficiency more than 90%, denitration efficiency is at 30-50%.
Embodiment 3:
Enter Na in the absorption tower in unit interval
2CO
3With enter the SO in the flue gas in the absorption tower in the unit interval
2Mol ratio is 1.5; Enter NaClO in the absorption tower in unit interval
2The NOx mol ratio in the flue gas is 10 o'clock in the absorption tower with entering in the unit interval.Na in the absorbent solution of configuration
2CO
3Mass concentration is 5%, the absorbent solution NaClO of configuration
2Mass concentration is 5%, SO in the flue gas
2Removal efficiency more than 95%, denitration efficiency is at 70-80%.
Claims (2)
1, a kind of mixed solution of while desulphurization denitration and application process, it is characterized in that the chemical composition of mixed solution is: the mass concentration of sodium carbonate liquor is 0-30%; Sodium chlorite solution's mass concentration is 0-30%.
2, the mixed solution of a kind of while desulphurization denitration according to claim 1 and application process, it is characterized in that: the application process of the mixed solution of above-mentioned while desulphurization denitration is that the liquid-gas ratio in the reaction tower is 0-30L/m with sodium carbonate liquor and sodium chlorite solution's the mixed solution reaction tower of packing into
3, superficial linear velocity in a column is 1-15m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810054200A CN101653691A (en) | 2008-08-21 | 2008-08-21 | Mixed solution for simultaneously desulfurizing and denitrating and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810054200A CN101653691A (en) | 2008-08-21 | 2008-08-21 | Mixed solution for simultaneously desulfurizing and denitrating and application method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101653691A true CN101653691A (en) | 2010-02-24 |
Family
ID=41708275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810054200A Pending CN101653691A (en) | 2008-08-21 | 2008-08-21 | Mixed solution for simultaneously desulfurizing and denitrating and application method thereof |
Country Status (1)
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| CN (1) | CN101653691A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170228A (en) * | 2013-04-15 | 2013-06-26 | 武汉大学 | Mixed solution for flue gas denitrification and application method of mixed solution |
| CN106606922A (en) * | 2016-12-26 | 2017-05-03 | 合肥天翔环境工程有限公司 | Method for simultaneous desulfurization and denitrification of flue gas through wet method |
| CN106890544A (en) * | 2017-02-27 | 2017-06-27 | 湖南云平环保科技有限公司 | Sodium base desulphurization denitration absorbent and preparation method thereof |
| CN109647144A (en) * | 2018-12-25 | 2019-04-19 | 湖北蔚天环保科技有限公司 | Liquid phase catalyst, preparation and application |
| CN111495178A (en) * | 2020-04-08 | 2020-08-07 | 天津洁创环保科技有限公司 | Desulfurization and denitrification agent and preparation method and application thereof |
-
2008
- 2008-08-21 CN CN200810054200A patent/CN101653691A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170228A (en) * | 2013-04-15 | 2013-06-26 | 武汉大学 | Mixed solution for flue gas denitrification and application method of mixed solution |
| CN103170228B (en) * | 2013-04-15 | 2016-01-13 | 武汉大学 | A kind of denitrating flue gas mixed solution and application process thereof |
| CN106606922A (en) * | 2016-12-26 | 2017-05-03 | 合肥天翔环境工程有限公司 | Method for simultaneous desulfurization and denitrification of flue gas through wet method |
| CN106890544A (en) * | 2017-02-27 | 2017-06-27 | 湖南云平环保科技有限公司 | Sodium base desulphurization denitration absorbent and preparation method thereof |
| CN109647144A (en) * | 2018-12-25 | 2019-04-19 | 湖北蔚天环保科技有限公司 | Liquid phase catalyst, preparation and application |
| CN111495178A (en) * | 2020-04-08 | 2020-08-07 | 天津洁创环保科技有限公司 | Desulfurization and denitrification agent and preparation method and application thereof |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100224 |