CN101829485B - Method for desorbing sulfur dioxide in industrial exhaust gas utilizing barometric pressure microwave jet plasma technology - Google Patents
Method for desorbing sulfur dioxide in industrial exhaust gas utilizing barometric pressure microwave jet plasma technology Download PDFInfo
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- CN101829485B CN101829485B CN2010101687516A CN201010168751A CN101829485B CN 101829485 B CN101829485 B CN 101829485B CN 2010101687516 A CN2010101687516 A CN 2010101687516A CN 201010168751 A CN201010168751 A CN 201010168751A CN 101829485 B CN101829485 B CN 101829485B
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- barometric pressure
- jet plasma
- pressure microwave
- sulfur dioxide
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Abstract
The invention relates to a barometric pressure microwave jet plasma applied technology and the processing field of industrial exhaust gas containing sulfur, in particular to a method for desorbing sulfur dioxide in industrial boiler exhaust gas utilizing a barometric pressure microwave jet plasma technology. A barometric pressure microwave jet plasma discharges to generate barometric pressure microwave jet plasma by utilizing microwave excitation air at barometric pressure, directly injects the barometric pressure microwave jet plasma into a desulfuration reaction chamber and simultaneously infuses ammonia in the desulfuration reaction chamber. The invention has the beneficial effects of finishing desulfurization process to industrial exhaust gas containing sulfur and recovering thiamine from the industrial exhaust gas containing the sulfur; and the one-time desulfurization degree of the industrial exhaust gas reaches over 80%.
Description
Technical field
The present invention relates to the industrial smoke process field of barometric pressure microwave jet plasma application technology and sulfur-bearing, particularly a kind of method of utilizing barometric pressure microwave jet plasma technology to remove the Industrial Boiler sulfur dioxide in flue gas.
Background technology
The gas that plasma is a kind of ionization is made up of electronics, ion and neutral particle, and macroscopic view is electroneutral, is called as material the 4th attitude that is different from solid, liquids and gases.According to the difference of selected working gas, plasma can have strong oxidizing property or strong reducing property, thereby the oxidation or the reduction reaction that under condition of plasma, take place have very high efficient, can be used for waste gas, waste liquid, in the solid processing of giving up.Be applied to the atmospheric pressure plasma that is generally in environmental protection field at present, comprise forms such as radio frequency, electric arc, corona, dielectric barrier discharge.
In the processing of industrial smoke, plasma commonly used has corona plasma and dielectric barrier discharge plasma, and efficient is low, the shortcoming of poor stability but exist.And general directly utilize industrial smoke to produce high-intensity plasma to exist the too high shortcoming of energy consumption, be difficult to realize industrialized application.
Summary of the invention
Technical problem to be solved by this invention is to above-mentioned prior art a kind of method of utilizing barometric pressure microwave jet plasma to remove sulfur dioxide in the industrial smoke to be provided; Can the sulfur content in the industrial smoke be dropped to discharge standard; And energy consumption is lower, and efficient is high, good stability.
The present invention by the problem of the above-mentioned proposition of solution the employing solution be: utilize barometric pressure microwave jet plasma technology to remove the method for sulfur dioxide in the industrial smoke; It is characterized in that: the barometric pressure microwave jet plasma generator under atmospheric pressure utilizes the microwave excitation atmospherical discharges to produce barometric pressure microwave jet plasma; Barometric pressure microwave jet plasma is directly injected in the desulphurization reaction chamber, in the desulphurization reaction chamber, injects ammonia simultaneously.
Press such scheme, the used microwave frequency of described barometric pressure microwave jet plasma generator is 2.45GHz or 0.915GHz.
Press such scheme, described desulphurization reaction chamber is connected on the flue.
Press such scheme, described desulphurization reaction chamber is to be connected on the flue after a plurality of parallel connections again.
Press such scheme, described desulphurization reaction chamber is that cross section is rectangle or circular pipeline, and the barometric pressure microwave jet plasma generator is contained on the sidewall in desulphurization reaction chamber.
Press such scheme, contained sulfur dioxide mol ratio is 5: 1 in the interior flue gas through the desulphurization reaction chamber of air that interior generation of unit interval microwave jet plasma is used and unit interval.
Press such scheme, be injected in the unit interval in ammonia and unit interval in desulphurization reaction chamber that the mol ratio of contained sulfur dioxide is 2: 1 in the flue gas through the desulphurization reaction chamber.
Reaction mechanism of the present invention is: the ultraviolet photon that barometric pressure microwave jet plasma produces, high energy electron, strong oxidizing property hydroxyl, oxygen atom and oxonium ion synergy are with the SO in the flue gas
2Be oxidized to SO
3, SO
3Generate vaporific sulfuric acid with the steam reaction in the flue gas, with the NH that adds
3Reaction generates pulverous ammonium sulfate.
The chemical equation of reaction is:
H
2SO
4+2NH
3→(NH
4)
2SO
4
The invention has the beneficial effects as follows: the industrial smoke that can accomplish sulfur-bearing carries out the desulfurization processing, and can from the industrial smoke of sulfur-bearing, reclaim thiamines, and the once desulfurization rate of industrial smoke can reach more than 80%.
Description of drawings
Fig. 1 is the principle schematic that the present invention removes sulfur dioxide process in the industrial smoke, and wherein the desulphurization reaction chamber is single.
Fig. 2 is the principle schematic that another kind of the present invention removes sulfur dioxide process in the industrial smoke, and wherein the desulphurization reaction chamber is a plurality of parallel connections.
The specific embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to following enforcement.
Embodiment 1: as shown in Figure 1; The present invention is to provide a kind of method of utilizing barometric pressure microwave jet plasma to remove sulfur dioxide in the industrial smoke; Specifically: at first utilize barometric pressure microwave jet plasma generator 5 to excite discharge generation barometric pressure microwave jet plasma 7 through the air 3 that admission line 4 gets into; Barometric pressure microwave jet plasma 7 is directly injected in the desulphurization reaction chamber 6; The flue gas that produces in the boiler 1 feeds in the desulphurization reaction chamber 6 through flue 2; In flue, inject ammonia 8 simultaneously and get into desulphurization reaction chamber 6; Produce wherein in the used air of microwave jet plasma and unit interval that contained sulfur dioxide mol ratio is 5: 1 in the flue gas through the desulphurization reaction chamber in unit interval, the mol ratio that is injected into sulfur dioxide contained in ammonia and the interior flue gas through the desulphurization reaction chamber of unit interval in desulphurization reaction chamber in the unit interval is 2: 1, and barometric pressure microwave jet plasma 7 is with the SO in the flue gas
2Be oxidized to SO
3, SO
3Generate vaporific sulfuric acid with the steam reaction in the flue gas, with the NH that adds
3Reaction generates pulverous ammonium sulfate 9, and pulverous ammonium sulfate 9 becomes the byproduct of ammonium sulfate chemical fertilizer through nodulizer 11 again in the dust arrester 10, and the flue gas 13 after the desulfurization is discharged in the atmosphere through smoke discharging pipe 12.
The microwave frequency that barometric pressure microwave jet plasma generator of the present invention is adopted is 2.45GHz or 0.915GHz.The microwave power of separate unit barometric pressure microwave jet plasma generator is 3-5kW, and accessible exhaust gas volumn is 300-500m
3/ h.Smoke discharge amount according to required processing; Can adopt two even the parallel connection of a plurality of desulphurization reactions chamber; As shown in Figure 2; Parallel connection platform number confirms that by the flue gas total release of required processing and the treating capacity of separate unit barometric pressure microwave jet plasma generator the desulfurization degree of flue gas of the present invention can reach more than 80%.
Claims (7)
1. utilize barometric pressure microwave jet plasma technology to remove the method for sulfur dioxide in the industrial smoke; It is characterized in that: the barometric pressure microwave jet plasma generator under atmospheric pressure utilizes the microwave excitation atmospherical discharges to produce barometric pressure microwave jet plasma; Barometric pressure microwave jet plasma is directly injected in the desulphurization reaction chamber, in the desulphurization reaction chamber, injects ammonia simultaneously.
2. by the described method of utilizing barometric pressure microwave jet plasma technology to remove sulfur dioxide in the industrial smoke of claim 1, it is characterized in that: the used microwave frequency of described barometric pressure microwave jet plasma generator is 2.45GHz or 0.915GHz.
3. by the described method of utilizing barometric pressure microwave jet plasma technology to remove sulfur dioxide in the industrial smoke of claim 1, it is characterized in that: described desulphurization reaction chamber is connected on the flue.
4. by the described method of utilizing barometric pressure microwave jet plasma technology to remove sulfur dioxide in the industrial smoke of claim 1, it is characterized in that: described desulphurization reaction chamber is to be connected on the flue after a plurality of parallel connections again.
5. by claim 3 or the 4 described methods of utilizing barometric pressure microwave jet plasma technology to remove sulfur dioxide in the industrial smoke; It is characterized in that: described desulphurization reaction chamber is that cross section is rectangle or circular pipeline, and the barometric pressure microwave jet plasma generator is contained on the sidewall in desulphurization reaction chamber.
6. by claim 1 or the 2 described methods of utilizing barometric pressure microwave jet plasma technology to remove sulfur dioxide in the industrial smoke, it is characterized in that: contained sulfur dioxide mol ratio is 5: 1 in the interior flue gas through the desulphurization reaction chamber of air that interior generation of unit interval microwave jet plasma is used and unit interval.
7. by claim 1 or the 2 described methods of utilizing barometric pressure microwave jet plasma technology to remove sulfur dioxide in the industrial smoke, it is characterized in that: be injected in the unit interval in ammonia and unit interval in desulphurization reaction chamber that the mol ratio of contained sulfur dioxide is 2: 1 in the flue gas through the desulphurization reaction chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101687516A CN101829485B (en) | 2010-04-30 | 2010-04-30 | Method for desorbing sulfur dioxide in industrial exhaust gas utilizing barometric pressure microwave jet plasma technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101687516A CN101829485B (en) | 2010-04-30 | 2010-04-30 | Method for desorbing sulfur dioxide in industrial exhaust gas utilizing barometric pressure microwave jet plasma technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101829485A CN101829485A (en) | 2010-09-15 |
| CN101829485B true CN101829485B (en) | 2012-07-04 |
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ID=42713795
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|---|---|---|---|
| CN2010101687516A Expired - Fee Related CN101829485B (en) | 2010-04-30 | 2010-04-30 | Method for desorbing sulfur dioxide in industrial exhaust gas utilizing barometric pressure microwave jet plasma technology |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106540529A (en) * | 2016-12-23 | 2017-03-29 | 大连海事大学 | A kind of gas pollutant integrated treatment unit |
| CN109559988A (en) * | 2018-11-30 | 2019-04-02 | 德淮半导体有限公司 | The preparation method and device of silicon wafer |
| CN111495176A (en) * | 2020-03-27 | 2020-08-07 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | System for removing escaping ammonia and other pollutants in flue gas |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1123712A (en) * | 1995-02-16 | 1996-06-05 | 黎英豪 | Desulfurizing apparatus for flue gas by electronic chemical dry method |
| JPH10118448A (en) * | 1996-10-18 | 1998-05-12 | Sumitomo Heavy Ind Ltd | Method and apparatus for desulfurization, denitration and dust collection from flue gas |
| CN1475297A (en) * | 2003-07-04 | 2004-02-18 | 大连理工大学 | Steam and ammonia gas corona actirating stack gas desulfurizing denitrating method |
| CN1559651A (en) * | 2004-02-14 | 2005-01-05 | 中国工程物理研究院环保工程研究中心 | Exbaust gas purification method and device by pulse corona dicharging method |
| WO2006120860A1 (en) * | 2005-05-06 | 2006-11-16 | Gifu University | Dry simultaneous desulfurization/denitrification apparatus for exhaust gas |
| CN101422692B (en) * | 2008-11-24 | 2011-08-17 | 袁宝春 | Method and device for pulse corona plasma reaction and absorption catalysis desulfurization denitration |
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2010
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Granted publication date: 20120704 Termination date: 20160430 |