CN1100591C - High temperature plasma fume desulfurizing method - Google Patents
High temperature plasma fume desulfurizing method Download PDFInfo
- Publication number
- CN1100591C CN1100591C CN00132192A CN00132192A CN1100591C CN 1100591 C CN1100591 C CN 1100591C CN 00132192 A CN00132192 A CN 00132192A CN 00132192 A CN00132192 A CN 00132192A CN 1100591 C CN1100591 C CN 1100591C
- Authority
- CN
- China
- Prior art keywords
- temperature plasma
- fume
- high temperature
- flue gas
- desulfurizer
- 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
Abstract
The present invention relates to a high-temperature plasma fume desulfurizing method which is used for removing SO2 from fume by a coal-fired power plant or a boiler using fossil fuel. High-temperature plasma fume desulfurizer is isoionized by a high-temperature plasma reactor under high-temperature environment, and is directly sprayed into a furnace chamber or the fume in a flue positioned at the furnace tail; thus, high-temperature plasma fume desulfurizer can thoroughly mix and react with the fume so as to carry out devulcanization. The method has the advantages of less initial investment, low operation cost, small occupation area and high desulfurization efficiency.
Description
The present invention relates to a kind of high temperature plasma fume desulfurizing method, be applied to the coal-burning power plant or use in the boiler emission flue gas of fossil fuel and remove SO
2
Flue gas desulfurization, its method can be divided into wet method, semidry method and dry desulfurization.The flue gas desulfurization technique of countries in the world employing at present mainly contains: lime stone-gypsum method, simple and easy lime stone-gypsum method, sea water desulfuration method, ammonium phosphate compound fertilizer method, spray drying process, sorbent gunite, electron beam doctor treatment or the like.Spray drying process be with after the pulp in advance of desulfurizing agent lime stone with being pumped to atomizer, lime stone slurry is atomized in atomizer and carefully drips and enter in the flue gas of spray-drying absorber, while evaporating and SO
2Gas reaction, the reactant of generation dry state, this kind method also is called semi-dry process flue gas desulphurization.Electron beam flue gas desulfurization be by the electron beam exhaust smoke processing device to the flue gas irradiating electron beam, the energy major part of electron beam is absorbed by nitrogen, oxygen, water vapour, generates OH base, O atom, the HO be rich in chemical reactivity
2Bases etc. are with SO
2Reaction generates H
2SO
4, with the NH of pre-irradiation adding
3Carry out neutralization reaction, generate (NH
4)
2SO
4, reach the effect of solid sulphur, desulfurization.Though above-mentioned several desulfuration efficiency can reach more than 75%, but the desulphurization system device is huge, equipment complicated operations such as lime stone powder process pulping device, oxidation absorption plant, device for transporting objects, electron beam generating apparatus, and floor space is big, it is big to add dose, thereby one-time investment big (account for unit investment 15～20%), operating cost height (being about 0.045 yuan of RMB/KW.h) is so be very restricted in actual applications.
The purpose of this invention is to provide a kind of fume desulphurization method little, that operating cost is low, efficient is high of investing.
Method of the present invention be utilize the high-temperature plasma reactor with high temperature plasma fume desulfurizer under the high-temp combustion environment, after the plasma, directly be injected in the flue gas in boiler furnace or the stove back-end ductwork, make it fully to mix, react with flue gas, carry out desulfurization, its operating temperature is 7000～30000 ℃; The high temperature plasma fume desulfurizer that this method adopts is made of compositions such as magnesium metal, magnesia, magnesium carbonate, di-iron trioxide, rare earth cerium oxides, wherein the percentage by weight of each composition is respectively 50～70%, 10～25%, 5～15%, 3～7%, 1～5%, above-mentioned each composition all is ground into 140-280 order size, mixes.
Can produce a large amount of plasmas in the process of application the inventive method, with desulfurizing agent oxidation, decomposition, generation has the very nascent state desulfurizing agent of extensive chemical reactivity, not only contains alkaline matter, oxidizing substance in the nascent state desulfurizing agent simultaneously, there is catalyst simultaneously, makes SO in the flue gas
2React in a short period of time, transform, generate stable solid-state salts substances, thereby reach the purpose of flue gas desulfurization.After tested, SO in this method flue gas
2Removal efficiency adds dose by adjustment can reach 100%.
The present invention has the following advantages: the desulfuration efficiency height, operating cost is cheap, the desulphurization plant gross investment is few, floor space is little, do not produce secondary pollution, system architecture is simple, operation is easy etc., not only be applicable to large-sized boiler flue gas desulfurizations such as new power plant construction, the transformation that is particularly suitable for old unit is used.
Embodiment 1:
The test unit is a press group among the 25MW, boiler capacity 140t/h, coal-fired sulfur content about 1.5%, SO in the flue gas
2Content is at 1200～1400mg/Nm
3In the scope.Flue gas flow Q=2200～3000Nm
3/ h, flue gas flow rate v=7～13m/s, flue-gas temperature T=70～90 ℃.60 kilograms of magnesium metals, 20 kilograms of magnesia, 12 kilograms of magnesium carbonate, 5 kilograms of di-iron trioxides, 3 kilograms of rare earth cerium oxides are ground into 140-280 order size, mix and promptly make 100 kilograms of high temperature plasma fume desulfurizers.After utilizing the high-temperature plasma reactor with the desulfurizing agent plasma, directly be injected in the flue gas in the stove back-end ductwork, monitor flue-gas temperature, flow velocity and content simultaneously.During with the adding dose and be 3g/min of test desulfurizing agent, desulfuration efficiency can reach 50%: during the adding dose and be 6g/min of desulfurizing agent, desulfuration efficiency can reach 80%; During the adding dose and be 8g/min of desulfurizing agent, desulfuration efficiency can reach 100%, and can be continual and steady.
Embodiment 2:
The test unit is a press group among the 25MW, boiler capacity 140t/h, and coal-fired sulfur content about 1.5%, duration of test boiler fired coal amount is 18t/h, SO in the flue gas
2Content is at 1200～1400mg/Nm
3In the scope.The desulfurizing agent prepared among the embodiment 1 by after the plasma of high-temperature plasma reactor, is sprayed in the boiler furnace, and adding dose is 22Kg/h, continuous detecting deduster outlet SO
2Content, average desulfuration efficiency is more than 95%.
Claims (1)
1, a kind of high temperature plasma fume desulfurizing method, it is characterized in that it be utilize the high-temperature plasma reactor with high temperature plasma fume desulfurizer under hot environment, after the plasma, directly be injected in the flue gas in boiler furnace or the stove back-end ductwork, make it fully to mix, react with flue gas, carry out desulfurization, its operating temperature is 7000-30000 ℃; Wherein high temperature plasma fume desulfurizer is made of magnesium metal, magnesia, magnesium carbonate, di-iron trioxide, rare earth cerium oxide, wherein the percentage by weight of each composition is respectively 50-70%, 10-25%, 5-15%, 3-7%, 1-5%, above-mentioned each composition all is ground into 140-280 order size, mixes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00132192A CN1100591C (en) | 2000-12-21 | 2000-12-21 | High temperature plasma fume desulfurizing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00132192A CN1100591C (en) | 2000-12-21 | 2000-12-21 | High temperature plasma fume desulfurizing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1307924A CN1307924A (en) | 2001-08-15 |
| CN1100591C true CN1100591C (en) | 2003-02-05 |
Family
ID=4595038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00132192A Expired - Fee Related CN1100591C (en) | 2000-12-21 | 2000-12-21 | High temperature plasma fume desulfurizing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1100591C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102114379B (en) * | 2009-12-30 | 2013-04-03 | 中国环境科学研究院 | Desulfurizing agent and preparation and application thereof |
| CN102631834B (en) * | 2012-04-19 | 2015-03-25 | 深圳力合环保技术有限公司 | Flue gas desulfurization system and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5041710A (en) * | 1973-08-17 | 1975-04-16 | ||
| US5160708A (en) * | 1989-03-02 | 1992-11-03 | Kawasaki Jukogyo Kabushiki Kaisha | Dry type simultaneous desulfurization and dedusting apparatus and method of operation therefor |
| US5304234A (en) * | 1991-08-30 | 1994-04-19 | Chiyoda Corporation | Gas separation process and unit therefor |
| US5500195A (en) * | 1992-11-13 | 1996-03-19 | Foster Wheeler Energy Corporation | Method for reducing gaseous emission of halogen compounds in a fluidized bed reactor |
| CN2247049Y (en) * | 1996-01-11 | 1997-02-12 | 彭斯干 | Devulcanizer for smoke circulation fludization method |
| CN1154263A (en) * | 1996-01-11 | 1997-07-16 | 彭斯干 | Method and equipment for desulfurizing flue gas by circulation and fluidization |
-
2000
- 2000-12-21 CN CN00132192A patent/CN1100591C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5041710A (en) * | 1973-08-17 | 1975-04-16 | ||
| US5160708A (en) * | 1989-03-02 | 1992-11-03 | Kawasaki Jukogyo Kabushiki Kaisha | Dry type simultaneous desulfurization and dedusting apparatus and method of operation therefor |
| US5304234A (en) * | 1991-08-30 | 1994-04-19 | Chiyoda Corporation | Gas separation process and unit therefor |
| US5500195A (en) * | 1992-11-13 | 1996-03-19 | Foster Wheeler Energy Corporation | Method for reducing gaseous emission of halogen compounds in a fluidized bed reactor |
| CN2247049Y (en) * | 1996-01-11 | 1997-02-12 | 彭斯干 | Devulcanizer for smoke circulation fludization method |
| CN1154263A (en) * | 1996-01-11 | 1997-07-16 | 彭斯干 | Method and equipment for desulfurizing flue gas by circulation and fluidization |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1307924A (en) | 2001-08-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Hao et al. | A novel integrated method of vapor oxidation with dual absorption for simultaneous removal of SO2 and NO: Feasibility and prospect | |
| JP6171096B2 (en) | Semi-dry simultaneous desulfurization / denitration / demercury equipment and method using circulating fluidized bed | |
| US5171552A (en) | Dry processes for treating combustion exhaust gas | |
| CN101695627B (en) | Dry-method fume gas purification method and device for synchronous desulfurization and denitrification | |
| CN104492424B (en) | Ozone coupling MnO2/ Al2o3sO in catalysis oxidation flue gas2the method preparing sulphuric acid | |
| CN100531867C (en) | Method and apparatus for combined removing sulfur-dioxide and nitrogen oxide by mixed solution | |
| CA2924319C (en) | Treatment of nitrogen oxides in flue gas streams | |
| CN105295962A (en) | Method and device for reducing emission of NOx in waste flue gas of coke oven | |
| CN105477995A (en) | Method for removing sulfur trioxide from coal-fired flue gas | |
| CN102343212A (en) | Denitration process combining co-oxidation of ozone and hydrogen peroxide with wet absorption | |
| CN104801178A (en) | Method for simultaneous desulfurization-denitrification-demercuration based on combination of free radical pre-oxidation and wet absorption | |
| KR20130101751A (en) | The method of the simultaneous removal of nox and n2o by the multi stage reactions in fluidized bed combustor | |
| CN111939757A (en) | Method for removing nitrogen oxides in low-temperature flue gas | |
| CN109603462A (en) | A kind of technique using plasma purification flue gas of garbage furnace | |
| CN107321149A (en) | Low-temp desulfurization denitrating system in coking of coal | |
| CN104474858A (en) | Flue gas desulfurization and denitrification method and device and application of flue gas desulfurization and denitrification device | |
| CN103691267A (en) | Low-temperature synchronous denitration and desulfurization equipment and process for flue gas | |
| CN108458351B (en) | Solid waste incineration flue gas purification treatment method and system thereof | |
| KR101591229B1 (en) | NOx reduction system using microwave plasma based on selective catalytic reduction | |
| CN104258702A (en) | Flue gas desulfurization and denitration method and device through electron beams | |
| CN113769574A (en) | Flue gas full-temperature denitration agent and preparation method thereof | |
| CN1100591C (en) | High temperature plasma fume desulfurizing method | |
| CN103157357A (en) | Novel desulfurization-denitrification integrated device | |
| US20040208809A1 (en) | Method of removing SO3 from flue gases | |
| CN107398155A (en) | Low-temp desulfurization denitrating system in a kind of coking of coal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |