CN1273876A - Process for dusting and dsulfurizing fume - Google Patents
Process for dusting and dsulfurizing fume Download PDFInfo
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- CN1273876A CN1273876A CN 00103498 CN00103498A CN1273876A CN 1273876 A CN1273876 A CN 1273876A CN 00103498 CN00103498 CN 00103498 CN 00103498 A CN00103498 A CN 00103498A CN 1273876 A CN1273876 A CN 1273876A
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- agent
- surfactant
- dusting
- fume
- collecting agent
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Abstract
A process for dusting and desulfurizing fume includes passing the fume into absorption tower, where it reacts on the sprayed out removing agent containing sodium hydroxide solution, catcher and surfactant, adding lime milk to the mixed liquid after reaction, deposition and filter. Its advantages include cyclic use of sodium hydroxide solution, high dusting effect, less possessed ground area and no secondary pollution.
Description
The present invention relates to a kind of process for dusting and dsulfurizing fume, belong to field of environment protection.
SO
2Be main atmosphere pollution, once caused a lot of serious air pollution episodes in some countries.Be control SO
2Atmosphere pollution, people have carried out many research work aspect heavy oil desulfurization, and have obtained progress, but these technology do not cost dearly, and are exactly technical also full maturity not, large-scale application to also have many difficulties; Compare, flue gas desulfurization makes fast progress.What use morely at present is the alkali metal method, it is that flue gas and lime liquor are reacted with desulfurization, but it is because of using a large amount of fat limes, so the fixation means investment is big, floor space is big, the lime handling capacity is big, and is on-the-spot messy, easily causes secondary pollutions such as lime dust, in addition, often to the efficiency of dust collection reduction of dust in the flue gas, also caused pollution control not up to standard after the desulfurization, not thorough.
The object of the present invention is to provide that a kind of floor space is little, dust removal efficiency is high, the process for dusting and dsulfurizing fume of non-secondary pollution.
The object of the present invention is achieved like this:
A kind of process for dusting and dsulfurizing fume, this method is
(1) flue gas being entered the absorption tower has an effect with the agent spraying that removes that contains caustic lye of soda;
(2) in (1) reacted mixed liquor, add an amount of lime slurry;
(3) precipitation, filtration;
(4) the NaOH clear liquid is recycled.
Described removing also contained collecting agent, surfactant in the agent.
Described collecting agent is one or more any mixing in waterglass, potassium silicate, the polyphosphate sodium.Described surfactant is one or more any mixing in sodium alkyl benzene sulfonate, Nekal BX, paregal O-20, the bleeding agent.
Described collecting agent, surfactant and the weight ratio that removes water in the agent are 1: 1-2: 10000～1: 1-3: 1000.
Below the present invention is described in detail: (1) remove NaOH in the agent content and add lime slurry amount all with flue gas in SO
2Concentration is relevant, can decide according to the measurement result to flue gas when specifically using.(2) use NaOH as desulfurizing agent, its handling capacity is little, makes that factory's fixation means investment is little, and floor space is few, and non-secondary pollution.(3) this method generates NaOH clear liquid and calcium sulfate precipitation at last, and the NaOH clear liquid can be recycled, and has reduced cost and workload, and calcium sulfate can be made gypsum and use.(4) adopting collecting agent, surfactant dedusting, is to utilize increases such as waterglass, bleeding agent to remove the viscosity and the activity of agent solution, and ion surface has static, thereby dust in flue gas is adsorbed to fall, and has reduced secondary pollution.
The present invention has following advantage than prior art: (1) is because the NaOH that uses is Powdered, and reproducible utilization, thus to fixation means require low, floor space is little; (2) the collecting agent dust removal efficiency height of choosing can reach more than 95%, almost non-secondary pollution.
Introduce two embodiment of the present invention below:
Embodiment one:
With NaOH 27%, water 69.5%, sodium metasilicate 2%, Nekal BX 1.5% composition mixture; Again above solution being joined to make in 90% the water and remove agent, regenerates with milk of lime in PH after the desulfurization＞8.Desulfurization degree almost reaches 100%, and dust removal efficiency reaches 97%.
Embodiment two:
With NaOH 26%, water 70%, potassium silicate 2%, sodium alkyl benzene sulfonate 1%, bleeding agent 1% composition mixture; Above solution being joined in 90% the water, regenerates with milk of lime in PH after the desulfurization＞8 again.Desulfurization degree almost reaches 100%, and dust removal efficiency reaches 97.5%.
Claims (4)
1. process for dusting and dsulfurizing fume, it is characterized in that: this method is
(1) flue gas being entered the absorption tower has an effect with the agent spraying that removes that contains caustic lye of soda;
(2) in (1) reacted mixed liquor, add an amount of lime slurry;
(3) precipitation, filtration;
(4) the NaOH clear liquid is recycled.
2. method according to claim 1 is characterized in that described removing also contain collecting agent and surfactant in the agent.
3. method according to claim 2 is characterized in that described collecting agent is one or more any mixing in waterglass, potassium silicate, the polyphosphate sodium.Surfactant is one or more any mixing in sodium alkyl benzene sulfonate, Nekal BX, paregal O-20, the bleeding agent.
4. according to claim 2 or 3 described methods, the weight ratio that it is characterized in that collecting agent, surfactant and remove water in the agent is 1: 1-2: 10000～1: 1-3: 1000.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001034987A CN1166439C (en) | 2000-03-15 | 2000-03-15 | Process for dusting and dsulfurizing fume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001034987A CN1166439C (en) | 2000-03-15 | 2000-03-15 | Process for dusting and dsulfurizing fume |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1273876A true CN1273876A (en) | 2000-11-22 |
| CN1166439C CN1166439C (en) | 2004-09-15 |
Family
ID=4577031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001034987A Expired - Fee Related CN1166439C (en) | 2000-03-15 | 2000-03-15 | Process for dusting and dsulfurizing fume |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1166439C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844028A (en) * | 2010-03-02 | 2010-09-29 | 江苏工业学院 | Composite flue gas desulfurization agent and preparation method thereof |
| CN104492203A (en) * | 2014-12-04 | 2015-04-08 | 常州大学 | Gas-liquid-phase medium flue gas dust removal method |
| CN104923001A (en) * | 2015-06-05 | 2015-09-23 | 北京中晶佳镁环境科技股份有限公司 | Dedusting composition, desulfuration composition and usages |
| CN104941577A (en) * | 2015-04-22 | 2015-09-30 | 芜湖市鸿坤汽车零部件有限公司 | Banana peel modified active carbon kieselguhr particles for desulphurization and dust removal and preparation method for banana peel modified active carbon kieselguhr particles |
| EP2300168B1 (en) * | 2008-07-15 | 2019-10-02 | 3 Nine AB | A method and a filter for capturing airborne agents |
-
2000
- 2000-03-15 CN CNB001034987A patent/CN1166439C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2300168B1 (en) * | 2008-07-15 | 2019-10-02 | 3 Nine AB | A method and a filter for capturing airborne agents |
| CN101844028A (en) * | 2010-03-02 | 2010-09-29 | 江苏工业学院 | Composite flue gas desulfurization agent and preparation method thereof |
| CN104492203A (en) * | 2014-12-04 | 2015-04-08 | 常州大学 | Gas-liquid-phase medium flue gas dust removal method |
| CN104941577A (en) * | 2015-04-22 | 2015-09-30 | 芜湖市鸿坤汽车零部件有限公司 | Banana peel modified active carbon kieselguhr particles for desulphurization and dust removal and preparation method for banana peel modified active carbon kieselguhr particles |
| CN104923001A (en) * | 2015-06-05 | 2015-09-23 | 北京中晶佳镁环境科技股份有限公司 | Dedusting composition, desulfuration composition and usages |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1166439C (en) | 2004-09-15 |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040915 Termination date: 20150315 |
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| EXPY | Termination of patent right or utility model |