CN101757834A - Method for removing sulfur dioxide from gas mixture - Google Patents
Method for removing sulfur dioxide from gas mixture Download PDFInfo
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- CN101757834A CN101757834A CN200810234480A CN200810234480A CN101757834A CN 101757834 A CN101757834 A CN 101757834A CN 200810234480 A CN200810234480 A CN 200810234480A CN 200810234480 A CN200810234480 A CN 200810234480A CN 101757834 A CN101757834 A CN 101757834A
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- sulfur dioxide
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Abstract
The invention discloses a method for removing sulfur dioxide from a gas mixture, belonging to the technical field of chemical industry. The method has the technical scheme that an additive is added in the original sulfur-removing solution to achieve the purpose of enhancing the sulfur-removing capacity and the sulfur-removing purification degree of a device. The additive is added in a citric acid sulfur-removing solution so that the method can greatly enhance the sulfur-removing capacity of the original device and simultaneously enhance the sulfur-removing purification degree without the need of changing the original device.
Description
Technical field: the invention belongs to chemical technology field, be specifically related to a kind of sulfur dioxide method that from admixture of gas, removes.
Background technology: absorb with the natrium citricum method that the method for sulfur dioxide is to be put forward by Norway and Sweden scientist the seventies in the gas.It is reported, absorb good when content of sulfur dioxide is for 0.3-0.5% in the gas.The nontoxic free from extraneous odour of natrium citricum, nonflammable, production operation safety, absorption liquid recycles aborning, does not have " three wastes " discharging, and it should consume sulfuric acid than present widely used propylhomoserin method and consume ammonia, steam again, has many advantages.Only consume some steam and cooling water during natrium citricum method ordinary production, the natrium citricum loss is few, facts have proved that its production cost is low.It is not high that but existing method existence removes purity, and purifying rate is low, and outlet sulfur dioxide can not satisfy the deficiency of emission request.
Summary of the invention: the purpose of this invention is to provide the method that removes sulfur dioxide in a kind of admixture of gas, adopt this method, only need in former doctor solution, to add a small amount of additive, do not change original device, just can increase substantially the desulphurizing ability of original device, improve desulfurization purifying degree simultaneously.
The present invention is achieved in that
The technical solution used in the present invention is the method that adds additive in former desulfuration solution, to reach desulphurizing ability that improves device and the purpose that improves desulfurization purifying degree.The desulfurizing agent that this method adopts is the solution that adds two class additives in the citric acid doctor solution, and described additive comprises: (1) category-A additive, and it can improve the speed of solution absorbing hydrogen sulphide; (2) category-B additive, it can improve the reproduction speed of solution.The category-A additive is 1,4-butanediol 1,3-butanediol, 2, and the 3-butanediol, the category-A additive can be made up of one or more materials of above-mentioned substance.The category-B additive is butylamine, hexamethylenamine, amion acetic acid, croak pyridine, and the category-B additive can be made up of one or more materials of above-mentioned substance.
Category-A additive and category-B additive can be respectively or are added to simultaneously in the former doctor solution, and its addition is 5 grams per liters～10 grams per liters.
In the citric acid doctor solution, add the said additive of the present invention, need not change original device, just can increase substantially the desulphurizing ability of original device, improve desulfurization purifying degree simultaneously.
The specific embodiment: the present invention is described in detail below in conjunction with embodiment.
Embodiment 1
Example 1: join in the citric acid doctor solution with the said additive of the present invention, remove the hydrogen sulfide in the sulfuric acid furnace gas.
Additive composed as follows: 1,3-butanediol 5 grams per liters, amion acetic acid 3 grams per liters, as seen from Table 1, in gas liquid ratio 30～50 o'clock, the present technique desulfuration efficiency is better than citric acid, and solution is through bimestrial running, and the SO2 stable content is in the level less than 10mg/m3 in the purified gas.Therefore, use present technique can increase substantially the desulfurization purifying degree of citric acid device.
Table 1
Claims (3)
1. from admixture of gas, remove the method for sulfur dioxide, it is characterized in that in former citric acid desulfuration solution, adding the method for additive, the category-A additive, it can improve the speed of solution absorbing hydrogen sulphide; The category-B additive, it can improve the reproduction speed of solution.
2. method according to claim 1 is characterized in that the category-A additive is 1, and 4-butanediol 1,3-butanediol, 2,3-butanediol, category-B additive are butylamine, hexamethylenamine, amion acetic acid, croak pyridine.
3. method according to claim 1 is characterized in that category-A additive and category-B additive are added to respectively or simultaneously in the former doctor solution, and its addition is 5 grams per liters～10 grams per liters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810234480A CN101757834A (en) | 2008-11-19 | 2008-11-19 | Method for removing sulfur dioxide from gas mixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810234480A CN101757834A (en) | 2008-11-19 | 2008-11-19 | Method for removing sulfur dioxide from gas mixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101757834A true CN101757834A (en) | 2010-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810234480A Pending CN101757834A (en) | 2008-11-19 | 2008-11-19 | Method for removing sulfur dioxide from gas mixture |
Country Status (1)
| Country | Link |
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| CN (1) | CN101757834A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103432865A (en) * | 2013-07-09 | 2013-12-11 | 南京信息工程大学 | Composite absorbent used for flue gas desulphurization |
| CN107297123A (en) * | 2017-08-21 | 2017-10-27 | 太原师范学院 | A kind of use carboxylic acid salt solution absorbing sulfur dioxide in flue and the process of equality of temperature regeneration |
-
2008
- 2008-11-19 CN CN200810234480A patent/CN101757834A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103432865A (en) * | 2013-07-09 | 2013-12-11 | 南京信息工程大学 | Composite absorbent used for flue gas desulphurization |
| CN103432865B (en) * | 2013-07-09 | 2016-12-28 | 南京信息工程大学 | Composite absorber for flue gas desulfurization |
| CN107297123A (en) * | 2017-08-21 | 2017-10-27 | 太原师范学院 | A kind of use carboxylic acid salt solution absorbing sulfur dioxide in flue and the process of equality of temperature regeneration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Tao Weiping Document name: Notification of Publication of the Application for Invention |
|
| DD01 | Delivery of document by public notice |
Addressee: Tao Weiping Document name: Notification of before Expiration of Request of Examination as to Substance |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100630 |