CN101659398A - Method for recovering bromine tail gas and chlorine gas in bromine production - Google Patents
Method for recovering bromine tail gas and chlorine gas in bromine production Download PDFInfo
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- CN101659398A CN101659398A CN200810054343A CN200810054343A CN101659398A CN 101659398 A CN101659398 A CN 101659398A CN 200810054343 A CN200810054343 A CN 200810054343A CN 200810054343 A CN200810054343 A CN 200810054343A CN 101659398 A CN101659398 A CN 101659398A
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- bromine
- tail gas
- chlorine
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Abstract
The invention relates to a method for recovering bromine tail gas and chlorine gas in bromine production, which is characterized by using acid liquor as an absorbing agent to absorb the chlorine gas and the bromine in a tail gas. The method has the following advantages: the utilization rate of chlorine is improved by effectively dissolving part of the chlorine in a complete solution by absorbing the tail gas with an absorption complete solution, and saving the introduction amount of the chlorine gas for oxidization when the complete solution enters a distillation tower, and such item can save200,000 yuan of financial resources each year; a bromine finished product is effectively recovered, wherein the bromine content in the emptied bromine vapor reaches up to 98.8 percent, the emptied bromine vapor is completely kept in the complete solution by an absorption tower, the bromine finished product is formed through distillation and cooling, and only such item saves about 400,000 yuan of financial resources; and the problems of environmental pollution are solved by absorbing the tail gas with the complete solution, and absorbing the tail gas with an alkali lye at the absorption tail end so as to achieve the zero release of chlorine and bromine of the emptied tail gas.
Description
Technical field
The invention belongs to the manufacturing of bromine, relate in particular to a kind of in bromine is produced the recovery method of bromine tail gas and chlorine.
Background technology
Bromine is red-brown or Vandyke brown liquid, and at room temperature volatilization is poisonous, is slightly soluble in water, is soluble in organic solutions such as hydrochloric acid, Hydrogen bromide.In the bromine production process, the production tail gas of distil process part adopts the emptying mode always for many years.This mode had both caused product loss, cost to raise, bring severe contamination to atmosphere again, blowing bromine production line emptying amount with the annual 1000 tons of air in certain saltern calculates, be respectively about 20 ton to airborne release bromine tail gas and chlorine every year, original method is to adopt plain boiled water to absorb or the bittern absorption, and plain boiled water absorbs directly second distillation, and it is little that bittern absorbs solubleness, absorb not exclusively, so effect is all undesirable.The industry demands developing a kind of bromine tail gas and chlorine recovery method urgently, with the contaminated solution problem of environment.
Summary of the invention
The present invention is in order to overcome deficiency of the prior art, provide a kind of in bromine is produced the recovery method of bromine tail gas and chlorine, utilize to absorb and to finish liquid and absorb tail gas and part chlorine effectively is dissolved in finish in the liquid, and the bromine vapor that makes emptying is stayed fully and is finished in the liquid, form the finished product bromine by distillation, cooling back, solved problem of environmental pollution.
The present invention is achieved through the following technical solutions for achieving the above object: a kind of in bromine is produced the recovery method of bromine tail gas and chlorine, it is characterized in that: utilize acid liquid to absorb chlorine and bromine in the tail gas as absorption agent.
Described acid liquid adopts the absorption in the bromine production process to finish liquid as chlorine and bromine in the absorption agent absorption tail gas.
The absorption technique route of described absorption tail gas is that tail gas recycle is delivered to the bottom, absorption tower by pipeline, tail gas is finished the spray of liquid from bottom to top through secondary acidity in the absorption tower, chlorine in the tail gas is dissolved in finishes in the liquid, form the finished product bromine with finishing liquid through second distillation, cooling back again.
Beneficial effect of the present invention: improve the utilization ratio of chlorine, utilize to absorb and finish liquid and absorb tail gas and part chlorine effectively is dissolved in finish in the liquid, when finishing liquid and enter distillation tower, saved the feeding amount of oxidation, thereby improved the utilization ratio of chlorine with chlorine.Can economize on the use of funds this every year 200000 yuan; Efficient recovery bromine finished product, bromine content is stayed the bromine vapor of emptying fully by the absorption tower and is finished in the liquid up to 98.8% in the emptying bromine vapor, becomes the finished product bromine by distillation, cooling, and only this economizes on the use of funds nearly 400,000 yuan; Solved problem of environmental pollution, utilized and finish liquid absorption tail gas, and, make emptying tail gas reach the zero release of chlorine, bromine absorbing terminal alkali lye absorption.
Description of drawings
Fig. 1 is a bromine tail gas recycle schema.
Embodiment
Below in conjunction with preferred embodiment, to details are as follows according to embodiment provided by the invention:
A kind of in bromine is produced the recovery method of bromine tail gas and chlorine, utilize acid liquid to absorb chlorine and bromine in the tail gas as absorption agent.Described acid liquid adopts the absorption in the bromine production process to finish liquid as chlorine and bromine in the absorption agent absorption tail gas.The absorption technique route of described absorption tail gas is that tail gas recycle is delivered to the bottom, absorption tower by pipeline, tail gas is finished the spray of liquid from bottom to top through secondary acidity in the absorption tower, chlorine in the tail gas is dissolved in finishes in the liquid, form the finished product bromine with finishing liquid through second distillation, cooling back again.The described liquid of finishing is Hydrogen bromide and vitriolic mixing liquid.Bromine production technique: bromated bittern is squeezed into the pressure-vaccum tower with pump, add acid successively at pump outlet, chlorine carries out acidifying, chlorination to bittern.PH value reaches 3-4 during acidifying.Joining the chlorine rate during oxidation is 115-120%.This moment, bromide anion in pipeline was oxidized to free bromine, was blown out by air after entering the pressure-vaccum tower.The pressure-vaccum tower comprises four chambers, and one of them is to blow out the chamber, and other three is absorption chamber.The absorption chamber that the bromine vapor that blows out enters the pressure-vaccum tower absorbs with sulfurous gas.Its reaction equation is: 2Br
-+ Cl
2=Br
2+ 2Cl
-Sulfurous gas produces with combustion of sulfur, sends into the pressure-vaccum tower with roots blower.It and bromine vapor reaction generate Hydrogen bromide, can be that bromine vapor is absorbed.Its reaction equation is: Br
2+ 2H
2O+SO
2=2HBr+H
2SO
4Liquid after the absorption is at pressure-vaccum tower internal recycle, reaches behind the 10 ripple magnesium degree to squeeze into pump to finish the liquid storage tank groove.Finish liquid and squeeze into distillation tower with pump, feed steam in the tower, chlorine steams bromine, becomes finished product bromine packing behind cooling and purifying.Equation: 2HBr+Cl
2=2HCl+Br
2↑.It reclaims principle is to utilize chlorine, the bromine solubleness in acid solution to be greater than the characteristics of the solubleness in water or the bittern.
The above only is preferred embodiment of the present invention, is not structure of the present invention is done any pro forma restriction.Every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (3)
1. the recovery method of bromine tail gas and chlorine in bromine is produced is characterized in that: utilize acid liquid to absorb chlorine and bromine in the tail gas as absorption agent.
2, according to claim 1 in bromine is produced the recovery method of bromine tail gas and chlorine, it is characterized in that: described acid liquid adopts the absorption in the bromine production process to finish liquid to absorb chlorine and bromine in the tail gas as absorption agent.
3, according to claim 1 and 2 in bromine is produced the recovery method of bromine tail gas and chlorine, it is characterized in that: the absorption technique route of described absorption tail gas is that tail gas recycle is delivered to the bottom, absorption tower by pipeline, tail gas is finished the spray of liquid from bottom to top through secondary acidity in the absorption tower, chlorine in the tail gas is dissolved in finishes in the liquid, form the finished product bromine with finishing liquid through second distillation, cooling back again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810054343A CN101659398A (en) | 2008-08-29 | 2008-08-29 | Method for recovering bromine tail gas and chlorine gas in bromine production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810054343A CN101659398A (en) | 2008-08-29 | 2008-08-29 | Method for recovering bromine tail gas and chlorine gas in bromine production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101659398A true CN101659398A (en) | 2010-03-03 |
Family
ID=41787684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810054343A Pending CN101659398A (en) | 2008-08-29 | 2008-08-29 | Method for recovering bromine tail gas and chlorine gas in bromine production |
Country Status (1)
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|---|---|
| CN (1) | CN101659398A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102423605A (en) * | 2011-08-26 | 2012-04-25 | 莱州诚源盐化有限公司 | Recovery device and recovery method of tail gas of bromine packing |
| CN104229739A (en) * | 2014-10-09 | 2014-12-24 | 山东天一化学股份有限公司 | Processing method for extracting bromine from brine by composite blowing and absorbing method |
| CN108144416A (en) * | 2018-01-03 | 2018-06-12 | 国家海洋局天津海水淡化与综合利用研究所 | One kind blows bromine tail gas overall process recovery method and equipment |
| CN111036054A (en) * | 2019-12-18 | 2020-04-21 | 天津长芦汉沽盐场有限责任公司 | Tail gas absorption device and method in air-blowing bromine production |
| CN114702008A (en) * | 2022-03-11 | 2022-07-05 | 潍坊润谱化学有限公司 | Preparation method of bromine |
| CN116873867A (en) * | 2023-09-08 | 2023-10-13 | 珙县华洁危险废物治理有限责任公司成都分公司 | Harmless treatment method and system for high-purity bromine |
-
2008
- 2008-08-29 CN CN200810054343A patent/CN101659398A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102423605A (en) * | 2011-08-26 | 2012-04-25 | 莱州诚源盐化有限公司 | Recovery device and recovery method of tail gas of bromine packing |
| CN104229739A (en) * | 2014-10-09 | 2014-12-24 | 山东天一化学股份有限公司 | Processing method for extracting bromine from brine by composite blowing and absorbing method |
| CN104229739B (en) * | 2014-10-09 | 2016-08-17 | 山东天一化学股份有限公司 | A kind of compound pressure-vaccum extracts the process of bromine in bittern |
| CN108144416A (en) * | 2018-01-03 | 2018-06-12 | 国家海洋局天津海水淡化与综合利用研究所 | One kind blows bromine tail gas overall process recovery method and equipment |
| CN108144416B (en) * | 2018-01-03 | 2020-10-13 | 国家海洋局天津海水淡化与综合利用研究所 | Bromine blowing tail gas overall process recovery method and equipment |
| CN111036054A (en) * | 2019-12-18 | 2020-04-21 | 天津长芦汉沽盐场有限责任公司 | Tail gas absorption device and method in air-blowing bromine production |
| CN114702008A (en) * | 2022-03-11 | 2022-07-05 | 潍坊润谱化学有限公司 | Preparation method of bromine |
| CN116873867A (en) * | 2023-09-08 | 2023-10-13 | 珙县华洁危险废物治理有限责任公司成都分公司 | Harmless treatment method and system for high-purity bromine |
| CN116873867B (en) * | 2023-09-08 | 2023-11-10 | 珙县华洁危险废物治理有限责任公司成都分公司 | Harmless treatment method and system for high-purity bromine |
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Open date: 20100303 |