CN104609370A - Technology for extracting bromine through air blow-out method - Google Patents
Technology for extracting bromine through air blow-out method Download PDFInfo
- Publication number
- CN104609370A CN104609370A CN201310539897.0A CN201310539897A CN104609370A CN 104609370 A CN104609370 A CN 104609370A CN 201310539897 A CN201310539897 A CN 201310539897A CN 104609370 A CN104609370 A CN 104609370A
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- CN
- China
- Prior art keywords
- bromine
- technology
- blow
- raw material
- chlorine
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- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B7/00—Halogens; Halogen acids
- C01B7/09—Bromine; Hydrogen bromide
- C01B7/096—Bromine
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention provides a technology for extracting bromine through an air blow-out method. The technology adopting bromine extracted moderate brine (a blow-out waste liquid) as a raw material comprises the following steps: oxidizing the raw material by adopting chlorine to make bromide ions not extracted from the moderate brine form bromine molecules, carrying out reducing absorption by adopting sulfur dioxide and water to generate an absorption completion solution with the bromine concentration of 50g/l, and carrying out oxidative distillation to prepare bromine. The blow-out waste liquid can be used to extract bromine through the technology, acidification of the raw material liquid is not needed in the technology in order to effectively reduce resource waste, and the blow-out extraction rate reaches 80% or more.
Description
Technical field
The present invention relates to the production technique that a kind of blowout waste liquid utilizing Air blowing method to discharge carries out extracting bromine.
Background technology
Existing bromine by air blowing-out process uses brominated amount higher than the bittern of more than 70g/l, because bittern is slight alkalinity, for ensureing that the oxidation effectiveness of chlorine adopts sulfuric acid to carry out acidifying acidity pH value and is less than 4, oxidation chlorine is joined chlorine rate and is controlled between 100%-130%, reaches 40g/l when the brominated amount of blowout waste liquid is higher.Now, one is need acid adding to carry out bittern acidifying, and two is that the bromine that blowout waste liquid contains is higher, has the wasting of resources.
Summary of the invention
The present invention is a kind of blowout waste liquid utilizing Air blowing method to discharge, namely moderate bittern carries out the production technique extracting bromine, this technique mainly utilizes the moderate bittern (blowout waste liquid) after extracting bromine as raw material, then chlorine is adopted to be oxidized, the bromide anion be not suggested in moderate bittern is oxidized to molecular bromine, and then carry out Reducing and absorption through sulfurous gas and water, generate the brominated absorption at 50g/l and complete liquid, finally again through the technique of oxidation distillation bromine.
Specifically comprise following flow process:
1. the blowout waste collection of Air blowing method discharge, test to the blowout waste liquid that Air blowing method is discharged, brominated amount is at 40g/m
3left and right, pH value between 3 ± 0.5, in acid, then by Cemented filling to halogen pump;
2. blowout waste liquid step 1. obtained is as raw material, and then with chlorine generation redox reaction, oxidation is joined chlorine rate and controlled, between 120%-140%, bromide anion to be oxidized to molecular bromine;
3. molecular bromine step 2. obtained and sulfurous gas and water generation Reducing and absorption react, and the obtained brominated absorption at 50g/l completes liquid, for oxidation distillation bromine.
Innovation of the present invention and positively effect are:
Adopt of the present invention utilize moderate bittern to be raw material put forward bromine technique, blowout waste liquid can be utilized to carry out carrying bromine, and acidifying need not be carried out to stock liquid in technique, effectively reduce the wasting of resources, and blow out extraction rate reached to more than 80%.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing 1, the present invention is further illustrated:
The flow process of this technique is as follows:
First test to the blowout waste liquid that Air blowing method is discharged, brominated amount is at 40g/m
3left and right, pH value, between 3 ± 0.5, carries out collections storage in acid blowout liquid, then by Cemented filling to halogen pump.Then pass into chlorine at halogen pump discharge pipeline, make bromide anion and chlorine generation redox reaction in blowout waste liquid, oxidation is joined chlorine rate and is controlled, between 120%-140%, bromide anion to be oxidized to molecular bromine.The molecular bromine obtained and sulfurous gas and water generation Reducing and absorption are reacted, the obtained brominated absorption at 50g/l completes liquid, for oxidation distillation bromine again.
Above preferred embodiment of the present invention has been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (3)
1. a bromine extraction by air stripping process technique, it is characterized in that: this technology utilization extracts the moderate bittern after bromine as raw material, then chlorine is adopted to be oxidized, the bromide anion be not suggested in moderate bittern is oxidized to molecular bromine, and then carry out Reducing and absorption through sulfurous gas and water, generate the brominated absorption at 50g/l and complete liquid, finally again through oxidation distillation bromine.
2. a kind of bromine extraction by air stripping process technique according to claim 1, is characterized in that: the described brominated amount of moderate bittern is at 40g/m
3left and right, pH value is between 3 ± 0.5.
3. a kind of bromine extraction by air stripping process technique according to claim 1, is characterized in that: described chlorine carries out in the process be oxidized, and oxidation is joined chlorine rate and controlled between 120%-140%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310539897.0A CN104609370A (en) | 2013-11-01 | 2013-11-01 | Technology for extracting bromine through air blow-out method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310539897.0A CN104609370A (en) | 2013-11-01 | 2013-11-01 | Technology for extracting bromine through air blow-out method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104609370A true CN104609370A (en) | 2015-05-13 |
Family
ID=53144071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310539897.0A Pending CN104609370A (en) | 2013-11-01 | 2013-11-01 | Technology for extracting bromine through air blow-out method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104609370A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106390683A (en) * | 2016-08-30 | 2017-02-15 | 天津长芦海晶集团有限公司 | Automatic control and absorption technology of distillation produced bromine tail gas |
| CN108862198A (en) * | 2018-08-22 | 2018-11-23 | 天津海晶科技发展有限公司 | The automatic adjustment technique of bromine Reducing and absorption water processed |
| CN109650342A (en) * | 2019-02-22 | 2019-04-19 | 唐山海港旭宁化工有限公司 | Pressure-vaccum tower group |
-
2013
- 2013-11-01 CN CN201310539897.0A patent/CN104609370A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106390683A (en) * | 2016-08-30 | 2017-02-15 | 天津长芦海晶集团有限公司 | Automatic control and absorption technology of distillation produced bromine tail gas |
| CN108862198A (en) * | 2018-08-22 | 2018-11-23 | 天津海晶科技发展有限公司 | The automatic adjustment technique of bromine Reducing and absorption water processed |
| CN109650342A (en) * | 2019-02-22 | 2019-04-19 | 唐山海港旭宁化工有限公司 | Pressure-vaccum tower group |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150513 |