CN101830438A - Method for purifying simple substance bromine from hydrobromic acid mother liquor - Google Patents
Method for purifying simple substance bromine from hydrobromic acid mother liquor Download PDFInfo
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- CN101830438A CN101830438A CN201010173214A CN201010173214A CN101830438A CN 101830438 A CN101830438 A CN 101830438A CN 201010173214 A CN201010173214 A CN 201010173214A CN 201010173214 A CN201010173214 A CN 201010173214A CN 101830438 A CN101830438 A CN 101830438A
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- bromine
- mother liquor
- hydrobromic acid
- simple substance
- acid mother
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Abstract
The invention discloses a method for purifying simple substance bromine from hydrobromic acid mother liquor. The method comprises the following step of: treating the hydrobromic acid mother liquor sequentially through the working procedures of primary oxidization, cooling, first-stage separation, secondary oxidization, second-stage separation, and the like. In the invention, the hydrobromic acid mother liquor is led into a first-stage bromine water separation flask, free chlorine directly oxidizes the mother liquor, and reacted bromine is separated through a second-stage separation flask to prepare a finished fine bromine product. Through the secondary separation, the chlorine content in the bromine is reduced to be below 0.01 percent from 0.05 percent, thereby greatly improving the purity of the finished bromine product.
Description
Technical field
The present invention relates to a kind of from hydrobromic acid mother liquor the method for purifying simple substance bromine, belong to chemical technology field.
Background technology
Hydrobromic acid mother liquor feeds the chlorine direct oxidation in distillation tower after, under the effect of saturation steam, simple substance bromine is resolved to come out, through being cooled to liquid bromine and bromine water, make the finished product bromine after bromine water is separated, but some free chlorine also carried secretly out, directly influenced the quality of bromine.To the processing of free chlorine, in still-process, often control by color of watching waste liquid and the content that detects bromide anion in the waste liquid, there are two defectives: 1, amount of chlorine deficiency, slops bromide anion too high levels has influenced yield; 2, chlorine is excessive, and a part of simple substance chlorine is steamed, and has influenced the quality of bromine.
Summary of the invention
The problem to be solved in the present invention provide a kind of from hydrobromic acid mother liquor the method for purifying simple substance bromine, can improve simple substance bromine purity.
For addressing the above problem, the technical solution used in the present invention is: a kind of from hydrobromic acid mother liquor the method for purifying simple substance bromine, this method may further comprise the steps:
(1), once oxidation
Hydrobromic acid mother liquor is fed the distillation tower from high-order mother liquor tank, and hydrobromic acid mother liquor generates simple substance bromine with the chlorine direct oxidation in distillation tower;
(2), cooling
The simple substance bromine that contains impurity enters the water cooler cooling, and simple substance bromine forms liquid bromine and bromine water through overcooling;
(3), flash trapping stage
Liquid bromine and bromine water enter the flash trapping stage bottle and carry out liquid bromine and separate with bromine water;
(4), secondary oxidation
In the flash trapping stage bottle, feed hydrobromic acid mother liquor and carry out the secondary oxidation reaction;
(5), secondary separates
The reacted bromine of secondary oxidation enters smart bromine storage tank after the secondary separating bottle separates, the chlorion that contains in the described simple substance bromine enters mother liquor holding tank after separating with bromine water.
Owing in distillation tower, be that some free chlorine is also carried secretly out in the process of parsing simple substance bromine, directly influenced the quality of bromine, the present invention is feeding an amount of hydrobromic acid mother liquor in the one-level bromine water-separating bottle, free chlorine direct oxidation mother liquor, reaction formula is as follows:
Br
-+Cl
2→Cl
-+Br
2
Chlorion enters mother liquor holding tank after separating with bromine water, and reacted bromine separates the smart bromine of finished product of back system through the secondary separating bottle, and the process secondary separation makes that bromine is chloride to reduce to below 0.01% by 0.05%, has improved finished product bromine purity greatly.
The present invention is further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Accompanying drawing is the structural representation of inventive embodiments.
Among the figure: the 1-mother liquor tank; The 2-mother liquor goes out pipe; 3-flash trapping stage bottle; 4-secondary separating bottle; The 5-mother liquor holding tank; The smart bromine storage tank of 6-; The 7-distillation tower; 8-chlorine inlet pipe; The 9-steam inlet tube; The 10-water cooler; 11-water coolant inlet pipe; The 12-cooling water outlet tube.
Embodiment
Embodiment, as shown in the figure, a kind of from hydrobromic acid mother liquor the method for purifying simple substance bromine, may further comprise the steps, hydrobromic acid mother liquor goes out pipe 2 by mother liquor and enters distillation tower 7 from high-order mother liquor tank 1, distillation tower 7 is connected with chlorine inlet pipe 8 and steam inlet tube 9, in distillation tower 7 from the recent chlorine of chlorine inlet pipe 8 directly with hydrobromic acid mother liquor generation oxidation after, under the effect of saturation steam, simple substance bromine is resolved to come out, distillation tower 7 connects water cooler 10, and water cooler 10 is provided with water coolant inlet pipe 11 and cooling water outlet tube 12, and simple substance bromine forms liquid bromine and bromine water through overcooling, water cooler 10 is connected with flash trapping stage bottle 3, described flash trapping stage bottle 3 is connected with secondary separating bottle 4, and secondary separating bottle 4 is connected with smart bromine storage tank 6 and mother liquor holding tank 5, and described flash trapping stage bottle 3 is communicated with mother liquor holding tank 5.
Owing in distillation tower 7, be that some free chlorine is also carried secretly out in the process of parsing simple substance bromine, directly influenced the quality of bromine, so flash trapping stage bottle 3 is communicated with high-order mother liquor tank 1 by pipeline, in the one-level bromine water-separating bottle, feed an amount of hydrobromic acid mother liquor, free chlorine direct oxidation mother liquor, reaction formula is as follows:
Br
-+Cl
2→Cl
-+Br
2
Chlorion enters mother liquor holding tank 5 after separating with bromine water, the smart bromine of finished product of reacted bromine system after secondary separating bottle 4 separates.
The present invention adopts such scheme, makes that bromine is chloride to reduce to below 0.01% by 0.05%, has improved finished product bromine purity greatly.
Claims (1)
1. the method for a purifying simple substance bromine from hydrobromic acid mother liquor, it is characterized in that: this method may further comprise the steps:
(1), once oxidation
Hydrobromic acid mother liquor is fed the distillation tower from high-order mother liquor tank, and hydrobromic acid mother liquor generates simple substance bromine with the chlorine direct oxidation in distillation tower;
(2), cooling
Simple substance bromine enters the water cooler cooling, and simple substance bromine forms liquid bromine and bromine water through overcooling;
(3), flash trapping stage
Liquid bromine and bromine water enter the flash trapping stage bottle and carry out liquid bromine and separate with bromine water;
(4), secondary oxidation
In the flash trapping stage bottle, feed hydrobromic acid mother liquor and carry out the secondary oxidation reaction;
(5), secondary separates
The reacted bromine of secondary oxidation enters smart bromine storage tank after the secondary separating bottle separates, the chlorion that contains in the described simple substance bromine enters mother liquor holding tank after separating with bromine water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010173214A CN101830438A (en) | 2010-05-14 | 2010-05-14 | Method for purifying simple substance bromine from hydrobromic acid mother liquor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010173214A CN101830438A (en) | 2010-05-14 | 2010-05-14 | Method for purifying simple substance bromine from hydrobromic acid mother liquor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101830438A true CN101830438A (en) | 2010-09-15 |
Family
ID=42714684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010173214A Pending CN101830438A (en) | 2010-05-14 | 2010-05-14 | Method for purifying simple substance bromine from hydrobromic acid mother liquor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101830438A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102849682A (en) * | 2011-06-27 | 2013-01-02 | 天津长芦汉沽盐场有限责任公司 | Industrial bromine refining method |
| CN106586963A (en) * | 2016-11-05 | 2017-04-26 | 泰州百力化学股份有限公司 | Method for recovering bromine from bromide wastewater and co-producing high-purity hydrobromic acid |
| CN113620250A (en) * | 2020-05-08 | 2021-11-09 | 青岛海湾精细化工有限公司 | Bromine-containing waste gas recovery method |
| CN114702008A (en) * | 2022-03-11 | 2022-07-05 | 潍坊润谱化学有限公司 | Preparation method of bromine |
-
2010
- 2010-05-14 CN CN201010173214A patent/CN101830438A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102849682A (en) * | 2011-06-27 | 2013-01-02 | 天津长芦汉沽盐场有限责任公司 | Industrial bromine refining method |
| CN102849682B (en) * | 2011-06-27 | 2014-10-15 | 天津长芦汉沽盐场有限责任公司 | Industrial bromine refining method |
| CN106586963A (en) * | 2016-11-05 | 2017-04-26 | 泰州百力化学股份有限公司 | Method for recovering bromine from bromide wastewater and co-producing high-purity hydrobromic acid |
| CN113620250A (en) * | 2020-05-08 | 2021-11-09 | 青岛海湾精细化工有限公司 | Bromine-containing waste gas recovery method |
| CN114702008A (en) * | 2022-03-11 | 2022-07-05 | 潍坊润谱化学有限公司 | Preparation method of bromine |
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Open date: 20100915 |