CN103691256A - Method for separating chlorine gas from hydrogen chloride in trifluoroacetic acid production - Google Patents
Method for separating chlorine gas from hydrogen chloride in trifluoroacetic acid production Download PDFInfo
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- CN103691256A CN103691256A CN201310693771.9A CN201310693771A CN103691256A CN 103691256 A CN103691256 A CN 103691256A CN 201310693771 A CN201310693771 A CN 201310693771A CN 103691256 A CN103691256 A CN 103691256A
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- China
- Prior art keywords
- hydrogen chloride
- carbon tetrachloride
- chlorine
- chlorine gas
- tetrachloride liquid
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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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Abstract
The invention discloses a method for separating chlorine gas from hydrogen chloride in trifluoroacetic acid production. The method comprises the following steps: introducing a mixed gas of chlorine gas and hydrogen chloride into an absorption tower utilizing carbon tetrachloride liquid as an absorbent; driving the carbon tetrachloride liquid in the absorption tower to circularly flow between the top and the bottom of the absorption tower through a pump; separating the chlorine gas from the hydrogen chloride by dissolving the chlorine gas through the carbon tetrachloride liquid; discharging the separated hydrogen chloride from the absorption tower, and absorbing the hydrogen chloride through a hydrogen chloride absorber; and pumping part of carbon tetrachloride liquid with dissolved chlorine gas into a heating device for heating so as to evaporate the chlorine gas dissolved in the carbon tetrachloride liquid. The method disclosed by the invention can be used for effectively separating the chlorine gas from the hydrogen chloride in a trifluoroacetic acid production process.
Description
Technical field
The present invention relates to trifluoroacetic acid produce in the separation method of chlorine and hydrogen chloride.
Background technology
The chlorine and the hydrogen chloride that in trifluoroacetic acid production process, produce need extraction and application.
Summary of the invention
The object of the present invention is to provide a kind of trifluoroacetic acid produce in the separation method of chlorine and hydrogen chloride, it can be effectively separated with hydrogen chloride to chlorine in trifluoroacetic acid production process.
For achieving the above object, technical scheme of the present invention is the separation method of chlorine and hydrogen chloride during a kind of trifluoroacetic acid of design is produced, and comprises the steps:
The mist of chlorine and hydrogen chloride is introduced and be take in the absorption tower that carbon tetrachloride liquid is absorbent;
Carbon tetrachloride liquid in absorption tower circulates between at the bottom of absorption tower tower top and tower by pump;
By carbon tetrachloride liquid, dissolve chlorine with by chlorine and HCl separation;
Isolated hydrogen chloride is discharged from absorption tower, by hydrogen chloride absorption device, absorbs;
By pump, the carbon tetrachloride liquid that has been partly dissolved chlorine is pumped into heater and heat, make to be dissolved in the chlorine evaporation in carbon tetrachloride liquid.
Advantage of the present invention and beneficial effect are: provide a kind of trifluoroacetic acid produce in the separation method of chlorine and hydrogen chloride, it can be effectively separated with hydrogen chloride to chlorine in trifluoroacetic acid production process.
The specific embodiment
Below in conjunction with embodiment, the specific embodiment of the present invention is further described.Following examples are only for technical scheme of the present invention is more clearly described, and can not limit the scope of the invention with this.
The concrete technical scheme of implementing of the present invention is:
In trifluoroacetic acid production, a separation method for chlorine and hydrogen chloride, comprises the steps:
The mist of chlorine and hydrogen chloride is introduced and be take in the absorption tower that carbon tetrachloride liquid is absorbent;
Carbon tetrachloride liquid in absorption tower circulates between at the bottom of absorption tower tower top and tower by pump;
By carbon tetrachloride liquid, dissolve chlorine with by chlorine and HCl separation;
Isolated hydrogen chloride is discharged from absorption tower, by hydrogen chloride absorption device, absorbs;
By pump, the carbon tetrachloride liquid that has been partly dissolved chlorine is pumped into heater and heat, make to be dissolved in the chlorine evaporation in carbon tetrachloride liquid.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (1)
1. the separation method of chlorine and hydrogen chloride in trifluoroacetic acid production, is characterized in that, comprises the steps:
The mist of chlorine and hydrogen chloride is introduced and be take in the absorption tower that carbon tetrachloride liquid is absorbent;
Carbon tetrachloride liquid in absorption tower circulates between at the bottom of absorption tower tower top and tower by pump;
By carbon tetrachloride liquid, dissolve chlorine with by chlorine and HCl separation;
Isolated hydrogen chloride is discharged from absorption tower, by hydrogen chloride absorption device, absorbs;
By pump, the carbon tetrachloride liquid that has been partly dissolved chlorine is pumped into heater and heat, make to be dissolved in the chlorine evaporation in carbon tetrachloride liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310693771.9A CN103691256A (en) | 2013-12-18 | 2013-12-18 | Method for separating chlorine gas from hydrogen chloride in trifluoroacetic acid production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310693771.9A CN103691256A (en) | 2013-12-18 | 2013-12-18 | Method for separating chlorine gas from hydrogen chloride in trifluoroacetic acid production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103691256A true CN103691256A (en) | 2014-04-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310693771.9A Pending CN103691256A (en) | 2013-12-18 | 2013-12-18 | Method for separating chlorine gas from hydrogen chloride in trifluoroacetic acid production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103691256A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104311383A (en) * | 2014-10-15 | 2015-01-28 | 山东东岳氟硅材料有限公司 | Method for producing methane chloride through byproduct hydrogen chloride in production process of tetrachloroethylene |
| CN105363318A (en) * | 2015-10-20 | 2016-03-02 | 安徽广信农化股份有限公司 | Diuron intermediate body production tail gas processing technology |
| CN108726483A (en) * | 2018-08-10 | 2018-11-02 | 重庆天原化工有限公司 | The processing method of tail gas recycle containing chlorine |
-
2013
- 2013-12-18 CN CN201310693771.9A patent/CN103691256A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104311383A (en) * | 2014-10-15 | 2015-01-28 | 山东东岳氟硅材料有限公司 | Method for producing methane chloride through byproduct hydrogen chloride in production process of tetrachloroethylene |
| CN104311383B (en) * | 2014-10-15 | 2016-05-04 | 山东东岳氟硅材料有限公司 | A kind of method of the hydrogen chloride production monochloro methane that utilizes by-product in tetrachloro-ethylene production process |
| CN105363318A (en) * | 2015-10-20 | 2016-03-02 | 安徽广信农化股份有限公司 | Diuron intermediate body production tail gas processing technology |
| CN108726483A (en) * | 2018-08-10 | 2018-11-02 | 重庆天原化工有限公司 | The processing method of tail gas recycle containing chlorine |
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| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140402 |