CN102503802A - Acetic acid extracting agent - Google Patents
Acetic acid extracting agent Download PDFInfo
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- CN102503802A CN102503802A CN2011103445893A CN201110344589A CN102503802A CN 102503802 A CN102503802 A CN 102503802A CN 2011103445893 A CN2011103445893 A CN 2011103445893A CN 201110344589 A CN201110344589 A CN 201110344589A CN 102503802 A CN102503802 A CN 102503802A
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- acetic acid
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- hexane
- extracting agent
- extraction agent
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Abstract
The invention discloses an acetic acid extracting agent, which comprises the following components in percentage by mass: 66-75 percent of isopropyl acetate, 14-23 percent of ethyl methyl ketone, 8-12 percent of hexane and the balance of impurities, and preferably comprises the following components in percentage by mass: 70.0 percent of isopropyl acetate, 16.5 percent of ethyl methyl ketone, 9.0 percent of hexane and the balance of impurities. The acetic acid extracting agent has the advantages of convenience for preparing, simple process, use safety, low unit consumption and purity of extracted and rectified acetic acid of not less than 99.5 percent.
Description
Technical field:
The present invention relates to a kind of acetic acid extraction agent.
Background technology:
At present, acetic acid is widespread use in chemical industry, and the general methods such as extraction, rectifying that adopt reclaim acetic acid.The method of Separation and Recovery acetic acid is a lot of from the aqueous solution, and the selection of separation method will be considered with the combined factors such as size of the water yield according to the height of acetate concentration.In general, for the acetum of lower concentration, be that the extraction process of solvent is suitable separation method with amine; And, then should select low boiling point solvent to the higher acetum of concentration, adopt extraction-azeotropic distillation integrated process to come Separation and Recovery acetic acid.
There is the contradiction of band outlet capacity, partition ratio and the threshold concentration (extraction phase acetic acid maximum concentration) of selection of Extractant property and entrainer in this method.Extraction agent is in the early time selected methylethylketone, benzene for use, change Iso Butyl Acetate, methylethylketone, hexane into after, can stop using benzene (carcinogenic substance), improve extraction efficiency, reduce the steam consumption of rectification process.
Summary of the invention:
The objective of the invention is in order to overcome above deficiency, the acetic acid extraction agent that a kind of easy to make, technology is simple, dna purity is higher is provided.
The object of the invention is realized through following technical scheme: a kind of acetic acid extraction agent is characterized in that said extraction agent comprises by mass percentage: Iso Butyl Acetate: 66%-75%, methylethylketone: 14%-23%, hexane: 8%-12%; Said extraction agent comprises by mass percentage: Iso Butyl Acetate: 70.0%, and methylethylketone: 16.5%, hexane is: 9.0%, all the other are impurity.
The present invention compared with prior art has the following advantages: easy to make, technology is simple, improve extraction efficiency, and reduce the steam consumption of rectification process, be not less than 99.5% advantage through the acetic acid purity after extraction, the rectifying.
Embodiment:
In order to deepen to understanding of the present invention, will combine instance that the present invention is made further detailed description below, this embodiment only is used to explain the present invention, does not constitute the qualification to protection domain of the present invention.
A kind of embodiment of a kind of acetic acid extraction agent of the present invention: said extraction agent comprises by mass percentage: Iso Butyl Acetate: 66%-75%, and methylethylketone: 14%-23%, hexane: 8%-12%, all the other are impurity; The mass percent of its optimum proportion is: Iso Butyl Acetate: 70.0%, and methylethylketone: 16.5%, hexane is: 9.0%, all the other are impurity.
Get an amount of Iso Butyl Acetate, methylethylketone, hexane directly mixes three kinds of solvents and stirs getting final product, and wherein Iso Butyl Acetate is main extraction agent; And methylethylketone can increase the solubleness of mixed solvent Dichlorodiphenyl Acetate, can soften vinegar sheet particle; The adding of hexane can reduce the solubleness of water in the solvent phase, and the solubleness of aqueous phase solvent.
The present invention is easy to make, technology is simple, and extraction agent is in the early time selected methylethylketone, benzene for use, change Iso Butyl Acetate, methylethylketone, hexane into after, can stop using benzene, benzene belongs to carcinogenic substance, can damage human body; Can also improve extraction efficiency, reduce the steam consumption of rectification process; For the degradation production Virahol of Iso Butyl Acetate, acetic acid, Virahol can on-line continuous reclaim, and is converted into Iso Butyl Acetate, and the unit consumption of main extraction agent Iso Butyl Acetate is reduced greatly, and degradation production acetic acid then gets into acetate system.
Claims (2)
1. an acetic acid extraction agent is characterized in that, said extraction agent comprises by mass percentage:
Iso Butyl Acetate: 66%-75%;
Methylethylketone: 14%-23%;
Hexane: 8%-12%;
All the other are impurity.
2. according to the said a kind of acetic acid extraction agent of claim 1, it is characterized in that: said extraction agent comprises by mass percentage:
Iso Butyl Acetate: 70.0%;
Methylethylketone: 16.5%;
Hexane is: 9.0%;
All the other are impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103445893A CN102503802A (en) | 2011-11-04 | 2011-11-04 | Acetic acid extracting agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103445893A CN102503802A (en) | 2011-11-04 | 2011-11-04 | Acetic acid extracting agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102503802A true CN102503802A (en) | 2012-06-20 |
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ID=46215953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103445893A Pending CN102503802A (en) | 2011-11-04 | 2011-11-04 | Acetic acid extracting agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102503802A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106542990A (en) * | 2016-10-13 | 2017-03-29 | 中石化南京工程有限公司 | A kind of method and system of the recovery of acetic acid from aqueous acetic acid |
| CN109020806A (en) * | 2018-10-31 | 2018-12-18 | 天津中福环保科技股份有限公司 | A kind of recycling purification acetic acid extraction-entrainer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1345358A (en) * | 1999-03-18 | 2002-04-17 | 国际涂料有限公司 | Primer coating of steel |
| CN1359365A (en) * | 1999-07-22 | 2002-07-17 | 电化学工业有限公司（国际） | Method for the separation and purification of an aqueous mixture consisting of the main components acetic acid and formic acid |
-
2011
- 2011-11-04 CN CN2011103445893A patent/CN102503802A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1345358A (en) * | 1999-03-18 | 2002-04-17 | 国际涂料有限公司 | Primer coating of steel |
| CN1359365A (en) * | 1999-07-22 | 2002-07-17 | 电化学工业有限公司（国际） | Method for the separation and purification of an aqueous mixture consisting of the main components acetic acid and formic acid |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106542990A (en) * | 2016-10-13 | 2017-03-29 | 中石化南京工程有限公司 | A kind of method and system of the recovery of acetic acid from aqueous acetic acid |
| CN109020806A (en) * | 2018-10-31 | 2018-12-18 | 天津中福环保科技股份有限公司 | A kind of recycling purification acetic acid extraction-entrainer |
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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: 20120620 |