GB295641A - - Google Patents
Info
- Publication number
- GB295641A GB295641A GB23573/28A GB2357328A GB295641A GB 295641 A GB295641 A GB 295641A GB 23573/28 A GB23573/28 A GB 23573/28A GB 2357328 A GB2357328 A GB 2357328A GB 295641 A GB295641 A GB 295641A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acetic acid
- esters
- column
- effected
- extraction
- Prior art date
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/48—Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment
Abstract
295,641. Suida, H. Aug. 15, 1927. [Convention date]. Acetic acid.-The extraction of acetic acid from its aqueous solutions is effected in the liquid phase bv means of esters of monovalent or polyvalent alcohols with monobasic or polybasic cyclic acids, which esters have boiling points above 150‹ C., and the extracted acid is separated from the solvent by distillation. The process may be effected at a raised temperature so that some part of the extraction is effected in the vapour phase. In an example a 12 per cent acetic acid solution is caused to rise in an extraction column containing filling material, and dibutyl phthalate is caused to descend from the top. In another example preheated 25 per cent acetic acid is supplied at the top of a column upon which is mounted a rectifying column. Diethyl phthalate is supplied at the top of the rectifying column, and the bottom of the lower column is heated so as partly to vaporize the acetic acid. Other solvents mentioned are dimethyl dihexyl phthalates, esters of the naphthene acids, and high-boiling esters of henzaic acid. Specifications 218,271, 218,272, and 296,172 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE295641T | 1927-08-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB295641A true GB295641A (en) | 1929-10-31 |
Family
ID=31894117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23573/28A Expired GB295641A (en) | 1927-08-15 | 1928-08-15 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB295641A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2321626A1 (en) * | 2008-09-03 | 2011-05-18 | Arkema, Inc. | Method of recovering carboxylic acids from dilute aqueous streams |
-
1928
- 1928-08-15 GB GB23573/28A patent/GB295641A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2321626A1 (en) * | 2008-09-03 | 2011-05-18 | Arkema, Inc. | Method of recovering carboxylic acids from dilute aqueous streams |
| EP2321626A4 (en) * | 2008-09-03 | 2012-07-25 | Arkema Inc | Method of recovering carboxylic acids from dilute aqueous streams |
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