GB354198A - Improvements in or relating to the concentration of dilute aliphatic acids - Google Patents
Improvements in or relating to the concentration of dilute aliphatic acidsInfo
- Publication number
- GB354198A GB354198A GB1356630A GB1356630A GB354198A GB 354198 A GB354198 A GB 354198A GB 1356630 A GB1356630 A GB 1356630A GB 1356630 A GB1356630 A GB 1356630A GB 354198 A GB354198 A GB 354198A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solvent
- vapour
- acid
- ether
- aliphatic acids
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Acetic, propionic, and other aliphatic acids are extracted from their aqueous solutions by means of solvents comprising at least one ether of a monohydric phenol such as the methyl, ethyl and propyl a -naphthol ethers, the methyl, ethyl, propyl, isopropyl, and paratolyl b -naphthol ethers, the cresyl ether, anisol, phenetol, and phenyl ether. The solvent may be mixed with the aqueous acid and the extract fractionally distilled, or the vapour of the dilute acid may be passed through the solvent at a temperature at which the water remains in the vapour form, for instance in countercurrent in a fractionating column into which the solvent is admitted as a stream or spray, or the vapour of the dilute acid may be mixed with the vapour of the solvent, the mixture being then cooled to condense the acid while leaving the water in vapour form. The solvent is preferably circulated between an absorption and a distillation zone, and the absorption zone may be at ordinary or raised temperature such as 50-90 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1356630A GB354198A (en) | 1930-05-02 | 1930-05-02 | Improvements in or relating to the concentration of dilute aliphatic acids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1356630A GB354198A (en) | 1930-05-02 | 1930-05-02 | Improvements in or relating to the concentration of dilute aliphatic acids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB354198A true GB354198A (en) | 1931-08-04 |
Family
ID=10025268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1356630A Expired GB354198A (en) | 1930-05-02 | 1930-05-02 | Improvements in or relating to the concentration of dilute aliphatic acids |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB354198A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0188775A1 (en) * | 1985-01-11 | 1986-07-30 | Röhm Gmbh | Process for recovering anhydrous methacrylic acid |
-
1930
- 1930-05-02 GB GB1356630A patent/GB354198A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0188775A1 (en) * | 1985-01-11 | 1986-07-30 | Röhm Gmbh | Process for recovering anhydrous methacrylic acid |
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