GB218271A - Improvements in or relating to the manufacture of concentrated acetic acid from diluted acetic acid - Google Patents
Improvements in or relating to the manufacture of concentrated acetic acid from diluted acetic acidInfo
- Publication number
- GB218271A GB218271A GB14281/24A GB1428124A GB218271A GB 218271 A GB218271 A GB 218271A GB 14281/24 A GB14281/24 A GB 14281/24A GB 1428124 A GB1428124 A GB 1428124A GB 218271 A GB218271 A GB 218271A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acetic acid
- extraction
- acid
- cresol
- hydrogenated
- 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
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
Dilute acetic acid, such as fermentation acid, crude pyroligneous acid, or the by-product from acetylation processes is concentrated by extraction with a solvent insoluble or nearly insoluble in water and with a considerably higher boiling point p than acetic acid. The extraction is preferably carried out counter-current-wise in an extraction column and the extract is distilled, the first fraction consisting of comparatively dilute acetic acid which is returned to the process and the major portion of the distillate being acetic acid of 70-80 per cent strength suitable for direct conversion into glacial acetic acid. Suitable solvents are organic liquids containing oxygen and of boiling-point higher than 150 DEG C., such as cresols and their homologues, aliphatic ketones or fatty-acids, or mixtures of these bodies, and heavy wood tar oils, and the process is exemplified by the use of crude cresol, beech wood tar oil and anthracene oil. The Specification as open to inspection under Sect. 91 (3) (a) refers also to the use as solvents of polyvalent phenols and their ethers such as guaiacol, hydrogenated phenols such as hexahydrocresols, cyclic ketones, and brown and black coal tars and gives an example using hydrogenated tar cresol. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT218271X | 1923-06-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB218271A true GB218271A (en) | 1925-09-10 |
Family
ID=3669795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14281/24A Expired GB218271A (en) | 1923-06-26 | 1924-06-12 | Improvements in or relating to the manufacture of concentrated acetic acid from diluted acetic acid |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB218271A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116606204A (en) * | 2023-07-17 | 2023-08-18 | 成都普什医药塑料包装有限公司 | Recovered acetic acid for low-chroma acetic anhydride and cellulose acetate, and recovery method and application thereof |
-
1924
- 1924-06-12 GB GB14281/24A patent/GB218271A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116606204A (en) * | 2023-07-17 | 2023-08-18 | 成都普什医药塑料包装有限公司 | Recovered acetic acid for low-chroma acetic anhydride and cellulose acetate, and recovery method and application thereof |
| CN116606204B (en) * | 2023-07-17 | 2023-10-20 | 成都普什医药塑料包装有限公司 | Recovered acetic acid for low-chroma acetic anhydride and cellulose acetate, and recovery method and application thereof |
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