GB470859A - Process and apparatus for extracting organic acids from their dilute aqueous solutions - Google Patents
Process and apparatus for extracting organic acids from their dilute aqueous solutionsInfo
- Publication number
- GB470859A GB470859A GB5760/36A GB576036A GB470859A GB 470859 A GB470859 A GB 470859A GB 5760/36 A GB5760/36 A GB 5760/36A GB 576036 A GB576036 A GB 576036A GB 470859 A GB470859 A GB 470859A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tank
- solvent
- aqueous
- aqueous acid
- organic 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
- 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
<FORM:0470859/IV/1> Lactic, citric, tartaric and butyric acids are concentrated by extraction of the aqueous acid in successive stages with a mixture of 70--90 parts methyl ethyl ketone with 30--10 parts of ether, the aqueous acid and solvent being used in equal volumes in each stage. The aqueous acid is admitted to a tank 1 and after treatment with an equal volume of solvent from a tank B, the aqueous layer is passed to a tank 2 and thence to tanks 3, 4, 5 in each of which it is treated with an equal volume of the same solvent. The extracts are collected in a tank D and pass thence through a vessel E in which any aqueous liquor is separated, and then through a heater F to a still G from which the solvent and about 8 per cent of water pass off by a pipe H and condenser I to the tank B. The exhausted aqueous liquor collects in a tank M and flows through a heater N to a still O, solvent vapour being returned by a pipe P to the condenser I.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE470859X | 1935-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB470859A true GB470859A (en) | 1937-08-24 |
Family
ID=6541191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5760/36A Expired GB470859A (en) | 1935-02-28 | 1936-02-26 | Process and apparatus for extracting organic acids from their dilute aqueous solutions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB470859A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4447643A (en) * | 1981-09-28 | 1984-05-08 | National Distillers And Chemical Corporation | Process for recovering oxygenated organic compounds from dilute aqueous solutions employing liquid extraction media |
-
1936
- 1936-02-26 GB GB5760/36A patent/GB470859A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4447643A (en) * | 1981-09-28 | 1984-05-08 | National Distillers And Chemical Corporation | Process for recovering oxygenated organic compounds from dilute aqueous solutions employing liquid extraction media |
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