GB378463A - Improvements relating to the concentration of dilute acetic acid or liquor containing same - Google Patents
Improvements relating to the concentration of dilute acetic acid or liquor containing sameInfo
- Publication number
- GB378463A GB378463A GB1402331A GB1402331A GB378463A GB 378463 A GB378463 A GB 378463A GB 1402331 A GB1402331 A GB 1402331A GB 1402331 A GB1402331 A GB 1402331A GB 378463 A GB378463 A GB 378463A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vinegar
- acetic acid
- solution
- heat exchanger
- concentration
- 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
Dilute acetic acid such as vinegar is concentrated by passing the pre-cooled solution through a heat exchanger at a sufficient speed and rate of heat exchange to cause the formation of ice crystals which are carried along by the liquid stream and separated. The crystals are washed with some of the initial solution and may then be mixed with alcohol, the mixture being used to pre-cool the solution, and afterwards being returned to the vinegar plant so as to supply the alcohol and a part of the water needed for the process while saving the remaining acetic acid. In an example, the concentration of 10 per cent vinegar is effected by passing the solution, pre-cooled to -2 DEG C. through a heat exchanger at 3 feet per second, the heat transfer being 500-1000 calories per square metre of cooling surface per hour. To control or limit the rate of cooling, the cooling surfaces may be coated with material of low conductivity such as rubber or enamel. More than one heat exchanger may be used; for instance the first may cool the liquor to -5 DEG C. and the second to -15 DEG C. giving a vinegar of 40 per cent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1402331A GB378463A (en) | 1931-05-12 | 1931-05-12 | Improvements relating to the concentration of dilute acetic acid or liquor containing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1402331A GB378463A (en) | 1931-05-12 | 1931-05-12 | Improvements relating to the concentration of dilute acetic acid or liquor containing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB378463A true GB378463A (en) | 1932-08-12 |
Family
ID=10033575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1402331A Expired GB378463A (en) | 1931-05-12 | 1931-05-12 | Improvements relating to the concentration of dilute acetic acid or liquor containing same |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB378463A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115355515A (en) * | 2022-09-02 | 2022-11-18 | 生态环境部南京环境科学研究所 | Spray roasting process for waste acid liquor treatment |
-
1931
- 1931-05-12 GB GB1402331A patent/GB378463A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115355515A (en) * | 2022-09-02 | 2022-11-18 | 生态环境部南京环境科学研究所 | Spray roasting process for waste acid liquor treatment |
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