GB571661A - Dehydration of acetone - Google Patents
Dehydration of acetoneInfo
- Publication number
- GB571661A GB571661A GB7401/43A GB740143A GB571661A GB 571661 A GB571661 A GB 571661A GB 7401/43 A GB7401/43 A GB 7401/43A GB 740143 A GB740143 A GB 740143A GB 571661 A GB571661 A GB 571661A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acetone
- water
- per cent
- mixture
- column
- 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
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/78—Separation; Purification; Stabilisation; Use of additives
- C07C45/81—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
- C07C45/82—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
571,661. Dehydration of acetone. SHELL DEVELOPMENT CO. May 10, 1943, No. 7401. Convention date, May 26, 1942. Drawings to Specification. [Class 32] Anhydrous acetone containing 0.3 per cent. water or less is obtained by submitting an aqueous mixture of acetone to fractional distillation in a fractionating zone maintained at a subatmospheric pressure. The process is preferably carried out on a mixture containing from about 1 to 50 per cent. by weight of water and the fractionating zone is preferably maintained at an absolute pressure between about 200 and 400 m.m. The mixture distilled may or may not contain other components, e.g., isopropyl alcohol. In the example an aqueous acetone mixture containing acetone and water in the weight ratio of about 2 to 1 was continuously distilled in a fractionating column provided with 49 plates. The absolute pressure in the column was about 300 m.m. When the reflux ratio was 1, the acetone product contained about 0.38 per cent. water. Increasing the reflux ratio to 2 resulted in an acetone containing only about 0.14 per cent. water. A still greater increase of the reflux ratio to 3 gave an acetone containing only about 0.04 per cent of water. The same material was distilled in the same apparatus, the pressure in the column being maintained at about 500 m.m. (absolute). Reflux ratios of 2, 3 and 4 resulted in an acetone distillate containing, respectively, 0.32, 0.18 and 0.09 per cent. of water. In each of the foregoing distillations the aqueous acetone mixture was introduced into the column at the fifteenth plate from the bottom.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US571661XA | 1942-05-26 | 1942-05-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB571661A true GB571661A (en) | 1945-09-04 |
Family
ID=22008901
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7401/43A Expired GB571661A (en) | 1942-05-26 | 1943-05-10 | Dehydration of acetone |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB571661A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4722769A (en) * | 1986-04-24 | 1988-02-02 | Allied Corporation | Process for recovery of acetone |
-
1943
- 1943-05-10 GB GB7401/43A patent/GB571661A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4722769A (en) * | 1986-04-24 | 1988-02-02 | Allied Corporation | Process for recovery of acetone |
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