GB416404A - Improvements in the recovery of carbon disulphide and methyl alcohol from aqueous solutions obtained in the purification of benzole with methyl alcohol and caustic alkali - Google Patents
Improvements in the recovery of carbon disulphide and methyl alcohol from aqueous solutions obtained in the purification of benzole with methyl alcohol and caustic alkaliInfo
- Publication number
- GB416404A GB416404A GB20760/34A GB2076034A GB416404A GB 416404 A GB416404 A GB 416404A GB 20760/34 A GB20760/34 A GB 20760/34A GB 2076034 A GB2076034 A GB 2076034A GB 416404 A GB416404 A GB 416404A
- Authority
- GB
- United Kingdom
- Prior art keywords
- methyl alcohol
- carbon bisulphide
- benzole
- aqueous liquid
- still
- 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
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/70—Compounds containing carbon and sulfur, e.g. thiophosgene
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
In purifying benzole by treatment with a solution of caustic soda or potash in methyl alcohol or with methyl alcohol and solid alkali, separation of the treating agents from the benzole is effected by adding water in quantity not more than the volume of methyl alcohol and the aqueous liquid is treated to separate methyl alcohol and carbon bisulphide. The aqueous liquid is neutralized with dilute mineral acid preferably by pouring it into the acid or with sulphur dioxide, and is passed into a still fitted with a column. The first runnings consisting of a constant boiling mixture of carbon bisulphide and methyl alcohol boiling at about 36--37 DEG C. are collected under water. Carbon bisulphide forms a lower layer and the upper layer of aqueous methyl alcohol is returned to the still. The receiver is changed at about 60 DEG C. when all the carbon bisulphide has distilled, and concentrated methyl alcohol distils over. The carbon bisulphide is purified by washing with dilute alkali, water, and dilute sulphuric acid.ALSO:In purifying benzole by treatment with a solution of caustic soda or potash in methyl alcohol, separation of the treating agents from the benzole is effected by adding water in amount not more than the methyl alcohol, and the aqueous liquid is treated to separate carbon bisulphide and methyl alcohol. The aqueous liquid is neutralized with dilute mineral acid preferably by pouring it into the acid, or with sulphur dioxide and is passed into a still fitted with a column. The first runnings consisting of a constant boiling mixture of carbon bisulphide and methyl alcohol boiling at about 36--37 DEG C. is collected under water. Carbon bisulphide forms a lower layer and the upper layer of aqueous methyl alcohol is returned to the still. The receiver is changed at about 60 DEG C. to receive concentrated methylalcohol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB20760/34A GB416404A (en) | 1933-03-06 | 1933-03-06 | Improvements in the recovery of carbon disulphide and methyl alcohol from aqueous solutions obtained in the purification of benzole with methyl alcohol and caustic alkali |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB20760/34A GB416404A (en) | 1933-03-06 | 1933-03-06 | Improvements in the recovery of carbon disulphide and methyl alcohol from aqueous solutions obtained in the purification of benzole with methyl alcohol and caustic alkali |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB416404A true GB416404A (en) | 1934-09-06 |
Family
ID=10151194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20760/34A Expired GB416404A (en) | 1933-03-06 | 1933-03-06 | Improvements in the recovery of carbon disulphide and methyl alcohol from aqueous solutions obtained in the purification of benzole with methyl alcohol and caustic alkali |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB416404A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113336227A (en) * | 2021-05-31 | 2021-09-03 | 成都市科隆化学品有限公司 | Benzene-free carbon disulfide and preparation method thereof |
-
1933
- 1933-03-06 GB GB20760/34A patent/GB416404A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113336227A (en) * | 2021-05-31 | 2021-09-03 | 成都市科隆化学品有限公司 | Benzene-free carbon disulfide and preparation method thereof |
| CN113336227B (en) * | 2021-05-31 | 2022-09-27 | 成都市科隆化学品有限公司 | Benzene-free carbon disulfide and preparation method thereof |
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