GB495231A - Improvements in the recovery of alcohols - Google Patents
Improvements in the recovery of alcoholsInfo
- Publication number
- GB495231A GB495231A GB29566/37A GB2956637A GB495231A GB 495231 A GB495231 A GB 495231A GB 29566/37 A GB29566/37 A GB 29566/37A GB 2956637 A GB2956637 A GB 2956637A GB 495231 A GB495231 A GB 495231A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- olefine
- scrubber
- gases
- alcohol
- 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
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/03—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by addition of hydroxy groups to unsaturated carbon-to-carbon bonds, e.g. with the aid of H2O2
- C07C29/04—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by addition of hydroxy groups to unsaturated carbon-to-carbon bonds, e.g. with the aid of H2O2 by hydration of carbon-to-carbon double bonds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Alcohols are recovered from gaseous products under high pressure and temperature containing alcohol vapour, in particular the gaseous products of the hydration of olefines, by scrubbing the gases with liquid water which is substantially <PICT:0495231/III/1> under the same conditions of temperature and pressure. Water replaces the alcohol in the gas and is used for hydrating further quantities of olefine, while the aqueous alcohol is run off and distilled. The pressures specified are atmospheric to 3,000 pounds per square inch or more, and the temperatures 175 to 375 DEG C. The usual catalysts are used for hydrating the olefines. The ratio of steam to olefine can vary within wide limits and the olefine may contain ethane, propane or other gases inert to the reaction. In the apparatus shown the olefine-containing gas enters at 10, is mixed with gases from the converter 19, and passes to the scrubber 13, where it is treated with preheated water from 14. The gases, free from alcohol and saturated with water vapour, pass through the superheater 17, and hence to the converter where hydration of the olefine takes place, the products being returned to the scrubber by a gas circulator 21. The aqueous alcohol passes from the scrubber to the still 25, via a heat exchanger 22, where it is cooled by heat exchange with water for the scrubber. The still may be heated by live steam and the water remaining in the still passed by means of pump 32, through the heat exchanger and a water heater 34, into the scrubber. Only aliphatic alcohols, which are stable and at least partially miscible with water at the high temperatures and pressures used, can be treated by the process. Ethylene and propylene are specified olefines.ALSO:Alcohols are recovered from gaseous products under high pressure and temperature, containing alcohol vapour, in particular the gaseous products of the hydration of olefines, by scrubbing the gases with liquid water <PICT:0495231/IV/1> which is substantially under the same conditions of temperature and pressure. Water replaces the alcohol in the gas and is used for hydrating further quantities of olefine, while the aqueous alcohol is run off and distilled. The pressures specified are atmospheric to 3,000 pounds per square inch or more, and the temperatures 175 to 375 DEG C. The usual catalysts are used for hydrating the olefines. The ratio of steam to olefine can vary within wide limits, and the olefine may contain ethane, propane or other gases inert to the reaction. In the apparatus shown the olefine-containing gas enters at 10, is mixed with gases from the converter 19, and passes to the scrubber 13, where it is treated with preheated water from 14. The gases, free from alcohol and saturated with water vapour, pass through the superheater 17, and hence to the converter where hydration of the olefine takes place, the products being returned to the scrubber by a gas circulator 21. The aqueous alcohol passes from the scrubber to the still 25, via a heat exchanger 22, where it is cooled by heat exchange with water for the scrubber. The still may be heated by live steam and the water remaining in the still passed by means of a pump 32, through the heat exchanger and a water heater 34, into the scrubber. Only aliphatic alcohols, which are stable and at least partially miscible with water at the high temperatures and pressures used, can be treated by the process. Ethylene and propylene are specified olefines.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US495231XA | 1936-11-25 | 1936-11-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB495231A true GB495231A (en) | 1938-11-09 |
Family
ID=21960271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29566/37A Expired GB495231A (en) | 1936-11-25 | 1937-10-29 | Improvements in the recovery of alcohols |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB495231A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864651A (en) * | 2021-11-03 | 2021-12-31 | 中煤陕西榆林能源化工有限公司 | Reverse recovery system and method for separating methanol from olefin |
-
1937
- 1937-10-29 GB GB29566/37A patent/GB495231A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864651A (en) * | 2021-11-03 | 2021-12-31 | 中煤陕西榆林能源化工有限公司 | Reverse recovery system and method for separating methanol from olefin |
| CN113864651B (en) * | 2021-11-03 | 2024-02-20 | 中煤陕西能源化工集团有限公司 | Reverse recovery system and method for olefin separation methanol |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2579601A (en) | Olefin hydration process | |
| ES366658A1 (en) | Process for the production of a methane-containing gas | |
| US2823236A (en) | Manufacture of alkanolamines | |
| NO137823B (en) | PROCEDURES FOR PREPARING AS ISOPROPYL ALCOHOL AS A FUEL ADDITION | |
| GB403402A (en) | Improvements in or relating to the production of aliphatic ethers | |
| Barr et al. | Reactions of Polyfluoro Olefins. III. 1 Preparation of Polyfluoro Ethers2 | |
| GB495231A (en) | Improvements in the recovery of alcohols | |
| US2012785A (en) | Process for the preparation of substantially pure tertiary olefines | |
| US2142036A (en) | Hydration of olefines | |
| US2105508A (en) | Manufacture of isopropyl ether | |
| US2130669A (en) | Process for producing valuable products from hydrocarbon gases | |
| US2079652A (en) | Manufacture of esters from olefines | |
| US2020673A (en) | Production of oxygen-containing addition products of ethylene | |
| US2093426A (en) | Direct hydration of olefines | |
| US2819319A (en) | Production of alcohols by hydrolysis of alkyl bromides | |
| US1988481A (en) | Preparation of ketones | |
| US1986082A (en) | Production of ethylene oxide | |
| US3988379A (en) | Manufacture of cyclohexanol from cyclohexene | |
| US2044417A (en) | Production of alcohols | |
| US2020674A (en) | Manufacture of hydration products of olefines | |
| GB378865A (en) | Improvements in or relating to the production of alcohols from olefines | |
| US1961987A (en) | Production of ethers | |
| US2324054A (en) | Process of recovering ethers | |
| US2007754A (en) | Production of hydrocarbons | |
| SU138603A1 (en) | The method of obtaining tertiary alcohols |