GB566028A - Improvements relating to the separation and recovery of secondary olefins - Google Patents
Improvements relating to the separation and recovery of secondary olefinsInfo
- Publication number
- GB566028A GB566028A GB2153/43A GB215343A GB566028A GB 566028 A GB566028 A GB 566028A GB 2153/43 A GB2153/43 A GB 2153/43A GB 215343 A GB215343 A GB 215343A GB 566028 A GB566028 A GB 566028A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- olefin
- extract
- mol
- per cent
- 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
- C07C7/00—Purification; Separation; Use of additives
- C07C7/148—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound
- C07C7/17—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound with acids or sulfur oxides
- C07C7/171—Sulfuric acid or oleum
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Water Supply & Treatment (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Secondary olefins such as propene and normal butene and amylene are separated from hydrocarbon mixtures by contacting with sulphuric acid of about 70-90, preferably 83 per cent concentration, and treating the acid extract with a gaseous or liquid paraffin such as propane, pentane or hexane having a boiling point at least 20 DEG C. different from that of the secondary olefin. The olefin is then recovered from the paraffin by fractionation. An extract of normal butene in 83 per cent acid containing 1 mol. of olefin per mol. of acid may be passed down a tower in countercurrent to propane gas at 30 DEG C. and normal pressure. The exit gas contains 25 per cent normal butene which is separated from the propane by fractionation. The extract leaving the base of the tower contains 0.2 mol. of olefin per mol. of acid and is recycled to the acid absorption stage. Alternatively, extraction may be effected with liquid pentane, the extract containing about 10 per cent normal butene. The extraction or stripping operation is effected at temperatures below that at which substantial polymerization of olefin occurs, generally at 0-60 DEG C.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US566028XA | 1942-02-14 | 1942-02-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB566028A true GB566028A (en) | 1944-12-11 |
Family
ID=22005505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2153/43A Expired GB566028A (en) | 1942-02-14 | 1943-02-09 | Improvements relating to the separation and recovery of secondary olefins |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB566028A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1148998B (en) * | 1957-12-10 | 1963-05-22 | Sinclair Refining Co | Process for the production of 2-methyl-butene- (1) and / or 2-methylbutene- (2) |
-
1943
- 1943-02-09 GB GB2153/43A patent/GB566028A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1148998B (en) * | 1957-12-10 | 1963-05-22 | Sinclair Refining Co | Process for the production of 2-methyl-butene- (1) and / or 2-methylbutene- (2) |
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