Process for upgrading olefinic gasolines by etherification
US4664675A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jun 18, 1985 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | Jun 18, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C41/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention concerns a process for upgrading olefinic gasolines containing C.sub.5 hydrocarbons, but free of C.sub.4 hydrocarbons, by etherification. It is characterized in that the tertiary olefins of the charge are reacted (1 and 2) with methanol; the reaction effluent being then extracted (3) with water, in order to separate an aqueous phase containing the major part of the unreacted methanol from a hydrocarbon phase containing the major part of the formed ethers. The aqueous phase is then introduced in a distillation zone (4) where water is separated from methanol and recycled to the extraction zone (3), whereas methanol is recycled to the etherification zone (1 and 2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.