Integrated process for converting oxygenates to liquid hydrocarbons
US4628135A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1985 |
| Grant date | Dec 9, 1986 |
| Priority date | — |
| Expiry date | Sep 23, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/40
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Alkylate is produced by catalytically converting oxygenate feedstock, such as methanol, to lower olefins comprising dominantly C.sub.2 -C.sub.4 olefins. Ethene is separated from primary stage effluent by interstage sorption of C.sub.3 + components which may be upgraded. Isoparaffin may be alkylated with C.sub.3 -C.sub.4 olefins in a secondary stage. The improved technique comprises fractionating an olefinic feedstream containing ethene and C.sub.3 + olefinic components by contacting the olefinic feedstream in a sorption zone with a liquid hydrocarbon sorbent to selectively sorb C.sub.3 + components; PA0 wherein the sorbent is obtained by condensing C.sub.5 + aliphatic and aromatic hydrocarbon from the primary stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.