Multistage conversion of lower olefins with interreactor quenching
US4740645A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 1986 |
| Grant date | Apr 26, 1988 |
| Priority date | — |
| Expiry date | Sep 5, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/52
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A continuous multi-stage catalytic process for converting ethene-rich lower olefinic feedstock to heavier liquid hydrocarbon product, comprising the steps of PA0 contacting ethene-rich feedstock at elevated temperature and moderate pressure in a primary stage reaction zone with a first catalyst comprising shape selective medium pore zeolite to convert at least a portion of the lower olefinic components to intermediate olefinic hydrocarbons; PA0 cooling primary stage reaction effluent by introducing a stream of cold water sufficient to reduce the primary stage effluent to second stage reaction temperature; and PA0 contacting unreacted ethene and at least a portion of the intermediate olefinic hydrocarbons from the primary stage with nickel-containing shape selective medium pore zeolite oligomerization component at elevated temperature to provide a heavier hydrocarbon effluent stream comprising gasoline and/or distillate range hydrocarbons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.