Catalytic conversion of olefins to heavier hydrocarbons
US4504693A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1984 |
| Grant date | Mar 12, 1985 |
| Priority date | — |
| Expiry date | Jun 1, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2529/40
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A catalytic process for converting an olefinic feedstock comprising lower olefin to heavier hydrocarbon product comprising the steps of: PA1 contacting the feedstock and a recycled hydrocarbon with shape-selective zeolite oligomerization catalyst in catalytic reaction zone at elevated temperature and pressure to provide a heavier hydrocarbon effluent stream comprising heavy, intermediate and light hydrocarbons; PA1 flashing the effluent stream between the reaction zone and a phase separation zone by reducing pressure of the effluent stream, thereby producing a heavy liquid stream rich in heavy hydrocarbons and a flashed effluent vapor stream containing lighter hydrocarbons; PA1 separating and recovering a recycle stream rich in intermediate range hydrocarbons from the separation zone and pressurizing the recycle stream for recycle to the reactor inlet; PA1 further fractionating the heavy liquid stream and flashed effluent vapor from the phase separation zone in first distillation tower to remove light hydrocarbons therefrom; and PA1 recovering substantially all of the heavy hydrocarbons produced in the reaction zone in a fractionated liquid product stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.