Production of gasoline from light olefins in a fluidized catalyst reactor system
US5034565A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1988 |
| Grant date | Jul 23, 1991 |
| Priority date | — |
| Expiry date | Sep 26, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G69/126
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A improved process is provided for upgrading light olefins from hydrocarbon cracking, such as light crackate gas containing ethene, propene and other C.sub.1 -C.sub.4 lower aliphatics. The process comprises the steps of: maintaining an oligomerization reactor containing a fluidized bed of zeolite catalyst particles in a low severity reactor bed at oligomerization temperature conditions by passing hot olefinic gas upwardly through the fluidized catalyst bed under throughput rate conditions sufficient to convert at least 50 wt % of lower olefins to hydrocarbons in the C.sub.5 -C.sub.10 range; maintaining turbulent fluidized bed conditions through the fluidized bed by passing fresh ethene-rich feedstream gas upwardly through the fluidized catalyst bed and adding thereto sufficient recycled light byproduct gas to maintain a minimum gas velocity; cooling reaction effluent from the conversion zone to provide light gas byproduct and liquid hydrocarbon reaction product rich in C.sub.5 -C.sub.9 hydrocarbons; and recycling sufficient light byproduct gas recovered from effluent or maintaining turbulent regime gas velocity in the fluidized bed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.