Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – By addition of entire unsaturated molecules – e.g.,...
Patent
1988-09-26
1991-07-23
Pal, Asok
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
By addition of entire unsaturated molecules, e.g.,...
585415, 585519, 585722, 585734, C07C 212
Patent
active
050345656
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.
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Harandi Mohsen N.
Owen Hartley
Tabak Samuel A.
McKillop Alexander J.
Mobil Oil Corporation
Pal Asok
Speciale Charles J.
Wise L. G.
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