Multiple-stage hydrocarbon conversion with gravity- flowing...

Details Multiple-stage hydrocarbon conversion with gravity- flowing... Multiple-stage hydrocarbon conversion with gravity- flowing...

C - Chemistry, Metallurgy

10

G

196/147, 196/186

C10G 35/12 (2006.01) B01J 8/12 (2006.01)

Patent

CA 1104965

MULTIPLE-STAGE HYDROCARBON CONVERSION WITH GRAVITY-FLOWING CATALYST PARTICLES ABSTRACT A multiple-stage catalytic conversion system in which a hydrocarbonaceous charge stock and hydrogen flow serially through a plurality of catalytic reaction zones, in each of which the catalyst particles are downwardly movable via gravity-flow. At least three reaction zones are utilized, with the fresh feed and hydrogen reactant stream being split between the first and second. The flow of that portion introduced into the second zone is restricted. Effluent flow from the first reaction zone is also restricted and combined with the effluent from the second reaction zone; the mixture is introduced into a third reaction zone. Where the catalytic conversion system consists of four reaction zones, the flow of efflu- ent from the third is restricted prior to the introduc- tion thereof into the fourth reaction zone.

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