Countercurrent hydrocarbon conversion with gravity- flowing...

Details Countercurrent hydrocarbon conversion with gravity- flowing... Countercurrent hydrocarbon conversion with gravity- flowing...

C - Chemistry, Metallurgy

10

G

196/115

C10G 35/04 (2006.01)

Patent

CA 1098468

CASE 1782 COUNTERCURRENT HYDROCARBON CONVERSION WITH GRAVITY-FLOWING CATALYST PARTICLES ABSTRACT A multiple-stage catalytic conversion system in which a hydro- carbon charge stock is countercurrently reacted in a plurality of catalytic reaction zones, in all of which the catalyst particles are downwardly movable via gravity-flow, The charge stock, in the absence of added, or recycled hydrogen, is reacted serially in the reaction zones in the order of increasing catalyst loading, the product ultimately being recovered from that reaction zone (1) into which fresh, or regenerated catalyst particles are introduced and, (2) which contains the greatest quantity of catalyst particles. Catalyst particles are transferred from one reaction zone to anotherin the order of decreasing catalyst loading, ultimately being withdrawn from the system through the reaction zone containing the least amount of catalyst particles.

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