FLUID CRACKING PROCESS AND THE METHOD FOR SEPARATING A SUSPENSION DISCHARGED FROM A RISER CRACKING ZONE

摘要

A FLUID CRACKING PROCESS AND THE METHOD FORSEPARATING A SUSPENSION DISCHARGED FROM A RISERCRACKING ZONEABSTRACT OF THE DISCLOSUREA riser cracking-catalyst regeneration operationis described wherein a suspension discharged from theriser cracking operation is separated by catalyst particleconcentrating means which discharge a concentrated streamof catalyst into a downcomer zone and out of furthercontact with discharged hydrocarbons in the suspension.A stripping gas is used to aid the separation of catalystand hydrocarbon vapors.