Fluidized catalyst process for conversion of hydrocarbons

Claim 1

IN THE FLUID CATALYST PROCESS FOR THE CONVERSION OF HYDROCARBONS WHEREIN DENSE PHASE BODIES OF FLUIDIZED CATALYST ARE MAINTAINED IN A REACTION ZONE AD IN A REGENERATING ZONE, RESPECTIVELY, THE CATALYST IS CONTINUOUSLY REGENERATED IN THE REGENERATING ZONE BY CONTACT WITH AIR UNDER CONDITIONS ADAPTED TO AVOID EXCESSIVE RISE IN TEMPERATURE, REGENERATED CATALYST IS WITHDRAWN FROM THE BODY OF CATALYST IN THE REGENERATING ZONE AND PASSED TO THE REACTION ZONE, CATALYST IS CONTINUOUSLY WITHDRAWN FROM THE BODY OF CATALYST IN THE REACTION ZONE, STRIPPED OF OIL IN A STRIPPING ZONE BY CONTACT WITH A STRIPPING MEDIUM AND RETURNED TO THE BODY OF CATALYST IN THE REGENERATING ZONE, THE IMPROVEMENT WHICH COMPRISES REGENERATING THE CATALYST BY PASSING IT DOWNWARDLY THROUGH THE REGENARATING ZONE WHILE PASSING AIR UPWARDLY THROUGH THE REGENERATING ZONE IN CONTACT WITH THE