Catalytic cracking of hydrocarbon oil

Claim 1

THE METHOD FOR UTILIZING SILICA-ALUMINA CRACKING CATALYST PARTICLES TO OBTAIN THEREFROM A PROLONGED PERIOD OF ACTIVE USE IN CATALYTIC CRACKING OF HYDROCARBON MATERIAL WHICH COMPRISES: CONTACTING A STATIONARY BED OF SUCH CATALYST PARTICLES WITH HYDROCARBON MATERIAL UNDER CRACKING CONDITIONS; PERIODICALLY REGENERATING IN SITU THE CATALYST PARTICLES BY COMBUSTION OF CARBONACEOUS MATERIALS, THE CONTACTING WITH HYDROCARBON MATERIAL AND THE REGENERATING BEING CONDUCTED IN ALTERNATE CYCLES UNTIL THE PARTICLES HAVE UNDRERGONE PARTIAL PERMANENT DEACTIVATION TO A REDUCED CATALYTIC CRACKING ACTIVITY LEVEL ABOVE WHICH LEVEL THE CATALYTIC CRACKING ACTIVITY OF THE PARTICLES CANNOT BE RESTORED BY SUCH REGENEATING, THE DEACTIVATED PARTICLES HAVING IRON OXIDE POISONS DEPOSITED ON THE SURFACE THEREOF; WITHDRAWING SAID DEACTIVATED PARTICLES FROM USE IN THE STATIONARY BED OPERATION AND TRANSFERRING SAID DEACTIVATED PARTICLES TO A CATALYST CRACKING SYSTEM WHEREIN SILICAALUMINA CRACKING CATALYST PARTICLES MOVE CONTINUOUSLY AS A COMPACT BED THROUGH ZONES OF REACTION AND REGENERATION; AND USING SAID DEACTIVATED PARTICLES TO CRACK HYDROCARBON MATERIAL IN THE CRACKING SYSTEM EMPLOYING THE MOVING COMPACT BED UNTIL SAID DEACTIVATED PARTICLES HAVE UNDERGONE ADDITIONAL PERMANENT DEACTIVATION BEFORE REMOVING THE PARTICLES FROM THE MOVING COMPACT BED SYSTEM.

Claim 2

THE METHOD FOR UTILIZING SILICA-ALUMINA CRACKING CATALYST PARTICLES TO OBTAIN THEREFROM A PROLONGED PERIOD OF ACTIVE USE IN CATALYTIC CRACKING OF HYDROCARBON MATERIAL WHICH COMPRISES: CONTACTING A STATIONARY BED OF SUCH CATALYST PARTICLES WITH HYDROCARBON MATERIAL UNDER CRACKING CONDITIONS; PERIODICALLY REGENERATING IN SITU THE CATALYST PARTICLES BY COMBUSTION OF CARBONACEOUS MATERIALS, THE CONTACTING WITH HYDROCARBON MATERIAL AND THE REGENERATING BEING CONDUCTED IN ALTERNATE CYCLES UNTIL THE PARTICLES HAVE UNDRERGONE PARTIAL PERMANENT DEACTIVATION TO A REDUCED CATALYTIC CRACKING ACTIVITY LEVEL ABOVE WHICH LEVEL THE CATALYTIC CRACKING ACTIVITY OF THE PARTICLES CANNOT BE RESTORED BY SUCH REGENEATING, THE DEACTIVATED PARTICLES HAVING IRON OXIDE POISONS DEPOSITED ON THE SURFACE THEREOF; WITHDRAWING SAID DEACTIVATED PARTICLES FROM USE IN THE STATIONARY BED OPERATION AND TRANSFERRING SAID DEACTIVATED PARTICLES TO A CATALYST CRACKING SYSTEM WHEREIN SILICAALUMINA CRACKING CATALYST PARTICLES MOVE CONTINUOUSLY AS A COMPACT BED THROUGH ZONES OF REACTION AND REGENERATION; AND USING SAID DEACTIVATED PARTICLES TO CRACK HYDROCARBON MATERIAL IN THE CRACKING SYSTEM EMPLOYING THE MOVING COMPACT BED UNTIL SAID DEACTIVATED PARTICLES HAVE UNDERGONE ADDITIONAL PERMANENT DEACTIVATION BEFORE REMOVING THE PARTICLES FROM THE MOVING COMPACT BED SYSTEM.