Two-step process for upgrading fluid coke

Claim 1

AN IMPROVED METHOD OF TREATING SULFUR-CONTAINING FLUID COKE WHICH COMPRISES THE STEPS OF: MAINTAINING FLUID COKE PARTICLES IN THE FORM OF A FLUIDIZED BED IN A CALCINING ZONE, APPLYING AN ELECTRICAL VOLTAGE ACROSS AT LEAST A PORTION OF SAID BED, SAID VOLTAGE BEING OF SUFFICIENT MAGNITUDE TO MAINTAIN THE TEMPERATURE OF SAID FLUIDIZED BED IN THE RANGE OF 1300 TO 1900*F. DUE TO THE HEAT GENERATED BY THE ELECTRICAL RESISTANCE OF SAID FLUID COKE PARTICLES, A HOT GASIFORM STREAM OF VOLATILES INCLUDING HYDROGEN THUS BEING LIBERATED IN SAID CALCINING ZONE, ESTABLISHING A BED OF FLUID COKE PARTICLES IN A SEPARATE TREATING ZONE UNDER A PRESSURE BETWEEN ABOUT 50 AND 250 P.S.I.G., PASSING SAID HOT GASIFORM STREAM LIBERATED IN SAID CALCINING ZONE UPWARDLY THROUGH SAID TREATING ZONE, THUS MAINTAINING THE PARTICLES THEREIN IN THE FORM OF A FLUIDIZED BED AT A TEMPERATURE OF ABOUT 1300 TO 1500*F., THE HYDROGEN IN SAID GASIFORM STREAM SERVING TO HYDRODESULFURIZE SAID FLUID COKE PARTICLES IN SAID TREATING ZONE.