Desulfurization of fluid coke with hydrogen above 2400deg. f.

Claim 1

A PROCESS FOR DESULFURIZING TO A MAXIMUM SULFUR CONTENT OF 3 WEIGHT % AND INCREASING THE DENSITY OF FLUID COKE PARTICLES CONTAINING A HIGH PERCENTAGE OF SULFUR A MINIMUM OF ABOUT 5 WEIGHT % , SAID PARTICLES HAVING BEEN PRODUCED BY CONTACTING A HEAVY PETROLEUM OIL COOKING CHARGE STOCK AT A COKING TEMPERATURE WITH A BODY OF FLUIDIZED COKE PARTICLES IN A REACTION ZONE, WHEREIN THE OIL IS CONVERTED TO PRODUCT VAPORS AND CARBONACEOUS SOLIDS ARE CONTINUOUSLY DEPOSITED ON THE COKE PARTICLES,REMOVING PRODUCT VAPORS FROM THE COKING ZONE, HEATING A PORTION OF THE COKE PARTICLES FROM THE COKING ZONE IN A HEATING ZONE TO INCREASE THE TEMPERATURE OF SAID FLUIDIZED PARTICLES, RETURNING A PROTION OF THE HEATED COKE PARTICLES FROM THE HEATING ZONE TO THE COKING ZONE AND WITHDRAWING PRODUCT PARTICLES WHICH COMPEISES THE STEP PF CONTACTING AT ABOUT ATMOSPHERIC PRESSURE THE PRODUCT COKE PARTICLES WITH ABOUT 100 TO 2000 V/V/HR. OF GAS CONSISTING ESSENTIALLY, AT LEAST 85 VOLUME % OF HYDROGEN AT A MINIMUM TEMPERATURE OF 2400* F. FOR A TREATING TIME IN THE RANGE OF ABOUT 15 MIUTES TO 3 HOURS.