Coking oil with a fluidized bed of calcium oxide

Claim 1

IN A PROCESS FOR COKING A HEAVY HYDROCARBON OIL FEED WHEREIN THE FEED IS CONTACTED IN A REACTION ZONE AT A COKING TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 1100* TO ABOUT 1300*F. WITH A FLUIDIZED BED OF SOLID CARBONACEOUS PARTICLES, PRODUCT VAPORS ARE REMOVED FROM THE REACTION ZONE, CARBONACEOUS PARTICLES FROM THE BED ARE CIRCULATED THROUGH A HEATING ZONE, THEREIN SUBJECTED TO COMBUSTION CONDITIONS WITH AN OXYGEN-CONTAINING GAS, AND RETURNED TO THE REACTION ZONE FOR SUPPLYING HEAT THERETO, THE IMPROVEMENT WHICH COMPRISES: PREVENTING AGGLOMERATION OF THE BED PARTICLES BY ESTABLISHING AND MAINTAINING IN SAID REACTION ZONE A FLUIDIZED BED CONSISTING ESSENTIALLY OF CALCIUM OXIDE AND CARBONACEOUS RESIDUE FROM SAID FEED, THE PROPORTION OF CALCIUM OXIDE IN SIAD FLUIDIZED BED BEING 45-75%, AND WITHDRAWING A COKE-LIME PRODUCT FROM THE PROCESS THE COKE PORTION THEREOF BEING SUBSTANTIALLY UNIFORMLY DISTRIBUTED THROUGHOUT SAID PRODUCT.