Conversion of heavy hydrocarbonaceous material to lower boiling products

Claim 1

A PROCESS FOR THE CONVERSION OF HYDROCARBON OIL WHICH COMPRISES INTRODUCING A HYDROCARBON OIL CONTAINING SUBSTANTIALLY AMOUNTS OF COMPONENTS BOILING ABOVE 900*F. INTO AN INTERMEDIATE PORTION OF A FRACTIONATION ZONE WHEREIN IT IS CONTACTED UNDER FRACTIONATING CONDITIONS WITH AN ASCENDING STREAM OF HOT PRODUCT VAPORS, WITHDRAWING A LIQUID HEAVY HYDROCARBON STREAM CONTAINING A HIGH BOILING PORTION OF SAID PRODUCT VAPORS IN CONDENSED STATE IN ADMIXTURE WITH AT LEAST A HIGH BOILING PORTION OF SAID HYDROCARBON OIL FROM THE LOWER PORTION OF SAID FRACTIONATION ZONE AND PASSING THE SAME INTO CONTACT WITH A FLUIDIZED BED OF PARTICULATE CONTACT MATEIAL MAINTAINED IN A CONVERSION ZONE AT COKING TEMPERATURE, CONVERTING SAID HEAVY HYDROCARBON STREAM IN THE PRESENCE OF HYDROGEN IN SAID FLUIDIZED BED INTO LOWER BOILING PRODUCT VAPORS AND INTO COKE WHICH COMMINGLES WITH AND DEPOSITS ON SAID CONTACT MATERIAL, PASSING SAID LOWER BOILING PRODUCT VAPORS FROM SAID CONVERSION ZONE TO SAID FRACTIONATION ZONE, INTRODUCING THE RESULTANT COKE-CONTAINING CONTACT MATERIAL FROM SAID CONVERSION ZONE AND A STREAM OF MORE HIGHLY HEATED CONTACT MATEIAL FROM A HOT STORAGE ZONE INTO THE UPPER PORTION OF A FLUIDIZED BED OF CONTACT MATERIAL IN A HYDROGEN PRODUCING ZONE, INTRODUCING SUPERHEATED STREAM INTO THE LOWER PORTION OF THE FLUIDIZED BED IN SAID HYDROGEN PRODUCING ZONE TO ACT THEREIN AS FLUIDIZING MEDIUM AND REACT IN PART WITH A PORTION OF THE COKE PRESENT IN THE FLUIDIZED BED WITH FORMATION OF HYDROGEN GAS, INTRODUCING A STREAM OF THE RESULTANT HYDROGEN GAS INTO THE LOWER PORTION OF TH EFLUIDIZED BED IN SAID CONVERSION ZONE TO ACT THEREIN AS FLUIDIZING MEDIUM AND FURNISH SAID HYDROGEN, WITHDRAWING THE RESIDUAL CONTACT MATERIAL FROM THE LOWER PORTION OF SAID HYDROGEN PRODUCING ZONE AND SUSPENDING THE SAME IN A STREAM OF FREE OXYGEN-CONTAINING GAS, PASSING THE RESULTANT SUSPENSION UPWARDLY THROUGH A VERTICALLY ELONGATED HEATING ZONE WHEREIN COKE PRESENT IN SAID SUSPENSION IS OXIDIZED AND THE SUSPENSION IS HEATED TO A TEMPERATURE SUBSTANTIALLY ABOVE THAT PREVAILING IN SAID HYDROGEN PRODUCING ZONE, DISCHARGING THE HEATED SUSPENSION INTO AN ELEVATED SEPARAITNG ZONE AND THEREIN SEPARATING THE SAME INTO HIGHLY HEATED PARTICLE AND CARRYING GAS, KWITHDRAWING SAID CARRYING GS FROM SAID SEPARATING ZONE, PASSING SAID HEATED PARTICLES OF CON TACT MATERIAL SUBSTANTIALLY BY GRAVITATIONAL FLOW INTO SAID HOT STORAGE ZONE AND THEREIN MAINTAINING THEM AS A DESCENDING DENSE BED IN INDIRECT HEAT EXCHANGE WITH SAID VERTICALLY ELONGATED HEATING ZONE, PASSING A STREAM OF SAID HEATED PARTICLES FROM SAID HOT STORAGE ZONE INTO THE FLUIDIZED BED IN SAID COKING ZONE AT A RATE, SUFFICIENT TO MAINTAIN THEREIN SAID COKING TEMPERATURE AND PASSING ANOTHER STREAM OF SAID HEATED PARTICLES FROM SAID HOT STORAGE ZONE TO SAID HYDROGEN PRODUCING ZONE AS SAID STREAM OF MORE HIGHLY HEATED CONTACT MATERIAL.