Process for hydrocarbon conversion

Claim 1

THE PROCESS FOR THE CONVERSION OF HYDROCARBON OILS TO LOWER BOILING HYDROCARBON OILS WHICH COMPRISES THE STEPS OF (1) PUMPING THE OIL TO BE CONVERTED TO A PRESSURE OF AT LEAST 300 P.S.I.G., (2) CONTACTING SAID OIL UNDER SAID PRESSURE WITH A HOT MIXTURE OF NORMALLY GASEOUS AND NORMALLY LIQUID HYDROCARBONS AND COKE PRODUCED AS HEREINAFTER SPECIFIED THEREBY TO OBTAIN A PARTIALLY HEATED LIQUID FRACTION OF A MIXTURE OF UNCONVERTED AND PARTIALLY CONVERTED HYDROCARBONS CONTAINING SUSPENDED COKE AND A PARTIALLY COOLED VAPOR FRACTION, (3) RELEASING THE PRESSURE ON SAID LIQUID FRACTION AND FRACTIONATING THE SAME AT A PRESSURE BELOW 100 P.S.I.G. INTO A GASOLINE FRACTION, AN INTERMEDIATE DISTILLATE FRACTION OF UNCONVERTED AND PARTIALLY CONVERTED OIL AND A RESIDUE FRACTION OF UNCOVERTED AND PARTIALLY CONVERTED OIL CONTAINING THE SUSPENDED COKE, (4) SUBJECTING SAID INTERMEDIATE FRACTION TO CATALYTIC CRACKING, (5) SEPARATELY FRACTIONATING THE PRODUCT OF SAID CATALYTIC CRACKING INTO A GASEOUS FRACTION, A GASOLINE FRACTION, AN INTER MEDIATE DISTILLATE FRACTION OF UNCONVERTED AND PARTIALLY CONVERTED OIL AND A RESIDUE FRACTION, (6) COMMINGLING AT LEAST A PART OF SAID FRACTION FROM THE CATALSTIC CRACKING HEAVIER THAN GASOLINE WITH THE ABOVE SAID RESIDUE FRACTION OF UNCONVERTED AND PARTIALLY CONVERTED OIL AND CONTAINING SUSPENDED COKE THEREBY TO PRODUCE A MIXTURE OF UNCOVERTED AND PARTIALLY CONVERTED OIL AND SUSPENDED COKE, (7) PUMPING SAID LASTMENTIONED MIXTURE TO A PRESSURE OF AT LEAST 300 P.S.I.G., (8) HEATING SAID LAST-MENTIONED MIXTURE (9) COMPRESSING SAID GASEOUS FRACTION FROM STEP 5 TO AT LEAST 300 P.S.I.G., (10) HEATING SAID GASEOUS FRACTION FROM STEP 9, (11) CONTACTING SAID HEATED MIXTURE FROM STEP 8 AND SAID GAS OF STEP 10 WITH A FLUIDIZED MASS OF COKE AT A PRESSURE OF AT LEAST 300 P.S.I.G THEREBY TO PRODUCE A HOT VAPORIZED PRODUCT OF NORMALLY LIQUID HYDROCARBONS AND GASES CARRYING SUSPENDED COKE, AND TO DEPOSIT COKE IN THE FLUIDIZED MASS OF COKE, (12) WITHDRAWING COKE FROM SAID FLUIDIZED MASS OF COKE, (13) CONTACTING THE TOTAL VAPOROUS PRODUCT OF STEP 11 INCLUDING SAID SUSPENDED COKE WITH THE FEED OIL AS SPECIFIED IN STEP 2.