Combination deasphalting, coking, and catalytic cracking process

Claim 1

A RESIDUAL OIL CONVERSION PROCESS WHICH COMPRISES THE STEPS, IN COMBINATION, OF: SEPARATING A RESIDUAL OFF HAVING A CONRADSON CARBON CONTENT IN THE RANGE OF 5 TO 50 WT. PERCENT AND A GRAVITY IN THE RANGE OF 0 TO 20* A.P.I. BY DEASPHALTING USING A SOLVENT COMPRISING LIGHT HYDROCARBONS HAVING 2 TO 5 CARBON ATOMS TO OBTAIN A SOLVENT-CONTAINING DEASPHALTED OIL HAVING A SUBSTANTIALLY LOWER CONRADSON CARBON CONTENT AND A SOLVENT-CONTAINING ASPHALT; SEPARATELY COKING IN TWO IDIVIDUAL COKING STEPS SAID SOLVENT-CONTAINING DEASPHALTED OIL AND SOLVENTCONTAING ASPHALT BY CONTACT WITH FLUIDIZED SOLIDS AT A TEMPERATURE IN THE RANGE OF 900-1400*F., RECOVERING FROM THE DEASPHALTED OIL COKING STEP A GAS OIL HAVING AN END POINT ABOVE 1100*F., COMBINING AND CATALYTICALLY ASPHALT COKING STEP A GAS OIL HAVING AN END POINT SUBSTANTIALLY BELOW 1100*F.; COMBINING AND CATALYTICALLY CRACKING THE TWO GAS OIL STREAMS HAVING CHARACTERISTICALLY DIFFERENT END POINTS WHICH HAVE BEEN SO RECOVERED BY CONTACTING SAID GAS OILS IN A CATALYTIC CRACKING ZONE WITH FLUIDIZED CRACKING CATALYST AT A TEMPERATURE IN THE RANGE OF 800 TO 1000*F.; AND RECOVERING HYDROCARBON PRODUCTS FROM THE CATALYTIC CRACKING ZONE EFFUENT.