Conversion of residua to produce middle distillate oils and gasoline

Claim 1

THE PROCESS WHICH COMPRISES: SEPARATING RESIDUM BY SOLVENT EXTRACTION INTO NONASPHATIC RESIDUAL OIL AND ASPHALTIC RESIDUE; PASSING HYDROGEN AND NONASPHALTIC RESIDUAL OIL THROUGH A HYDROCRACKING REACTION ZONE AT ELLEVATED TEMPERATURE AND PRESSURE EFFECTIVE TO CONVERT AT LEAST 30% OF SAID RESIDUAL OIL TO DISTILLATES BOILING BELOW 1000* F.; PASSING HYDROGEN AND ASPHALTIC RESIDUE THROUGH A SEPARATE THERMAL HYDROCRACKING REACTION ZONE AT ELEVATED TEMPERATURE AND PRESSURE EFFECTIVE TO CONVERT FROM 30 TO 60% OF SAID ASPHALTIC RESIDUE TO DISTILLATES BOILING BELOW 100*F.; SEPARATING FROM THE HYDROGEN-RICH VAPOR EFFLUENTS OF SAID ZONES NORMALLY LIQUID DISTILLATE OILS HAVING NORMALLY GASEOUS HYDROCARBONS DISSOLVED THEREIN; FREEING SAID DISTILATE OILS OF DISSOLVED NORMALLY GASEOUS HYDROCARBONS, AND THEN PASSING AT LEAST A PORTION OF THE DISTILLATE OILS TO A CATALYTIC HYDROCONVERSION REACTION ZONE WITH HYDROGEN TO CONTACT THEREIN A SULFACTIVE HYDROGENATION CATALYST AT ELEVATED TEMPERATURE AND PRESSURE; ALSO PASSING LIQUID RESIDUAL OIL EFFLUENT OF THE FIRST-MENTIONED HYDROCRACKING ZONE TO SAID CATALYTIC HYDROCONVERSION ZONE; RECOVERING HYDROFINED DISTILLATE OILS AND HYDROFINED RESIDUAL OIL FROM SAID CATALYTIC HYDROCONVERSTION ZONE; AND PASSING HYDROFINED RESIDUAL OIL SO RECOVERED TO A CATALYTIC CARCKING PROCESS EMPLOYING A CIRCULATING POWDER CRACKING CATALYST.