Process for making a low sensitivity premium gasoline

Claim 1

A PROCESS FOR MAKING LOW SENSITIVITY PREMIMUM GASOLINE WHICH COMPRISES: FRACTIONALLY DISTILLING A TOTAL CRUDE OIL TO OBTAIN A STRAIGHT RUN C4 FRACTION, A STRAIGHT RUN C5 TO 190* F. LIGHT GASOLINE FRACTION, A STRAIGHT RUN GAS OIL HAVING AN INITIAL BOILING POINT OF ABOUT 620*F. AND A STRAIGHT RUN RESIDUUM; COKING SAID STRAIGHT RUN RESIDUUM, AND RECOVERING CONVERSON PRODUCTS INCLUDING C4 OLEFINS, N-BUTANE, ISOBUTANE, A COKER GASOLINE FRACTION AND COKER GAS OIL; SUBJECTING SAID STRAIGHT RUN GAS OIL AND SAID COKER GAS OIL TO FLUID CATALYTIC CRACKING AND RECOVERING CONVERSION PRODUCTS INCLUDING C4 OLEFINS, N-BUTANE, ISOBUTANE, C5 OLEFINS AND A CRACKED GASOLINE FRACTION; SAID FLUID CATALYTIC CRACKING OCCURRING AT SEVERE CONDITIONS, INCLUDING A TEMPERATURE OF AT LEAST 975*F., SUFFICIENT TO ACHIEVE CONVERSION OF AT LEAST 70 VOLUME PERCENT OF SAID CATALYTIC CRACKING CHARGE TO PRODUCE A MOLAR YIELD OF C4 OLEFINS GREATER THAN THE NUMBER OF MOLS OF N-BUTANE AND ISOBUTANE RECOVERED BY STRAIGHT RUN FRACTIONATION OF SAID CRUDE OIL AND BY FRACTIONATION OF SAID CONVERSION PRODUCTS MINUS THE MOLS OF BUTANES REQUIRED FOR VAPOR PRESSURE ADJUSTMENT OF THE FINAL GASOLINE PRODUCTS; SUBJECTING ALL OF SAID C4 OLEFINS PRODUCED BY SAID FLUID CATALYTIC CRACKING AND COKING OPERATIONS AND AT LEAST A PORTION OF THE C5 OLEFINS PRODUCED BY SAID FLUID CATALYTIC CRACKING TO ALKYLATION WITH ALL OF THE ISOBUTANE OBTAINED DIRECTLY AND INDIRECTLY FROM FRACTION OF SAID CRUDE AND SAID CONVERSION PRODUCTS AND WITH ISOBUTANE FROM ANOTHER SOURCE AND RECOVERING AN ALKYLATE THEREFROM; AND BLENDING SAID ALKYLATE WITH SAID AFOREMENTIONED GASOLINE FRACTIONS TO PRODUCE A PREMIUM GASOLINE HAVING AN ACTANE RATING SENSITIVITY NO GREATER THAN 7.5.