Gasoline production

Claim 1

IN A PROCESS FOR PRODUCING A HIGH-OCTANE GASOLINE BY BLENDING A HYDROCARBON MIXTURE OF THE GASOLINE RANGE WITH AN ETHER, THE IMPROVEMENT WHICH COMPRISES: A. PRODUCING A MIXTURE COMPRISING PROPYLENE AND ISOBUTENE IN WHICH THE MOL RATIO OF THE ISOBUTENEE IS TO PROPYLENE IS IN THE RANGE FROM ABOUT 1-1.25 TO 1, RESPECTIVELY, BY MAINTAINING A REFINERY PROCESS STREAM COMPRISING A SUBSTANTIALLY ISOBUTANCE FEED IN A REACTION ZONE AT A TEMPERATURE IN THE RANGE FROM ABOUT 1125*F. TO 1275*F., B. SEPARATING BY DISTILLATION SAID MIXTURE INTO A PROPYLENERICH STREAM AND AN ISOBUTENE-RICH STREAM, C. PRODUCING ISOPROPANOL BY CONTACTING A MIXTURE OF THE PROPYLENE-RICH STREAM AND WATER WITH A SOLID ACIDIC HYDRATION CATALYST AT A TEMPERATURE IN THE RANGE FROM ABOUT 100* TO ABOUT 400*F, D. PRODUCING-BUTYL ISOPROPYL ETHER BY REACTING SAID ISOPROPANOL WITH SAID ISOBUTENE-RICH STREAM BY CONTACTING A MIXTURE OF SAID REACTANTS WITH A SOLIDS ACIDIC ETHERATION CATALYST IN A REACTION ZONE AT A TEMPERATURE BETWEEN ABOUT 50* TO 200*F AND E. PRODUCING A HIGH-OCTANE GASOLINE BY BLENDING SAID ETHER WITH SAID GASOLINE-RANGE HYDROCARBON MIXTURE.