High octane gasoline manufacture

Claim 1

A PROCESS FRO THE PRODUCTION OF HIGH OCTANE GASOLINE WHICH COMPRISES PASSING A STRAIGHT-RUM NAPHTHA BOILING WITHIN THE GASOLINE BOILING RANGE TO A REFORMING ZONE, THEREIN SUBJECTING SAID NAPHTHA TO THE ACTION OF A DUALFUNCTION DEHYDROGENATION-SIOMERIZATION CATALYST AT A TEMPERATURE OF FORM 850*F. TO 975*F., AT A PESSURE OF FROM 200 P.S.I.G. TO 600 P.S.I.G. AND IN THE PRESENCE OF ADDED HYDROGEN, SEPARATING A NORMALLY LIQUID PRODUCT FROM THE EFFLUENT FROM THE REFORMING ZONE; PASSING SAID NORMALLY LIQUID PRODUCT TO A CATALYTIC CRACKING ZONE AND SUBJECTING IT THEREIN TO THE ACTION OF A CRACKING CATRALYST SELECTED FROM THE GROUP CONSISTING OF SYNTHETIC SILICA-ALUMINA GEL, BAUXITE, AND NATURALLY-OCCURRING CLAYS, IN THE ABSENCE OF ADDED HYDROGEN, AT A TEMPERATURE OF FROM 850*F. TO 975*F., AND AT A LIQUID HOURLY SPACE VELOCITY OF 0.5 TO 2, THE TEMPERATURE AND SPACE RATE BEIG CORRELATED TO PRODUCE A CRACKING SEVERITY INSUFFICIENT TO SUBSTANTIALLY DEMETHLYLATE AROMATICS; RECOVERING A SECOND REACTION PRODUCT FROM THE CATALYTIC CRACKING ZONE, AND FRACTIONATING THE SECOND REACTION PRODUCT TO RECOVER A C3-C4 FRACTION COMPRISING OLEFINS, AND A HIGHER BOILING FRACTION RICH IN AROMATICS.