Process for producing high octane motor fuels

Claim 1

A PROCESS FOR PRODUCING HIGH OCTANE MOTOR FUEL WHICH COMPRISES FRACTIONATING A CRAKED GASOLINE INTO A LIGHT , AND INTERMEDIATE,AND A HEAVY GASOLINE FRACTION; SUB JECTING SAID HEAVY FRACTION TO CATALYTIC POLYMERIZATION AT A TEMPERATURE IN THE RANGE OF 425 TO 625* F., A PRESSURE IN THE RANGE OF 400 TO 600 P.S.I.G., AND A SPACE VELOCITY IN THE RANGE OF 2.5 TO 3.0 V./V./HR., SO AS TO POLYMERIZE THE MAJOR PORTION OF THEOLEFINS PRESENT; FRACTIONATING THE EFFLUENT FROM SAID POLYMERIZATION TO RECOVER AN OVERHEAD GASOLINE FRACTION HAVING AN END POINT OF ABOUT 400* F. AND A BOTTOMS FRACTION COMPRISING HEAVY POLYMERIZED MATERIALS; CATALYTICALLY REFORMING SAID OVERHEAD GASOLINE FRACTION IN CONTACT WITH A PLATINUM-CONTAINING REFORMING CATALYST AND IN ADMIXTURE WITH HYDROGEN AT A TEMPERATURE IN THE RANGE OF 850 TO 950* F. AND A PRESSURE IN THE RANGE OF 200 TO 900 P.S.I.G. SO AS TO PRODUCE A HIGH OCTANE REFORMATE; SUBJECTING SAID INTERMEDIATE GASOLINE FRACTION IN ADMIXTURE WITH C3-C4 ISOPARAFFINS AND ADDED C3-C5 OLEFINS TO HF ALKYLATION AT A TEMPERATURE IN THE RANGE OF 50 TO 120 *F., A PRESSURE SUFFICIENT TO MAINTAIN LIQUID PHASE,