Hydrocarbon conversion process to ob- tain increased amounts of isoparaffins and dienes

Claim 1

IN A HYDROCRACKING PROCESS WHEREIN A HYDROCARBON DISTILLATE FEED BOILING WITHIN THE RANGE FROM ABOT 160* TO 1050*F. AND HYDROGEN ARE CONTACTED IN A HYDROCRACKING ZONE IN THE PRESENCE OF A CATALYST COMPRISING A HYDROGENATING-DEHYDROGENATING COMPONENT ON AN ACTIVE CRACKING SUPPORT AT A TEMPERTURE OF FROM 400* TO 900*F., A PRESSURE FROM 500 TO 2000 P.S.I.G. AND A LIQUID HOURLY SPACE VELOCITY FROM 0.1 TO 15 TO PRODUCE PARAFFINS AND ISOPARAFFINS, THE METHOD OF INCREASING THE YIELD OF SAID PARAFFINS AND ISOPARAFFINS WHICH COMPRISES SELECTING SAID FEED FROM THE GROUP CONSISTING OF PARAFFINIC RAFFINATES AND PETROLEUM DISTILLATES CONTAINING AT LEAST 75 VOLUME PERCENT PARAFFINS, SAID RAFFINATES BEING FURTHER SELECTED FROM RAFFINATES FROM UDEX EXTRACTION, SO2 EXTRACTION, FURFURAL EXTRACTION, MOLECULAR SIEVE SEPARATION AND SILICA GEL SEPARATION PROCESSES, AND RECYCLING TO SAID HYDROCRACKING ZONE FROM THE EFFLUENT THEREOF ONLY SUBSTANTIALLY ALL MATERIALS BOILING ABOVE ABOUT 200*F.