Combination catalytic reforming-catalytic dehydrogenation process

Claim 1

A PROCESS WHICH COMPRISES SUBJECTING HYDROGEN AND A GASOLINE FRACTION TO CATALYTIC REFORMING IN A REFORMING ZONE, INTRODUCING AT LEAST A PORTION OF THE EFFLUENT FROM SAID REFORMING ZONE TO A SEPATRATION ZONE, SEPARATELY WITHDRAWING FROM SAID SEPARATION ZONE A PREDOMINANTLY AROMATIC FRACTION AND A PREDOMINANTLY PARAFFINIC FRACTION CONTAINING HYDROCARBONS BOILING BETWEEN ABOUT 156* AND ABOUT 400*F., INTRODUCING AT LEAST A PORTION OF SAID PREDOMINANTYLY PARAFFINIC FRACTION TO A FRACTIONATION ZONE, SEPARATELY WITHDRAWING FROM SAID FRACTIONATION ZONE, AT LEAST A HIGH BOILING FRACTION HAVING AN END BOILING POINT OF ABOUT 400*F. AND A LOW BOILING FRACTION HAVING AN END BOILING POINT BETWEEN ABOUT 225* AND ABOUT 325*F., RECYCLING AT LEAST A PORTION OF SAID HIGH BOILING FRACTION TO SAID REFORMING ZONE, AND SUBJECTING AT LEAST A PORTION OF SAID LOW BOILING FRACTION TO CATALYTIC DEHYDROGENATION IN A DEHYDROGENATION ZONE AND RECOVERING THE EFFLUENT FROM SAID DEHYDRATION ZONE AT A TEMPERATURE OF FROM ABOUT 200*F. TO ABOUT 1000*F., A PRESSURE OF FROM ABOUT 50 TO ABOUT 2000 POUNDS PER SQUARE INCH AND A WEIGHT HOURLY SPACE VELOCITY OF FROM ABOUT 0.5 TO ABOUT 20 TO CONVERT PARAFFINS TO OLEFINS.