Two-stage reforming with intermediate fractionation

Claim 1

A METHOD OF PRODUCING HIGH OCTANE GASOLINE WHICH COMPRISES REFORMING LOW OCTANE GASOLINE CONTAINING PRINCIPALLY C7 AND HEAVIER HYDROCARBONS IN THE PRESENCE OF HYDROGEN AND A REFORMING CATALYST AT RELATIVELY HIGH PRESSURES OF AT LEAST 300 P.S.I.G. BUT BELOW 750 P.S.I.G. AND AT A TEMPERATURE IN THE RANGE 750* TO 1050* F. AND A SPACE VELOCITY IN THE RANGE 0.1 TO 6 V./HR/V. TO CRACK C10 AND HEAVIER HYDROCARBONS WHILST DEHYDROGENATING NAPHTHENES TO OBTAIN A HIGH PRESSURE REACTION ZONE EFFLUENT COMPRISING HYDROGEN AND C1+ HYDROCARBONS, SEPARATING HYDROGEN AND C1-C6 HYDROCARBONS FROM SAID HIGH PRESSURE ZONE EFFLUENT TO OBTAIN A LOW PRESSURE ZONE CHARGE STOCK COMPRISING PRINCIPALLY C7 AND HEAVIER HYDROCARBONS, REFORMING SAID LOW PRESSURE ZONE CHARGE STOCK IN THE PRESENCE OF A REFORMING CATALYST AND HYDROGEN AT A REACTION PRESSURE LOWER THAN THE AFORESAID HIGH PRESSURE AND NOT EXCEEDING 300 P.S.I.G. AND REFORMING CONDITIONS

Claim 2

A METHOD OF PRODUCING HIGH OCTANE GASOLINE WHICH COMPRISES REFORMING LOW OCTANE GASOLINE CONTAINING PRINCIPALLY C7 AND HEAVIER HYDROCARBONS IN THE PRESENCE OF HYDROGEN AND A REFORMING CATALYST AT RELATIVELY HIGH PRESSURES OF AT LEAST 300 P.S.I.G. BUT BELOW 750 P.S.I.G. AND AT A TEMPERATURE IN THE RANGE 750* TO 1050* F. AND A SPACE VELOCITY IN THE RANGE 0.1 TO 6 V./HR/V. TO CRACK C10 AND HEAVIER HYDROCARBONS WHILST DEHYDROGENATING NAPHTHENES TO OBTAIN A HIGH PRESSURE REACTION ZONE EFFLUENT COMPRISING HYDROGEN AND C1+ HYDROCARBONS, SEPARATING HYDROGEN AND C1-C6 HYDROCARBONS FROM SAID HIGH PRESSURE ZONE EFFLUENT TO OBTAIN A LOW PRESSURE ZONE CHARGE STOCK COMPRISING PRINCIPALLY C7 AND HEAVIER HYDROCARBONS, REFORMING SAID LOW PRESSURE ZONE CHARGE STOCK IN THE PRESENCE OF A REFORMING CATALYST AND HYDROGEN AT A REACTION PRESSURE LOWER THAN THE AFORESAID HIGH PRESSURE AND NOT EXCEEDING 300 P.S.I.G. AND REFORMING CONDITIONS