Upgrading of a naphtha with the recycling of the hydrogen produced in the reforming stage

Claim 1

A COMBINATION CATALYTIC REFORMING AND CATALYTIC ISOMERIZATION PROCESS WHICH COMPRISES SEPARATING A LIGHT HYDROCARBON OIL RICH IN NORMAL PARAFFINS IN A FIRST SEPARATION ZONE FROM A HYDROCARON FEED SUITABLE FOR REFORMING, EFFECTING A FURTHER SEPARATION OF A STREAM RICH IN ISOPARAFFINS FROM SAID LIGHT HYDROCARBON OIL IN A SECOND SEPARATION ZONE, CONTACTING THE NORMAL PARAFFIN-RICH OIL FROM THE SECOND SEPARATION ZONE IN A FIRST REACTION ZONE WITH A SOLID ISOMERIZATION CATALYST IN THE PRESENCE OF HYDROGEN UNDER CONDITIONS SUITABLE TO EFFECT ISOMERIZATION OF THE NORMAL PARAFFINS, SEPARATING A HYDROGEN RICH STREAM FROM THE ISOMERIZATION ZONE EFFLUENT, PASSING THE SEPARATED HYDROGEN RICH STREAM CONTAINING UNREACTED NORMAL PARAFFINS, PRODUCTS ISOMERS, LOWER AND HIGHER BOILING PRODUCTS AND HYDROGEN TO A THIRD SEPARATION ZONE WHEREIN LOWER BOILING PRODUCTS AND HYDROGEN ARE REMOVED, PASSING THE THUS SEPARATED HYDROGEN TO A DESULFURIZATION ZONE PASSING ISOMERIZATION EFFLUENT SUBSTANTIALLY FREE OF HYDROGEN WITH THE FEED TO THE FIRST SEPARATION ZONE, PASSING THE HEAVY FRACTION FROM THE FIRST SEPARATION ZONE TO A SECOND REACTION ZONE WHEREIN IT IS CONTACTED WITH A DESULFURIZATION CATALYST IN THE PRESENCE OF HYDROGEN SEPARATED FROM SAID ISOMERIZATION EFFLUENT UNDER CONDITIONS SUITABLE TO EFFECT DESULFURIZATION OF SAID HEAVY FRACTION, CONTACTING THE DESULFURIZED MATERIAL IN A THIRD REACTION ZONE WITH A REFORMING CATALYST IN THE PRESENCE OF HYDROGEN UNDER CONDITIONS SUITABLE TO PRODUCE A CONVERSION PRODUCT CONTAINING HYDROGEN, SEPARATING HYDDROGEN FROM THE REFORMING ZONE EFFLUENT AND PASSING HYDROGEN SEPARATED FROM THE REFORMING EFFLUENT TO SAID ISOMERIZATION ZONE.