Hydrocarbon conversion process with the recycling of an enriched hydrogen stream

Claim 1

IN A PROCESS FOR THE REFORMING OF A MOTOR FUEL FRACTION WHICH PROCESS COMPRISES CONTACTING A MOTOR FUEL FRACTION WITH A REFORMING CATALYST UNDER REFORMING CONDITIONS WITH THE CONCOMITANT PRODUCTION OF HYDROGEN, SEPARATING A HYDROGEN CONTAINING GAS FROM THE REFORMED PRODUCT AND RETURNING A PORTION OF THE SEPARATED HYDROGEN CONTAINING GAS TO THE REFORMING ZONE, THE STEPS WHICH COMPRISES SEPARATELY CONTACTING A LIQUID HYDROCARBON FRACTION IN A HYDROGENATION ZONE UNDER CONDITIONS OF MILD HYDROGENATION WITH A HYDROGENATION CATALYST IN THE PRESENCE OF A PORTION OF SAID SEPARATED HYDROGEN CONTAINING GAS, SAID MILD HYDROGENATION BEING CHARACTERIZED BY THE CONSUMPTION OF HYDROGEN, RECOVERING FROM THE EFFLUENT FROM SAID HYDROGENATION ZONE AN IMPROVED LIQUID HYDROCARBON PRODUCT AND AN ENRICHED HYDROGEN CONTAINING GAS HAVING A HYDROGEN TO HYDROCARBON MOL RATIO SUBSTANTIALLY HIGHER THAN THE HYDROGEN TO HYDROCARBON MOL RATIO OF SAID SEPARATED HYDROGEN CONTAINING GAS AND INTRODUCING AT LEAST A PORTION OF SAID ENRICHED HYDROGEN CONTAINING GAS INTO THE CATALYTIC REFORMING ZONE.