Processing of hydrocarbonaceous materials in the presence of hydrogen

Claim 1

IN A PROCESS FOR THE CATALYTIC REFORMING OF NAPHTHA WHEREIN A FIRST NAPHTHA FRACTION IS PASSED INTO A FIRST REFORMING ZONE UNDER REFORMING CONDITIONS IN THE PRESENCE OF HYDROGEN TO PRODUCE A FIRST EFFLUENT CONTAINING HYDROGEN, LIGHT HYDROCARBONS AND GASOLINE HYDROCARBONS, SAID FIRST EFFLUENT IS COOLED AND SEPARATED INTO A FIRST GAS STREAM CONTAINING HYDROGEN AND LIGHT HYDROCARBONS AND A FIRST LIQUID STREAM CONTAINING LIGHT HYDROCARBONS AND GASOLINE HYDROCARBONS, SAID FIRST LIQUID STREAM IS STABILIZED TO PRODUCE A FIRST OVERHEAD PRODUCT OF LIGHT HYDROCARBONS AND A FIRST GASOLINE PRODUCT, AND SAID FIRST OVERHEAD PRODUCT IS PASSED TO A DEETHANIZER COLUMN WHEREIN ETHANE IS SEPARATED FROM PROPANE AND BUTANE, THE IMPROVEMENT WHICH COMPRISES PASSING A SECOND NAPHTHA FRACTION TO A SECOND REFORMING ZONE UNDER REFORMING CONDITIONS DIFFERING FROM THE CONDITIONS OF SAID FIRST ZONE IN THE PRESENCE OF HYDROGEN TO PRODUCE A SECOND EFFLUENT CONTAINING HYDROGEN, LIGHT HYDROCARBONS AND GASOLINE HYDROCARBONS, CONTACTING SAID FIRST GAS STREAM WITH SAID SECOND EFFLUENT AT A TEMPERATURE BELOW THAT AT WHICH SAID FIRST EFFLUENT IS SEPARATED TO PRODUCE A SECOND GAS STREAM CONTAINING MORE HYDROGEN AND LESS HYDROCARBON THAN SAID FIRST GAS STREAM AND A SECOND LIQUID STREAM CONTAINING GASOLINE HYDROCARBONS AND MORE LIGHT HYDROCARBONS THAN SAID SECOND EFFLUENT, STABILIZING SAID SECOND LIQUID STREAM TO PRODUCE A SECOND OVERHEAD PRODUCT OF LIGHT HYDROCARBONS AND A SECOND GASOLINE PRODUCT, PASSING SAID SECOND OVERHEAD PRODUCT TO SAID DEETHANIZER COLUMN WITH SAID FIRST OVERHEAD PRODUCT FOR SEPARATION OF ETHANE FROM PROPANE AND BUTANE AND RECYCLING A PORTION OF SAID SECOND GAS STREAM TO EACH OF SAID REFORMING ZONES.