Integrated hydrofining process

Claim 1

INTEGRATED PROCESS FOR THE PRODUCTION OF HIGH QUALITY PETROLEUM PRODUCTS WHICH COMPRISES INTRODUCING A THERMALLY REFORMED NAPHTHA BOILING IN THE RANGE FROM ABOUT 100* F. TO 450* F. INTO A PRODUCT FRACTIONATOR, INTRODUCING A HEAVY CATALYTIC HEATING OIL BOILING IN THE RANGE FROM ABOUT 550* F, TO 650* F, INTO SAID PRODUCT FRACTIONATOR, SEPARATING A HEAVY RESIDUAL FRACTION FROM A CATALYTIC CRACKING OPERATION, THERMALLY CRACKING SAID FRACTION, DISTILLING SAID LATTER FRACTION TO SEGREGATE AN OIL BOILING IN THE RANGE FROM ABOUT 400* F, TO 650* F, INTRODUCING SAID LATTER STREAM INTO SAID PRODUCT FRACTIONATOR, INTRODUCING A NAPTHA SECURED FROM A VISBREAKING OPERATION INTO SAID PRODUCT FRACTIONATOR, MAINTAINING THE PRESSURE AND TEMPERATURE IN SAID PRODUCT FRACTIONATOR TO SEGREGATE A PETROLEUM OIL BOILING IN THE MOTOR FUEL BOILING RANGE AND TO SEGRAGATE A PETROLEUM OIL BOILING IN THE HEATING OIL BOILING RANGE, MILDLY HYDROFINING SAID OIL BOILING IN THE MOTOR FUEL BOILING RANGE IN AN INITIAL HYDROFINING ZONE, REMOVING THE HYDROFINED PRODUCT FROM SAID INITIAL HYDROFINING ZONE AND SEPARATING NORMALLY LIQUID HYDROCARBONS FROM NORMALLY GASEOUS CONSTITUENTS COMPRISING HYDROGEN, MILDLY HYDROFINING SAID PETROLEUM OIL BOILING IN THE HEATING OIL BOILING RANGE IN A SECONDARY HYDROFINING ZONE, THE PROCESS BEING CHARACTERIZED IN THAT THE TEMPERATURES, PRESSURES, FEED RATES, AND CATALYST ACTIVITIES IN SAID HYDROFINING ZONES ARE SUCH THAT THE HYDROGEN CONSUMPTION IS BELOW ABOUT 60 STANDARD CUBIC FEET PER BARREL OF OIL FEED, REMOVING THE HYDROFINED PRODUCT FROM SAID SECONDARY HYDROFINING ZONE AND SEPARATING NORMALLY LIQUID HYDROCARBONS FROM NORMALLY GASEOUS CONSTITUENTS COMPRISING HYDROGEN, COMBINING SAID GASEOUS CONSTITUENTS COMPRISING HYDROGEN FROM SAID INITIAL AND SAID SECONDARY HYDROFINING ZONE, PASSING THE COMBINED STREAM TO A PURIFICATION ZONE, TREATING SAID COMBINED STREAM IN SAID PURIFICATION ZONE UNDER CONDITIONS TO REMOVE HYDROGEN SULFIDE THEREFROM, REMOVING FROM SAID PURIFICATION ZONE A STREAM COMPRISING HYDROGEN AND RECYCLING SAID STREAM TO SAID INITIAL AND SAID SECONDARY HYDROFINING ZONES.