Catalytic hydrocracking process with hydrogenation of the hydrocracked products

Claim 1

A PROCESS FOR CONVERTING AN AROMATIC-CONTAINING HYDROCARBONACEOUS CHARGE STOCK INTO LOWER-BOILING HYDROCARBON PRODUCTS WHICH COMPRISES THE STEPS OF: (A) COMMINGLING SAID CHARGE STOCK WITH A PREVIOUSLY HYDROCRACKED PRODUCT AND HYDROGEN REACTING SAID CHARGE STOCK IN CONTACT WITH A NON-SILICEOUS HYDROGENATION CATALYST CONTAINING AT LEAST ONE METALLIC COMPONENT FROM THE PLATINUM-GROUP OF THE PERIODIC TABLE, AND AT HYDROGENATION CONDITIONS INCLUDING A TEMPERATURE FROM ABOUT 350* F. TO ABOUT 650* F. AND A LIQUID HOURLY SPACE VELOCITY OF FROM ABOUT 1.0 TO ABOUT 15.0 CORRELATED TO HYDROGENATE AROMATIC COMPOUNDS WITHOUT EFFECTING A SUBSTANTIAL DEGREE OF HYDROCRACKING; (B) SEPARATING THE RESULTING SUBSTANTIALLY AROMATIC-FREE HYDROGENATED PRODUCT EFFLUENT TO PROVIDE A HYDROGENRICH GASEOUS PHASE AND A NORMALLY LIQUID HYDROCARBON FRACTION HAVING AN INITIAL BOILING POINT OF AT LEAST ABOUT 400 F.; (C) COMMINGLING SAID GASEOUS PHASE AND SAID HYDROCARBON FRACTION AND REACTING THE SAME IN CONTACT WITH AN ALUMINA-SILICA HYDROCRACKING CATALYST CONTAINING AT LEAST ONE METALLIC COMPONENT FROM THE METALS AND COMPOUNDS OF GROUP VIII OF THE PERIODIC TABLE, AND AT HYDROCRACKING CONDITIONS INCLUDING A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 200* F. TO ABOUT 800* F.; AND (D) COMMINGLING THE TOTAL EFFLUENT FROM THE HYDROCRACKING STEP WITH SAID AROMATIC-CONTAINING CHARGE STOCK AS SAID PREVIOUSLY HYDROCRACKED PRODUCT.