Catalytic hydrocracking process with the preliminary hydrogenation of the aromatic containing feed oil

Claim 1

A PROCESS FOR CONVERTING HYDROCARBONACEOUS MATERIAL CONTAINING AROMATIC COMPOUNDS INTO LOWER-BOILING HYDROCARBON PRODUCTS WHICH COMPRISES REACTING SAID HYDROCARBONACEOUS MATERIAL WITH HYDROGEN IN CONTACT WITH A NONACIDIC HYDROGENATION CATALYST, AT HYDROGENATION CONDITIONS INCLUDING A TEMPERATURE OF AT LEAST ABOUT 300* F., SELECTED TO PROVIDE A MAXIMUM CATALYST TEMPERATURE LESS THAN ABOUT 650* F. AND TO HYDROGENATE AROMATIC COMPOUNDS WITHOUT SUBSTANTIAL HYDROCRACKING OF SAID HYDROCARBONACEOUS MATERIAL; THEREAFTER REACTING THE TOTAL HYDROGENATED, SUBSTANTIALLY AROMATIC-FREE HYDROCARBONACEOUS EFFLUENT FROM THE FIRST-MENTIONED STEP WITH HYDROGEN AT HYDROCRACKING CONDITIONS INCLUDING A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 400* F. TO ABOUT 950* F., AND IN CONTACT WITH AN ACIDIC HYDROCRACKING CATALYST; THE PROCESS BEING FURTHER CHARACTERIZED IN THAT SAID HYDROGENATION CATALYST COMPRISES A PLATINUM-GROUP METALLIC COMPONENT, A NON-SILICEOUS INORGANIC OXIDE AND AT LEAST ONE METALLIC