Hydrocracking of a petroleum fraction containing nitrogen compounds with a nickel-tungsten catalyst on a silicamagnesia carrier

Claim 1

A HYDROCRACKING PROCESS FOR PREPARING A MEMBER OF THE GROUP CONSISTING OF FURANCE OIL, DIESEL OIL, JET FUEL AND MIXTURES THEREOF WITH MINIMIZED FORMATION OF GASOING FROM A HYDROCARBON FEED STOCK WHICH CONTAINS A SUBSTANTIAL AMOUNT OF NITROGENOUS COMPOUNDS, WHICH IS RELATIVELY LOW IN CONTENT OF VANADIUM, WHICH HAS A RELATIVELY LOW CARBON RESIDUE, AND WHICH BOILS SUBSTANTIALLY ABOVE ABOUT 650*F., WHICH PROCESS COMPRISING CONTACTING SAID HYDROCARBON FEED STOCK WITH HYDROGEN IN THE PRESENCE OF A NICKEL-TUNGSTEN CATALYST COMPOSITED WITH A SILICA-MAGNESIA CARRIER, AT A TEMPERATURE BETWEEN ABOUT 750* AND 850*F., AT A HYDROGEN PARTIAL PRESSURE BETWEEN ABOUT 2000 AND 3500 P.S.I., AT A SPACE VELOCITY BETWEEN ABOUT 0.2 AND 10.0, AT A HYDROGEN RATIO OF BETWEEN ABOUT 2000 AND 30,000 S.C.F./BBL. AND AT A CONVERSION INTO LOWER BOILING PRODUCTS OF BETWEEN ABOUT 40 AND 65 PERCENT.