Preparing dissimilar oils by hydrocracking

Claim 1

THE PROCESS FOR SIMULTANEOUSLY PRODUCING A LUBRICATING OIL AND A HYDROCARBON FRACTION SELECTED FROM THE GROUP CONSISTING OF FURNACE OIL AND LOWER BOILING HYDROCARBONS BY HYDROGEN TREATMENT OF A FEED STOCK SELECTED FROM THE GROUP CONSISTING OF A DISTILLATE HYDROCARBON FRACTION WHICH BOILS ABOVE ABOUT FURNACE OIL (I.E., ABOVE ABOUT 650*F.) AND WHICH CONTAINS COMPONENTS BOILING IN THE LUBRICATING OIL RANGE AND GAS OIL RANGE AND MIXTURES THEREOF WITH DEASPHALTED RESIDUUM, SAID PROCESS BEING CARRIED OUT BY CONTACTING THE FEED STOCK WITH HYDROGEN IN THE PRESENCE OF A TWO-COMPONENT CATALYST COMPRISING ESSENTIALLY A HYDROGENATING COMPONENT COMPOSITED WITH A CRACKING BASE HAVING AN ACTIVITY ABOVE 25 ON THE KELLOGG SCALE AT A TEMPERATURE BETWEEN ABOUT 650* AND 850*F., AT A HYDROGEN PARTIAL PRESSURE ABOVE ABOUT 1500 P.S.I., AT A SPACE VELOCITY BETWEEN ABOUT 0.2 AND 10, THEREBY PRODUCING A HYDROGEN TREATED STOCK HAVING SUBSTANTIAL COMPONENTS BOILING IN THE RANGE OF FURNACE OIL AND LOWER BOILING HYDROCARBONS (I.E., BELOW ABOUT 650*F.) AND BOILING ABOVE THE FURNACE OIL RANGE (I.E., ABOVE ABOUT 650*F.), FRACTIONATING THIS HYDROGEN TREATED STOCK TO OBTAIN A FRACTION BOILING BELOW ABOUT 650*F. AND ANOTHER FRACTION BOILING ABOVE ABOUT 650*F., WHICH FRACTION CONTAINS LUBRICATING OIL COMPONENTS, RECYCLING A PORTION OF THE FRACTION BOILING ABOVE ABOUT 650*F. TO THE HYDROGEN TREATMENT, RECOVERING ANOTHER PORTION OF THE FRACTION BOILING ABOVE ABOUR 650*F. AS LUBRICATING OIL BASE STOCK PRODUCT AND RECOVERING THE FRACTION BOILING BELOW ABOUT 650*F. AS FURNACE OIL AND LOWER BOILING HYDROCARBON PRODUCT.