Hydrocarbon conversion process to produce lubricating oils and waxes

Claim 1

A PROCESS FOR TREATING HYDROCARBON OIL TO PRODUCE A LUBRICATING OIL AND A PETROLEUM WAX WHICH COMPRISES CHARGING A HYDROCARBON OIL CONTAINING CONSTITUENTS IN PART DISTILLING IN THE LUBRICATING OIL BOILING RANGE INTO A CATALYTIC CRACKING UNIT OPERATING AT A TEMPERATURE OF FROM ABOUT 900 TO 1050*F. AND AT A PRESSURE FROM ABOUT 10 TO 50 P.S.I.G. WHEREIN THE HYDROCARBON OIL IS SEVERELY CATALYTICALLY CRACKED; SUBJECTING THE VAPOROUS HYDROCARBON PRODUCTS FROM SAID CATALYTIC CRACKING OPERATION TO FRACTIONATION, WITHDRAWING FROM SAID FRACTIONATION A HIGHLY AROMATIC DECANT OIL FRACTION HAVING A GRAVITY OF 0 TO 20 API, AND BOILING IN THE LUBRICATING OIL DISTILLATION RANGE WITH APPROXIMATELY 90% BOILING ABOVE 550*F. AND HAVING A VISCOSITY AT 100*F. IN EXCESS OF 200 SAYBOLT UNIVERSAL SECONDS; SUBJECTING SAID DECANT OIL FRACTION TO A SERIES OF REFINING STEPS INCLUDING A SOLVENT EXTRACTION STEP AND A DEWAXING STEP ON THE RAFFINATE THEREFROM TO YIELD A LUBRICATING OIL AND A WAX PRODUCT.