Obtaining neutral distillates from petroleum

Claim 1

PROCESS FOR REFINING PETROLEUM WHICH COMPRISES: DISTILLING PETROLEUM CONTAINING NAPHTHENIC ACIDS AND LUBRICATING OIL CONSTITUENTS TO OBTAIN A VAPORIZED PORTION CONTAINING NAPHTHENIX ACIDS AND TO OBTAIN A RESIDUE, CONTACTING SAID VAPORIZED PORTION UNDER VAPOR PHASE TREATING CONDITIONS WITH LIQUID ALKALINE MATERIAL IN A TREATING ZONE, THEREBY TO FORM ALKALI METAL NAPHTHENATES AND TO CONDENSE RELATIVELY HIGH BOILING HYDROCARBON CONSTITUENTS OF SAID PORTION, REMOVING TREATED VAPORS FROM THE TREATING ZONE, REMOVING SAID HIGH BOILING HYDROCARBON CONSTITUENTS FROM SAID LIQUID ALKALINE MATERIAL A CHARGE STOCK SEABSENCE OF LIQUID ALKALINE MATERIAL A CHARGE STOCK SELECTED FROM THE GROUP CONSISTING OF (1) SAID RESIDUE, (2) SAID HIGH BOILING HYDROCARBON CONSTITUENTS, AND (3) MIXTURES OF SAID RESIDUE AND SAID HIGH BOILING HYDROCARBON CONSTITUENTS, THEREBY TO OBTAIN A DISTILLATE HAVING SAYBOLT UNIVERSAL VISCOSITY AT 210*F. WITHIN THE APPROXIMATE RANGE FROM 100 TO 200 SECONDS, CONTACTING THE LAST-NAMES DISTILLATE WITH HYDROGEN AT 500 TO 750* F. AND 100 TO 2000 P.S.I.G. IN THE PRESENCE OF A HYDROGENATION CATALYST TO OBTAIN A HYDROGENATED DISTILLATE, AND BLENDING SAID HYDROGENATED DISTILLATE AND SAID TREATED VAPORS TO OBTAIN DISTILLATES CONTAINING CONSTITUENTS OF BOTH.