Refined heavy alkylate bottoms oil

Abstract

Abstract A COLORLESS AND ODORLESS SPECIALTY OIL HAVING A VISCOSITY WITHIN THE RANGE FROM ABOUT 75 SSU TO ABOUT 3000 SSU AT 100*F., A VISCOSITY INDEX WITHIN THE RANGE FROM ABOUT 0 TO ABOUT -200, AND AN AROMATICS CONTENT COMPARABLE TO THAT OF WHITE OILS IS PREPARED BY HYDROGEN REFINING AND THEN DYDROGENATING A HEAVY ALKYLATE BOTTOMS OIL OF APPROXIMATELY THE SAME VISCOSITY AND VISCOSITY INDEX WHICH HAS A BOILING RANGE WITHIN THE LIMITS FROM ABOUT 540*F. TO ABOUT 800*F. THE HEAVY ALKYLATE OIL CONTAINS AT LEAST ABOUT 90 WEIGHT PRECENT SATURATED HYDROCARBONS, WHICH ARE ABOUT 50 TO 70 WEIGHT PERCENT NAPHTHENES, THE REMAINDER BEING ISOPARAFFINS. THESE SATURATED MOLECULES HAVE HIGHLY BRANCHED SIDE CHAINS WHICH ARE CHARACTERIZED BY A HIGH "BRANCHINESS RATIO" OF FROM ABOUT 2.6 TO ABOUT 3.9 THE NAPHTHENES ARE PREDOMINANTLY POLYCYCLIC AND HAVE A BICYCLIC RATIO OF FROM ABOUT 0.4 TO ABOUT 0.8. HYDROGEN REFINING OF THE HEAVY ALKYLATE OIL IS CARRIED OUT IN THE PRESENCE OF A SULFUR-INSENSITIVE CATALYST AT A TEMPERATURE FROM ABOUT 400*F. TO ABOUT 700*F. UNDER A HYDROGEN PRESSURE FROM ABOUT 150 TO ABOUT 2000 P.S.I.G. USING A HYDROGEN-TREAT RATE FROM ABOUT 100 TO ABOUT 1000 S.C.F./BBL. AT A LIQUID HOURLY SPACE VELOCITY FROM ABOUT 0.1 TO ABOUT 10. HYDROGENATION OF THE HYDROGENREFINED HEAVY ALKYLATE OIL OCCURS IN A HYDROGENATION ZONE OVER A GROUP VIII METAL HYDROGENATION CATALYST AT TEMPERATURES FROM ABOUT 300*F. TO ABOUT 650*F., A HYDROGEN PRESSURE FROM ABOUT 300 TO ABOUT 3000 P.S.IG., A LIQUID HOURLY SPACE VELOCITY FROM ABOUT 0.1 TO ABOUT 3.0 V./V./HR., AND A HYDROGEN-TREAT RATE FROM ABOUT 300 TO ABOUT 2500 S.C.F./BBL. THE HYDROGENATED OIL IS USEFUL AS A UNIQUE COSMETIC BASE OIL.

Inventors

• 👤 Thomas L Ashcraft Jr

Bibliographic Details