PROCESS TO PREPARE A LUBRICATING BASE OIL AND A GAS OIL.

摘要

PROCESS TO PREPARE TWO OR MORE LUBRICATING BASE OIL GRADES AND A GAS OIL BY (A) HYDROCRACKING/HYDROISOMERISATING A FISCHER-TROPSCH PRODUCT (1), WHEREIN WEIGHT RATIO OF COMPOUNDS HAVING AT LEAST 60 OR MORE CARBON ATOMS AND COMPOUNDS HAVING AT LEAST 30 CARBON ATOMS IN THE FISCHER-TROPSCH PRODUCT (1) IS AT LEAST 0.2 AND WHEREIN AT LEAST 30 WTOF COMPOUNDS IN THE FISCHER-TROPSCH PRODUCT (1) HAVE AT LEAST 30 CARBON ATOMS, (B) SEPARATING THE PRODUCT OF STEP (A) INTO ONE OR MORE GAS OIL FRACTIONS (7) AND A BASE OIL PRECURSOR FRACTION (8), (C) PERFORMING A POUR POINT REDUCING STEP TO THE BASE OIL PRECURSOR FRACTION (8) OBTAINED IN STEP (B), AND (D) SEPARATING THE EFFLUENT (3) OF STEP (C) IN TWO OR MORE BASE OIL GRADES..