CO-PRODUCTION OF LUBRICANTS AND DISTILLATE FUELS

摘要

Methods are provided for processing a gas oil boiling range feedstock, such as a vacuum gas oil, in a single reaction stage and/or without performing intermediate separations. The methods are suitable for forming lubricants and distillate fuels while reducing or minimizing the production of lower boiling products such as naphtha and light ends. The methods can provide desirable yields of distillate fuels and lubricant base oils without requiring separate catalyst beds or stages for dewaxing and hydrocracking. The methods are based in part on use of a dewaxing catalyst that is tolerant of sour processing environments while still providing desirable levels of activity for both feed conversion and feed isomerization.

主权项

1. A method for producing a diesel fuel and a lubricant basestock, comprising:
contacting a feedstock having a T95 boiling point of 1100° F. (593° C.) or less and comprising at least 100 wppm of sulfur with a dewaxing catalyst under effective conversion conditions to produce a converted effluent, the effective conversion conditions being effective for at least 25% conversion of the feedstock relative to a conversion temperature of 370° C., the dewaxing catalyst comprising a unidimensional, 10-member ring pore molecular sieve, at least one Group VI metal, at least one Group VIII metal, and a binder having a binder surface area of 100 m2/g or less; contacting at least a portion of the converted effluent with a supported hydrotreating catalyst under effective hydrotreating conditions to produce a product effluent, the hydrotreating catalyst comprising at least one Group VI metal and at least one Group VIII metal; and fractionating the converted, hydrotreated effluent to form at least a distillate fuel product fraction and a lubricant base oil product fraction.