CATALYST CONFIGURATION FOR INCREASED HYDROCRACKING ACTIVITY

摘要

Systems and methods are provided for producing an improved product slate during hydrocracking of a feedstock that results in production of naphtha and distillate fuels. The methods can include use of stacked beds and/or sequential reactors so that a feedstock is exposed to suitable catalysts under hydrocracking conditions and aromatic saturation conditions. The catalyst for performing the aromatic saturation process can be a catalyst including a Group VIII noble metal, such as Pt, Pd, or a combination thereof, while the hydrocracking catalyst can include Group VIB and Group VIII non-noble metals.

主权项

1. A method for processing a feedstock to form a distillate product, comprising:
exposing a feedstock having a T50 boiling point of at least about 430° F. (221° C.), a first aromatics content of at least about 5 wt %, and a sulfur content of about 500 wppm or less to a) a hydrocracking catalyst and b) an aromatic saturation catalyst under effective hydrocracking conditions to produce a hydrocracked effluent, the effective hydrocracking conditions being effective for converting at least about 5 wt % to about 20 wt % of the feedstock relative to a conversion temperature of 430° F. (221° C.), the hydrocracked effluent having a second aromatics content, a ratio of the second aromatics content to the first aromatics content being about 0.5 or less, the hydrocracking catalyst comprising at least one Group VIII non-noble metal, at least one Group VIB metal, or a combination thereof, the aromatic saturation catalyst comprising a Group VIII noble metal, wherein the hydrocracked effluent comprises at least a naphtha fuel product fraction and a distillate fuel product fraction.