Catalyst hydrotreating and dewaxing process

Details Catalyst hydrotreating and dewaxing process Catalyst hydrotreating and dewaxing process

1989-01-12

1990-04-03

McFarlane, Anthony

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With preliminary treatment of feed

208 18, 208111, C10G 6504, C10G 6512

Patent

active

049137972

ABSTRACT:
The present invention is directed to a cascade catalytic hydrotreating/dewaxing process, wherein a hydrocarbon feedstock containing waxy components is treated. The hydrotreating phase precedes the dewaxing phase in order to remove contaminants, such as nitrogen and sulfur, from the feedstock to prolong the life of the catalyst used in the subsequent dewaxing step. A conventional hydrotreating catalyst is used. The dewaxing catalyst is a Zeolite Beta catalyst. The cascade process is conducted with or without interstage gas separation. The treatment occurs in the same or in separate reactors. The ratio of hydrotreating catalyst to dewaxing catalyst is greater than 1:2. This sequence of treatments enhances distillate yields and lowers processing and capital costs.

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