Process for the manufacture of lubricating oils

Details Process for the manufacture of lubricating oils Process for the manufacture of lubricating oils

1986-12-22

1988-03-01

Sneed, Helen M. S.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With preliminary treatment of feed

208 18, 208 89, 208111, 208114, 208211, 208212, C10G 6704

Patent

active

047284153

ABSTRACT:
The present invention provides for a process for reducing the pour point of a hydrocarbon feedstock containing nitrogen- and sulfur-containing impurities. The hydrocarbon feedstock is contacted with hydrogen and a hydrotreating catalyst under hydrotreating conditions whereby a portion of the nitrogen- and sulfur-containing compounds are converted to hydrogen sulfide and ammonia. A portion of the hydrotreater effluent is then passed to a dewaxing zone and contacted with hydrogen under dewaxing conditions in the presence of a dewaxing catalyst containing a borosilicate molecular sieve on silica-alumina-containing matrix.

REFERENCES:
patent: 3403092 (1968-09-01), Rausch
patent: 3929616 (1975-12-01), Mead et al.
patent: 4229282 (1980-10-01), Peters et al.
patent: 4434047 (1984-02-01), Hensley, Jr. et al.
patent: 4437975 (1984-03-01), Gillespie et al.
patent: 4515680 (1985-05-01), Hettinger et al.
patent: 4560469 (1985-12-01), Hopkins et al.
patent: 4563266 (1986-01-01), Hopkins et al.
patent: 4636299 (1987-01-01), Unmuth et al.

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