Manufacture of naphthenic type lubricating oils

Details Manufacture of naphthenic type lubricating oils Manufacture of naphthenic type lubricating oils

1979-09-24

1981-02-24

Levine, Herbert

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

208 18, 208 92, 209111, C10G 4100

Patent

active

RE0305294

ABSTRACT:
A process for making naphthenic type lubricating oils from a low VI waxy crude which comprises distilling said low VI waxy crude to 500.degree. to 650.degree. F. at atmospheric pressure to separate distillable fractions therefrom, subjecting the residue to a vacuum distillation at about 25 to about 125 mm Hg absolute pressure to obtain one or more gas oil fractions, optionally hydrotreating said gas oil fractions in the presence of a Ni/Mo catalyst at 550.degree. to 650.degree. F., 0.25 to 1.0 LHSV, and 700-1500 psig, and catalytically dewaxing said distillates in the presence of a H.sup.+ form mordenite catalyst containing a Group VI or Group VIII metal at 550.degree. to 750.degree. F., 500 to 1500 psig and 0.25 to 5.0 LHSV, to obtain said naphthenic type oils having pour points of from about -60.degree. to +20.degree. F.

REFERENCES:
patent: 3902988 (1975-09-01), Bennett et al.
patent: 3926786 (1975-12-01), Coleman et al.
patent: 3929616 (1975-12-01), Mead et al.

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