Process for the manufacture of lubricating base oils

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

1985-10-11

1986-11-11

Metz, Andrew H.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With preliminary treatment of feed

208 18, 208 36, 208254H, 208254R, C10G 6704, C10G 6714

Patent

active

046221298

ABSTRACT:
A process is disclosed for the manufacture of lubricating base oils from nitrogen-containing distillates and/or deasphalted oils by subjecting them to a catalytic hydrotreatment which may be followed by a dewaxing treatment, wherein distillates and/or deasphalted oils having a nitrogen content which numerically expressed exceeds the value f.multidot.P.sub.H2 .multidot.S.sub.v.sup.-1, wherein f is a constant relating to the viscosity of the final base oil, P.sub.H2 represents the hydrogen partial pressure in bar applied in the catalytic hydrotreatment and S.sub.v represents the weighted hourly space velocity in t/m.sup.3 .multidot.h at which the catalytic hydrotreatment is carried out, are subjected to a preceding solvent extraction.

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