FIELD: process engineering.
SUBSTANCE: invention relates to production of bas oil for lubricants. Base oil for lubricants is produced at first stage whereat stock oil containing normal paraffins C20 or higher is subjected to isomerisation so that content of normal paraffins C20 or higher makes 6-20 wt % of total mass of hydrocarbons C20 or higher in produced reaction product. Lubing oil fraction including hydrocarbons C20 or higher is separated at second stage from first stage reaction products. Lubing oil fraction produced at second stage is separated at third stage to dewaxed oil and paraffin by dewaxing by solvent. Note here that dewaxed oil is used as base oil or subjected to purification by solvent and/or to hydrofining to produce base oil for lubricants.
EFFECT: higher thermal-viscosity properties of base oil.
10 cl, 4 tbl, 4 ex
Authors
Dates
2014-06-20—Published
2010-03-08—Filed