FIELD: oil refining.
SUBSTANCE: invention relates to the field of oil refining, in particular to a method of regenerating waste industrial oils, and can be used at metallurgical and other enterprises using lubricants. Method involves oil settling, filtration and centrifugation. After removal of mechanical impurities, carbon dioxide extraction is carried out, for this purpose, through heated to 310-340 °C oil is passed preheated to 310-340 °C carbon dioxide under pressure of 0.3-0.7 atm, providing extraction of oil fractions with subsequent distillation of their vapours. Then vapours of oil fractions are cooled to condensation temperature in range of 40-50 °C.
EFFECT: increasing the efficiency of the process of regeneration of waste industrial oils while reducing costs.
1 cl, 3 dwg, 2 tbl
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