FIELD: technological processes.
SUBSTANCE: present invention relates to a method of regenerating spent oil by mixing preheated oil up to 80-100 °C with an aqueous solution of carbamide and subsequent separation of recovered oil, mixing the oil is carried out with an aqueous solution consisting of 30-50 wt% carbamide, 4-6 wt% monoethanolamine and 2-4 wt% aluminium chloride, taken in amount of 0.5-1.0 vol% of the volume of waste oil.
EFFECT: improved quality of recovered oil.
1 cl, 2 tbl
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Authors
Dates
2016-10-27—Published
2014-12-15—Filed