FIELD: chemistry.
SUBSTANCE: method for dewaxing petroleum products is realised by mixing material with 0.05-0.25 wt % surfactant, thermal treatment of the obtained mixture, cooling to dewaxing temperature, followed by separation of paraffin hydrocarbons in a constant electric field. The surfactant used is a depressant which is a product of reaction of stearic acid and polyethylene polyamines in weight ratio of 4.5:1.0, respectively. 0.05-0.15 wt % higher fatty alcohols of the C10-18 fraction are further added to the petroleum product as a dewaxing activator.
EFFECT: high output of dewaxed diesel fuel and low turbidity point thereof.
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