FIELD: petroleum processing.
SUBSTANCE: process comprises following stages: solvent extraction to give dewaxed petroleum product and hydrofining wherein dewaxed petroleum product to hydrogenation with hydrogen in presence of catalyst to produce higher-quality petroleum product. Process also includes evaluation of concentration of polyaromatic hydrocarbons in dewaxed petroleum product and control of at least one of the parameters such as extraction temperature, solvent uptake, and supply of starting petroleum product in accordance with specified concentrations of polyaromatic hydrocarbons.
EFFECT: simplified process.
9 cl, 10 dwg, 2 tbl
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