FIELD: oil processing. SUBSTANCE: petroleum residues are mixed with polar compound at temperature of phase transition of petroleum residues from structurized to molecular state, then with aqueous solution of catalyst and subjected to hydrogenation at pressure of 5.0-10.0 MPa. Polar compound is used in form of acetone, diethylketone or nitrobenzene in the amount of 0.0010-0.05 mas. EFFECT: higher efficiency. 2 cl, 1 tbl
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