FIELD: by-product-coking industry.
SUBSTANCE: claimed method includes hydrofining of by-product-coke resin with subsequent hydrodealkylation. In hydrofining step hydrogen donators such as naphthalene, anthracene, and phenanthrene hydro- or alkyl-derivatives, containing in coal-far resin, are obtained. Dealkylation is carried out using the said hydrogen donators. Quantitative content of hydrogen donators is equal the same of benzene, naphthalene, alkyl-derivatives, and other hydrodealkylated compounds (15-30 wt.% as calculated to raw material). Hydrofining is carried out under hydrogen pressure of 2-5 MPa, at 280-4000C, feed space velocity of 0.5-2 h-1, in hydrogen/feed ratio of 500-1000 l/kg in flowing system.
EFFECT: finished product of improved quality.
4 cl, 2 tbl, 2 ex
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