FIELD: chemical technology.
SUBSTANCE: invention is designated for detoxification of chloroaromatic hydrocarbons or their mixtures by dechlorination method resulting to preparing benzene. Dechlorination process of chloroaromatic hydrocarbons is carried out by hydropyrolysis at temperature 700-850°C and in the mole ratio hydrogen : chloroaromatic hydrocarbons = (7-10):1 under pressure 0.1-5 MPa. Benzene is separated by rectification and the following recirculation unreacted chloroaromatic hydrocarbons. Formed hydrogen chlorine is adsorbed with alkali solution. Invention provides simplified technology, excluding toxic reagents and solvents in using and absence of toxic waste.
EFFECT: improved processing method.
12 ex
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