FIELD: petroleum chemistry.
SUBSTANCE: claimed method includes thermal hydrodealkylation of alkylaromatic compounds (e.g. toluene, benzene-toluene-xylene fraction of pyrocondensate, etc.) at increased temperature and pressure followed by recycling of un-reacted compounds. As additional raw materials phenol or other oxygen-containing aromatic fractions from various manufactures (e.g. phenol fraction from cookery production, phenol resin, acetophenon fraction or p-cumylphenol fraction from phenol production, etc.) are added to starting material in amount of 1-40 mass % based on mass of main raw materials. Process is carried out at 620-740°C, pressure of 2-5 MPa, 100 % hydrogen consumption of 700-1200 nm3/m3 of raw materials.
EFFECT: increased benzene yield, utilization of waste from various manufactures.
6 cl, 1 tbl, 1 dwg, 2 ex
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