| 摘要 |
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 |
