| 简介 |
FIELD : chemistry.
SUBSTANCE : invention relates to a method of aromatising non-aromatic hydrocarbons contained in a hydrogenated fraction of a C6-C8 pyrolysis condensate. The method involves reaction of starting material with a metal-containing zeolite aromatisation catalyst at high temperature, and is characterised by that the starting material is a hydrogenated fraction of a C6-C8 pyrolysis condensate containing not less than 70 wt % aromatic hydrocarbons and 8-30 wt % non-aromatic hydrocarbons. The aromatisation catalyst used is a zeolite having entrance window diameter 5.1-7.3Ǻ, having molar ratio of silicon to aluminium equal to 25-140, modified with metals selected from : zinc, gallium, silver, rhodium, platinum, rare-earth elements, as well as combinations thereof.
EFFECT : invention increases output of the end product - benzene and reduces output of light hydrocarbon fractions when processing pyrolysis condensate.
7 cl, 42 ex, 4 tbl |
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