METHOD OF PRODUCTION OF HIGH-OCTANE GASOLINE Russian patent published in 1995 - IPC

FIELD: petroleum chemistry. SUBSTANCE: method consists in distillation of hydrocarbon raw material with separation of and/or hexane fraction, and/or heptane fraction, and/or octane fraction which are brought in contact with catalyst based on zeolite, type ZSM including ZSM-5 and that modified with elements of the 2nd, 6th and 8th groups of the Periodic Table. The products of contacting are separated into gaseous and liquid products. Liquid products are mixed with remaining fraction of raw material. Gaseous products are subjected to pyrolysis. Pyrolysis products or pyrogas preliminarily separated from them are mixed with fractions separated from raw material and the mixture thus obtained is subjected to contacting. EFFECT: enhanced efficiency. 6 cl, 5 tbl