HIGH-OCTANE GASOLINE PRODUCTION PROCESS Russian patent published in 2000 - IPC

FIELD: gasoline production. SUBSTANCE: straight-run gasoline fraction with upper boiling limit 160 C is hydrofined and then fractionated to yield fractions: initial boiling point to 85 C and 85 C to dry point. The former is subjected to isomerization to yield isomerizate and the latter is subjected to catalytic reforming. 10 to 60 wt % of catalytic reforming gasoline is separated into following fractions: initial boiling point to 85 C, 85-140 C, 140-200 C, and 200 C to dry point. To form desired product, indicated catalytic reforming fractions are combined in following proportions, respectively, %: up to 15, up to 25, 10-45, and up to 4, resulting mixture being supplemented by 1-20% of isomerizate and balanced with catalytic reforming gasoline. Thus compounded product is further supplemented by up to 40 % of alkylbenzene and/or up to 15% of straight-run fraction from initial boiling point to 85 C, and/or up to 20% of catalytic cracking gasoline, and/or up to 15% of ethers of C{1}-C{5}-alcohols or of their mixtures with C{1}-C{4}-alcohols. EFFECT: enabled production of environmentally safe lead-free high-octane gasolines. 2 cl, 2 tbl, 4 ex