METHOD OF PRODUCING HIGH-OCTANE MOTOR FUEL COMPONENT Russian patent published in 1998 - IPC

FIELD: gasoline production. SUBSTANCE: straight-run gasoline fraction is subjected to hydrofining and then separated into light and heavy fractions or into light, medium, and heavy fractions, the light one containing 1-15 wt % of C₆-naphtene hydrocarbons and heavy one no more than 5 wt % of summary C₆-hydrocarbons. Light fraction is isomerized at 220-300 C and 1.4-3.5 MPa pressure on catalyst containing, wt %: platinum and/or palladium, 0.3-1.0, or platinum and/or palladium with promoter (manganese or copper), 0.4-1.5; Beta zeolite or mazzite, or mixture of Beta zeolite with ZSM-5, ZSM-8, or ZSM-12 zeolites, or mordenite at weight ratio 1:(0.01-0.25):(30-60); and aluminum oxide, the balance. Heavy fraction is subjected to reforming at 460-520 C and 1.4-3.5 MPa pressure on catalyst containing, wt %: platinum or palladium with promoter (rhenium, manganese, copper), 0.1-6.0; chlorine, 0.7-1,5; and aluminum oxide, the balance. Liquid reforming and isomerization products or liquid isomerization and reforming products and medium fraction are combined in a single hydrogen-containing gas circuit distributing hydrogen- containing gas into isomerization and reforming processes observing molar ratios hydrogen/light fraction (1-5):1 and hydrogen/heavy fraction (4-7): 1. EFFECT: optimized process conditions. 4 cl, 3 tbl, 20 ex