PROCESS FOR PRODUCTION OF HIGH-OCTANE BASE GASOLINE

摘要

A process for producing high-octane base gasoline in high yield from C4 hydrocarbons and/or C5 hydrocarbons recovered as by-products from a catalytic cracker or a thermal cracking plant, characterized in that a hydrocarbon mixture containing at least 50 wt% of C4 hydrocarbons and/or C5 hydrocarbons is reformed by the contact with a zeolite catalyst under such reaction conditions that the formed fraction having five or more carbon atoms has (1) a content of olefins having five or more carbon atoms of 5 to 90 wt%, (2) an aromatic content of 10 to 90 wt%, (3) a benzene content of the aromatics of 10wt% or below, and (4) a C8 aromatics content of the aromatics of 30wt% or above and in that the formed fraction having five or more carbon atoms has an octane value of 95 or above as determined by the research method and the yield thereof is 60 wt% or above based on the starting hydrocarbon mixture.