PROCESS FOR PRODUCTION OF HIGH-OCTANE BASE GASOLINE

摘要

A process for producing a high-octane gasoline blending stock in high yield from hydrocarbons having 4 carbon atoms and/or hydrocarbons having 5 carbon atoms recovered as by-products from a catalytic cracking unit or a thermal cracking unit, characterized in that a hydrocarbon mixture containing 50 percent by weight or more of hydrocarbon having 4 carbon atoms and/or hydrocarbons having 5 carbon atoms is brought into contact with a zeolite catalyst so as to be reformed under such reaction conditions that the reformed fraction having 5 or more carbon atoms has:
(1) a content of olefins having 5 or more carbon atoms of 5 to 90 percent by weight;
(2) an aromatic content of 10 to 90 percent by weight;
(3) a benzene content of the aromatics of 10 percent by mass or less; and
(4) a content of aromatics having 8 carbon atoms of the aromatics of 30 percent by mass, and the reformed fraction having 5 or more carbon atoms has a research octane number of 95 or higher and is produced at a yield of 60 percent by mass or more based on the hydrocarbon mixture.