METHOD FOR UPGRADING CATALYTIC CRACKING GASOLINE

摘要

Provided is a method for upgrading a catalytic cracking gasoline. The upgrading method comprises the following steps: cutting a catalytic cracking gasoline into a light, medium and heavy gasoline fractions; carrying out an aromatization/hydroisomerization reaction on the medium gasoline fraction in the presence of a catalyst to obtain a desulfurized medium gasoline fraction; and mixing the light gasoline fraction, the desulfurized medium gasoline fraction and the heavy gasoline fraction to obtain an upgraded gasoline; wherein the cutting temperature of the light and medium gasoline fractions is 35°C-60°C, and the cutting temperature of the medium and heavy gasoline fractions is 70°C-160°C. By the method of the present invention, not only the deep desulfurization of the catalytic cracking gasoline can be realized, but also the octane value is significantly increased.