System for producing high quality gasoline by catalytic hydrocarbon recombination

A system for preparation of a high quality gasoline through recombination of catalytic hydrocarbon, comprising a fractionator, a light gasoline hydrogenation reactor, a heavy gasoline hydrogenation reactor and an extractor, wherein a feeding material is fed into the extractor and separated into light gasoline and heavy gasoline in the fractionators, an upper part of the fractionator is connected with the light gasoline hydrogenation reactor through a light gasoline pipeline, and the light gasoline from the fractionator is fed into the light gasoline hydrogenation reactor through the light gasoline pipeline;

• a lower part of the fractionator is connected with the heavy gasoline hydrogenation reactor through a heavy gasoline pipeline, and the heavy gasoline from the fractionator is fed into the heavy gasoline hydrogenation reactor through the heavy gasoline pipeline to be hydrogenated;
• the hydrogenated heavy gasoline is fed into the extractor, extracted and separated into hydrogenated aromatic hydrocarbon and raffinate in the extractor;
• the extractor is operatively connected to the light gasoline hydrogenation reactor, the hydrogenated aromatic hydrocarbon is discharged from a lower part of the extractor and blended with hydrogenated light gasoline from the light gasoline hydrogenation reactor to form the high quality gasoline.