Process for Treating Gasoline

A process for treating gasoline, comprising:

• 1) contacting a gasoline feedstock with a mixed catalyst and subjecting it to desulfurization and aromatization in the presence of hydrogen to obtain a desulfurization-aromatization product;
• 2) splitting at least a portion of the resulting desulfurization-aromatization product into a light gasoline fraction and a heavy gasoline fraction;
• 3) subjecting at least a portion of the resulting light gasoline fraction to etherification to obtain an etherified oil;
• and
• 4) optionally, mixing at least a portion of the etherified oil with at least a portion of the heavy gasoline fraction to provide a gasoline product,
• wherein the mixed catalyst comprises an adsorption desulfurization catalyst and an aromatization catalyst, and the aromatization catalyst is selected from the group consisting of a fresh aromatization catalyst, a passivated aromatization catalyst, an aged aromatization catalyst, or any combination thereof.

A system for treating gasoline, comprising a desulfurization-aromatization reactor (3), a high pressure separator (5), a full-range gasoline fractionation column (8), and an etherification unit (14), wherein the desulfurization-aromatization reactor (3) is provided with a gasoline feedstock inlet, a hydrogen inlet, and a desulfurization-aromatization product outlet, the full-range gasoline fractionation column (8) is provided with a full-range gasoline inlet, a light gasoline fraction outlet, and a heavy gasoline fraction outlet;

• the desulfurization-aromatization product outlet of the desulfurization-aromatization reactor (3) is in fluid communication with the full-range gasoline inlet of the full-range gasoline fractionation column (8) via the high pressure separator (5);
• and the light gasoline fraction outlet of the full-range gasoline fractionation column (8) is in fluid communication with an inlet of the etherification unit (14),
• wherein a gasoline feedstock (1) is introduced into the desulfurization-aromatization reactor (3) through the gasoline feedstock inlet, and subjected to desulfurization and aromatization therein in the presence of hydrogen to obtain a desulfurization-aromatization product (4);
• the desulfurization-aromatization product (4) is separated in the high-pressure separator (5) into a hydrogen-containing tail gas (6) and a full-range gasoline (7), the full-range gasoline (7) is introduced into the full-range gasoline fractionation column (8) through the full-range gasoline inlet, and subjected to fractionation therein to obtain a light gasoline fraction (9) and a heavy gasoline fraction (10);
• and the light gasoline fraction (9) is introduced into the etherification unit (14), and subjected to etherification therein to obtain an etherified product (15).