The invention relates to a method for producing low-
sulfur gasoline, which comprises the following steps that: firstly,
gasoline raw materials are fractionated into light and heavy
gasoline fractions, the light gasoline fractions are subjected to alkali washing for removing
sulfur and
alcohol, the heavy gasoline fractions are subjected to
catalytic hydrogenation for removing
sulfur-containing compounds, the heavy gasoline fractions after the hydrogenation desulfuration are introduced into a
counter flow reactor from the middle part, hydrogenation sulfur and
alcohol removal catalysts are filled in positions under a material inlet of the
counter flow reactor,
hydrogen-rich gas is introduced from the bottom of the reactor, a part of heavy gasoline fractions are vaporized into
gas phase ingredients and
liquid phase ingredients, the
liquid phase ingredients flow from top to bottom and are in count flow contact with
hydrogen gas on the catalysts for carrying out hydrogenation sulfur and
alcohol removal reaction, the
liquid phase ingredients after the sulfur and alcohol removal flow out from the bottom of the reactor, the
gas phase ingredients and other gas are discharged out from the top of the reactor, the
gas phase ingredients after the condensation are mixed with the liquid phase ingredients discharged from the bottom of the
tower and the light gasoline fractions subjected to the alkali washing for removing sulfur and alcohol to obtain gasoline products. When the method provided by the invention is adopted, the gasoline product with the sulfur and
alcohol sulfur content lower than 3mug / g can be producted, and simultaneously, the total
sulfur content of the gasoline product is reduced.