A process for desulfurizing gasoline includes such steps as reaction between thiol and diolefin in gasoline in fixed-bed reactor to generate S-contained compound with higher boiling point, separating out low-sulfure light fraction from the gasoline in distilling tower, hydrodesulfurizing or selective hydrodesulfurizing in catalytic distilling tower to convert said S-contained compound and other sulfide to hydrogen sulfide, discharging the hydrogen sulfide, residual hydrogen and part of gasoline fraction from the tower top, and discharging the heavy components of gasoline from tower still. Its advantages are less consumption of hydrogen and high output rate of liquid. |