Process for producing a gasoline with a low sulphur and mercaptans content

摘要

The present application concerns a process for the treatment of a gasoline containing sulphur-containing compounds and olefins, with the following steps:a) a step for hydrodesulphurization of said gasoline in order to produce an effluent which is depleted in sulphur by passing the gasoline mixed with hydrogen over at least one hydrodesulphurization catalyst;b) a step for separating the partially desulphurized gasoline from the hydrogen introduced in excess as well as the H₂S formed during step a);c) a catalytic step for sweetening desulphurized gasoline obtained from step b), which converts residual mercaptans into thioethers via an addition reaction with the olefins.