PROCESS FOR DESULPHURIZING OLEFINIC GASOLINES, COMPRISING AT LEAST TWO DISTINCT HYDRODESULPHURIZATION STEPS

摘要

The invention concerns a process for the hydrodesulphurization of gasoline cuts for the production of gasolines with a low sulphur and mercaptans content. Said process comprises at least two hydrodesulphurization steps, HDS 1 and HDS 2 , operated in parallel on two distinct cuts of the gasoline constituting the feed. The flow rate of hydrogen in the hydrodesulphurization step HDS 2 is such that the ratio between the flow rate of hydrogen and the flow rate of feed to be treated is less than 80% of the ratio of the flow rates used to desulphurize in the hydrodesulphurization step HDS 1.