Process comprising two gasoline hydrodesulphurisation steps with intermediary elimination of H2S

摘要

the invention relates to a process for the production of low sulphur gasoline comprising at least three stages: a first stage in which the sulfur compounds present in the gas are at least partially converted into h2s and sulphur compounds, saturatedthe second step to remove the h2s from gas produced in the first step and a third step in which the saturated sulfur compounds remaining in the gas are converted into h2s. the process according to the invention comprises a step of pru00e9tr possibly also implement to hydrogenate this species the diolefins of the load by the first step.