Patent ID: 7435334
Filing Date: 2008-10-14
Classification: C10G

Abstract:
1. A process for the production of a gasoline with a low sulfur content starting from an initial gasoline that comprises olefins, thiophene compounds and mercaptans comprising the following successive stages: a) a treatment of at least one fraction of the initial gasoline under conditions of alkylation of the thiophene compounds by the olefins, said alkylation being conducted in contact with an acid catalyst, b) a treatment of at least one fraction of the effluent that is obtained from stage a) under conditions of addition of olefins to the mercaptans in contact with a catalyst different from the catalyst in step (a) and comprising at least one group VIII metal, and a hydrogen flow rate of 0.1 l/l to 20 l/l, expressed in normal liters of hydrogen per liter of gasoline, c) a distillation of the effluent that is obtained from stage b) under conditions of obtaining at least two fractions, including: