Patent ID: 7270737

Claim:
A process for desulfurization of a gasoline feedstock obtained from a fluidized-bed catalytic cracking (FCC) operation comprising at least the following stages: a) a selective hydrogenation of diolefins present in said initial gasoline feedstock in the presence of a catalyst comprising a metal of group VIII of the periodic table, in the presence of an amount of hydrogen that slightly exceeds the stoichiometric value necessary for hydrogenating all of said diolefins, said selective hydrogenation being conducted under sufficient pressure to keep more than 80% of the gasoline feedstock in the liquid phase, b) an extraction by a suitable solvent of resultant hydrogenated fraction under conditions so as to obtain at least two fractions: a raffinate comprising for the most part olefins, paraffins and naphthenes and a reduced amount of sulfur-containing compounds that are contained in the initial feedstock, a fraction that contains said solvent and the majority of aromatic hydrocarbons and the majority of the sulfur-containing compounds contained in the initial feedstock.