The invention relates to a process for the production of gasoline with a low
sulfur content that comprises at least the following stages:
- a1) at least a selective hydrogenation of diolefins,
- a2) optionally at least one stage that is aimed at increasing the molecular
weight of the light sulfur-containing products that are present in the gasoline,
- b) at least one separation of the gasoline that is obtained in stage
a1 or a2 into two fractions: light gasoline and heavy gasoline,
- c) at least one treatment with heavy gasoline that is separated in stage
b on a catalyst that makes it possible to decompose or to hydrogenate at least
partially the unsaturated sulfur-containing compounds,
- d) at least one treatment of the heavy gasoline that is obtained in
stage c, without eliminating the H2S that is formed during this stage, on a catalyst
that makes it possible to decompose the sulfur-containing compounds and more preferably
the linear and/or cyclic saturated compounds.
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