Process for the production of gasolines with low sulfur...

Details Process for the production of gasolines with low sulfur... Process for the production of gasolines with low sulfur...

2005-05-24

2005-05-24

Griffin, Walter D. (Department: 1764)

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

C208S097000, C208S210000, C208S189000, C208S21600R, C208S217000

Reexamination Certificate

active

06896795

ABSTRACT:
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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