Abstract: This invention relates to a process for treatment of a gasoline that comprises diolefins, olefins and sulfur-containing compounds including mercaptans, consisting of a stage for treatment of the gasoline in a distillation column (2) comprising at least one reaction zone (3) including at least one catalyst that makes it possible to carry out the addition of mercaptans to the olefins that are contained in the gasoline that distills toward the top of the catalytic column.

Abstract: A process for the concomitant production of at least two hydrocarbon cuts with low sulphur contents from a mixture of hydrocarbons having a total sulphur content in the range 30 to 10000 ppm by weight, by a) hydrodesulphurization in the presence of hydrogen and a hydrodesulphurization catalyst; b) separating hydrogen sulphide from the partially desulphurized effluent obtained from a); c) hydrodesulphurization of the partially desulphurized mixture obtained from b) in the presence of hydrogen and a hydrodesulphurization catalyst, the temperature of the second hydrodesulphurization being higher than that of the first hydrodesulphurization; d) fractionating the desulphurized mixture obtained in c) into at least two desulphurized hydrocarbon cuts.

Abstract: This invention relates to a process for treatment of a gasoline that comprises diolefins, olefins and sulfur-containing compounds including mercaptans, consisting of a stage for treatment of the gasoline in a distillation column (2) comprising at least one reaction zone (3) including at least one catalyst that makes it possible to carry out the addition of mercaptans to the olefins that are contained in the gasoline that distills toward the top of the catalytic column.

Abstract: This invention relates to a process for hydrogenation of benzene contained in a catalytic reformate, in which: The hydrogen that is present in the catalytic reformate is separated from the remainder of the reformate with separation means, A light benzene-enriched fraction is separated from the heavy reformate, The light reformate that contains the benzene is brought into contact with a nickel-based hydrogenation catalyst at a temperature of between 90° C. and 150° C., a VVH of between 0.5 and 10, and with at least one portion of hydrogen that is obtained during the separation stage of the hydrogen at the top of the separator tank and used at the output pressure of said separator.

Abstract: A process for the treatment of a gasoline comprising diolefins, olefins and sulphur-containing compounds including mercaptans: a) demercaptanization by addition of at least a portion of the mercaptans onto the olefins by bringing the gasoline into contact with at least one first catalyst; b) treatment of the gasoline obtained from a) with hydrogen in a distillation column comprising at least one reaction zone including at least one second catalyst. The operating conditions and the second catalyst of b) are selected such that in the distillation column, separation of the gasoline obtained from a) into a light gasoline fraction and a heavy gasoline fraction is carried out simultaneously with a reaction for thioetherification and selective hydrogenation of the diolefins of a gasoline fraction obtained from a) by contact with the second catalyst.

Abstract: A process for treatment of gasoline comprising diolefins, olefins and sulphur-containing compounds including mercaptans. The process comprises: a) demercaptanization by addition of a portion of the mercaptans onto the olefins by bringing gasoline into contact with a first catalyst; b) separating the gasoline obtained from a) into a light gasoline cut and a heavy gasoline cut; c) introducing a stream of hydrogen and the second heavy gasoline cut obtained from b) into a distillation column comprising a reaction zone including a second catalyst in the sulphide form comprising a second support, a metal from group VIII and a metal from group VIb, to decompose the sulphur-containing compounds to form H2S; d) evacuating at a point located above the reaction zone at least one final light gasoline fraction comprising H2S, and at a point located below the reaction zone a desulphurized heavy gasoline fraction from the catalytic distillation column.

Abstract: A process for the concomitant production of at least two hydrocarbon cuts with low sulphur contents from a mixture of hydrocarbons having a total sulphur content in the range 30 to 10000 ppm by weight, by a) hydrodesulphurization in the presence of hydrogen and a hydrodesulphurization catalyst; b) separating hydrogen sulphide from the partially desulphurized effluent obtained from a); c) hydrodesulphurization of the partially desulphurized mixture obtained from b) in the presence of hydrogen and a hydrodesulphurization catalyst, the temperature of the second hydrodesulphurization being higher than that of the first hydrodesulphurization; d) fractionating the desulphurized mixture obtained in c) into at least two desulphurized hydrocarbon cuts.

Abstract: This invention relates to a process for hydrogenation of benzene contained in a catalytic reformate, in which: The hydrogen that is present in the catalytic reformate is separated from the remainder of the reformate with separation means, A light benzene-enriched fraction is separated from the heavy reformate, The light reformate that contains the benzene is brought into contact with a nickel-based hydrogenation catalyst at a temperature of between 90° C. and 150° C., a VVH of between 0.5 and 10, and with at least one portion of hydrogen that is obtained during the separation stage of the hydrogen at the top of the separator tank and used at the output pressure of said separator.