Abstract: The object of the present invention is a fuel composition comprising: (i) from 50 to 79% by mass of a mixture of hydrocarbons comprising: a) from 35 to 55% by mass of aromatic compounds; b) from 30 to 50% by mass of non-cyclic paraffins containing at least 5 carbon atoms; and c) from 5 to 15% by mass of naphthenes; (ii) from 20 to 40% by mass of one or more ethers; and (iii) from 1 to 10% by mass of butane. This composition is useful for supplying a controlled-ignition engine, in automobile vehicles intended for general-public applications or for competition.

Abstract: The object of the present invention is a fuel composition comprising: (i) from 50 to 79% by mass of a mixture of hydrocarbons comprising: a) from 35 to 55% by mass of aromatic compounds; b) from 30 to 50% by mass of non-cyclic paraffins containing at least 5 carbon atoms; and c) from 5 to 15% by mass of naphthenes; (ii) from 20 to 40% by mass of one or more ethers; and (iii) from 1 to 10% by mass of butane. This composition is useful for supplying a controlled-ignition engine, in automobile vehicles intended for general-public applications or for competition.

Abstract: A novel process is described which allows selective hydrodesulphurizing gasoline cuts containing sulphur-containing compounds and olefins. The process employs a catalyst comprising a support selected, for example, from refractory oxides such as aluminas, silicas, silica-aluminas or magnesia, used alone or as a mixture, a group VI metal, preferably Mo or W which may or may not be promoted by a group VIII metal, Co or Ni. The catalyst is characterized by a mean pore diameter of more than 22 nm. The process may comprise one or more steps.

Abstract: Production of gasolines with low sulfur contents from a starting gasoline containing sulfur-containing compounds comprising a stage a) for selective hydrogenation of non-aromatic polyunsaturated compounds present in the starting gasoline, a stage b) for increasing the molecular weight of the light sulfur-containing products that are initially present in the gasoline that enters this stage, a stage c) for alkylation of at least a portion of the sulfur-containing compounds present in the product that originates from stage b), a stage d) for fractionation of the gasoline that originates from stage c) into at least two fractions, one fraction virtually lacking in sulfur-containing compounds, whereby the other contains a larger proportion of sulfur-containing compounds (heavy gasoline), a stage e) for catalytic treatment of the heavy gasoline for transformation of sulfur-containing compounds under conditions for the at least partial decomposition of hydrogenation of these sulfur-containing compounds.

Abstract: A novel process is described which allows selective hydrodesulphurizing gasoline cuts containing sulphur-containing compounds and olefins. The process employs a catalyst comprising a support selected, for example, from refractory oxides such as aluminas, silicas, silica-aluminas or magnesia, used alone or as a mixture, a group VI metal, preferably Mo or W which may or may not be promoted by a group VIII metal, Co or Ni. The catalyst is characterized by a mean pore diameter of more than 22 nm. The process may comprise one or more steps.

Abstract: The invention relates to a treatment process of a sulphur-containing hydrocarbon fraction, comprising the following steps: a) a hydrodesulphurization step of said hydrocarbon fraction to produce a sulphur-depleted effluent, consisting of passing the hydrocarbon fraction mixed with hydrogen over at least one hydrodesulphurization catalyst. b) a step of separation of the partially desulphurized hydrocarbon fraction from the hydrogen introduced in excess, as well as the H2S formed in step a). c) a step of collecting both mercaptans and thiophenic compounds, consisting of placing the partially desulphurized hydrocarbon fraction originating in step b) in contact with an adsorbent comprising at least one element chosen from the group constituted by the elements of groups VIII, IB, IIB and IVA, the adsorbent being used in reduced form in the absence of hydrogen at a temperature above 40° C., the metal content in the reduced form of the adsorbent being above 25% by weight.

Abstract: The invention concerns a process for hydrodesulphurizing a gasoline containing less than 0.1% by weight of sulphur derived from a catalytic cracking unit or other conversion units, said process comprising at least one hydrodesulphurization reactor using a bimetallic catalyst operating at a HSV in the range 0.1 h?1 to 20 h?1, a temperature in the range 220° C. to 350° C. and a pressure in the range 0.1 MPa to 5 MPa, and comprising recycling a fraction of the desulphurized gasoline to the inlet to the hydrodesulphurization reactor with a recycle ratio in the range 0.1 to 3 times the flow rate of the gasoline to be desulphurized.

Abstract: The invention concerns a fixed bed process for capturing arsenic and for desulphurizing a hydrocarbon fraction comprising olefins, sulphur and arsenic, said process comprising a step a) for bringing a capture mass into contact with said hydrocarbon fraction in the presence of hydrogen, the ratio between the flow rate of hydrogen and the flow rate of the hydrocarbon fraction being in the range 50 to 800 Nm3/m3, the operating temperature being in the range 200° C. to 400° C., the operating pressure being in the range 0.2 to 5 MPa. The capture mass comprises molybdenum in a sulphurized form, nickel in a sulphurized form and at least one porous support selected from the group constituted by aluminas, silica, silica-aluminas, titanium oxide and magnesium oxide. The nickel content is in the range 10% to 28% by weight and the molybdenum content is in the range 0.3% to 2.1% by weight.

Abstract: The invention is about a catalyst comprising at least one support, at least one group VIII element, at least one group VIB element and phosphorus, in which the density of group VIB elements per unit surface area of the support is in the range (limits included) 2×10?4 to 18×10?4 of oxides of group VIB elements per m2 of support, in which the molar ratio of phosphorus to the group VIB element is in the range 0.27 to 2.00, and in which the amount of group VIB elements is in the range (limits included) 1% to 20% by weight of oxides of group VIB elements and in which the support has a specific surface area of less than 135 m2/g. The invention is also about a process for hydrodesulphurizing gasoline cuts containing sulphur and olefins in the presence of this catalyst.

Abstract: The present invention relates to a method for treating a feed corresponding to a pyrolysis gasoline, comprising: a) at least one stage of selective hydrogenation of the feed, referred to as HD1, b) fractionating in one or more distillation columns the effluent from stage a) in order to produce at least one light C5 cut, an intermediate C6 or C6-C7 or C6-C8 cut intended for aromatics production, a heavy C7+ or C8+ or C9+ cut intended for gasoline production, c) at least one stage of hydrodesulfurization and deep hydrogenation of the intermediate cut, referred to as HD2, d) at least one stage of alkylation of the heavy C7+, C8+ or C9+ cut consisting of a treatment on an acid catalyst allowing weighting of the sulfur compounds, e) at least one stage of distillation of the effluent from stage d), intended to produce a light fraction that can be directly used as a low-sulfur gasoline base, and a heavy C11+ or C12+ fraction rich in sulfur compounds, used as middle distillate or fuel oil.

Abstract: A process for capturing organometallic impurities comprising at least one of a heavy metal, silicon, phosphorus, and arsenic, contained in a hydrocarbon feed comprising contacting the feed with a capture mass comprising at least one of iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), lead (Pb) and zinc (Zn) deposited on a porous support at least one of aluminas, silica, silica-aluminas, and titanium, or magnesium oxides used alone or as a mixture with alumina or silica-alumina, the metallic element being in the sulphide form with a degree of sulphurization of at least 60%, and in which the feed to be treated is a catalytically cracked gasoline containing 5% to 60% by weight of olefins, 50 ppm to 6000 ppm by weight of sulphur and traces of arsenic in amounts in the range 10 ppb to 1000 ppb by weight.

Abstract: Production of gasolines with low sulfur contents from a starting gasoline containing sulfur-containing compounds comprising a stage a) for selective hydrogenation of non-aromatic polyunsaturated compounds present in the starting gasoline, a stage b) for increasing the molecular weight of the light sulfur-containing products that are initially present in the gasoline that enters this stage, a stage c) for alkylation of at least a portion of the sulfur-containing compounds present in the product that originates from stage b), a stage d) for fractionation of the gasoline that originates from stage c) into at least two fractions, one fraction virtually lacking in sulfur-containing compounds, whereby the other contains a larger proportion of sulfur-containing compounds (heavy gasoline), a stage e) for catalytic treatment of the heavy gasoline for transformation of sulfur-containing compounds under conditions for the at least partial decomposition of hydrogenation of these sulfur-containing compounds.

Abstract: A process for reducing the quantity of sulphur present in a hydrocarbon feed such as a gasoline or a gas oil, comprises: d) bringing said feed containing sulphur-containing compounds into contact with an adsorbent having a selectivity for sulphur-containing compounds under conditions for producing, at the outlet from the contact zone, a desulphurized effluent which is collected, said adsorption being carried out in the liquid phase or in the gas phase; e) gas phase desorption of the sulphur-containing compounds present on said adsorbent using a hydrogen-containing gaseous fluid derived from a hydrodesulphurization zone to obtain a gaseous effluent comprising hydrogen and desorbed sulphur-containing compounds; sending the gaseous effluent from step b) to said hydrodesulphurization zone and desulphurizing it therein.

Abstract: A process for jointly carrying out selective hydrogenation of polyunsaturated compounds into monounsaturated compounds contained in gasolines, and for transforming light sulphur-containing compounds into heavier compounds by reaction with unsaturated compounds, said process employing a supported catalyst comprising at least one metal from group VIB and at least one non-noble metal from group VIII used in the sulphurized form, deposited on a specific support comprising a metal aluminate of the MAl2O4 type with a metal M selected from the group constituted by nickel and cobalt, and comprising bringing the feed into contact with the catalyst at a temperature in the range of 80° C. to 220° C. at a liquid hourly space velocity in the range of 1 h?1 to 10 h?1 and at a pressure in the range of 0.5 to 5 MPa.

Abstract: The invention relates to a process for the desulfurization of gasolines comprising a stage for fractionation of said gasoline into a light fraction that comprises thiophenic compounds such as thiophene or methylthiophenes, and a heavy fraction that concentrates the heaviest aromatic sulfur-containing compounds. The heavy fraction is treated by hydrodesulfurization, while the light fraction is brought into contact with a solid adsorbent that makes it possible to eliminate at least partially said light thiophenic compounds, whereby said adsorbent solid is regenerated by a flow internal to the process.

Abstract: A process for jointly carrying out selective hydrogenation of polyunsaturated compounds into monounsaturated compounds contained in gasolines, and for transforming light sulphur-containing compounds into heavier compounds by reaction with unsaturated compounds employing a supported catalyst, comprising at least one metal from group VIB and at least one non-noble metal from group VIII used in the sulphurized form deposited on a support and having a controlled porosity, and comprising bringing the feed into contact with the catalyst at a temperature in the range of 80° C. to 220° C. at a liquid hourly space velocity in the range of 1 h?1 to 10 h?1 and at a pressure in the range of 0.5 to 5 MPa.

Abstract: A process and the use of a process for desulphurizing a hydrocarbon feed is described which comprises at least one of the following steps: A a step for selective hydrogenation of diolefins present in said initial hydrocarbon feed, in the presence of a catalyst comprising a metal from group VIII of the periodic table on an inert support based on metal oxides, in the presence of a quantity of hydrogen which is in excess with respect to the stoichiometric value necessary for hydrogenating all of said diolefins, the mole ratio between the hydrogen and the diolefins being in the range 1 to 5; b) Extraction, using an appropriate solvent, of said hydrogenated fraction to obtain at least two cuts including: a raffinate comprising the majority of the olefins, paraffins and naphthenes and a reduced quantity of sulphur-containing compounds contained in the initial feed; a heavy fraction containing the heavy aromatic hydrocarbons and the majority of the sulphur-containing compounds contained in the initial feed; C

Abstract: The invention concerns a process for the hydrodesulphurization of gasoline cuts for the production of gasolines with a low sulphur and mercaptans content. Said process comprises at least two hydrodesulphurization steps, HDS1 and HDS2, operated in parallel on two distinct cuts of the gasoline constituting the feed. The flow rate of hydrogen in the hydrodesulphurization step HDS2 is such that the ratio between the flow rate of hydrogen and the flow rate of feed to be treated is less than 80% of the ratio of the flow rates used to desulphurize in the hydrodesulphurization step HDS1.

Abstract: A process for jointly carrying out selective hydrogenation of polyunsaturated compounds into mono unsaturated compounds contained in gasolines, and for transforming light sulphur-containing compounds into heavier compounds by reaction with unsaturated compounds, said process employing a supported catalyst comprising at least one metal from group VIB and at least one non-noble metal from group VIII used in the sulphurized form deposited on a support and having a specific composition and comprising bringing the feed into contact with the catalyst at a temperature in the range of 80° C. to 220° C. at a liquid hourly space velocity in the range of 1 h?1 to 10 h?1 and at a pressure in the range of 0.5 to 5 MPa.

Abstract: The invention relates to a process for the hydrotreatment of an olefinic gasoline comprising at least one selective hydrogenation stage, and generally of simultaneous conversion of mercaptans by weight increase, in which the makeup hydrogen used in this stage or these stages has a reduced CO+CO2 content, preferably comprised between 5 and 200 ppmv. Most often, the CO content is comprised between 1 and 20 ppmv. The process typically makes it possible to hydrorefine an olefinic gasoline by more or less eliminating the diolefins and sulphur compounds.