Abstract: The present invention relates to a gas/liquid reactor for the oligomerization of gaseous ethylene, comprising a gaseous ethylene injection device and a liquid injection device, said injection devices advantageously being arranged so that the injection of the liquid can bring about a reduction, by shear, of the size of the ethylene bubbles, during the injection of the gaseous ethylene. The gas/liquid reactor according to the present invention may be used for any gaseous olefinic feedstock injected into a liquid phase.

Abstract: A selective hydrogenation catalyst comprising an active phase based on nickel and molybdenum, and a porous support consisting of alumina and/or nickel aluminate, characterized in that the molar ratio between the nickel and the molybdenum is greater than 2.5 mol/mol and less than 3.0 mol/mol.

Abstract: A process for preparing a powder support containing alumina and silica or their derivatives for a catalyst of a Fischer-Tropsch type reaction, including stage (a) of preparing a first reactant containing an alumina compound or precursor including a reaction for peptization of an alumina compound or precursor in the presence of an acid, to form solid particles in suspension, stage (b) of preparing a second reactant based on silicic acid and/or on a compound or precursor of silicic acid, including a controlled aging treatment of the silicic acid targeted at its polymerization up to a degree of conversion of the silicic acid of at most 70%, stage (c) of mixing the two reactants in a mixer, and the pH of the first reactant is adjusted to a value not exceeding a given maximum pH threshold.

Abstract: The present invention relates to a process for treating a plastics pyrolysis oil, comprising: a) hydrogenation of said feedstock in the presence of at least hydrogen and of at least one hydrogenation catalyst at an average temperature of between 140 and 340° C., the outlet temperature of step a) being at least 15° C. higher than the inlet temperature of step a), to obtain a hydrogenated effluent; b) hydrotreatment of said hydrogenated effluent in the presence of at least hydrogen and of at least one hydrotreatment catalyst, to obtain a hydrotreated effluent, the average temperature of step b) being higher than the average temperature of step a); c) separation of the hydrotreated effluent in the presence of an aqueous stream, at a temperature of between 50 and 370° C., to obtain at least one gaseous effluent, an aqueous liquid effluent and a hydrocarbon-based liquid effluent.

Abstract: The invention relates to a process for treating a feedstock comprising a plastics pyrolysis oil and a feedstock derived from renewable sources, comprising: a) optionally, a step of selective hydrogenation of the feedstock comprising a plastics pyrolysis oil, b) a hydrodemetallization of the feedstock comprising a plastics pyrolysis oil or of the effluent of step a), c) a hydrotreatment of said effluent obtained from step b), and in which said feedstock derived from renewable sources is introduced in step a) and/or in step b) and/or in step c), the weight ratio between the flow rate of the feedstock comprising the plastics pyrolysis oil and the flow rate of feedstock derived from renewable sources introduced being between 0.05 and 20, d) a separation in the presence of an aqueous stream.

Abstract: A cleaning apparatus for metal smallware is provided having a washing chamber configured to carry out a washing cycle and suction means connected to the washing chamber and configured to carry out a discharge cycle, a main absorption column having a first side and a second side opposite each other, wherein the first side is hydraulically connected to the suction means and the second side is hydraulically connected to a supply duct. In particular, the main absorption column is configured to cause an interaction between a gaseous mixture supplied by the suction means and an absorption liquid supplied by the supply duct to perform chemical absorption of a solvent present in the gaseous mixture having air and solvent, in the absorption liquid, and reduce the concentration of solvent in the gaseous mixture having air and solvent.

Abstract: A catalytic material comprising at least one group VIB metal at least partly in sulfide form, at least one group IVB metal at least partly in sulfide form, and an electrically conductive support wherein said group VIB metal is chosen from molybdenum and/or tungsten, said group IVB metal is chosen from titanium, zirconium and/or hafnium.

Abstract: The present invention relates to a process for producing olefins from a hydrocarbon feedstock 11 having a sulfur content of at least 0.1 weight %, an initial boiling point of at least 180° C. and a final boiling point of at least 600° C.

Abstract: The invention relates to a method for hydrodesulfurization of a sulfur-containing olefinic gasoline cut wherein said gasoline cut, hydrogen and a catalyst comprising an alumina support obtained by dehydration of an aluminum hydroxide or oxyhydroxide at a temperature of between 400° C. and 1200° C. and for a time of between 0.1 seconds and 5 seconds, at least one metal from group VIB, at least one metal from group VIII, and phosphorus are brought into contact, the molar ratio between the phosphorus and the metal from group VIB being between 0.2 and 0.35.

Abstract: The present invention relative to a process for the hydroconversion of a feedstock including a fraction of less than 50% by weight of plastic and/or SRF pyrolysis oil (102) and a heavy hydrocarbon fraction (101) containing a portion of at least 50% by weight with a boiling point of at least 300° C. and containing sulfur and nitrogen. The hydroconversion uses one or more ebullated bed or hybrid ebullated-entrained bed reactors (20), and preferably two successive hydroconversion steps. The process according to the invention allows the production of higher-quality, lower-boiling materials, for example for the production of fuels or chemical compounds for the petrochemical industry, with improved yields of certain cuts and while allowing facilitated processing of the hydroconverted products in downstream steps such as fixed-bed hydrotreatment and while maintaining good stability of the unconverted fraction.

Abstract: The present invention relates to a process for treating a lignocellulosic biomass pretreated beforehand (1), said process comprising the extraction of the free sugars from said pretreated biomass using an alcoholic or aqueous-alcoholic extraction solution (2), so as to obtain a liquid phase enriched in free sugars, called liquor (3), and a solid phase depleted in free sugars, called must (4).

Abstract: Catalyst containing an active phase which contains a group VIB element, at least one group VIII element and phosphorus, and a support containing alumina, the catalyst being characterized in that at least 80% by weight of the group VIB elements, of the group VIII elements and of the phosphorus are distributed in the form of a crust at the periphery of said support, the thickness of said crust being between 100 and 1200 ?m, the content of group VIB element being between 1% and 8% by weight relative to the total weight of the catalyst, the content of group VIII element being between 0.5% and 5% by weight relative to the total weight of the catalyst, and the content of phosphorus being between 0.2% and 3% by weight relative to the total weight of the catalyst, and the support having a specific surface area of between 100 m2/g and 250 m2/g.

Abstract: The present invention relates to a process for treating an effluent obtained from an oligomerization step in a vaporization step. In particular, the oligomerization step is a step for dimerization of ethylene to 1-butene with a nickel-based catalytic system.

Abstract: The present invention relates to a method of characterizing organic hydrocarbon compounds contained in a solid deposit of a geothermal plant, by measuring a quantity of organic hydrocarbon compounds released by a solid deposit sample during heating by pyrolysis according to a temperature sequence such that: from a temperature (T1) ranging between 50° C. and 120° C., the temperature of a rock sample is raised to a temperature (T2) ranging between 180° C. and 220° C. This temperature (T2) is then maintained for a predetermined duration. The temperature of the sample is raised to a temperature (T3) ranging between 330° C. and 370° C. This temperature (T3) is maintained for a predetermined duration. The temperature of the sample is thereafter raised to a temperature (T4) ranging between 630° C. and 670° C.

Abstract: The present invention is a method for exploiting a sedimentary basin using an updated stratigraphic model based on updating a stratigraphic model according to measurements performed in a basin.

Abstract: A selective hydrogenation catalyst that can be obtained by the process comprising at least the following steps: a) the alumina support is brought into contact with at least one organic additive; b) the alumina support is brought into contact with at least one nickel metal salt, the melting point of said metal salt of which is between 20° C. and 150° C.; c) the solid mixture obtained on conclusion of steps a) and b) is heated with stirring; d) the catalyst precursor on conclusion of step c) is dried; e) a step of heat treatment of the dried catalyst precursor obtained on conclusion of step d) is carried out.

Abstract: The invention relates to a process for preparing a catalyst based on a zeolite of AFX structural type and on at least one transition metal, comprising at least the following steps: i) mixing, in an aqueous medium, of at least one source of silicon in oxide form SiO2, of at least one source of aluminium in oxide form Al2O3, of an organic nitrogen-comprising compound R, of at least one source of at least one alkali metal and/or alkaline-earth metal M until a homogeneous precursor gel is obtained; ii) hydrothermal treatment of said precursor gel to obtain a crystallized solid phase, iii) at least one ion exchange with a transition metal; iv) heat treatment. The invention also relates to the catalyst capable of being obtained or directly obtained by the process and to the process for the selective reduction of NOx employing the catalyst.

Abstract: The invention describes a mass for scavenging mercaptans which is particularly suitable for the treatment of olefinic gasoline cuts containing sulfur such as gasolines resulting from catalytic cracking. The scavenging mass comprises an active phase based on group VIII, IB or IIB metal particles which is prepared by a step of bringing a porous support into contact with a metal salt of said group VIII, IB or IIB metal and a step heating the resulting mixture to a temperature above the melting point of said metal salt. The invention also relates to a process for using said scavenging mass for the adsorption of mercaptans.

Abstract: The invention relates to a process for the liquid-phase separation of xylose from a mixture of C5 and C6 sugars comprising at least xylose and glucose, by adsorption of xylose on a zeolitic adsorbent based on FAU-type zeolite crystals having an Si/Al atomic ratio of less than or equal to 1.5 comprising barium, wherein (a) said mixture is brought into contact with said adsorbent, by liquid chromatography, to obtain a glucose-enriched liquid phase and a xylose-enriched adsorbed phase; and (b) on the one hand, said glucose-enriched liquid phase is recovered and said phase adsorbed on said adsorbent is desorbed by means of a desorption solvent in order to recover the xylose on the other hand.

Abstract: The present invention is a method of characterizing a route (T) travelled by a user. The method comprises a step of locating and timestamping measurement during the ride (MES), then determining a modified discrete Fréchet distance (DFM) between the measured route and previous routes. Finally, the modified discrete Fréchet distance (DFM) is used to characterize the route to be characterized (T).