Abstract: A process for treating a plastic feedstock, including a dissolution step involving placing the plastic feedstock in contact with a dissolution solvent, at between 100° C. and 300° C. and pressure of between 1 and 20.0 MPa abs, to dissolve at least a portion of the polymers of the plastic feedstock and to obtain a crude polymer solution. Also, extraction by placing the crude polymer solution in contact with an extraction solvent, at between 100° C. and 300° C., a pressure between 1 and 20.0 MPa abs and at a mass ratio between the mass flow rate of the extraction solvent and the mass flow rate of the crude polymer solution between 0.05 and 20.0, to obtain an extracted polymer solution and a spent solvent. Furthermore, recovering the polymers to obtain a solvent fraction and a purified polymer fraction.

Abstract: The present invention relates to a process for the oligomerization of an olefinic feedstock characterized in that a solvent fraction resulting from a downstream separation step is cooled and recycled.

Abstract: The present invention relates to an oxygen carrier solid in particulate form, to the preparation thereof and to the use thereof in a chemical looping redox process such as chemical looping combustion (CLC). The oxygen carrier solid comprises, in the oxidized form thereof, an Fe content X of between 5% and 39.3%, an Mg content Y of between 3% and 21.5%, and an Al content Z of between 57% and 92%, the contents X, Y and Z being expressed respectively as % by weight of Fe2O3, MgO and Al2O3 relative to the total weight of the oxygen carrier solid, with X+Y+Z=100% and with Y?28.33-0.645X. The carrier comprises an active redox mass comprising Fe2O3, and a ceramic matrix within which said active redox mass is dispersed, said ceramic matrix comprising a sub-stoichiometric spinel of formula MgaAlbO4.

Abstract: The invention relates to a method for capturing organometallic impurities in a gasoline-type hydrocarbon feedstock containing sulfur compounds and olefins, wherein said feedstock is brought into contact with hydrogen and a capture mass comprising a nickel-based active phase, and a mesoporous and macroporous alumina substrate having a bimodal distribution of mesopores and wherein: —the volume of mesopores having a diameter greater than or equal to 2 nm and less than 18 nm corresponds to between 10 and 30% by volume of the total pore volume of said substrate; —the volume of mesopores with a diameter greater than or equal to 18 nm and less than 50 nm corresponds to between 30 and 50% by volume of the total pore volume of said substrate.

Abstract: The present invention is a wind farm control method, wherein a reinforcement learning method (RL) is implemented in a decentralized manner (for each wind turbine). The reward (REC) is calculated according to a wake propagation delay (DEL). Thus, the reward is truly representative of the effect of the last action (previous yaw control for example).

Abstract: The present invention relates to a device and to a method for detecting at least the presence of gas hydrate crystals (10) formed by a fluid. The device according to the invention comprises: a polychromatic light source (2) likely to emit a radiation (20) at least in the visible spectrum; a body (3, 3?, 3?) comprising a reflecting surface (4) of predefined color in contact with the fluid; means for measuring a light intensity (5) as a function of wavelength, so arranged as to detect a radiation re-emitted in a non-specular manner (21) by reflecting surface (4) when it is illuminated by polychromatic light source (2); means for detecting at least the presence of hydrate crystals (10) from the light intensity measured as a function of wavelength and of at least one predefined threshold.

Abstract: The present invention relates to a catalyst composition in the form of a capsule, having walls made of solid material which define a closed volume which contains a liquid phase comprising at least one ionic liquid of formula Q+A?, wherein Q+ is an organic cation and A? is an anion, and in which a Brönsted acid HB is dissolved.

Abstract: Process for producing a light gasoline having a sulfur content of less than 10 ppm by weight, with respect to the total weight of the light gasoline, starting from a gasoline containing sulfur compounds, olefins and diolefins, which process includes a) a stage of selective hydrogenation to hydrogenate the diolefins and a reaction for increasing the molecular weight of a part of the sulfur compounds; b) a stage separating the effluent obtained from stage a) into a gaseous fraction, a light gasoline cut and a heavy gasoline cut, stage b) being carried out in a fractionation column containing n plates, n being an integer of 20 or more, the first plate being the reboiler and the plate “n” being the condenser, wherein the light gasoline cut is withdrawn from the fractionation column at the plate “n-i”, with i being 1 to 10.

Abstract: The invention describes a catalyst comprising at least one hydro/dehydrogenating element chosen from the group formed by the elements from group VIB and from group VIII of the periodic table, alone or as a mixture, and a support comprising at least one zeolite and one amorphous silica-alumina, wherein the zeolite has an acid site distribution index (ASDI) of greater than 0.15 and a density of acid sites (determined by H/D exchange) of between 0.05 and 1 mmol/g, and wherein the support has a pore volume, measured by nitrogen porosimetry, developed within the pores with a diameter of between 6 nm and 11 nm, of less than 0.5 ml/g, a grain density, measured by mercury displacement under a pressure of 0.003 MPa, of greater than 0.93 g/ml, and a tapped packing density (TPD) of greater than 0.5 g/ml and less than 0.65 g/ml.

Abstract: Liquid-liquid extraction column (1) comprising points for feedstock injection (2), washing (3) and backwashing (4), two withdrawal points (5, 6), trays (Pi) located along the column and defining 2 to 30 zones each comprising at least two trays, the n zones comprising: at least one extraction zone Zi comprising the zones from Z1 to Zx, x being greater than or equal to 1, and at least one backwash zone comprising the zones from Zx+1 to Zn, n being greater than x; in which the trays of the same zone have the same number of holes per perforated tray; in which, when x>1, the number of holes per perforated tray of the zones Zi increases when i increases; and when x=1, said number of holes of the backwash zone is less than/greater than than that of the zone Z1.

Abstract: The invention relates to a composition predominantly comprising BHET and exhibiting a nitrogen content of less than or equal to 10 ppm by weight, the nitrogen content being determined according to a chemiluminescence method, with a stream of ozone at 35 cm3/min, after oxidative combustion of a sample in liquid form, prepared by diluting the composition in tetrahydrofuran, at a temperature of 1050-1100° C. and in the presence of an oxidizing mixture composed of oxygen and helium, and using a calibration curve made using a standard of diphenylamine diluted in toluene.

Abstract: Liquid-liquid extraction column (1) comprising injection points for feedstock (2), for washing (3) and for backwashing (4), two withdrawal points (5, 6), trays (Pi) located along the column and defining 2 to 30 zones each comprising at least two trays, the n zones comprising: at least one extraction zone Zi comprising the zones from Z1 to Zx, x being greater than or equal to 1, and at least one backwash zone comprising the zones from Zx+1 to Zn, n being greater than x; in which the trays of one and the same zone exhibit one and the same height H of inter-tray space (10); in which, when x>1, the height H of the zones Zi increases when i increases; and, when x=1, the height H of the at least one backwash zone is less than the height H of zone Z1.

Abstract: Method for treating a partially desulphurised sulphur-containing hydrocarbon feedstock from a preliminary hydrodesulphurisation step in the presence of a catalyst comprising an active phase comprising a group VII metal and a mesoporous and macroporous alumina support comprising a bimodal distribution of mesopores, wherein: —the volume of mesopores having a diameter greater than or equal to 2 nm and less than 18 nm is between 10 and 30% by volume of the total pore volume of the support; —the volume of mesopores having a diameter greater than or equal to 18 nm and less than 50 nm is between 30 and 50% by volume of the total pore volume of the support; —the volume of macropores having a diameter greater than or equal to 50 nm and less than 8000 nm is between 30 and 50% by volume of the total pore volume of the support.

Abstract: The present invention relates to a catalytic composition in the form of what is known as a Pickering emulsion, said composition comprising a first non-aqueous liquid phase L1 comprising hydrocarbon compounds, within which droplets of a second liquid phase L2 are stabilized by solid particles, said second liquid phase L2 comprising at least one ionic liquid of formula Q+A?, Q+ being an organic cation and A? being an anion, and in which a Brønsted acid HB is dissolved.

Abstract: The invention relates to a process for producing an aqueous solution of 5-hydroxymethylfurfural (5-HMF), comprising: a step a) of placing a feedstock comprising 5-HMF and dimethyl sulfoxide (DMSO) in contact with an intermediate aqueous back-extract obtained from step c), to obtain an aqueous mixture, a step b) of liquid-liquid extraction of the aqueous mixture with a stream of extraction solvent, to produce an aqueous raffinate and an intermediate organic extract, a step c) of back-washing of the intermediate organic extract with an aqueous solvent, to produce the intermediate aqueous back-extract and an organic raffinate, a step d) of liquid-liquid back-extraction of the organic raffinate obtained on conclusion of step c) with an aqueous stream, to produce an organic effluent and an aqueous back-extract of 5-HMF.

Abstract: A process for treating a gasoline containing sulfur compounds, olefins and diolefins comprises step a) bringing into contact the gasoline, hydrogen and a hydrodesulfurization catalyst, in at least one reactor. In step b) effluent from a), hydrogen, and a hydrodesulfurization catalyst are brought into contact in at least one reactor. In step c) effluent from b) is sent to a separation drum operating at a pressure of between 1.0 and 2.0 MPa to obtain a gaseous fraction containing H2S and hydrogen and a liquid fraction containing desulfurized gasoline and a fraction of dissolved H2S. In step d), the liquid fraction is sent to a stabilization column to obtain at the top a stream comprising residual H2S and C4- hydrocarbon compounds and at the bottom a stabilized gasoline. In step e), the gaseous fraction is recycled at least in part to at least one of steps a) and/or b).

Abstract: The present invention relates to a novel CLC plant and to a novel CLC method employing a cyclone oxidation reactor to oxidize the oxygen carrier.

Abstract: The present invention relates to a process for trapping mercaptans contained in a sulfur-containing hydrocarbon feedstock which is optionally partially desulfurized, resulting from a step of catalytic hydrodesulfurization, at a temperature of between 40° C. and 250° C., a pressure of between 0.2 MPa and 5 MPa, at an hourly space velocity, defined as the volume flow rate of feedstock at the inlet per volume of trapping mass, of between 0.1 h?1 and 50 h?1, in the presence of a trapping mass comprising an active phase based on at least one group VIII, IB or IIB metal, and a porous oxide or oxide mixture, the active metal of which has been activated beforehand by reduction and then passivated for the loading thereof by carbon dioxide treatment.

Abstract: The present invention relates to a cyclone for gas/solid separation in a plant for chemical looping combustion of a hydrocarbon feedstock using reactors operating as circulating fluidized beds. The novel cyclone has a specific inlet pipe of which a lower wall and one of the lateral walls are inclined and which has at least one auxiliary-gas injection means at the lower wall, making it possible to reduce the deposition of solid matter at the inlet of the cyclone, to optionally carry out chemical reactions inside the cyclone, and to improve the efficiency of the cyclone.

Abstract: The present invention relates to a process for the production of a polyester, comprising: a) a stage of esterification of a mixture comprising a monomer A of formula 1 and a monomer B of formula 2 or a monomer A of formula 1, a monomer B of formula 2 and isophthalic acid, in which R1 is chosen from the group consisting of: —(CH2)n—, with n an integer of between 2 and 4, —(CH2—CHR2)—, with R2 chosen from linear or branched alkyl groups comprising between 1 and 6 carbon atoms (C1-C6) and a phenyl group, then b) a stage of polycondensation.