Abstract: The present invention relates to an oligomerization process implemented in a sequence of at least two gas/liquid reactors, placed in series, comprising at least one gas headspace recycle loop. The process more particularly relates to the oligomerization of ethylene to linear alpha-olefins such as 1-butene, 1-hexene, 1-octene or a mixture of linear alpha-olefins.

Abstract: The present invention relates to a device, a column and a method for radial separation or reaction, wherein the adsorption chamber (9) has a charging height (H3) greater than the height of the distribution duct (6) and the height of the collecting duct (8), and the upper wall (2) of the adsorption chamber (9) comprises at least one inlet (16) for washing solvent.

Abstract: The present invention relates to a genetic tool comprising at least two different nucleic acids allowing the transformation, by homologous recombination, of a bacterium of the genus Clostridium, typically of a solventogenic bacterium.

Abstract: The present invention is a method of determining the average wind speed in a vertical plane by use of a LiDAR sensor (2), comprising performing measurements (MES), constructing a measurement model (MOD M) and a wind model (MOD V). Then an adaptive Kalman filter (KAL) is used to determine the wind speed (v), and determining the average wind speed in the vertical plane under consideration (RAWS).

Abstract: The present invention relates to a process for treating a plastics pyrolysis oil, comprising: a) selective hydrogenation of said feedstock in the presence of at least hydrogen and of at least one selective hydrogenation catalyst; 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; c) hydrocracking of said hydrotreated effluent in the presence of at least hydrogen and of at least one hydrocracking catalyst, to obtain a hydrocracked effluent; d) separation of the hydrocracked 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 present invention relates to a process for treating an SRF and/or plastics pyrolysis oil, comprising: a) optionally, selective hydrogenation of the feedstock; b) hydroconversion in an ebullated bed, in an entrained bed and/or in a moving bed, to obtain a hydroconverted effluent; c) separation of the hydroconverted effluent in the presence of an aqueous stream, to obtain a gaseous effluent, an aqueous liquid effluent and a liquid hydrocarbon effluent; d) fractionation of the liquid hydrocarbon effluent to obtain at least one gas stream and a cut with a boiling point of less than or equal to 385° C. and a cut with a boiling point above 385° C.; e) hydrotreatment of said cut comprising compounds with a boiling point of less than or equal to 385° C. to obtain a hydrotreated effluent; f) separation to obtain at least a gaseous effluent and a hydrotreated liquid hydrocarbon effluent.

Abstract: The invention relates to a process for oligomerization of ethylene, preferably for selective trimerization of ethylene to hex-1-ene, comprising simultaneously bringing ethylene into contact with the components of a catalytic composition based on chromium.

Abstract: A hydrotreating catalyst comprising an active phase containing at least one group VIB metal and at least one group VIII metal, and a porous support containing alumina and at least one spinel MAl2O4 where M is chosen from nickel and cobalt, characterized in that: the molar ratio (r1) between said group VIII metal and said group VIB metal of the active phase is between 1.0 and 3.0 mol/mol; the molar ratio (r2) between said metal M of the porous support and said group VIII metal of the active phase is between 0.3 and 0.7 mol/mol; the molar ratio (r3) between the sum of the contents of the metal M and of the group VIII metal relative to the content of group VIB metal is between 2.2 and 3.0 mol/mol.

Abstract: The present invention relates to a process for producing alcohols comprising: a. an IBE-type fermentation step in at least one bioreactor (R1) in the presence of a natural strain microorganism, and fed at least with an aqueous solution (1) of C5 and/or C6 sugars and a recycled acetone stream (3), in order to produce fermentation gases and a fermentation broth containing fermentation products; b. a step of recovering the fermentation products, in order to obtain a stream of fermentation products (2); c. a step of treating the stream of fermentation products comprising an acetone separation section in order to produce at least an acetone effluent (3) and an aqueous alcohol effluent (4); d. a step for recycling at least a fraction of the acetone effluent (3) from step c) to step a).

Abstract: The present invention relates to a process for producing butadiene from ethanol, in two reaction steps, comprising a step a) of converting ethanol into acetaldehyde and a step b) of conversion into butadiene, said step b) simultaneously implementing a reaction step and a regeneration step in (n+n/2) fixed-bed reactors, n being equal to 4 or a multiple thereof, comprising a catalyst, said regeneration step comprising four successive regeneration phases, said step b) also implementing three regeneration loops.

Abstract: The invention concerns a method for the photocatalytic reduction of carbon dioxide carried out in the liquid phase and/or in the gas phase under irradiation using a photocatalyst comprising a support made from alumina or silica or silica-alumina and nanoparticles of molybdenum sulfide or tungsten sulfide having a band gap greater than 2.3 eV, said method comprising the following steps: a) bringing a feedstock containing carbon dioxide and at least one sacrificial compound into contact with said photocatalyst, b) irradiating the photocatalyst with at least one source of irradiation producing at least one wavelength smaller than the width of the band gap of said photocatalyst so as to reduce the carbon dioxide and oxidise the sacrificial compound in the presence of said photocatalyst activated by said source of irradiation, in such a way as to produce an effluent containing, at least in part, C1 or above carbon-containing molecules, different from CO2.

Abstract: The present invention relates to a method of controlling a wind turbine by automatic online selection of a controller that minimizes the wind turbine fatigue. The method therefore relies on an (offline constructed) database (BDD) of simulations of a list (LIST) of controllers, and on an online machine learning step for determining the optimal controller in terms of wind turbine (EOL) fatigue. Thus, the method allows automatic selection of controllers online, based on a fatigue criterion, and switching between the controllers according to the measured evolution of wind condition.

Abstract: The present invention relates to a cleaning apparatus (100) for metal smallware, comprising: a washing chamber (1) apt to receive a solvent and at least one batch of metal smallware soiled with lubricant and configured to carry out a washing cycle to remove at least part of said lubricant from said batch of metal smallware soiled with lubricant by means of said solvent and; suction means (2) connected to said washing chamber (1) and configured to carry out a discharge cycle by sucking said gaseous mixture comprising air and solvent from said washing chamber (1); a main absorption column (4) having a first side (41) and a second side (42) opposite each other, and wherein said first side (41) is hydraulically connected to said suction means (2) so as to receive said gaseous mixture comprising air and solvent and said second side (42) is hydraulically connected to a supply duct (3) so as to receive an absorption liquid from the latter.

Abstract: The invention relates to a photocatalytic carbon dioxide reduction method carried out in liquid and/or gas phase under irradiation, using a photocatalyst containing a first semiconductor, particles comprising one or more metallic-state elements M, and a second semiconductor SC, wherein the method is carried out by contacting a feedstock containing the CO2 and at least one sacrificial compound with the photocatalyst, then irradiating the photocatalyst such that the CO2 is reduced, and oxidising the sacrificial compound in order to produce an effluent containing at least in part C1 or above carbon molecules other than CO2.

Abstract: The invention relates to an oxygen carrier solid, its preparation and its use in a method of combustion of a hydrocarbon feedstock by active mass chemical-looping oxidation-reduction, i.e. chemical-looping combustion (CLC). The solid, which is in the form of particles, comprises an oxidation-reduction active mass composed of metal oxide(s) dispersed in a ceramic matrix comprising at least one oxide with a melting point higher than 1500° C., such as alumina, and has, initially, a specific macroporous texture. The oxygen carrier solid is prepared from an aqueous suspension containing precursor oxide grains for the ceramic matrix that have a specific size, by a spray-drying technique.

Abstract: Device and process for converting a feedstock of aromatic compounds, in which the feedstock is notably treated using a fractionation train (4-7), a xylenes separating unit (10) and an isomerization unit (11), and in which a pyrolysis unit (13) treats a second hydrocarbon-based feedstock, produces a pyrolysis effluent feeding the feedstock, and produces a pyrolysis gas comprising CO, CO2 and H2; a WGS water gas shift reaction section (50) suitable for treating the pyrolysis gas and for producing a WGS gas enriched in CO2 and in hydrogen; a CO2 aromatization reaction section (52) suitable for: at least partly treating the WGS gas to produce a hydrocarbon effluent comprising aromatic compounds, and feeding the feedstock with the hydrocarbon effluent.

Abstract: The invention concerns a process for converting a hydrocarbon feed, said process comprising the following steps: a) a step of hydrocracking the feed in the presence of hydrogen; b) a step of separating the effluent obtained from step a); c) a step of precipitating sediments, in which the heavy fraction obtained from the separation step b) is brought into contact with a distillate cut at least 20% by weight of which has a boiling point of 100° C. or more for a period of less than 500 minutes, at a temperature in the range 25° C. to 350° C., and at a pressure of less than 20 MPa; d) a step of physical separation of the sediments from the heavy fraction obtained from step c); e) a step of recovering a heavy fraction having a sediment content, measured using the ISO 10307-2 method, of 0.1% by weight or less.

Abstract: The present invention relates to an NCC process and an apparatus for producing light olefins and aromatics, wherein the fraction comprising ethane and/or propane (12) from the cracking effluent is sent at least partly into a steam cracking furnace (19), fed with steam (20), to produce a steam cracking effluent (21) comprising ethylene and/or propylene.

Abstract: The present invention concerns a zeolitic adsorbent agglomerate comprising at least one zeolite of faujasite type comprising barium and/or potassium, of porosity between 25% and 45%, and having a standard deviation ? of crystal size distribution in said agglomerate of less than 0.30 ?m. The invention also concerns the use of the zeolitic adsorbent agglomerate for the separation of hydrocarbon mixtures, and the process for separating hydrocarbon mixtures using said zeolitic adsorbent agglomerate.

Abstract: The invention concerns a process for the treatment of a hydrocarbon feed, said process comprising the following steps: a) a hydrotreatment step, in which the hydrocarbon feed and hydrogen are brought into contact over a hydrotreatment catalyst, b) an optional step of separating the effluent obtained from the hydrotreatment step a), c) a step of hydrocracking at least a portion of the effluent obtained from step a) or at least a portion of the heavy fraction obtained from step b), d) a step of separating the effluent obtained from step c), e) a step of precipitating sediments, f) a step of physical separation of the sediments from the heavy liquid fraction obtained from step e), g) a step of recovering a liquid hydrocarbon fraction having a sediment content, measured using the ISO 10307-2 method, of 0.1% by weight or less.