Abstract: The invention provides a process to prepare very low sulphur, very low aromatic hydrocarbon fluids having a boiling range in the range of from 100 to 400° C. and a boiling range of not more than 80° C., comprising at least the two successive steps of —deep hydrodesulphurating of middle distillate down to less than 10 ppm sulphur, and —catalytic hydrogenating the desulphurized middle distillates of preceding step at a temperature from 80 to 180° C. and at a pressure from 60 to 160 bars.

Abstract: Process for the fluidized-bed catalytic cracking of a weakly coking feedstock having a Conradson carbon residue equal to or less than 0.1% by weight and a hydrogen content equal to or greater than 12.7% by weight, comprising at least a step of cracking the feedstock, a step of separating/stripping the effluents from the coked catalyst particles and a step of regenerating said particles, the process being characterized in that at least one coking, carbonaceous and/or hydrocarbonaceous effluent having a content of aromatic compounds of greater than 50% by weight, comprising more than 20% by weight of polyaromatic compounds, is recycled to homogeneously distributed and weakly coked catalyst, before regeneration, in order to adjust the delta coke of the process.

Abstract: The present invention relates the use of a pump in a loop reactor for the production of polyethylene, as well as a reactor comprising such pump and methods for producing polyolefin by means of such reactor. The pump according to the invention is characterized in that it is an axial flow impeller circulation pump, wherein the impeller comprises 6 blades and wherein the pump is fixed on a spring supported frame. Use of the pump according to the present invention allows for preparation of homogeneous polyethylene products that meet high quality standards from the complicated ethylene polymerization mixtures while at the same time being produced with low energy consumption.

Abstract: The invention relates to a system for the electronic management of a photovoltaic generator, said system comprising a plurality of n static converters (11, 12, 13) connected in parallel, each converter (11, 12, 13) being electrically connected to at least one photovoltaic cell (10) of the generator. The number of converters connected is varied by varying the photovoltaic power, by comparing the generated power to thresholds P1, P2, . . . , Pn?1 after a time delay t. The invention also relates to a generator comprising said system and to the associated control method.

Abstract: A process for preparing polyolefin in a polymerization loop reactor can include feeding olefin monomer, liquid diluent, polymerization catalyst, optionally hydrogen, and optionally olefin co-monomer into the polymerization loop reactor. The process can include polymerizing the olefin monomer and optionally the olefin co-monomer to produce a polyolefin slurry in the polymerization loop reactor. The polymerization loop reactor can include a plurality of interconnected pipes defining a flow path for the polyolefin slurry. The polymerization loop reactor can include one or more settling legs provided on at least one horizontal part of the interconnected pipes. The circulation velocity of the polyolefin slurry inside at least one horizontal part of the interconnected pipes provided with one or more settling legs can be reduced by at least 20% and at most 60% compared to a circulation velocity inside a remainder of the polymerization loop reactor.

Abstract: The invention relates to a method for upgrading heavy liquid fractions resulting from oil refining, by combustion in a fluidized-bed chemical looping process. The method according to the invention allows energy to be produced by oxidizing totally the heavy liquid feeds while allowing direct capture of the CO2 emitted in the combustion fumes. The method according to the invention also allows a synthesis gas to be produced.

Abstract: The present invention relates to a lubricant composition comprising a dispersant of high molecular weight and metal nanoparticles. The lubricant composition according to the invention simultaneously has good stability and good anti-flaking properties.

Abstract: The present invention relates to caps and closures comprising a specific propylene random copolymer, obtained by polymerization with a metallocene-based polymerization catalyst.

Abstract: The present disclosure relates to the use of at least one modified alkylphenol-aldehyde resin as additive for improving the oxidation and/or storage stability of a motor fuel or liquid hydrocarbon-containing fuel composition. The modified alkylphenol-aldehyde resin can be obtained by Mannich reaction of an alkylphenol-aldehyde condensation resin with at least one aldehyde and/or one ketone having from 1 to 8 carbon atoms, preferably from 1 to 4 carbon atoms; and at least one hydrocarbon-containing compound having at least one alkylmonoamine or alkylpolyamine (alkylamine) group, having between 1 and 30 carbon atoms. The alkylphenol-aldehyde condensation resin itself can be obtained by condensation of at least one alkylphenol substituted with at least one linear or branched alkyl group having from 1 to 30 carbon atoms, preferably a monoalkylphenol, with at least one aldehyde and/or one ketone having from 1 to 8 carbon atoms, preferably from 1 to 4 carbon atoms.

Abstract: An assembly for loading a refinery and/or petrochemical reactor (100) with solid particles, comprising a dispensing device (110) for loading the reactor with solid particles in a relatively uniform manner, a system (200) for supplying the dispensing device, comprising a flexible sleeve (140) connected to a solid particle tank (130) and to the dispensing device, and a control system (300) comprising a blocking device (310) for blocking the particles flowing in the flexible sleeve, adjacent to a portion (141) of the flexible sleeve and capable, when activated, of moving the walls of the flexible sleeve in such a way as to reduce a cross section of said sleeve at said portion, and an actuating device (350) for actuating the blocking device located at a distance from the blocking device.

Abstract: An electronic management system for a photovoltaic generator is disclosed herein. The, the electronic management system comprises a plurality of static microconverters, each microconverter being electrically connected to one or more photovoltaic cells, the one or more photovoltaic cells forming a portion of a whole of the cells of the generator, a reconfiguration module adapted for transmitting energy flows from said microconverters towards a load, and a central electronic unit adapted for controlling a modification of the energy flows transmitted by said at least one reconfiguration module.

Abstract: According to the invention, in order to initialize the use of a multipoint geostatistical technique (MPS), the method takes information, which was collected in wells drilled in the area of the subsoil to be modeled, into account. Particularly, the method takes inter-well connectivity data into account, which indicate one or more groups of cells of a reservoir grid that are located along a plurality of wells and between which hydrodynamic communications have been observed. For each of said groups, compatible thumbnail images are searched for in a training image used in the MPS technique. Said thumbnail images have, in the training image, facies that enable the flows between the cells of the group. The thumbnail images are applied onto the reservoir grid in order to initialize MPS simulation while ensuring that the inter-well connectivity constraints will be respected.

Abstract: The present invention discloses an expandable vinyl aromatic polymer comprising: a) a matrix of a vinyl aromatic polymer, b) 1-10% by weight, calculated with respect to the polymer (a), of a blowing agent embedded in the polymeric matrix, c) 0.1 to 5% by weight, calculated with respect to the polymer (a), of talcum having a D50 particle size, measured by sedigraph (ISO 13317-3), of between 2.3 and 5 ?m and a BET specific surface area, measured according to DIN 66131/2, of between 4.2 and 9.5 m2/g, d) 0.1 to 6% by weight, calculated with respect to the polymer of carbon black with a BET specific surface area, measured according to ASTM D-6556, of between 9 and 65 m2/g, e) 0.1 to 1% by weight, calculated with respect to the polymer (a), of polyethylene wax homogeneously distributed in the polymeric matrix.

Abstract: The present invention relates to the use of a catalyst preparation system for the preparation of a diluted catalyst slurry. In particular, the invention relates to a catalyst preparation system comprising a mixing vessel for mixing a particulate catalyst and a liquid hydrocarbon diluent. According to the invention, diluted catalyst slurry is prepared in a mixing vessel comprising a rotatable axial impeller system comprising at least two double-bladed hubs. The invention also relates to a process for preparing diluted catalyst slurry for use in the preparation of a particulate polyethylene product in a loop reactor with the catalyst preparation system as described herein.

Abstract: The present relates to a process for optimizing the recovery of unreacted monomers from a polymerization process, wherein said process comprises the steps of recovering a fluid stream generated by the separation of the polyolefin product from the polymerization fluid comprising unreacted monomers and optionally comonomers; contacting said fluid stream in an absorption zone with a scrub liquid comprising at least one C4-10 hydrocarbons, thereby absorbing at least a portion of the unreacted monomers in said scrub liquid; and withdrawing from said absorption zone (i) a vapor overhead comprising light gas and (ii) an absorber bottoms scrub liquid comprising said C4-10 hydrocarbons and said unreacted monomer; thereby recovering said unreacted monomer in said absorber bottoms scrub liquid comprising said C4-10 hydrocarbons.

Abstract: An electrical machine (10) has three phase windings (12). Each phase winding (12) is connected to a respective current source (18). Each current source 18 provides alternating current to the corresponding winding (12). The current source 18 is connected independently to the respective winding (12). The electrical angles of the phase windings (12) are so arranged that none of the phase windings (12) has a zero torque angle which coincides with a zero torque angle of another phase winding (12).

Abstract: Disclosed is a method of modelling a subsurface volume, and a corresponding computer program and apparatus. The method comprises defining a regular planar grid of regularly arranged locations in the two dimensions substantially parallel to the surface, and calculating a plurality of one dimensional arrays, each one dimensional array extending from a different one of the regularly arranged locations, in the direction from surface to subsurface. Each of the one dimensional arrays comprises a plurality of one dimensional cells, wherein the cells are delineated according to actual geological features of the subsurface volume.

Abstract: This invention relates to the field of multilayer articles having reinforced structural properties prepared by rotational molding wherein the external and internal skin layers are prepared from polyethylene resin and the intermediate layer is prepared from foamed polyethylene.

Abstract: Modified alkylphenol-aldehyde resins include one or more alkylamines, having preferably at least one primary amine type group as well as their use for improving the flow properties of motor fuels and hydrocarbon fuels, such as in particular jet fuel, gas oil, fuel oil domestic, heavy fuel oil.

Abstract: An apparatus for displaying electronic advertisements or the like is provided herein. In one embodiment, the apparatus may include a first planar body having a first electronic display and a second planar body having a second electronic display. The apparatus may include a connector for connecting the first and second planar bodies, and at least one controller component operatively coupled to the first and second electronic displays. The apparatus may include at least one alarm component attached to at least one of the first and second planar bodies, and at least one movement detection component operatively coupled to the at least one alarm component. The apparatus may include at least one power component operatively coupled to the first and second electronic displays and the at least one alarm component.