Abstract: A meter calibration apparatus includes a fluid intake conduit, a fluid discharge conduit, and a calibration cylinder connected in fluid communication with the intake and discharge conduits, the calibration cylinder defining a chamber. The apparatus further includes a piston slidable within the cylinder and defining first and second chamber portions on opposite sides of the piston, and at least one valve having an intake port in fluid communication with the intake conduit, a first flow port with a first flow conduit extending therefrom and connected to the first chamber portion for providing fluid communication therebetween, and a second flow port with a second flow conduit extending therefrom and connected to the second chamber portion for providing fluid communication therebetween.

Abstract: A method is disclosed that utilizes specific techniques, based upon empirical study, to significantly increase the ability of a trainee to remain focused on the training materials and subject matter and actually learn and retain the training subject matter. More specifically, the present invention utilizes audio and/or visual (e.g., a personal computer) elements, with a strict set of rules which must be followed regarding sentence length, narrators, and underlying music within the dialog to create a specific rhythmic “feel” to the training. As a result of using such techniques, significantly improved results over prior art training methods can be obtained.

Abstract: The invention concerns a boiler adapted to oxycombustion (30) comprising a combustion chamber (31), a water heater (33) and a vaporizer (38, 40), wherein the combustion chamber includes at least partly the water heater (33). The invention also concerns an oxycombustion method with hot water generation, comprising heating cold water with the oxycombustion flame into a heated fluid. The inventive method is advantageously implemented in the inventive device.

Abstract: The invention relates to a method for increasing the pressure of a liquid/gas multiphase fluid, and a method for compressing a gaseous fluid, comprising: (b1) entrainment of the gaseous fluid using a motive liquid, to obtain a pressurized mixture of gas and motive liquid; (b2) separation of the pressurized mixture obtained in the preceding step in order to obtain, on the one hand, a compressed gas, and on the other hand, an auxiliary liquid. The invention further relates to devices for this purpose. Application to the production of hydrocarbons.

Abstract: The present invention concerns a catalyst for the production of high density polyethylene, by homopolymerising ethylene or copolymerising ethylene and an alpha-olefinic comonomer comprising 3 to 10 carbon atoms, prepared by the steps of: a) selecting a silica support with a specific surface area larger than 300 m2/g; b) treating the silica support with a titanium compound, in order to introduce titanium into the support, or with an aluminium compound, in order to introduce aluminium into the support; c) either treating the titanated silica support with an aluminum compound, in order to introduce aluminum into the titanated silica support, or treating the aluminated silica support with a titanium compound, in order to introduce titanium into the aluminated silica support; d) depositing a chromium compound on the titanated and aluminated silica support to form a catalyst; e) activating the catalyst of step d) under air in a fluidised bed at a temperature of from 600 to 800° C.

Abstract: A reactor apparatus includes at least one reaction capillary having a lumen for receiving a reactant to undergo a reaction, and a magnetron for irradiating reactant contained in at least a portion of the capillary with microwaves. A method of micro-reacting a reactant includes providing a capillary, and irradiating the reactant in the capillary with microwaves to facilitate a chemical reaction in the capillary by which the reactant is converted into a desired product.

Abstract: A process for hydrogenating unsaturations in polymers, the process comprising contacting at least one polymer having unsaturations with a catalyst comprising at least one Group Ia, Ib, IIb, VIb, VIIb or VIII metal on a support of an alkaline earth metal silicate having a surface area of at least 30 m2/g at a temperature of from 50 to 250° C. and a pressure of from 5 to 150 bar.

Abstract: The invention concerns a device wherein the diffusion chamber (6) comprises, between its upstream end and its downstream end, in the direction of the fluid flow, at least an insert (12) formed by an annular ring having an external diameter identical to the internal diameter of the chamber, said annular ring being arranged perpendicular to the axis of the supply conduit and projecting towards the inside part of the chamber from the side wall(s) thereof, to form a lateral obstacle to the fluid flow, the solid surface of the insert (12) being sufficient to generate in the upstream part of the chamber a pressure higher than that of the downstream part.

Abstract: The present invention relates to a Ziegler-Natta catalyst for olefin polymerization and a method for polymerization of olefin using the same. Specifically, the invention relates to a Zeigler-Natta catalyst for olefin polymerization, which is produced by a method comprising the step of reacting a transition metal compound in which the transition metal having an oxidation number of 4 or more is selected from Groups IV, V or VI of the Periodic table and two or more aryloxy ligands are bound to the transition metal, with an organomagnesium compound, to reduce said transition metal compound to a reduced form in which the transition metal has an oxidation number of 3, and a method for polymerization of olefin using said catalyst.

Abstract: This invention discloses a process for the preparation of polyethylene resins having a narrow molecular weight distribution that comprises the steps of: (i) providing a first high molecular weight metallocene-produced linear low density polyethylene (mLLDPE) resin having a density of from 0.920 to 0.940 g/cm3 and a MI2 of from 0.05 to 2 g/10 min; (ii) providing a second high density polyethylene (HDPE) prepared either with a Ziegler-Natta or with a metallocene catalyst, said polyethylene having a density ranging from 0.950 to 0.970 g/cm3 and a MI2 of from 0.5 to 10 g/10 min; (iii) physically blending together the first and second polyethylenes to form a polyethylene resin having a narrow molecular weight distribution, a density ranging from 0.940 to 0.955 g/cm3 and a MI2 of from 1 to 2 g/10 min.

Abstract: The present invention refers to a metallocene catalyst component for producing polyolefins according to formula (I) R?s (CpRn)g (CpRn) M Q3-g (I) or according to formula (II) R?(CpRn)MeXQ (II) wherein—each Cp is a substituted or unsubstituted cyclopentadienyl ring with the bridge-head position of at least one of the cyclopentadienyl rings being occupied by a silicon atom;—each R is the same or different and is hydrogen or a hydrocarbyl radical such as alkyl, alkenyl, aryl, alkylaryl or arylalkyl radical containing from 1 to 20 carbon atoms or two carbon atoms are joined together to form a C4-C6 ring; —R? is a structural bridge between two Cp rings;—M is a group IIIB, IVB, VB or VIB metal;—Q is a hydrocarbyl radical such as aryl, alkyl, alkenyl, alkylaryl or arylalkyl radical having from 1 to 20 carbon atoms, a hydrocarboxy radical having from 1 to 20 carbon atoms or a halogen and can be the same or different from each other;—s is 0 or 1, g is 0, 1 or 2 and s is 0 when g is 0, n is 4 when s is 1 and n is 5 whe

Abstract: The present invention relates to catalysts of transition metal complexes of N-heterocyclic carbenes, their methods of preparation and their use in chemical synthesis. The synthesis, ease-of-use, and activity of the compounds of the present invention are substantial improvements over in situ catalyst generation. Further, the transition metal complexes of N-heterocyclic carbenes of the present invention may be used as precatalysts in metal-catalyzed cross-coupling reactions.

Abstract: A homogeneous blend of a low density polyethylene with a metallocene-catalysed polyethylene having a density of from 0.906 g/cm3 and a Dow Rheology Index of at least 5/MI2,MI2 being the melt index measured according to ASTMD-1238 condition 190° C./2.16 kg and the Dow Rheology Index being determined by a dynamic rheological analysis performed at 190°.

Abstract: The invention relates to a flow device (12) intended for a two-phase flow processing enclosure (10) of the natural counter-flow type, in which an ascending gaseous flow and a descending liquid flow circulate, which device is formed by an appreciably horizontal tray (13) having openings (14) for the passage of the ascending gaseous flow, and a channel (15) for recovering the descending liquid flow, the channel (15) discharging into a flow orifice (16), characterized in that it comprises a single guide device (18) extending beneath the tray (13) and connected to the flow orifice (16) in such a way that the liquid flows on its outer wall. The invention also relates to a processing enclosure, particularly for processing a hydrocarbonated or aqueous type liquid flow, comprising a flow device according to the invention.

Abstract: The present invention relates to a method for producing a propylene polymer having a very high melt flowability, specifically to a method for producing an isotactic propylene polymer having a dramatically improved melt flowability with a relatively high production yield in convenient way, by improving the reactivity of hydrogen that is served as a molecular weight controlling agent in propylene polymerization.

Abstract: The present invention discloses a metallocene catalyst component of formula (Flu-R?-Cp)M(?3-C3R?5)(ether)n (I) wherein Cp is a cyclopentadienyl, substituted or unsubstituted, Flu is a fluorenyl, substituted or unsubstitutted, R? is a structural bridge between Cp and Flu imparting stereorigidity to the component, M is a metal Group III of the Periodic Table, each R? is the same or different and is hydrogen or a hydrocarbyl having from 1 to 20 carbon atoms and n is 0, 1 or 2. It further discloses a process for preparing said catalyst component and its used in the controlled polymerisation of polar or non polar monomers.

Abstract: The subject of the invention is a method for treating a natural gas containing ethane, comprising the following stages: (a) extraction of at least one part of the ethane from the natural gas; (b) reforming of at least one part of the extracted ethane into a synthesis gas; (c) methanation of the synthesis gas into a methane-rich gas; and (d) mixing of the methane-rich gas with the natural gas. Installation for implementing this method.

Abstract: Provided is a process for adsorptive separation of p-xylene from an aromatic hydrocarbon mixture comprising other isomers of xylene, and a device used therein. More specifically, the present invention provides a separation process employing simulated moving bed (SMB) adsorptive chromatography, characterized by pretreating a fluid mixture, i.e. the feed, by using single adsorption chamber so as to raise the concentration of a component to be separated, and then carrying out the simulated moving bed adsorptive separation, thereby improving productivity, and a device used therein.

Abstract: Circulating completion and workover fluids used in hydrocarbon recovery are filtered after monitoring for viscosity, which frequently causes plugging of filters. A viscometer generates a signal representative of viscosity in the fluid; the signal is used by a programmable controller to divert viscous fluid from the filter, or to take other action to prevent damage to the filter. The viscometer can be used in various positions in the system.

Abstract: The invention relates to a method for the purification of light hydrocarbons having a cut point of between 20 and 250° C. and containing sulphur and/or nitrogen compounds which are refractory to standard hydrotreating. The inventive method is characterised in that it comprises the following steps, namely: (a) a step involving the oxidative polymerisation of compounds containing a —X—CH? group in a 5- or 6 membered hydrocarbon ring, wherein X denotes a sulphur or nitrogen atom, in the presence of at least one oxidising agent selected from metal cations; (b) a step involving the separation of the formed polymers and the oxidising agent from the light hydrocarbons; and (c) a step involving the oxidation of the metal cation, said steps being performed in the above order. Moreover, each of the aforementioned steps can be combined with at least the step following same.