Abstract: The process for liquefying a gaseous stream received from a pipeline that is comprised predominantly of ethane and a relatively small amount of other components by using a mixed refrigerant loop incorporating heavy hydrocarbons, as well as a distillation column to remove constituents lighter than ethane.

Abstract: A liquid concentrate which includes: a) from 20 to 70% by weight of 3-phenylpropan-1-ol, b) from 10 to 50% by weight of 1,2-octanediol, c) from 15 to 60% by weight of 1,3-propanediol, and d) where necessary up to 2000 ppm of one or more antioxidants; and a composition for topical application, including such liquid concentrate.

Abstract: In a method for producing a first pressurized gas and a second gas on a one-off basis by cryogenic distillation of air, according to a first step, no fluid heats up or cools down in a second heat exchanger, and according to a second step, a flow of pressurized liquid from the double column heats up and vaporizes in the second exchanger to form a gas required on a one-off basis, a flow of air at the second pressure cools in the second exchanger.

Abstract: Manganese-containing film forming compositions, their preparation, and their use for the vapor deposition of films are disclosed. The manganese-containing film forming compositions comprise silylamide-containing precursors, particularly {Mn[N(SiMe2Et)2]2}2.

Abstract: In a process for the production of carbon dioxide and hydrogen from a gas flow comprising at least hydrogen, at least one sulfur-comprising component and carbon dioxide originating from a Claus unit fed with a gas comprising at least 50 mol % of oxygen, the gas flow is compressed and dried in order to produce a compressed and dried gas flow and the compressed and dried gas flow is separated at a subambient temperature in order to produce at least a fluid enriched in carbon dioxide with respect to the compressed and dried gas flow and at least a fluid enriched in hydrogen with respect to the compressed and dried gas flow.

Abstract: A method for condensing argon can include two flow streams interacting with each other in a heat exchanger found within a cold box: a stream of gaseous argon enters the heat exchanger to be cooled down below its liquefaction point by a stream of pressurized liquid nitrogen entering the heat exchanger. While passing through the heat exchanger, gaseous argon is gradually cooled down until it is condensed into liquid, flowing by gravity to the nearby liquid argon storage tank.

Abstract: The invention relates to a method for denitrogenation of natural gas by distillation, in which natural gas cooled in an exchange line is separated in a system of columns including at least one column, a nitrogen-enriched gas is drawn from one column of the system of columns and is heated in the exchange line, a methane-enriched liquid is drawn from one column of the system of columns, pressurized and vaporized in the exchange line at at least one vaporization pressure, and at least one portion of the cooled natural gas expands in gaseous form in a turbine and is sent to one column of the system of columns in gaseous form.

Abstract: This invention relates to a method for treating chemical paper pulp comprising a step of treating the pulp with ozone followed by a step of alkaline extraction, in which alkaline extraction takes place in the presence of magnesium ions (Mg2+).

Abstract: A catalyst for catalytic reactors of which the outer shape is a helix with n blades, where n is greater than or equal to 1, wherein the stack void fraction percentage is between 75% and 85% and the surface area/volume ratio is greater than 1000 square meters/square meters.

Abstract: An apparatus for condensing argon can include cold box, which is preferably sealed and largely maintenance free, where all instruments and valves requiring routine maintenance are to be located outside, a nitrogen separator disposed within the cold box, a heat exchanger disposed within the cold box, the heat exchanger is configured to condense a gaseous argon stream against a pressurized liquid nitrogen stream. The cold box is elevated as compared to an argon storage vessel, such that the condensed argon stream can flow to the argon storage vessel without the need for a pump.

Abstract: One or more polymeric hollow fiber membranes are pyrolyzed to form one or more hollow fiber CMS membranes by directing a flow of pyrolysis gas through a bundle of polymeric membranes (including a plurality of green, polymeric hollow fiber membranes oriented so that their ends are disposed with ends of the bundle) in a direction perpendicular to a length direction of the bundle in order to sweep away off-gases that are formed during pyrolysis.

Abstract: One or more polymeric hollow fiber membranes are pyrolyzed to form one or more hollow fiber CMS membranes by directing a flow of pyrolysis gas through a polymeric membrane cartridge (including a porous center tube around which one or more green, polymeric, hollow fiber membranes is arranged) or a bundle of polymeric membranes (including a plurality of green, polymeric hollow fiber membranes oriented so that their ends are disposed with ends of the bundle) in a direction perpendicular to a length direction of the cartridge or bundle in order to sweep away off-gases that are formed during pyrolysis.

Abstract: The invention relates to a method for treating a hydrocarbon feed gas stream containing CO2 and H2S to recover a purified CO2 gas stream (vii), comprising: a. Separating said feed gas stream into a sweetened gas stream (i), and an acid gas stream (ii); b. Introducing stream (ii) into a Claus unit wherein an oxygen-rich stream is used as a combustive agent in the Claus furnace, thereby recovering a liquid stream of elemental sulfur (iii) and a tail gas stream (iv); c. Introducing the stream (iv) into a Tail Gas Treatment Unit (TGTU) thereby separating said tail gas stream into a CO2 enriched gas stream (v), and a stream enriched in sulfur compounds (vi); d. Compressing stream (v) exiting the TGTU; e. Passing the compressed CO2 enriched gas through a CO2 purification unit thereby recovering a purified CO2 gas stream (vii), and the device for carrying out said method.

Abstract: A four-stage membrane separation unit purification process, especially for prepurified biogas, in which a retentate from the first stage is fed as feed gas to a second stage, a permeate from the first stage is fed as feed gas to a third stage, a retentate from the third stage is fed as feed gas to a fourth stage.

Abstract: The invention relates to a laser cutting method for cutting a stainless steel workpiece using laser beam generation means comprising a silica fiber with an ytterbium-doped core to generate the laser beam. Preferably, the laser beam generated by the ytterbium-based fiber has a wavelength between 1.07 and 1.09 ?m, a quality factor of the laser beam is between 0.33 and 8 mm·mrad, and the laser beam has a power of between 0.1 and 25 kW. The assistance gas for the laser beam is chosen from nitrogen, helium, argon and mixtures thereof, and, optionally, it further contains one or more additional compounds chosen from O2, CO2, H2 and CH4.

Abstract: The object of the present invention is to provide a different solution for revamping existing producing apparatuses so as to increase the production of low pressure pure nitrogen while controlling as far as possible the capital and operation expenditures. The revamping solution comprises increasing the diameter and/or height of a pure nitrogen column to thereby improve the production capacity thereof; choosing to switch the conduits where the waste liquid nitrogen and pure liquid nitrogen are passed through in the subcooler according to the increment of the low pressure pure nitrogen production; adding an additional heat exchanger to conduct a heat exchange between a portion of the medium pressure air and the increased low pressure pure nitrogen; or simultaneously switching the main parts of the conduits which transfer the pure liquid nitrogen and waste liquid nitrogen from a first column of higher pressure to a second column of lower pressure while performing the above revamping.

Abstract: A method for filling a tank (1) with liquefied gas, in particular a tank with cryogenic liquid, from a liquefied gas container (2), in particular a cryogenic liquid container (2), which container (2) is in fluid communication with the tank (1) via a filling pipe (3), wherein the method uses a pressure differential generation member (4) for transferring liquid from the container (2) to the tank (1) at a predetermined pressure, characterized in that, at or following the switching on time (M) of the pressure differential generation member (4), the method comprises a step of determining the pressure (PT4) in the tank (1) via a measurement of a first pressure in the filling pipe (3), and, following the determination of the pressure (PT4) in the tank, a step of limiting the first instantaneous pressure (PT3) to a level below a maximum pressure threshold (PT3sup), said maximum pressure threshold being defined on the basis of the determined value of the pressure (PT4) in the tank (1) and exceeding said determined val

Abstract: The invention relates to a gas sampling device for a filling station for hydrogen tanks, said device comprising a circuit comprising a first upstream end provided with an inlet connector to a detachably connected to an outlet connector of a filling station, and two conduits respectively for sampling and filling connected in parallel to the inlet connector, the sampling conduit comprising a valve system, a first pressure reducing valve and a container for collecting a sample of gas expanded by said first pressure reducing valve, and the filling conduit comprising a downstream end provided with a first outlet connector to a detachably connected to an inlet connector of a tank to be filled.

Abstract: Disclosed are Si-containing film forming compositions comprising carbosilane substituted amine precursors. The carbosilane substituted amine precursors have the formula (R1)aN(—SiHR2—CH2—SiH2R3)3?a, wherein a=0 or 1; R1 is H, a C1 to C6 alkyl group, or a halogen; R2 and R3 is each independently H; a halogen; an alkoxy group having the formula OR?, wherein R? is an alkyl group (C1 to C6); or an alkylamino group having the formula NR?2, wherein each R? is independently H, a C1-C6 alkyl group, a C1-C6 alkenyl group, or a C3-C10 aryl or heterocycle group. Also disclosed are methods of synthesizing the carbosilane substituted amine precursors and their use for deposition processes.

Abstract: A method for the co-production of hydrogen and crude methanol, including; a hydrocarbon processing reforming or gasification process generating a syngas stream comprising hydrogen, carbon monoxide and carbon dioxide; introducing at least a portion of the syngas stream to a once-through methanol synthesis reactor: introducing at least a portion of the stream from methanol reactor to a separation device separating this stream into a crude methanol stream and methanol synthesis off gas stream; introducing at least a portion of the methanol synthesis off gas to a hydrogen separation device, thereby producing a pure hydrogen stream.