Abstract: Pressurized gas tanks are filled from at least one gas source using a transfer circuit, a set of buffer storage tanks and at least one compressor. The set of buffer storage tanks may be filled with pressurized gas from the at least one gas source by pressure balancing via balancing lines without going through the at least one compressor. The set of buffer storage tanks may also be filled with pressurized gas from the at least one gas source that is compressed by the at least one compressor.

Abstract: A method and system for purification of helium and CO2 from a stream containing at least Helium, CO2, nitrogen or methane uses a combination of cryogenic, membrane and adsorption technologies.

Abstract: A process for producing biomethane by scrubbing a biogas feed stream includes introducing the feed gas stream into a pretreatment unit wherein a CO2-depleted gas stream is partially separated from a CO2 stream and an oxygen stream and is compressed to a pressure P1 above 25 bar abs. Subjecting the CO2-depleted gas stream to cryogenic separation in a distillation column to separate a nitrogen stream and produce a CH4-enriched stream, the distillation column comprising n plates, n being an integer between 8 and 100. Recovering a pressurized CH4-enriched stream by pumping the CO2-depleted gas stream to a pressure P2 above 25 bar absolute.

Abstract: A device and process for refuelling containers with pressurized gas comprising a pressurized gas source, a transfer circuit comprising one upstream end, the device comprising a refrigeration system for cooling the gas flowing from the gas source prior to its entering into the container, the refrigeration system comprising a refrigerant cooling loop circuit comprising, arranged in series, a compressor, a condenser section, an expansion valve and an evaporator section, the refrigeration system comprising a cold source in heat exchange with the condenser section and a heat exchanger located in the transfer circuit and comprising a heat exchange section between the gas flowing in the transfer circuit and the evaporator section, the refrigerant cooling loop circuit comprising a bypass conduit comprising an upstream end connected to the outlet of the compressor and a downstream end connected to the refrigerant cooling loop circuit upstream the compressor inlet and bypassing the condenser section and expansion valve

Abstract: An apparatus for the separation of air by cryogenic distillation comprises three columns, including two concentric columns, the external diameter of the third column being at most equal to that of the second distillation column, a pipe for feeding the third column with air, a reflux pipe connected to an intermediate level of the upper section of the first distillation column in order to withdraw a liquid enriched in nitrogen, the pipe being connected to the head of the second distillation column and passing through a region of the third column devoid of heat exchange means and of mass exchange means, and an intermediate pipe for withdrawing a liquid at an intermediate level of the first distillation column.

Abstract: A method and apparatus for producing high-purity nitrogen and low-purity oxygen using three-column rectification are provided, in which: nitrogen and oxygen undergo rectification in different columns, with high-purity nitrogen and low-purity oxygen being separated out of air simultaneously, thereby overcoming the shortcomings of conventional low-purity oxygen production equipment, and also reducing equipment investment, lowering energy consumption, increasing product added value, and realizing a circular economy effect.

Abstract: A liquefied gas cooling apparatus including: a gas flow path for carrying a liquefied gas that is liquefied by cooling; and a refrigeration unit including a refrigerating cycle formed by a compressor, a cooling unit, and an expander. The compressor is driven through an electric motor contained in a sealed housing together with a compressor mechanism.

Abstract: A process for purifying a feed gas including methane and heavy hydrocarbons, including: step a): cooling the feed gas in a heat exchanger; step b): introducing the resulting into a first phase separator to produce a liquid stream depleted in methane and enriched in heavy hydrocarbons and a gas stream; step c): separating the gas stream in a membrane from which a methane-enriched permeate stream and a partially condensed residue stream exit; step d): introducing the residue stream from step c) into a second phase separator vessel in order to produce a liquid stream and a gas stream; step e): introducing at least one portion of the gas stream resulting from step d) into a JT expansion means; and step f): heating at least one portion of the expanded stream in the heat exchanger used in step a) counter-current to the feed stream in order to cool the latter.

Abstract: A radiative recuperator preheats oxidant and/or fuel for combustion at one or more burners of a furnace. The recuperator includes a duct, at least portions of which comprise a material having a thermal conductivity of greater than 1 W/(m·K), preferably greater than 3 W/(m·K), that receives hot flue gas produced by the burner(s). The duct radiatively transfers heat to oxidant or fuel (for preheating) flowing through one or more metallic pipes disposed in between the duct and an insulating wall.

Abstract: A fuel cell plate comprising a face intended to route a fuel gas or an oxidizing gas to the active surface of a Membrane Electrode Assembly, said face of the plate comprising projecting ribs delimiting a determined number of channels provided for the circulation of gas, the channels having a determined length (LCA) and a determined width (E), the ribs having a determined width (LA), the plate being characterized in that the product P of the total length (LN) of the ribs on the plate per unit of active surface (in cm2) multiplied by the rate of opening (TO) of the plate is between 4.7 and 10, i.e. that 4.7<P (cm?1)=LN×TO)/S<10, the rate of opening TO being defined by TO=100·(E/E+LA), the active surface of the plate being the surface of the plate intended to be facing the active surface of the Membrane Electrode Assembly.

Abstract: Disclosed are mono-substituted cyclopentadienes, metal cyclopentadienyl complexes and methods for synthesizing them. The disclosed mono-substituted cyclopentadienes are synthesized by a selective catalytic carbon-carbon coupling reaction. The disclosed metal cyclopentadienyl complexes are synthesized from the disclosed mono-substituted cyclopentadienes. The disclosed metal cyclopentadienyl complexes include main group metal and transition metal cyclopentadienyl complexes, and may be used as deposition precursors contained in film forming compositions for film depositions in semiconductor industry, such as ALD, CVD, SOD, etc.

Abstract: The invention relates to a process and an apparatus for producing an olefin-containing feed stream for a steam reforming plant. According to certain embodiments of the invention, the olefin-containing hydrocarbon starting material is for this purpose vaporized and catalytically hydrogenated. The hydrogenation product stream obtained is separated into a gaseous reforming feed stream, which is fed to a steam reforming plant, and a gaseous recycle stream. As a result of the cooling according to the invention of the gaseous recycle stream down to at least partial condensation thereof and the separate recirculation of the gaseous partial recycle stream and of the liquid partial recycle stream, the procurement of a large and complicated circulation compressor is avoided and electric energy for operating this compressor is saved.

Abstract: Compounds and method of preparation of Si—X and Ge—X compounds (X=N, P, As and Sb) via dehydrogenative coupling between the corresponding unsubstituted silanes and amines (including ammonia) or phosphines catalyzed by metallic catalysts is described. This new approach is based on the catalytic dehydrogenative coupling of a Si—H and a X—H moiety to form a Si—X containing compound and hydrogen gas (X=N, P, As and Sb). The process can be catalyzed by transition metal heterogenous catalysts such as Ru(O) on carbon, Pd(O) on MgO) as well as transition metal organometallic complexes that act as homogeneous catalysts. The —Si—X products produced by dehydrogenative coupling are inherently halogen free. Said compounds can be useful for the deposition of thin films by chemical vapor deposition or atomic layer deposition of Si—containing films.

Abstract: Station for filling gas tanks comprising a gas source, a circuit comprising an upstream end connected to the source and a downstream end comprising a hose portion, the end of which is intended to be connected to the tank(s) to be filled, the circuit comprising, between the source and the downstream end, an automatic shut-off breakaway coupling arranged along a working axis, said breakaway coupling ensuring an automatic shut-off of the circuit in case of a determined tensile force on said breakaway coupling along its working axis, the station comprising a dispenser housing, the breakaway coupling being arranged in the dispenser housing with a determined orientation of the working axis, at least one part of the hose portion of the downstream end of the circuit protruding from the dispenser housing, the dispenser housing comprising a guide member for guiding a zone of the hose portion, characterized in that the guide member comprises an assembly deflecting wall(s) converging toward a central passage zone ensurin

Abstract: Device for pumping liquid hydrogen including, arranged in series between an inlet for fluid to be compressed and an outlet for compressed fluid, a first compression member with a piston forming a first compression stage and a second compression member with a piston forming a second compression stage. The first compression member compresses the liquid hydrogen to a supercritical state. The second compression member compresses the supercritical hydrogen from the first compression member to an increased pressure, in particular, between 200 and 1000 bar.

Abstract: Arrangement for regulation of a plant I for the membrane permeation treatment of a feed gas stream, comprising at least methane and carbon dioxide, that includes at least one means A for measurement of the gross calorific value (GCV) of the feed gas stream, at least one means B for comparison of the gross calorific value with a setpoint value E, at least one means C for production of a control signal as a function of the comparison of the gross calorific value with the setpoint value E, and at least one means D for transmission of this control signal to a means for regulation of said plant I.

Abstract: In a process for starting up an air separation unit, which is at a temperature of above 0° C., the air separation unit comprising a main air compressor for compressing the feed air, a booster driven by a turbine and a venting conduit connected downstream of the booster and upstream of the main heat exchanger wherein in order to start up the air separation unit, once the turbine is operating at said given speed, the venting conduit is opened to send at least part of the air compressed in the booster from the booster outlet to the atmosphere.

Abstract: An apparatus for separating air, comprising a double column, means for sending air to the purification unit at a pressure that is no more than 1 bar higher than atmospheric pressure, a pipe for sending a first air flow, the first air flow having been purified in the purification unit, to the heat exchanger at a fourth pressure that is no more than 1 bar higher than the second pressure, a pipe for sending the first purified air flow, which has been cooled in the heat exchanger, to the second column for separation, and a booster compressor, the apparatus not comprising any means for depressurizing the first flow.

Abstract: An air gas separation plant comprising, in the direction of circulation of the air stream: a compression means that makes it possible to compress the air stream to a pressure P1 of between 1.15 bar abs and 2 bar abs, an adsorption unit of TSA type, and a cryogenic distillation unit, with the adsorption unit comprising at least two adsorbers A and B each having a parallelepipedal casing arranged horizontally and comprising: an air stream inlet and an air stream outlet, a fixed bed adsorbent mass, likewise of parallelepipedal shape, the faces of which are parallel to the faces of the casing; and a set of volumes allowing the air stream to pass through the adsorbent mass horizontally, over the entire cross-section and throughout the entire thickness thereof.

Abstract: The present invention relates to a process and a system for supplying a backup gas at a higher pressure from a source gas at a lower pressure. The backup gas at the lower pressure is at least partially condensed against a backup liquid at a higher pressure in a reprocessing heat exchanger and as a result, the backup liquid is at least partially vaporized. The backup liquid at the higher pressure is formed from boosting liquefied backup gas at the lower pressure. A backup vaporizer is disposed downstream of the reprocessing heat exchanger to completely vaporize the backup liquid at a higher pressure before it was delivered to the customer. The present invention eliminates the use of costly gas compressor and mitigates associated safety risks, in particular when the backup gas is oxygen.