Abstract: The invention relates to a distribution device having a container having side walls and a bottom with perforations; a distributor arranged beneath the container and provided with distribution channels that each have a polygonal cross-section; and mechanical connection bodies between the distributor and the linear elements, which extend beneath the distribution channels and fluidically connect the distribution channels to the linear elements when the distribution device is built into the contacting assembly.

Abstract: A valve for pressurized fluid, with or without incorporated pressure-reducing valve, comprising a body accommodating a fluid circuit having an upstream end designed to be placed in communication with a reserve of pressurized fluid and a downstream end designed to be placed in communication with a using device, the circuit comprising an isolation valve element in order to selectively close off the circuit, the valve element being controlled by a lever mounted so as to pivot on the body between a rest position in which the isolation valve element is held in a position of closing the circuit and an active position in which the lever moves the isolation valve element into a position of opening the circuit , wherein the lever comprises at least one opening, wherein the valve comprises a functional abutment mounted on the body and wherein only in the rest position the opening accommodates within it a portion of the functional abutment mounted on the body.

Abstract: Support element and method for a cryogenic fluid circuit comprising a plurality of orifices intended for the passage of cryogenic-fluid transfer pipes, said support element comprising at least one thermal path formed between two adjacent orifices, the thermal path comprising a blind opening, the opening being delimited by two spaced-apart walls extending between two ends in a longitudinal direction perpendicular to the plane of the orifices, the two walls being joined together by an end wall, the support element being characterized in that it comprises a first set of orifices which is surrounded by a first thermal path and a second set of orifices, the first thermal path being situated between the first set of orifices and the second set of orifices, which means to say that the first thermal path is in thermal and mechanical connection with, on the one hand, all the orifices of the first set of orifices and, on the other hand, all the orifices of the second set of orifice.

Abstract: Cryogenic fluid transfer line comprising a tubular outer jacket housing at least two interior fluid-transfer tubes and a heat shield forming an insulating wall arranged around the interior tubes, the outer jacket comprising a lateral pumping opening connected to a pumping member intended to pull a vacuum in the outer jacket, characterized in that the heat shield comprises an orifice situated adjacent to the opening and an optical cover, the optical cover being positioned facing the orifice and in a plane distinct from that of the wall of the heat shield so as to prevent or limit direct thermal radiation from the outer jacket toward the interior tubes.

Abstract: A process for injecting biomethane into a network which has a gross calorific value of value X between X1 and X2, comprising the injection of nitrogen into the biomethane network before the injection of the biomethane into the network which has a gross calorific value of value X so as to reduce the calorific value of the biomethane network to a value between X1 and X2, with the nitrogen derived from the retentate of at least one membrane stage.

Abstract: The invention relates to a method fro treating a mixture in order to separate carbon dioxide and hydrogen from said mixture, in which: i) the mixture is cooled and partially condensed and a first liquid is separated from the rest of the mixture in a first phase separator; ii) a gas from or derived from a gas from the first phase separator is treated in a hydrogen pressure swing adsorption module in order to produce a hydrogen-rich gas and a hydrogen-depleted residual gas; and iii) said hydrogen-depleted residual gas or a gas derived from said depleted gas is cooled and partially condensed and a second liquid is separated from the remaining gas in a second phase separator, separate from the first phase separator, wherein the first and/or second liquid being rich in carbon dioxide. The invention also relates to an installation for implementing such a method.

Abstract: A transportable apparatus for production of liquefied natural gas (LNG) having include a housing, a natural gas feed inlet, a heat exchanger, a phase separator, a liquid outlet disposed on the cold end of the heat exchanger, an LNG product outlet disposed on the cold end of the heat exchanger, a first refrigeration supply, a second refrigeration supply, and wherein the heat exchanger, the phase separator, the first expansion valve, the first refrigeration supply, and the second refrigeration supply are all disposed within the housing. The first refrigeration supply includes expansion of a portion of the LNG product, and the second refrigeration supply can include expansion of another portion of the LNG product or expansion and heat exchange with a supply of liquid nitrogen. The production of LNG is achieved without the external supply of electricity.

Abstract: The invention relates to an insulated chamber comprising at least one element that may operate at sub-ambient temperature, the space around the element(s) being filled with solid insulation and means for injecting a gas containing at least 95 mol-% nitrogen into the insulation, at least some of the gas-injection means opening at a position vertically above at least one element to insulate.

Abstract: A method for generating electricity by means of a nuclear power plant and a liquid vaporization apparatus involves, during a first period, producing heat energy by means of the nuclear power plant and using the heat energy to vaporize water or to heat water vapour, expanding the water vapour formed in a first turbine and using the first turbine to drive an electricity generator in order to produce electricity, vaporizing liquefied gas coming from a cryogenic store in order to produce pressurized gas, reheating the pressurized gas with a part of the water vapour intended for the first turbine of the nuclear power plant and expanding the pressurized fluid in a second turbine to produce electricity and, during the second period, liquefying the gas to be vaporized.

Abstract: The invention relates to a valve for a fluid cylinder, a first draw-off circuit comprising a member for regulating the flow and/or pressure of the drawn-off fluid, the valve comprising a manual control member and an electronic device displaying data relating to the fluid contained in a cylinder connected to the valve.

Abstract: The invention relates to a device for cooling and/or liquefying, at a low-temperature, a working fluid containing helium or consisting of pure helium. The device includes a working circuit provided with a compressor station and a cold box. The compressor station includes one or more compression stages, each using one or more compressors that include a compressor wheel rigidly connected to an axle that is rotatably mounted on bearings. The axle of each compressor is rotated by an output shaft of a motor via a gear mechanism placed in a mechanical housing including lubricating oil. Said device is characterized in that the inner space of the mechanical housing contains a gaseous atmosphere consisting of a gaseous mixture having a mean molar mass that smaller than the molar mass of the air.

Abstract: The present invention relates to a process for producing biomethane suitable for supplying a natural gas network that incorporates a process for providing heat for heating the biogas production step, the process comprising at least steps of producing biogas by anaerobic fermentation of organic matter, of pretreating and compressing the biogas and also of permeation in order to obtain, after a first separation by permeation, a stream of biomethane and a gaseous permeate having a reduced methane content; the process additionally provides the heat necessary for the anaerobic fermentation step via a boiler using the retentate from a second permeation step fed by the permeate from the first separation.

Abstract: CO2 may be recovered from flue gas by a hybrid system utilizing both gas separation membranes and adsorption. Purified flue gas is separated by the gas separation membrane into permeate and non-permeate streams. The permeate stream is compressed, partially condensed at a heat exchanger, and phase-separated to produce a vent gas and high purity liquid CO2. The vent gas is recycled to the membrane. The non-permeate is fed to a PSA unit. The CO2 blow-down from the PSA unit is also compressed with the permeate stream. The adsorbent in the PSA unit is regenerated with combustion air and the CO2-containing combustion air is fed to a combustor for combustion with fuel and an oxidant to produce the flue gas.

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: A method for producing a highly pure PMDA comprises at least the following steps: (1) a step of preparing a raw material solution by dissolving a raw material of a pyromellitic dianhydride in an acetic acid solvent, (2) a step of preparing a precursor pyromellitic dianhydride by recrystallizing the pyromellitic dianhydride in the prepared raw material solution and separating the acetic acid solvent, (3) a step of performing a degassing treatment on the precursor pyromellitic dianhydride by stirring the precursor pyromellitic dianhydride in a fluidized state while heating under reduced-pressure conditions, and (4) a step of taking out the pyromellitic dianhydride subjected to the degassing treatment.

Abstract: The invention concerns a method for determining the concentrations of chemical components of a product, in particular air, in a distillation column, said method involving implementing a model for estimating the concentration of the components from measurements carried out by one or a plurality of sensors, said model using an adjustment parameter making it possible to take into consideration operating variations of the column, the method also includes a step which involves detecting the values of said adjustment parameter that are outside a nominal variation range of said parameter in order to diagnose a fault D in one or a plurality of said sensors.

Abstract: A first gas present at low concentration in a source gas is recovered from the source gas (comprising a fast first gas and a slow second gas) at a relatively high recovery using a particular scheme of three gas separation membrane stages. The non-permeate from the first stage is a product gas comprising the slow gas. The second stage feeds non-permeate to the third stage. The third stage non-permeate is combined with the gas fed to the first stage. The permeate from the second stage is divided into two portions. The second portion is a product gas comprising the fast gas. The first portion is combined with the permeates from the first and third stages and the combination is compressed and fed to the second stage. The invention is particularly applicable for separation of Helium from natural gas.

Abstract: A method for filling at least one buffer container of a hydrogen filling station, the station comprising a fluid circuit linked to said at least one buffer container, the circuit of the filling station comprising a first end linked to at least one source of hydrogen gas, the circuit comprising a second end provided with a transfer conduit intended to be removably connected to a tank, the method being characterized in that it comprises a step of determining the current concentration of at least one impurity in the hydrogen in the buffer container during the filling of same, a step of comparing said current concentration of the impurity relative to a predefined threshold concentration and, when the current concentration of the at least one impurity reaches said threshold concentration, stopping the filling of said buffer container.

Abstract: Method for filling a tank with pressurized hydrogen via a filling station comprising at least one buffer container and a fluid circuit connected to said at least one buffer container, the circuit of the filling station comprising a first end connected to at least one source of hydrogen gas, the circuit comprising a second end fitted with a transfer pipe intended to be connected removably to the tank that is to be filled, the method involving a step of purifying the hydrogen supplied by the source in a purification member before transferring same to the at least one buffer container, the circuit of the filling station further comprising at least one compression member for compressing the pressurized gas in order to fill the at least one buffer container, the method being characterized in that it comprises a step of transferring heat energy between, on the one hand, the compressed gas of the outlet from the compression member and, on the other hand, the purification member.

Abstract: A liquid redistributor, arranged in a packing column between two packings, wherein in the column a liquid phase is guided from top to bottom and against the same a gas phase from bottom to top, comprising a liquid distributor tray and a droplet damping tray, which attenuates the fluidization of the liquid layer on the liquid distributor tray as caused by the droplets falling down.