Abstract: The invention relates to an invention for the liquefaction of hydrogen, comprising a supply circuit for supplying hydrogen to be cooled, a plurality of heat exchangers arranged in heat exchange with the supply circuit, a first pre-cooling device, a second pre-cooling device and a cooling system in heat exchange with the set of exchangers, to reduce the temperature of the hydrogen to a temperature below the critical temperature of hydrogen, the first pre-cooling device comprising a refrigerator having a closed refrigeration cycle for a first cycle gas comprising at least three components, a first centrifugal compressor, a cooling member, three phase separators configured to separate the two-phase fluid, the refrigerator having a refrigeration cycle of the first pre-cooling device comprising a first expansion member configured to expand the liquid produced by one of the phase separators and to return this fluid to a first centrifugal compressor via a passage through a heat exchanger of the set of exchangers.

Abstract: A system and method for supplying a backup product in an air separation device, as well as a system and method for supplying a lower-pressure product to a user by means of pressurization of a cryogenic liquid pump during normal operation of an air separation device, i.e., when the cryogenic liquid pump is in the cold standby state. By means of the system and method, a cryogenic liquid product taken from a storage tank is pressurized by the cryogenic liquid pump to produce a lower-pressure product by taking full advantage of the low-speed operation of the cryogenic liquid pump in the cold standby state, and the lower-pressure product is transmitted to product supply lines of a user, to achieve the function of supplying the lower-pressure product to the user.

Abstract: A method for the additive manufacturing of a component, in which method the component is configured layer-by-layer from a base material which is solidified at least in regions in each layer, the method includes introducing at least one cooling gas flow for cooling at least the region to be solidified by way of at least one cooling medium nozzle into a carrier gas flow so as to form a cooling gas flow, wherein the cooling medium is present so as to be liquid and/or gaseous, wherein the cooling gas flow is guided through a de Laval nozzle, wherein the cooling medium flow is introduced such that the outflow of the cooling medium flow into the carrier gas flow takes place within or downstream of the de Laval nozzle, and the cooling gas flow is directed onto the component.

Abstract: The invention relates to a facility for the liquefaction of hydrogen in a cryogenic liquefied-hydrogen store, via a downstream end of a circuit for hydrogen that is to be cooled, the cryogenic store being equipped with a withdrawing pipe configured to allow liquefied hydrogen to be supplied to at least one tank that is to be filled, particularly a mobile tank, the facility comprising a set of heat exchangers in a heat exchange relationship with the circuit for the hydrogen that is to be cooled, and a cooling device in a heat exchange relationship with the set of heat exchangers, said cooling device comprising a refrigerator with a cycle-gas refrigeration cycle, the facility comprising at least a first pipe for recovering boil-off gas, comprising a first end intended to be connected to a tank and a second end connected to the downstream end of the circuit for the hydrogen that is to be cooled, said first recovery pipe comprising at least a cryogenic compressor and a portion in a heat exchange relationship with

Abstract: An installation and method for storing liquefied gas, comprising a plurality of separate storage tanks each configured to contain liquefied gas, comprising a cooling circuit provided with a refrigeration device, a withdrawal pipe and a plurality of first injection pipes towards each of the tanks in order to cool the withdrawn fluid flow, the tanks comprising a degassing line, the installation comprising a set of controlled valves situated at least in the cooling circuit, wherein the first tank contains liquid and at least one other tank is empty, containing essentially boil-off gas, that is to say containing little or no liquid, wherein there is cooling of the fluid contained in the first tank, re-injection into the first tank, injection of liquid cooled by the refrigeration device into at least one other empty tank and transfer of boil-off gas generated in the or the other tanks to the first tank

Abstract: An air separation unit comprises a first rectification column, having a top condenser and a second rectification column placed side by side, a heat exchanger, a first pump and a second pump connected in parallel, the first pump being capable of producing liquid at a first liquid pressure and the second pump being capable of producing liquid at a second liquid pressure, higher than the first pressure, each pump having an inlet connected to the second column, a first outlet of the first pump being connected to a first outlet conduit, a second outlet of the second pump being connected to a second outlet conduit, the first and second outlet conduits being connected to the condenser section

Abstract: A device for continuously mixing a first powder and a second powder, includes a first metering device for continuously metering the first powder, and a second metering device for continuously metering the second powder, a mixer designed to mix the first powder metered by the first metering device and the second powder metered by the second metering device so as to supply a continuous stream of powder mixed according to a determined ratio, and a sampling device designed to sample a fraction of the stream of mixed powder.

Abstract: A system for minimizing heat leaks to a liquid cryogen pump incorporating a bayonet includes a male bayonet portion received in a female bayonet portion, each having a circular cross-section and comprising an outer pipe surrounding an inner pipe and an annulus therebetween which is under vacuum, wherein a liquid cryogen pump is contained within an interior of the male bayonet portions.

Abstract: A method for delivering a liquid cryogen from a liquid cryogen source to a storage tank can include the steps of: providing a bayonet system having an in-line pump disposed therein, the bayonet system having an upstream end and a downstream end; attaching the bayonet system to an upstream conduit, wherein the upstream conduit is in fluid communication with a liquid cryogen source, attaching the bayonet system to a downstream conduit, wherein the downstream conduit is in fluid communication with the storage tank; purging and cooling the upstream conduit and the downstream conduit; and flowing the liquid cryogen from the liquid cryogen source to the storage tank

Abstract: A method for liquefying a hydrocarbon stream using a heat exchanger having a plurality of plates parallel to each other and to a longitudinal direction that is substantially vertical, the exchanger having a length measured in the longitudinal direction, the plates being stacked with spacing so as to define between them at least one first series of passages for the flow of at least part of a two-phase cooling stream vaporizing by exchanging heat with at least the hydrocarbon stream.

Abstract: The invention relates to a device for supplying pressurized cryogenic fluid having a thermally insulated container consisting of an inner tank for cryogenic liquid to be pumped, for example hydrogen, and an outer tank delimiting a sealed volume about the inner tank, the inner tank and the outer tank extending vertically and being closed at the top end thereof by a set of covers, the device having a pumping system mounted on the set of covers and having a lower end seated in the inner tank to pump the cryogenic liquid therein, the device also having a cryogenic liquid feed circuit to supply the inner tank and a delivery circuit to transfer the cryogenic liquid pumped by the pumping system out of the inner tank, the pumping system having at least one piston pump actuated by an actuator, preferably a linear actuator.

Abstract: The invention relates to a furnace for performing an endothermic process, the furnace including a plurality of process tubes containing a catalyst for converting a gaseous feed, wherein the process tubes are arranged in rows within the furnace, each row of process tubes thereby defining a process tube row, a plurality of inner burners arranged in rows, each row of inner burners being arranged between and parallel to process tube rows, thereby defining an inner burner row, and a plurality of outer burners arranged in rows, each row of outer burners being arranged between and parallel to a process tube row and a furnace wall, thereby defining an outer burner row. A number of burners of an outer burner row is smaller than a number of burners of an inner burner row. The invention also relates to a process for operating a furnace for performing an endothermic process.

Abstract: A plant for production of purified methane from natural gas and biogas, having, arranged in series in a gas circuit, a heavy hydrocarbon removal unit and a CO2 removal unit. The plant includes a biogas purification unit having an inlet intended to be connected to a biogas source and a first purified biogas outlet connected to the first inlet of the CO2 removal unit, the biogas purification unit being configured to produce biogas or biomethane with a variable/defined CO2 concentration, and a boiler having a first inlet connected to the second outlet of the heavy hydrocarbon removal unit, the boiler being configured to produce a thermal power determined as a function of the amount of hydrocarbons removed and supplied by the heavy hydrocarbon removal unit, the boiler being fluidically connected to the CO2 removal unit to provide said unit with thermal energy produced for CO2 removal.

Abstract: An ultra-high-purity oxygen production method and apparatus are provide, in which the method can include a step in which feed oxygen comprising low-boiling-point components as impurities is introduced from a warm end of a main heat exchanger and cooled, then introduced into an oxygen rectification column, and product ultra-high-purity oxygen from which the low-boiling-point components have been removed is drawn as a gas or a liquid from a lower portion of the oxygen rectification column.

Abstract: A method for production of at least two liquid oxygen product streams from an air separation unit, wherein, the oxygen streams are cooled by heat exchange from at least one gaseous stream comprising predominantly nitrogen from the distillation column, and wherein the product liquid oxygen streams are at different temperatures.

Abstract: An ultraviolet curing apparatus having: a roller for guiding a film coated with a resin; a first nitrogen gas introduction port and a second nitrogen gas introduction port for introducing nitrogen gas; a UV irradiation portion for irradiating the film with ultraviolet rays from between the first nitrogen gas introduction port and the second nitrogen gas introduction port; an oxygen concentration meter for measuring an oxygen concentration between the film and the UV irradiation portion; an air introduction port for introducing air between the film and the UV irradiation portion; and a controller for controlling at least any one of: an amount of air introduced from the air introduction port, an amount of nitrogen gas introduced from the first nitrogen gas introduction port, and an amount of nitrogen gas introduced from the second nitrogen gas introduction port, so that the oxygen concentration is within a preset oxygen concentration set range.

Abstract: An installation and method for purifying and liquefying natural gas having, arranged in series, an adsorption purification unit, a unit for separating hydrocarbons by refrigeration, and a liquefier. The installation has a gas power plant for combined production of heat and electricity by hydrocarbon combustion. The installation has at least one electrical member, with the power plant being electrically connected to at least one of the electrical members in order to supply them with electrical energy.

Abstract: A detachable coupling device with automatic closure for the transport of fluid, including two fluid transport pipes extending in a longitudinal direction and each having, at one connection end, a valve mechanism, the device also including an external tube disposed around each transport pipe and, in the coupled position, the two connection ends are configured to be relatively longitudinally displaceable between a first configuration, in which the valve mechanisms are closed, and a second configuration, in which the valve mechanisms are open, the transition from the first configuration to the second configuration being realized by a relative longitudinal movement of the two valve mechanisms close to one another.

Abstract: In a compression process in a dynamic compressor having at least one first and one second compression stages, a first gas having a first molecular weight of less than 10 g/mol is compressed, at least one second fluid having a second molecular weight greater than 50 g/mol is mixed with the first gas to form a third gas to be compressed having a molecular weight greater than 10 g/mol, the third gas is sent to the first compression stage, the third gas is cooled in a first heat exchanger downstream of the first compression stage, where it is partially condensed, the partially condensed third gas is sent to a first phase separator to form a fourth gas having a lower molecular weight than the third gas and a first condensed liquid having a higher molecular weight than the third gas, the fourth gas is sent from the first phase separator to the second compression stage, the fourth gas compressed in the second compression stage is sent to cool in a second heat exchanger where it partially condenses, and the partially

Abstract: An apparatus for producing hydrogen using a retrofitted steam methane reformer (SMR) via ammonia cracking is provided. The apparatus can include: means for providing a pressurized and gaseous ammonia stream to a plurality of reactor tubes; a furnace having the plurality of reactor tubes and a plurality of burners, wherein the furnace is configured to catalytically crack the ammonia within the reactor tubes to produce a crude process gas and a flue gas; a plurality of waste heat recovery sections; and a pressure swing adsorption (PSA) unit disposed downstream the furnace, wherein the PSA unit is configured to receive the crude process gas, or a gas derived therefrom, and produce a hydrogen product stream and a PSA offgas.