Abstract: Disclosed is a packing made up of a stack of plates, having been shaped to form corrugations in the plate and assembled to form a cross-corrugated packing block for a mass and/or heat transfer application, wherein the material of the packing plates is an open-pore metal foam, and in that the specific surface area of the packing is greater than 500 m2/m3 and in that the thickness (e) of the plate is less than 2 mm before the shaping operation.

Abstract: A device for centrifugal compression of a working gas comprising a plurality of centrifugal compressors forming a plurality of compression stages and a plurality of drive motors for driving the compressors, the device comprising a gas circuit comprising a first pipe for supplying gas to be compressed into the first compressor, the gas circuit comprising a second pipe for discharging the gas compressed therein, the second pipe being connected to an inlet of a second compressor in order to carry out a second compression, the gas circuit comprising a third, cooling, pipe for transferring a fraction of the gas compressed in said compressor into said at least one first motor in order to limit heating thereof, the gas circuit comprising a fourth pipe for recovering the gas that has circulated in the first motor and a downstream end connected to an inlet of a second motor for transferring the gas into same in order to limit the heating of second motor.

Abstract: A device configured to be interposed between a lower layer and an upper layer of particles arranged inside a cylindrical shell, so as to limit or prevent the migration of particles between the layers.

Abstract: The invention relates to a tank for storing a two-phase cryogenic mixture of liquid and gas, comprising a first casing, at least one drawing pipe, a tank filling circuit, the tank comprising a sensor assembly measuring the pressure in the first casing, the tank comprising a pipe for pressurizing the internal casing, comprising an upstream end connected to the lower end of the first casing and a downstream end connected to the upper part of the first casing, the pressurization line comprising at least one regulating valve and a heater, in particular a vaporization heat exchanger. The invention is characterized in that the regulating valve is configured to automatically maintain the pressure in the first casing at a minimum value by ensuring, when the pressure in the first casing is lower than said first value, a circulation of liquid taken from the first casing in the heater and a re-injection of said heated fluid into the first casing.

Abstract: Device for supplying pressurized fluid, including a first valve housing an internal fluid circuit, the device including a second valve having an internal circuit and forming a physical entity distinct from the first valve. The first and the second valve including respective coupling members forming a detachable male/female quick-connection system for the second valve on the first valve. The two valves being configured such as to place their internal circuits in communication when the second valve is coupled to the first valve via the quick-connection system.

Abstract: Synthesis of silanes with more than three silicon atoms are disclosed (i.e., SinH(2n+2) with n=4-100). More particularly, the disclosed synthesis methods tune and optimize the isomer ratio by selection of process parameters such as temperature, residence time, and the relative amount of starting compounds, as well as selection of proper catalyst. The disclosed synthesis methods allow facile preparation of silanes containing more than three silicon atoms and particularly, the silanes containing preferably one major isomer. The pure isomers and isomer enriched mixtures are prepared by catalytic transformation of silane (SiH4), disilane (Si2H6), trisilane (Si3H8), and mixtures thereof.

Abstract: Furnace operation includes consecutive cycles of a heating step, a stopping step and a restarting step. The fuel and/or the oxidizing agent is preheated upstream of the furnace by indirect exchange with the discharged fumes through a medium passing through a chamber. A first wall separates the fumes from the medium in the chamber. The fuel and/or oxidizing agent is separated from the medium in the chamber by a second wall. During restarting, the medium's flow rate Dm is regulated to limit the heating rate of the first wall until it reaches the operational temperature at an end thereof.

Abstract: A method of operating an ironmaking or steelmaking plant with low CO2-emissions is provided. Hydrogen and oxygen are generated by water decomposition and at least part of the generated hydrogen is injected as a reducing gas into one or more ironmaking furnaces with off-gas decarbonation and reinjection into the furnaces of at least a significant part of the decarbonated off-gas and at least part of the generated oxygen is injected as an oxidizing gas in the one or more ironmaking.

Abstract: The present invention discloses an air separation control system and control method comprising: multiple air separation plants for air separation; multiple local controllers, respectively corresponding to the multiple air separation plants; each local controller being located locally at the air separation plant corresponding thereto, and being in communicative connection with the corresponding air separation plant, for the purpose of locally controlling the air separation plant; and a remote optimization controller, in communicative connection with each local controller separately; the remote optimization controller at least comprising a communication module, a prediction module and a control module; the remote optimization controller being able to perform data exchange with and predictive control of the multiple air separation plants simultaneously via the local controllers.

Abstract: A method and apparatus for transferring a first liquid removed from an outlet of a first distillation column to an inlet of a second distillation column is provided. The second distillation column operates at a higher pressure than the first distillation column, and the inlet of the second distillation column is at higher elevation as compared to the outlet of the first distillation column. The method advantageously transfers the first liquid from the outlet to the inlet by mixing with a sufficient amount of a lower density second liquid that results in a mixed liquid having a reduced density as compared to the first liquid.

Abstract: An enclosure suitable for thermally insulating at least one distillation column comprising an elongate parallelepipedal framework and at least one part of a distillation column inside the framework, the enclosure or at least the lower part of the enclosure serving as support for the lifting means for installing elements in the column or for adding another part of the section of the column to that part of the column that is present in the enclosure or for adding another part of the enclosure.

Abstract: Process for eliminating the evaporation of a liquefied natural gas stream during the transfer thereof into a storage facility, comprising the following steps: Step a): liquefaction, by means of a refrigeration cycle, of a natural gas stream and of a nitrogen stream in a main heat exchanger; Step b): cooling of the liquefied natural gas stream from step a) in a second heat exchanger by circulation of said liquefied natural gas stream countercurrent to a liquid nitrogen flow that is vaporized while cooling said liquefied natural gas stream; wherein the liquid nitrogen flow used in step b) is from step a).

Abstract: A process for regulating a unit for the production of oxygen from atmospheric air comprising N adsorbers (, N being = or >2, each according to a PSA, VSA or VPSA adsorption cycle with an offset of a phase time, the regulation process including determining a value of differential pressure characteristic of a step of the adsorption cycle for each adsorber, calculating the difference between the values of differential pressures characteristic of the various adsorbers, comparing this difference with a target value and, in the event of a dissimilarity being noted, correcting by modification of the transfer of at least one oxygen-rich gas stream between adsorbers or optionally between adsorber and storage tank.

Abstract: The invention relates to a pressurized gas container, having an internal volume for storing gas under pressure comprising a valve for distributing fluid, a pressure sensor for measuring the pressure of the gas and delivering at least one measurement signal, a microprocessor for processing the measurement signal delivered by the pressure sensor and a digital display. The microprocessor converts the measurement signal delivered by the pressure sensor into a measured pressure value, and compares the measured pressure value with at least one preset threshold-pressure value. The digital display displays at least one predefined term reflecting the amount of gas in the container, which is dependent on the comparison performed by the microprocessor.

Abstract: A method for operating an air separation unit having both a startup phase and a steady-state operating phase is provided.

Abstract: A method for improved operation of a natural gas liquids stabilizer column, particularly a small-scale, is provided.

Abstract: A plant for separating gases from the air comprises, in the direction of circulation of the stream of air: a compression means for compressing the stream of air to a pressure P1 of between 1.15 bar abs and 2 bar abs, a TSA adsorption unit, and a cryogenic distillation unit, with the adsorption unit comprising at least two adsorbers A1 and A2 each having a parallelepipedal casing arranged horizontally and comprising: an air stream inlet and outlet, two fixed bed adsorbent masses each likewise parallelepipedal with faces parallel to the faces of the casing, and a set of volumes allowing the stream of air to traverse the two adsorbent masses horizontally, in parallel, over the whole cross section of each of the adsorbent masses and throughout their thicknesses.

Abstract: The invention relates to a gas/liquid separation column extending mainly along a vertical axis and comprising an external wall delimiting an internal space in which are arranged at least one first contact member in which the liquid and the gas are brought into contact and at least one dispensing device configured to collect the liquid resulting from the first contact member and to distribute it to a second contact member. At least one box for separating a two-phase fluid is arranged in the internal space of the column between the first contact member and the dispensing device against the wall of the column fed by a duct which passes through a wall of the separation box.

Abstract: A method for liquefying ammonia can include the steps of: providing a pressurized carbon dioxide stream from a power generating facility; expanding the pressurized carbon dioxide stream to a lower pressure that is sufficient to produce a dual phase carbon dioxide fluid; introducing the dual phase carbon dioxide fluid to a gas-liquid separator; withdrawing a liquid stream from the gas-liquid separator; and liquefying an ammonia gas stream in an ammonia liquefier by indirect contact with the liquid stream from the gas-liquid separator, thereby forming a liquid ammonia stream and a gaseous carbon dioxide stream.

Abstract: A reformer tube for producing synthesis gas by steam reforming of hydrocarbon-containing feed gases, in which a structured stream reforming catalyst is used, is proposed. According to the invention, a heat exchanger tube is arranged in the interior of the structured catalyst, with the feed gas stream flowing firstly through the structured catalyst and subsequently in countercurrent through the heat exchanger tube. This improves the heat exchange between the synthesis gas product stream and the structured catalyst and the feed gas stream flowing through it, especially in the radial direction.