Abstract: The installation comprises, along a vertical frame (1), locations for gas cylinders, these locations being partially defined by a rack that can be used for transporting the cylinders (7), each location comprising, on the frame, a holding device (9, 10) that can be swung between a lockable closed configuration preventing the insertion or extraction of a cylinder, and an open configuration.

Abstract: In this process the material is passed through a precalcination device equipped with at least one fuel injector at the outlet of which a fuel injection zone is formed, then the at least partially calcined material is passed into the rotary kiln which at its downstream end, is equipped with a primary combustion unit. At least one oxygen rich fluid with an oxygen concentration by volume higher than that of the products of combustion from the rotary kiln is injected near to the injection zone so that the oxygen rich fluid can supply from 1% to 40%, and preferably form 1 to 10% of the stoichiometric amount of oxygen needed for the combustion of the fuel injected by the injector.

Abstract: In this process for purifying a gas by adsorption of a first impurity and of a second impurity, at least two main adsorbers (5A, 5B) and at least one auxiliary adsorber (6A, 6B) are used, the main adsorbers comprising a packing (8A, 8B, 9A, 9B) for adsorbing the first and second impurities. During at least a first step, the gas is purified by adsorbing the two impurities by passing through at least a first (5A, 5B) of the main adsorbers without passing through a first auxiliary adsorbers (6A, 6B), and simultaneously the second main adsorber (5A, 5B) and the or each auxiliary adsorbers (6A, 6B, 6) is regenerated in parallel, then, during a second step, at least some of the gas flow is purified by adsorption of the two impurities by passing in series through the first main adsorber (5A, 5B) and through the first auxiliary adsorber (6A, 6B). Application, for example, to the purification of air for the purpose of its distillation.

Abstract: Provided herewith is a method for preheating a glass mixture to be fed into a glass furnace. The method comprises separately preheating at least some of the materials which comprise the load, and then subsequently remixing the preheated materials and passing the load to the glass furnace.

Abstract: A method for operating a boiler using oxygen-enriched oxidants includes introducing oxygen-enriched air, or oxygen and air, in which the oxygen concentration ranges from about 21% to about 100% by volume. Fuel and oxygen-enriched air are introduced into the combustion space within the steam-generating boiler. The fuel and oxygen-enriched air is combusted to generate thermal energy. At least a portion of the flue gases are collected and at least a portion are recirculated through the boiler. In the steam-generating boiler, the oxygen-enriched oxidant is introduced at one or more locations within the radiation zone and the convection zone of the boiler. Additionally, flue gas is collected and recirculated into one or more locations within the radiation zone and/or the convection zone of the boiler.

Abstract: A gas separation plant includes, downstream of the line for feeding the gas separation module with a compressed gas mixture, a liquid particle separation device which includes a liquid detector, for example, of the optronic type, delivering an output signal, connected to an alarm device and to a central control unit of the plant.

Abstract: A pressure swing adsorption cycle in which a regeneration phase is terminated by at least one final step in which a residual gas is withdrawn counter-current to the adsorber (1 to 3). A variable portion of the residual gas is recycled, representing from 0 to 30% of the flow of the purified gas product, into the impure gas to be treated, the rest of this residual gas constituting a purge. The duration of the cycle is reduced when this recycling is carried out, the more so as the recycle flow rate is the greater. The cycle has particular application in the production of hydrogen, helium or neon.

Abstract: A process for producing a production gas mixture comprising hydrogen, by thermocatalytic decomposition of an initial mixture which comprises at least one hydrocarbon, comprising the steps of: 1 feeding the initial mixture to a system comprising, in succession, at least a first reaction zone R1 and a second reaction zone R2, each of the reaction zones including a catalyst, comprising a concentration of a metal, which is capable on contact with the hydrocarbon of forming carbon nanotubes, wherein the zones R1 and R2: are separate within at least two different consecutive reactors or consecutive within the same reactor, and are subjected to at least one of an increasing temperature gradient and an increasing metal concentration gradient in the catalyst; 2 reacting the initial mixture in the first catalytic reaction zone R1 to form a first intermediate mixture comprising an enhanced H2 concentration compared to the initial mixture; 3 feeding the first intermediate mixture into the second catalytic reaction z

Abstract: Process and device for connecting at least one supply reservoir (A), such as a storage reservoir, to at least one receiving reservoir (B), such as a tank truck, for the transfer of a fluid from the at least one supply reservoir (A) to the least one receiving reservoir (B) comprising at least one transfer line (2) for fluid comprising at least one first member (3) for connection to the receiving reservoir (B); a valve (V2) for connection to the atmosphere connected to the transfer line (2); and an analyzer (10) connected to the transfer line (2) particularly to monitor continuously during the transfer the purity of the transferred fluid.

Abstract: A cryogenic distillation apparatus comprising a system of columns (9, 11) also includes at least one external source of a gas other than a column of the system and means for sending this pressurized gas to the first pump (17) in order to serve as barrier gas for a pump (17, 23, 25, 27) and/or at least one external source (20) of liquid other than a column of the system and means for vaporizing at least one portion of this liquid and for sending the vapour thus formed to the first pump in order to serve as barrier gas and/or means (3) for withdrawing a liquid from a column of the system and for vaporizing at least one portion thereof downstream of the first or of the second pump in order to deliver a barrier gas (21) for the first pump.

Abstract: Provided is an apparatus for grinding containers that contain a powder. The apparatus includes (i) a grinder, (ii) an enclosure for confinement of the powder released during grinding, (iii) a supply of an inert atmosphere, and (iv) a conduit which directs the inert atmosphere from the supply into the enclosure. Also provided is a process for grinding containers that contain a powder, the grinding being carried within an atmosphere of an enclosure.

Abstract: This apparatus (3A, 3B) is for heat exchange between at least one first fluid available at a temperature at about ambient and at least one second fluid available at a cryogenic temperature below −20° C. It comprises structure alternately to circulate the first fluid through heat exchange material in an overall centripetal manner relative to a general central axis (X-X) of the apparatus (3), from a radially external inlet (17) of the apparatus, and structure to circulate the second fluid through the heat exchange material in an overall centrifugal manner relative to said central axis, from a radially internal inlet (18) of the apparatus. Use in cooling regenerators and exchangers, and if desired for simultaneous purification, of atmospheric air to be distilled.

Abstract: A process for the surface treatment of a running substrate by an electrical discharge created between two roller electrodes, comprising a first roller electrode and a second roller electrode, in a gas mixture comprising the steps of passing the substrate in between the two roller electrodes by applying it against the first roller electrode; injecting the gas mixture between the rollers to apply a first surface treatment to the substrate; passing the substrate in between the two roller electrodes by applying it against a second roller electrode; and injecting the gas mixture between the rollers to apply a second surface treatment to the substrate.

Abstract: The invention relates to an open-type protective cowling for a fluid container, particularly for a gas cylinder, made up of a cowling body (1) made of polymer comprising an insert (2) made of metal or metal alloy with a tapping (10). As a preference, the insert (2) is essentially in the shape of a ring with a tapped internal wall and the cowling body (1) is overmolded around the tapped insert (2). In addition, the insert (2) may have one or more recesses (7) and/or one or more strengtheners (6) on its external peripheral wall. Furthermore, the invention also relates to a gas cylinder equipped with such a protective cowling, and to the method for manufacturing such a protective cowling.

Abstract: Processes and systems to recover at least one perfluorocompound gas from a gas mixture are provided. In one embodiment the inventive process comprises the steps of a) providing a gas mixture comprising at least one perfluorocompound gas and at least one carrier gas, the gas mixture being at a predetermined pressure; b) providing at least one glassy polymer membrane having a feed side and a permeate side; c) contacting the feed side of the at least one membrane with the gas mixture; d) withdrawing from the feed side of the membrane as a non-permeate stream at a pressure which is substantially equal to the predetermined pressure a concentrated gas mixture comprising essentially the at least one perfluorocompound gas; and e) withdrawing from the permeate side of the membrane as a permeate stream a depleted gas mixture comprising essentially the at least one carrier gas.

Abstract: A kiln is provided with oxidant injection locations upstream of air blowers which blow air into the kiln. The addition of oxygen into the kiln increases the cooling capacity of a clinker cooler, and enhances combustion in the kiln.

Abstract: Novel compounds capable of carrying and releasing nitrogen oxide (NO) in a biological medium, their use for implementing a therapeutic treatment method or a diagnostic method applied to a human or animal body, and for making medicines useful for treating or preventing disorders affecting the human or animal cardiovascular, nervous, immune, renal or pulmonary system, specifically, an organometallic complex of nitrogen oxide, wherein the cationic part is of the formula (I) in which x=0 or 1; x′=2 or 3; y=0, 2 or 3; z=0 or 1; with the condition that, if y=0 (or z=0) then z=0 (or y=0; respectively); R is a group chosen from the group formed by: a hydrogen atom, —(CH2)2COOH and R1, R2, R3 and R4 are groups chosen from the group formed by: a hydrogen atom and alkyl groups comprising from 1 to 4 carbon atoms; and M2+ is a divalent cation Fe++ or Co++.

Abstract: An installation for the treatment of fluid having a receptacle (1) defining a non-vertical portion of a path for fluid through at least two adjacent masses (A; B; C) of particulate materials, typically different from each other, each mass being in direct contact with its neighbor or neighbors, without the interposition of a separating grid. The installation is particularly useful for the separation or drying of air.

Abstract: This liquid-gas manifold comprises a single container (24) of roughly cylindrical overall external shape, designed to define an annular space between its side wall and the interior wall (1) of the column and having a perforated bottom (25), means for connecting the container (24) to the interior wall (1) of the column, and means allowing the gases to be transferred from the said annular space to the space located above the container (24).

Abstract: The invention concerns a device for exciting a gas comprising a hollow structure (24) forming a waveguide to be connected to a microwave generator and means for circulating a gas through the structure. The gas circulating means comprise an assembly of at least two hollow tubes (46, 48) made of dielectric material respectively passing through said structure (24) in the zones wherein the amplitude of the electric field associated with the incident wave is substantially the same.