Abstract: In a process for producing a mixture containing at least 10% carbon monoxide (73) by cryogenic separation of a feed gas containing at least carbon monoxide, hydrogen and methane, the feed gas (1) is separated to produce a first gas enriched in hydrogen (71), the feed gas is scrubbed in a methane wash column (7), a carbon monoxide enriched stream (13) from the bottom of the methane wash column is separated (19) to produce a stream further enriched in carbon monoxide (23), the stream further enriched in carbon monoxide is separated to form a carbon monoxide rich stream (31,49) and a liquid methane stream (27), at least part (72) of the carbon monoxide rich stream is mixed with the first gas enriched in hydrogen to form the mixture containing at least 10% carbon monoxide as a product stream.

Abstract: Safe filling is provided by a housing (8) controlling the pump (6) of the mobile tank (1) receiving, via a secondary hose (10), the pressure prevailing in the container (2) to be filled, a programmable logic enabling the pump to operate when the pressure measured in the container is within a predetermined range, adaptable according to the type of container. The invention is applicable in particular to gas containers.

Abstract: The invention relates to an expansion valve block which is equipped with coordinated means (8) for isolating the high-pressure circuit (3) and the low-pressure circuit (4) such that, when the gas delivery inlet is opened and closed, the two circuits are automatically controlled using the sequence that best guarantees the immunity of the installation.

Abstract: Apparatus and methods of supplying a highly enriched oxygen gas steam on board an aircraft. The gas stream is generated by an oxygen concentrator which concentrates atmospheric air by using at least one adsorber. The adsorber is made of a faujasite zeolite and has a Si/Al ratio between 1 and 1.5. The faujasite zeolite is also exchanged with silver by about 10%. Once generated, the gas stream is supplied to the airways of a person onboard an aircraft.

Abstract: According to the inventive method, incoming air enters (via 16) the separation unit (14); at least one fraction of said incoming air is supplied from the gas turbine (2), and at least one gas flow (via 20,24), which is enriched with nitrogen, is extracted from the separation unit (16); heat exchange occurs in a first exchanger (56) between the fraction of incoming air from the gas turbine (2) and a liquid fraction (58) to be heated in order to obtain a first heated liquid fraction (58); said heated liquid fraction (58) is added to a liquid mixture fraction (48) in order to obtain a liquid fraction to be cooled (60); heat exchange occurs between said liquid fraction which is to be cooled and the nitrogen-enriched gas flow in a second exchanger (50).

Abstract: Methods of supplying an oxygen rich mixture to the occupants of an aircraft. The mixture is produced through a pressure swing adsorption system which has both an adsorption/production phase and a desorption/regeneration phase. The duration of one cycle of the adsorption system is less than ten seconds. The system makes use of a high-performance adsorbent which has a particle size of less than about 0.8 mm. The feed air which is introduced to the system has an inlet temperature between 50° C. and 90° C.

Abstract: The invention relates to a method of protecting equipment intended to operate at high temperature in the presence of a fluid containing at least one hydrocarbon and/or carbon monoxide against corrosion by metal dusting, method in which pieces of the equipment are made from an alloy containing nickel, iron, chromium and/or aluminum, and in which said pieces of the equipment are protected from said corrosion by a protective coating. This method is characterized in that said equipment pieces protected in this way are connected to each other by means of joining pieces, said joining pieces being protected beforehand by a protective coating over at least part of their surface intended to be brought into contact with said fluid at high temperature, and in that each of the connections intended to be subjected to said corrosion is produced by external welding of the ends of the joining piece with said pieces of equipment.

Abstract: A polyimide MMC membrane useful for the production of oxygen-enriched air or nitrogen-enriched-air, for the separation of carbon dioxide from hydrocarbons or nitrogen, and the separation of helium or hydrogen from various streams. Membranes of polyimide polymers, such as polyimide polymers sold under the tradename P-84, are mixed with molecular sieve materials, such as SSZ-13, to make MMC membranes. The MMC membranes of the invention provide improved membrane performance compared to polymer only membranes, particularly when used to form asymmetric film membranes or hollow fiber membranes. The MMC films exhibit consistent permeation performance as dense film or asymmetric membranes, and do not interact with components of the process streams, such as organic solvents. The membranes of the invention exhibit particularly surprisingly good selectivity for the fluids of interest.

Abstract: Production plants for treating gas mixtures and methods of their operation. The plant's treatment unit is operated in periods when the cost of electricity is either above a first level or below a second level. At some point when the cost is below the second level, part of the fluid is stored in a storage tank. This stored liquid is supplied to the customer when the cost is above the first level. When the cost is below the second level, a fluid with predefined properties is produced by the treatment unit. When the cost is above the first level, the power consumption of the treatment unit is reduced and a less ideal fluid is produced.

Abstract: Methods for treating a gas mixture of at least propylene and propane, in order to separate the propylene from the propane. The gas mixture is brought into contact with a membrane enables the selective permeation of the propylene with respect to the propane. A propylene-enriched permeate and a propane-enriched retentate is formed. The propylene concentration of the permeate in the membrane is then reduced with a sweeping gas.

Abstract: Process and apparatus for optimization of integrated air separation systems. In an integrated process for the compression, cooling, and purification of air, an adiabatic compressor compresses an air stream to produce a compressed air stream. The compressed air stream is used to warm a first pressurized stream at a first pressure and a second pressurized stream at a second pressure. The produced streams include a first warmed pressurized stream, a second warmed pressurized stream, and a cooled compressed air stream. The first warmed pressurized stream is gaseous and is expanded in a turbine. At least part of the work produced by the turbine is used to power the adiabatic compressor. The cooled compressed air stream is further cooled by a cooling unit by heat exchange with water, and then purified in a purifying unit using a TSA process.

Abstract: Integrated air separation units with a petrochemical process. This invention provides an integrated process and gas treatment process wherein at least one first pressurized gas derived from a first process at a first site is expanded. Using the work generated by the expansion of at least one pressurized gas, a first gas compressor at the first site is driven, operates, and removes compressed gas from the first gas compressor. At least part of the compressed gas from the first gas compressor is sent to a gas treatment unit located at a remote second site. At least part of the compressed gas sent from the first site to the second site is treated in the gas treatment unit. At least one fluid from the gas treatment unit is removed and at least part of the fluid removed from the gas treatment unit is sent to the first site.

Abstract: Method for producing a metal silicon (oxy)nitride by introducing a carbon-free silicon source (for example, (SiH3)3N), a metal precursor with the general formula MXn (for example, Hf(NEt2)4), and an oxidizing agent (for example, O2) into a CVD chamber and reacting same at the surface of a substrate. MsiN, MSIo and/or MSiON films may be obtained. These films are useful are useful as high k dielectrics films.

Abstract: The invention provides an installation for the production of hydrogen and/or carbon monoxide and/or a mixture of hydrogen and carbon monoxide, by separating a mixture to be processed (1) which contains at least carbon monoxide and hydrogen. Said installation comprises a production apparatus (9), for producing a feed mixture (3), a separating unit (BF), means for supplying the feed mixture to the separating unit, means for collecting hydrogen and/or carbon monoxide and/or a mixture of both products (7, 8), derived from the separating unit, means for drawing off at least one recycling gas (6) from the separating unit, means for returning said recycling gas upstream of the separating unit, for separating said gas simultaneously with the feed mixture from the production apparatus and means for modifying the rate and composition of said feed mixture, by modifying the operation of the production apparatus, according to the rate and composition of said at least one recycling gas.

Abstract: Methods and apparatus for air separation by cryogenic distillation in a double or triple air separation column. The column in the system with the highest operating pressure is said to be operating at medium pressure. All the air to be distilled is pressurized to a high pressure, which is about 5 bar greater than the medium pressure. The air is purified at this high pressure, and a portion of the purified air is cooled in a heat exchange line, while another portion is expanded in a turbine. Part of the cooled air is drawn from the exchange line with a cold booster, which is mechanically coupled to at least one turbine. An energy dissipation device is also provided which is coupled to the turbine not coupled to the cold booster. The energy dissipation device is either another booster, an oil break system, or an electrical generator.

Abstract: A process and a device for melting aluminum where solid aluminum is melted in a furnace to form aluminum melt pool. The temperature and carbon monoxide (CO) concentration of the flue gas generated in the melting process is detected and examined for variations. Using this variation information, it is determined if aluminum oxides have formed on the surface of the aluminum melt pool and if they have, the melting process is regulated accordingly.

Abstract: Process simulators, including a novel process simulator that utilizes simplified mathematical correlations to predict the performance of equipment or subsystems in a process unit. The process simulator comprises a process correlation that is a mathematical response model for a discrete process system in a process unit. The process correlation is developed by obtaining operating data over a range of operating conditions of the process unit and regressing the operating data to form the mathematical response model. The process simulator calculates a number of output parameters using a number of input parameters. The process simulator outputs the output parameters so they can be used by operating personnel to evaluate the current operations of the process plant and make operating decisions.

Abstract: A method and a device for cooling various articles. A gas stream is cooled with liquid nitrogen and the cooled stream is then applied to articles in order to cool them.

Abstract: A heat exchange fin spacer. The fin may be sandwiched between two plates in a brazed-plate heat exchanger. The fin is based upon a corrugated product having wave legs which, when mounted, define flow channels for a gas to be condensed. The fin has at least one condensed liquid drainage channel on the wave legs and deviation elements that drain the liquid towards at least one lateral edge of the wave legs. The deviation elements are provided with at least one leading edge and/or at least one inclined trailing edge. The invention is suitable for use in the main heat exchanger of an air separation unit.

Abstract: The invention relates to a method for the provision of gas under pressure, by vaporisation of a cryogenic liquid from at least two cryogenic separation devices (A, B, C, D). Each device comprises a heat exchanger (1) and a system of columns (2, 3). In a first mode of operation, a cryogenic liquid is withdrawn from the columns in each cryogenic separation device, at least a part of which is pressurised (7, 8) to give a pressurised cryogenic liquid (9) and at least a part of the cryogenic liquid under pressure is vaporised in the heat exchanger (1) to give a part of gas under pressure (10). A cryogenic liquid is sent (6) from the cryogenic separation device to a common store (12) and at least one liquid (28A, 28B, 28C, 28D) coming from the store is vaporised in the exchange line (1) in at least one of the cryogenic separation devices.