79 results about "Gaseous oxygen" patented technology

The utility model discloses a multiphase oxidation soil remediation system, which belongs to the technical field of soil remediation, and comprises a casing, a feeding channel and a charging pipe which are oppositely arranged at the top of the casing, and a rotating rod movably connected to the middle of the inner side of the casing; the feeding assembly is arranged on the outer side of the rotating rod; the feeding assembly comprises a first material blocking unit and a second material blocking unit which are arranged on the side wall of the feeding channel and the side wall of the feeding pipe, and a pushing unit arranged between the first material blocking unit and the rotating rod and between the second material blocking unit and the rotating rod. The first material blocking unit comprises an inserting groove formed in the top face of the feeding channel or the feeding pipe, a material blocking plate movably arranged in the inserting groove, and a reset part arranged on the side wall of the material blocking plate. The feeding assembly further comprises a gas conveying unit arranged on the outer side of the rotating rod. Through the arrangement of the feeding assembly, soil is fully mixed with a solid-liquid oxidizing agent and a gaseous oxidizing agent, so that the purification effect on the soil is improved.

The invention relates to a device for safely actuating a gaseous oxygen supply container in an aircraft for dispensing oxygen to a user, the container (1) being intended to store pressurized oxygen at a first oxygen pressure and having an opening (2) sealed by a seal (9). The apparatus comprises: a manifold (4) connected in fluid communication with the seal (9) and configured to receive a flow of oxygen from the opening (2) when the seal (9) is pierced, the manifold (4) comprising an oxygen flow circuit (11), an oxygen flow circuit connected in fluid communication with the seal (10) and having an outlet (14) at a second oxygen pressure lower than the first pressure and a pressure reducer (13) having means (12, 15, 16) for regulating the oxygen pressure between the opening (2) and the outlet (14) during flow; and an actuator (7) located in the opening (2), the actuator being configured to pierce the seal (9) when triggered to allow oxygen to flow from the container (1) through the opening (2) to the outlet (14), the oxygen flow circuit (11) comprising a calibration aperture (17) provided at the outlet (14), the calibration aperture is configured to prevent any accumulation of oxygen at a third pressure between the first pressure and the second pressure without triggering the actuator (7) in the event that oxygen flows to the outlet (14).

A bi-functional reactor and method for producing liquid fuels by reducing CO2 and oxidizing CH4. The reactor includes a vessel having first and second compartments separated by a membrane permeable to water. The first compartment is a catholyte chamber having an inlet, outlet, an electrode for reduction, and catholyte solution. The inlet of the catholyte chamber allows CO2 to flow as a feedstock into the first compartment, while the outlet allows excess CO2 and gaseous reduction products to exit the compartment. The second compartment is an anolyte chamber having an inlet, outlet, an electrode for oxidation, and anolyte solution. The inlet of the anolyte chamber allows CH4 to flow as a feedstock into the second compartment, while the outlet allows excess CH4 and gaseous oxidation products to exit the compartment. CO2 is reduced in the catholyte chamber and CH4 is oxidized in the anolyte chamber to form liquid fuels.

The embodiment of the invention relates to the technical field of refrigeration, in particular to a low-temperature propellant storage system and method. The system is characterized in that a compressor compresses helium, a first part of compressed helium flows into a circulating refrigeration assembly, and a second part of compressed helium flows into a heating assembly; the circulating refrigeration assembly is used for cooling the first part of helium, liquid hydrogen stored in the liquid hydrogen storage tank and liquid oxygen stored in the liquid oxygen storage tank are cooled through the cooled first part of helium, and the cooled first part of helium flows back to the compressor; and the heating assembly is used for heating liquid oxygen flowing out of the liquid oxygen storage tank and liquid hydrogen flowing out of the liquid hydrogen storage tank through the second part of helium to obtain gaseous oxygen and gaseous hydrogen, the gaseous oxygen and the gaseous hydrogen are conveyed to the engine, and the second part of helium flows back to the compressor after heating treatment. According to the technical scheme, high-quality cooling capacity in the storage box can be effectively utilized, and the circulating refrigeration efficiency is improved.

A method of additive manufacture is disclosed. The method may include restricting, by an enclosure, an exchange of gaseous matter between an interior of the enclosure and an exterior of the enclosure. The method may further include running multiple machines within the enclosure. Each of the machines may execute its own process of additive manufacture. While the machines are running, a gas management system may maintain gaseous oxygen within the enclosure at or below a limiting oxygen concentration for the interior.

A method of additive manufacture is disclosed. The method may include restricting, by an enclosure, an exchange of gaseous matter between an interior of the enclosure and an exterior of the enclosure. The method may further include running multiple machines within the enclosure. Each of the machines may execute its own process of additive manufacture. While the machines are running, a gas management system may maintain gaseous oxygen within the enclosure at or below a limiting oxygen concentration for the interior.

Process and apparatus for the separation of air by cryogenic distillation In a process for the separation of air by cryogenic distillation, air is separated by distillation in a column system comprising at least a first column (K1) operating at a pressure of at least 4 bar abs, the air (1) arriving in gaseous form in the first column, nitrogen originating from the top of the first column is condensed, at least partially, in a top condenser of the column against a liquid which is vaporized by heat exchange with the top condenser (C) of the first column and a gaseous oxygen stream (21) from an external source cooled in the heat exchanger is sent to a bottom reboiler (V) of the first column in order to be condensed by vaporizing bottom liquid of the first column.

In a process for separating air by cryogenic distillation, air is separated by distillation in a simple column (K1), nitrogen coming from the top of the column condenses at least partially in a top condenser (C) of the column when it meets bottom liquid (9) in the column that has been expanded (V1) and sent to the top condenser, a liquid nitrogen flow (15) is drawn off from the column, pressurised, and vaporised in a heat exchanger (E), and a gaseous oxygen flow (3, 7) from an external source (EL) cools and liquefies in the heat exchanger, by exchanging heat with the liquid nitrogen to be vaporised, is expanded and is sent to the top condenser of the column.

Oxygen generation systems for use in low-gravity environments include a cell stack having an anode and a cathode. An anode-side phase separator and a cathode-side phase separator are each fluidly coupled to outlets of the cell stack. The anode-side phase separator separates a mixture into liquid water and gaseous oxygen and the cathode-side phase separates a mixture int liquid water and gaseous hydrogen. A ducting system is configured to house the cell stack and the cathode-side phase separator, a hydrogen sensor is arranged at an outlet of the ducting system, and a controller is configured to stop oxygen generation at the cell stack when a concentration of hydrogen is detected at or above a threshold level at the hydrogen sensor at the outlet of the ducting system.

The invention relates to a method of oxygen hardening of a Group IV metal, comprising the steps of: providing a workpiece of a Group IV metal in its final shape; oxidizing the Group IV metal in an oxidizing atmosphere at a first temperature using a gaseous oxidizing species having an upper temperature limit of up to 800°C for an oxidation duration of at least 10 minutes to provide a non-delaminated Group IV metal oxide on the surface of the workpiece, wherein the first temperature is in the range of 500°C and the upper temperature limit of the gaseous oxidizing species; diffusing oxygen from the non-delaminated Group IV metal oxide into the Group IV metal in an inert atmosphere at a second temperature in the range of 500°C to 800°C and at a partial pressure of the gaseous oxidizing species of up to 10"4mbar for a diffusion duration of at least 0.1 hour to provide a surface diffusion zone comprising oxygen in solid solution. In another aspect, the invention relates to a Group IV metal component comprising a material core having a core hardness and a surface hardness of at least the core hardness + 200 HV 0.025 The component is obtainable in the method of the invention.

A method of partitioning ruthenium from used nuclear fuel that includes dissolving a used nuclear fuel in a dissolution acid to form a main process stream and an undissolved solid composition comprising ruthenium and one or more additional fission products, heating the undissolved solid composition into an operating temperature range in a gaseous oxidizing environment such that at least some of the ruthenium oxidizes and phase separates, thereby forming a ruthenium containing gas and capturing the ruthenium containing gas.

The invention relates to a method for maintaining the functionality of a vehicle system that includes a voltage changer for defining and changing an electrical voltage. At least one parameter of a medium inside the housing of the voltage changer is monitored for the detection of a heat event. Furthermore, a heat event mitigation measure is initiated if the actual value of the at least one parameter exceeds a threshold value that characterizes the potential future occurrence of the heat event or the heat event that has already occurred.As a measure to mitigate heat events, the medium in the interior is also changed by introducing a gaseous oxygen displacer into the interior, which blocks the occurrence of the heat event in the interior or contains the heat event that has already occurred in the interior in order to maintain the functionality of the vehicle system.

A system and method for the liquefaction and densification of oxygen for use in space vehicle applications is provided that uses high pressure air or synthetic air as the refrigerant source. The disclosed system and method employs a heat exchanger arrangement comprising a first heat exchange device configured to liquefy the high pressure gaseous oxygen stream and at least a portion of the high pressure gaseous air stream via indirect heat exchange with a refrigerant stream to yield a liquid oxygen stream and a liquid air stream. The heat exchanger arrangement also includes a second heat exchange device configured to densify the liquified oxygen stream via indirect heat exchange with the liquid air stream which yields the densified liquid oxygen and a cold vaporized air stream. The refrigerant stream comprises a mixture of the exhaust streams from one or more turbines with the cold vaporized air stream.

A method for preparing a pharmaceutical composition having a drug-containing core encapsulated by one or more metal oxide materials is provided. The method comprises the following sequential steps: (a) loading particles containing a drug into a reactor; (b) applying a vaporized or gaseous metal precursor to the particles in the reactor; (c) performing one or more pump purification cycles on the reactor using an inert gas; (d) applying a vaporized or gaseous oxidant to the particles in the reactor; and (e) performing one or more pump purification cycles on the reactor using an inert gas. The temperature of the particles does not exceed 35°C. This produces a pharmaceutical composition comprising a drug-containing core encapsulated by one or more metal oxide materials.

Title of the invention: Process and apparatus for air separation by cryogenic distillation. In a process for air separation by cryogenic distillation, air is separated by distillation in a column system comprising at least one first column (K1) operating at a pressure of at least 4 bar abs. Air (1) enters the first column in gaseous form. Nitrogen from the top of the first column condenses at least partially in a column top condenser against a liquid that vaporizes by heat exchange with the top condenser (C) of the first column. A flow of gaseous oxygen (21) from an external source, cooled in the heat exchanger, is sent to a tank reboiler (V) of the first column to condense by vaporizing the tank liquid of the first column. Fig. 1

The present disclosure provides methods and apparatus for hydrothermal oxidation of organic matter. The method includes pumping organic matter in an aqueous stream into a first section of a reactor, pumping a gaseous oxidant into the first section of the reactor, maintaining conditions in the reactor at a pressure in a range from about 2 bar to about 250 bar and a temperature in a range from about 100°C to about 373°C, subjecting the organic matter in the aqueous stream and the gaseous oxidant to high intensity mixing in the first section of the reactor, transferring the organic matter in the aqueous stream and the gaseous oxidant to a second or subsequent substantially horizontally arranged tubular section of the reactor, wherein at least some of the organic matter containing aqueous stream is in a liquid phase and at least some of the gaseous oxidant is in a gas phase, and maintaining a rate of the liquid phase traveling through at least a portion of the second or subsequent section of the reactor at a maximum velocity of about 0.1 m / sec or maintaining a Reynolds number of the liquid phase traveling through at least a portion of the second or subsequent section of the reactor in a range from about 0 to about 10,000.

The invention relates to a method for controlled deposition of an oxide layer (80) of a target oxide (82) on a substrate (70) in a thermal laser epitaxy (TLE) system (100), the target oxide (82) comprising defined stoichiometry and being formed from one or more vaporized and / or sublimated source materials and oxygen derived from a gaseous oxidant (54), the TLE system (100) further comprises a reaction chamber (10) and one or more laser sources (20) for providing a laser beam (22) within the reaction chamber (10). The invention further relates to a TLE system (100) designed to carry out the method.

The invention relates to an internal compressed air separation device and a pressure control method, and is applied to the technical field of air separation. The device comprises a main condensation evaporator used for generating liquid oxygen; the heat exchanger is connected with the main condensation evaporator through a liquid oxygen transmission pipeline and is used for exchanging heat with liquid oxygen to generate gaseous oxygen; the silencer is connected with the heat exchanger through an oxygen transmission pipeline and connected with the external environment, and the silencer is used for conducting noise reduction on the oxygen in the oxygen transmission pipeline and discharging the oxygen to the external environment; a pressure measuring point is arranged on the oxygen transmission pipeline; and the first backflow pipeline is arranged between the liquid oxygen transmission pipeline and the main condensation evaporator, an adjusting valve is arranged on the first backflow pipeline, and the adjusting valve is interlocked with the pressure measuring point. According to the invention, the overpressure risk can be reduced, and the safety is improved.

The present invention provides an ozone-containing gas-liquid two-phase flow generation device for generating ozone using gaseous oxygen as a raw material, the ozone-containing gas-liquid two-phase flow generation device being provided with: an ozone-containing oxygen generation unit for generating ozone-containing oxygen from gaseous oxygen; an ozone condensation unit into which ozone-containing oxygen is introduced; a cooling unit that cools the ozone condensing unit so that the internal space thereof is in a temperature zone in which the oxygen is in a gaseous state and the ozone is in a liquid state; and a gas-liquid two-phase flow leading-out path for leading out, in a gas-liquid two-phase flow state, liquid ozone, which is obtained by liquefying ozone contained in ozone-containing oxygen via the ozone condensation unit, and ozone-containing oxygen (hereinafter referred to as ozone depleted oxygen), the ozone content of which is reduced by the liquid ozone. As a result, it is possible to provide an ozone-containing gas-liquid two-phase flow generation device and the like capable of continuously producing ozone.

Disclosed are a gas-phase hydrogen peroxide generation assembly and a substrate processing apparatus including same. The gas-phase hydrogen peroxide generation assembly may have a vaporization module and a fluid supply module. The vaporization module may be configured to convert liquid hydrogen peroxide into gas-phase hydrogen peroxide. The fluid supply module may include a first line configured to, in a first operation mode, supply the liquid hydrogen peroxide to the vaporization module. The fluid supply module may be configured to, in a second operation mode, discharge a residual of the liquid hydrogen peroxide to a drain using a discharge fluid. The residual may be generated in the first operation mode and remain in the first line.

The application relates to the technical field of nitrite synthesis, and discloses a synthesis method and a synthesis device of alkyl nitrite. The synthesis method comprises the following steps: firstly, mixing gaseous nitric oxide and gaseous oxygen to obtain a mixture through a first reaction; and then, mixing the mixture with alkyl alcohol to obtain alkyl nitrite through a second reaction. The synthesis method greatly shortens the reaction time, increases the yield of alkyl nitrite, does not have a complicated post-treatment process and a large amount of by-product nitric acid, and is beneficial to cost saving and time saving.

A metallic particle combustion energy production system (S1) comprising a set of elementary combustion reactors (6, 6b), each comprising a metallic particle burner coupled to a combustion chamber, means (1, 2, 3, 4) for selectively feeding said elementary combustion reactors (6) with iron particles and gaseous oxidizer, means for recovering the heat from combustion in said elementary combustion reactors (6), means (9, 11, 12, 15, 16) for collecting metal oxides at the outlet of the combustion chambers, and means for controlling the selective feeding means according to at least one predetermined setpoint. See FIG. 1

A battery may include an anode, a cathode positioned opposite to the anode, a separator positioned between the anode and the cathode, an electrolyte dispersed throughout the cathode and in contact with the anode, and a dual-pore system. The anode may be configured to release a plurality of lithium ions. The cathode may include a plurality of pathways defined by a plurality of porous non-hollow carbonaceous spherical particles and may include a plurality of carbonaceous structures each based on a coalescence of a group of the porous non-hollow carbonaceous spherical particles. The dual-pore system may be disposed in the cathode and defined in shape and orientation by the plurality of carbonaceous structures. In some aspects, the dual-pore system may be configured to receive gaseous oxygen from the ambient atmosphere.

The invention relates to the technical field of environment detection, and provides morphological atmospheric mercury monitoring equipment, which comprises a calibration device and a dual-channel morphological mercury measuring device, and is characterized in that an outlet of a zero gas preparation assembly in the calibration device is connected to a first main gas carrying pipeline, and the zero gas preparation assembly is used for preparing atmosphere into zero air; the gaseous mercuric oxide generation assembly is used for preparing gaseous mercuric oxide with target concentration and adding the gaseous mercuric oxide to zero air; the gaseous elemental mercury generation assembly is used for preparing gaseous elemental mercury and supplementing the gaseous elemental mercury to zero air; the interference assembly is used for adding interference gas into zero air and adjusting the humidity of the zero air; and the dual-channel fractional mercury measuring device is connected with a total outlet of the second main gas carrying pipeline and is used for capturing and analyzing gaseous mercury oxide contained in calibration gas generated by the calibration device. According to the invention, various conditions in an actual atmospheric environment can be simulated, so that the reliability of the dual-channel morphological mercury measuring device in actual monitoring is improved.

The utility model relates to the technical field of VPSA (Vacuum Pressure Swing Adsorption) oxygen generation, in particular to an online switching device for a VPSA oxygen generation system and a liquid oxygen system. Comprising a VPSA oxygen production check valve, a VPSA oxygen production stop valve, a low-temperature liquid storage tank, a vaporizer, VPSA oxygen production equipment, a VPSA oxygen production control center, oxygen using equipment, a first control piece, a second control piece, a pneumatic stop valve and a throttling valve. According to the design, seamless switching between liquid oxygen and VPSA oxygen production is controlled through the pneumatic stop valve; the VPSA oxygen production equipment is used for producing gaseous oxygen, and the VPSA oxygen production control center is used for controlling the operation of the gaseous oxygen production equipment and also used for controlling the opening and closing of the pneumatic stop valve; the VPSA oxygen production check valve and the VPSA oxygen production stop valve prevent liquid oxygen from flowing back to the VPSA oxygen production system through the connecting pipeline when the liquid oxygen is started, seamless connection of the liquid oxygen equipment and the VPSA oxygen production equipment is achieved, and the liquid oxygen equipment is automatically started to supply oxygen when the VPSA oxygen production equipment is shut down or overhauled due to faults.

A method of additive manufacture is disclosed. The method may include creating, by a 3D printer contained within an enclosure, a part having a weight greater than or equal to 2,000 kilograms. A gas management system may maintain gaseous oxygen within the enclosure atmospheric level. In some embodiments, a wheeled vehicle may transport the part from inside the enclosure, through an airlock, as the airlock operates to buffer between a gaseous environment within the enclosure and a gaseous environment outside the enclosure, and to a location exterior to both the enclosure and the airlock.

A pressurization method for increasing a pressure within a propellant tank containing hydrogen peroxide H2O2. The pressurization method includes irradiating at least some of the hydrogen peroxide H2O2 with ultraviolet light emitted by at least one ultraviolet light source. With the UV light, a photolysis is actively provoked which causes the irradiated hydrogen peroxide H2O2 to at least partially decompose into water H2O and gaseous oxygen O2. Also a filling method for at least partially filling a receiving propellant tank with the pressurization method, a tank assembly, a filling system, and a spacecraft.

Title of the invention: Process and apparatus for air separation by cryogenic distillation. In a process for air separation by cryogenic distillation, air is separated by distillation in a simple column (K1). Nitrogen from the top of the column condenses at least partially in a column head condenser (C) against column tank liquid (9) that has been expanded (V1) and sent to the head condenser. A flow of liquid nitrogen (15) is withdrawn from the column, pressurized, and vaporized in a heat exchanger. A flow of gaseous oxygen (3,7) from an external source is cooled and liquefied in the heat exchanger by heat exchange with the liquid nitrogen to be vaporized, expanded, and sent to the column head condenser. FIG. 1

A system and method for the liquefaction and densification of oxygen for use in space vehicle applications is provided that uses high pressure air or synthetic air as the refrigerant source. The disclosed system and method employs a heat exchanger arrangement comprising a first heat exchange device configured to liquefy the high pressure gaseous oxygen stream and at least a portion of the high pressure gaseous air stream via indirect heat exchange with a refrigerant stream to yield a liquid oxygen stream and a liquid air stream. The heat exchanger arrangement also includes a second heat exchange device configured to densify the liquified oxygen stream via indirect heat exchange with the liquid air stream which yields the densified liquid oxygen and a cold vaporized air stream. The refrigerant stream comprises a mixture of the exhaust streams from one or more turbines with the cold vaporized air stream.

There is provided a method of controlling operation of a PEM fuel cell system, PEMFCS, the PEMFCS comprising: a stack of one or more PEM fuel cells, PEMFCs; a compressor having one or more compressor stages for providing a pressurized gaseous oxidant to the cathode side of the PEMFC; and a controller for controlling an operation of the PEMFCS. The method comprises controlling, by the controller, the PEMFCS so as to cause the compressor to compress and provide a gaseous oxidant to the cathode side of the PEMFCS according to a target power output Oe of the PEMFCS during operation of the PEMFCS. In particular, controlling the PEMFCS comprises controlling at least two of the following parameters: a pressure p to which the oxidant is compressed by the compressor; a flow rate r when the compressed oxidant is provided to the cathode side of the PEMFC; and an operating temperature T of the PEMFC such that an increase in the operating temperature T accompanies at least one of a corresponding increase in the pressure p and a corresponding decrease in the stoichiometric ratio lambda of the consumption of the oxidant in the electrochemical reaction with the fuel in the PEMFC.