115 results about "Gaseous oxygen" patented technology

The present invention relates to an alkaline electrolysis device comprising: - at least one electrolysis cell comprising a reactor chamber which comprises a hydrogen-side reactor chamber region containing the aqueous electrolyte for decomposing the aqueous electrolyte into gaseous hydrogen and an oxygen-side reactor chamber region containing the aqueous electrolyte for decomposing the aqueous electrolyte into gaseous oxygen; - a hydrogen separator connected to the hydrogen-side reactor chamber region for separating the gaseous hydrogen from the aqueous electrolyte introduced into the hydrogen separator; and - an oxygen separator connected to the oxygen-side reactor chamber region for separating the gaseous oxygen from the aqueous electrolyte introduced into the oxygen separator; wherein the hydrogen separator has a first hydrogen separator outlet for removing the aqueous electrolyte having a first hydrogen concentration and a second hydrogen separator outlet for removing the aqueous electrolyte having a second hydrogen concentration that is less than the first hydrogen concentration; and where the first hydrogen separator outlet and the second hydrogen separator outlet are connectable or connected to the reactor chamber.

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 present invention provides a method for preparing C2 hydrocarbons by chemical chain oxidation coupling of methane with water vapor as co-feed. The method comprises the following steps: oxidation stage: oxidizing the catalyst under air atmosphere; purging stage: purging the oxidized catalyst with inert gas; reduction stage: making water vapor and methane co-feed contact with the purged catalyst to generate C2 hydrocarbons. The present invention utilizes the migration of lattice oxygen in the catalyst out of the surface at high temperature to form adsorbed oxygen species to oxidize methane. The adsorbed oxygen species replace oxygen, which hinders the deep contact between methane and oxygen, thereby reducing the occurrence of side reactions, and at the same time avoiding the explosion caused by direct mixing of methane and gaseous oxygen, and the reaction safety is higher.

The invention discloses a high-pressure gaseous hydrogen peroxide supply apparatus, and a high-pressure substrate processing apparatus and method using the same. The high-pressure substrate processing method includes: a step of reacting hydrogen gas and oxygen gas; a step of obtaining a generated hydrogen oxide having a first pressure; a step of converting the generated hydrogen oxide into a treated gaseous hydrogen oxide having a second pressure higher than the first pressure and atmospheric pressure; and a step of causing the processing gaseous hydrogen oxide to act on the substrate to be processed in the processing chamber.

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.

The utility model discloses an integrated ammonia water and oxygen synchronous adding device which comprises a dosing tank, a condensed water dosing point, a main water supply dosing point, an oxygen bottle, a pressure reducing valve group, a needle-shaped regulating valve and a plurality of ammonia water adding pipelines, the ammonia water adding pipeline comprises a mixer, an ammonia water adding pump, a pressure release valve and a volume compensator; an outlet of the dosing tank is communicated with a condensed water dosing point and a main water supply dosing point sequentially through the mixer, the ammonia adding water pump, the pressure release valve and the volume compensator, and an outlet of the oxygen bottle is communicated with an inlet of the mixer sequentially through the pressure reducing valve group and the needle-shaped regulating valve. And meanwhile, the problem of pressure fluctuation caused by gaseous oxygenation compressibility is avoided.

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 discloses a multi-working-condition air internal compression high-pressure oxygen air separation device which comprises an air filter, a raw material air turbine compressor, an air cooling tower, a water cooling tower, an air purification unit, a pressurized air turbine compressor, a main heat exchanger, a rectifying tower, a crude argon tower, a pure argon tower and a high-purity oxygen tower. The air supercharging bypass is provided with a supercharging air turbine compressor, enters the main heat exchanger and then reaches the lower tower, the air supercharging bypass enters the main heat exchanger and is provided with a middle exhaust gas expansion machine, the middle exhaust gas expansion machine is connected with a generator I, and the middle exhaust gas expansion machine returns to an air pipeline to enter the lower tower after expansion refrigeration. A liquid expansion machine I is arranged beside the air supercharging bypass after entering the main heat exchanger, the liquid expansion machine I is connected with a power generator II, and the air supercharging bypass reaches the lower tower after being expanded and refrigerated. Product liquid oxygen, product liquid nitrogen, product gaseous oxygen and product liquid argon are separately produced, the yield is increased, and energy consumption is reduced.

The invention discloses a rectification separation method for an oxygen-argon-nitrogen ternary system in air. The method comprises the following steps: carrying out multi-stage compression and molecular sieve purification on raw material air to remove impurities so as to obtain dry air; purified air is divided into two streams, one stream is pressurized through air critical pressure, liquefied through a main heat exchanger, throttled, depressurized and fed into the bottom of the air separation tower, the other stream is subjected to turbocharging through a turbocharger and expansion refrigeration through an expansion machine, and expansion work drives supercharging equipment; liquid oxygen / gaseous oxygen is led out from the bottom of the air separation tower, and top nitrogen is compressed and shunted to serve as air separation tower top reflux liquid and a pure argon tower cold source respectively; a crude argon-refined argon double-tower structure is adopted, internal circulation reflux is formed by compressing and liquefying process argon, a high-purity argon product is led out from the bottom of a refined argon tower, and uncondensed waste gas and waste nitrogen are cooperatively discharged. Low-energy-consumption production of high-purity oxygen, nitrogen and argon is achieved through linkage of multiple stages of heat pumps.

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.

The invention provides a refrigerating system for a Mars in-situ propellant preparation and storage process, which comprises a gas-liquid separation storage tank, a compressor, an aftercooler, a heat regenerator, a first throttle valve, a carbon dioxide capture module, a liquid oxygen storage tank, a liquid methane storage tank and a fan, and is characterized in that the heat regenerator comprises a high-pressure refrigerant flow channel, a low-pressure refrigerant flow channel, an oxygen flow channel and a methane flow channel; gaseous oxygen is liquefied in the oxygen flow channel and then stored in the liquid oxygen storage tank, and gaseous methane is liquefied in the methane flow channel and then stored in the liquid methane storage tank; the carbon dioxide capturing module comprises a refrigerant flow channel and a carbon dioxide flow channel, a refrigerant of the refrigerant flow channel is used for providing cooling capacity for carbon dioxide freezing capturing, fluid of the carbon dioxide flow channel is Mars atmosphere, and the Mars atmosphere is introduced into the carbon dioxide capturing module through a fan. According to the refrigerating system, integrated cooling of carbon dioxide capture, methane liquefaction and oxygen liquefaction can be achieved, and the complexity of system configuration is reduced.

A metal or ceramic layer may be deposited on nuclear materials by chemical vapor deposition using a non-halogenated liquid organometallic metal precursor. The chemical vapor deposition is carried out by a method including steps of introducing nuclear fuel particles into a fluidized bed reactor, and heating the fluidized bed reactor to a desired operating temperature T1. A flow of a carrier gas is initiated through a vaporizer, and the non-halogenated liquid organometallic metal precursor is injected into the vaporizer and vaporized. A first mixture of the carrier gas and the vaporized non-halogenated liquid organometallic metal precursor may be mixed with a gaseous carbon source, a gaseous nitrogen source, a gaseous oxygen source, or a mixture thereof to produce a second mixture; and the second mixture flows into the fluidized bed reactor at operating temperature T1, allowing deposition of a desired ceramic coating on the particles. The non-halogenated liquid organometallic metal precursor may be a compound of Zr, Hf, Nb, Ta, W, V, Ti, or a mixture thereof.

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.

An apparatus (1) for adding gaseous oxygen to water (9). The apparatus (1) forms a longi- tudinal axis (19). The apparatus (1) comprises at least one elongated diffuser (2) arranged to be in tight fluid communication with an oxygen source (3) and the elongated diffuser (2) extends along the longitudinal axis (19). The apparatus (1) comprises: - at least one elongated perforated member (5) arranged to be in tight fluid communication with an air source (6) and the elongated perforated member (5) extends along the longitu- dinal axis (19); - at least one weight (41); and - a fastening member (10) for fixing the at least one elongated diffuser (2) and the at least one elongated perforated member (5) side by side along the longitudinal axis (19). Also described is a method for using the apparatus (1) to guide oxygen-enriched water from the lower portion (79) of a fish cage (7) and up to the upper portion (70) of the fish cage (7).

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.

The utility model provides a waste gas recycling device of a low-temperature liquid oxygen storage tank, which belongs to the technical field of raw material recycling and comprises a liquid oxygen storage tank, a pressure relief device, an exhaust pipe, a first gas delivery pipe, a first air temperature type vaporizer, a second gas delivery pipe and a second air temperature type vaporizer. One end of the exhaust pipe penetrates through the opening in the bottom of the liquid oxygen storage tank, the other end of the exhaust pipe is fixedly connected with the second gas conveying pipe between the first air temperature type vaporizer and the second air temperature type vaporizer, and the first air temperature type vaporizer is connected with the opening in the bottom of the liquid oxygen storage tank through the first gas conveying pipe; and the second air temperature type vaporizer is connected with external aerobic equipment through a pipeline. According to the utility model, gaseous oxygen which is originally discharged to the outside is recycled, so that the use efficiency of raw materials is improved, and the cost is reduced.

Disclosed are sealed enclosure HAMR hard drives, and methods for use therewith, that reduce the rate of depletion of gaseous Oxygen within the sealed HAMR drive enclosure, thereby leaving an amount of Oxygen available for mitigation of the effects of carbonaceous residue formation, thus extending the useful life of the HAMR drive. In sealed enclosure HAMR hard drives that include a component having a NdFeB alloy magnet, the sealed enclosure is filled with a gas mixture that includes primarily Helium along with a sufficient amount of Oxygen to mitigate carbonaceous residue formation during the lifetime of the drive and a sufficient amount of Nitrogen to reduce the rate of Oxygen depletion due to oxidation of the NdFeB magnet.

The embodiment of the utility model provides a nitrogen generation device with high-purity oxygen. The nitrogen generation device comprises a gas compression system, a pre-cooling system, a purification system, a fractionating tower, a rectifying tower, an expansion machine and a high-purity oxygen tower, the gas compression system, the pre-cooling system and the purification system are sequentially connected, and the purification system adopts a vertical adsorber; the purification system and the rectifying tower are connected with a main heat exchanger of the fractionating tower; the expander is connected with the main heat exchanger and the rectifying tower; the high-purity oxygen tower is connected with the rectifying tower, and an internal compression liquid pump is arranged in the high-purity oxygen tower. According to the embodiment of the invention, high-purity oxygen and liquid oxygen with pressure can be directly produced, so that the generated high-purity liquid oxygen can directly enter the high-purity oxygen storage tank, the high-purity gas oxygen directly enters the oxygen pipe network, an oxygen compressor is omitted, the explosion risk of the oxygen compressor is avoided, and the energy consumption is reduced. The maintenance cost of the oxygen compressor is reduced, and the occupied area of the oxygen compressor is saved.

A method of preparing an abuse deterrent pharmaceutical composition having a drug-containing core enclosed by one or more metal oxide materials is provided. The method includes the sequential steps of (a) loading the particles comprising the drug into a reactor, (b) applying a vaporous or gaseous metal precursor to the particles in the reactor, (c) performing one or more pump-purge cycles of the reactor using inert gas, (d) applying a vaporous or gaseous oxidant to the particles in the reactor, and (e) performing one or more pump-purge cycles of the reactor using inert gas. This produces an abuse deterrent pharmaceutical composition comprising a drug containing core enclosed 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.