49 results about "Oxygen contamination" patented technology

A ruthenium electrode with a low amount of oxygen contamination and high thermal stability is formed by a chemical vapor deposition method. In the chemical vapor deposition method using an organoruthenium compound as a precursor, the introduction of an oxidation gas is limited to when the precursor is supplying, and the reaction is allowed to occur at a low oxygen partial pressure. Consequently, it is possible to form a ruthenium film with a low amount of oxygen contamination. Further, after formation of the ruthenium film, annealing at not less than the formation temperature is performed, thereby forming a ruthenium film with high thermal stability.

The present invention discloses a high-pressure vessel of large size formed with a limited size of e.g. Ni—Cr based precipitation hardenable superalloy. The vessel may have multiple zones.

For instance, the high-pressure vessel may be divided into at least three regions with flow-restricting devices and the crystallization region is set higher temperature than other regions. This structure helps to reliably seal both ends of the high-pressure vessel, and at the same time, may help to greatly reduce unfavorable precipitation of group III nitride at the bottom of the vessel.

This invention also discloses novel procedures to grow crystals with improved purity, transparency and structural quality. Alkali metal-containing mineralizers are charged with minimum exposure to oxygen and moisture until the high-pressure vessel is filled with ammonia. Several methods to reduce oxygen contamination during the process steps are presented. Also, back etching of seed crystals and a new temperature ramping scheme to improve structural quality are disclosed.

The invention belongs to the technical field of environmental monitoring and relates to an atmospheric pollution tracing system. The system comprises an emission source input module used for inputtingemission data, an initialization module used for setting the initial concentration of pollutants, an atmospheric chemistry module used for simulating a chemical process in an air mass movement process according to the input emission data, an atmospheric physical module used for inputting meteorological parameters and simulating a physical process in the air mass movement process according to themeteorological parameters, and a result output module used for outputting the concentration of the pollutants and the rate of the atmospheric chemical reaction process, quantifying the contribution ofregion transmission and local generation to the O3 concentration of a target region, and quantifying the contribution of different chemical processes to the O3 concentration of the target region. According to the system, atmospheric physical and chemical processes are comprehensively considered, the evolution of the pollutant concentration and the chemical reaction rate of gas mass in the movement process in the space-time scale is restored, a discharge area causing ozone pollution in the target area is accurately located, a precursor and a discharge department are optimally controlled, and scientific support is provided for formulating the control measures of the ozone pollution in the target area.

The invention relates to a process for removing oxygen from liquid argon using a TSA (temperature swing adsorption) cyclical process that includes cooling an adsorbent bed to sustain argon in a liquid phase; supplying the adsorbent bed with a liquid argon feed that is contaminated with oxygen and purifying the liquid argon thereby producing an argon product with less oxygen contaminant than is in the initial liquid argon feed; draining the purified residual liquid argon product and sending purified argon out of the adsorbent bed. Regeneration of specially prepared adsorbent allows the adsorbent bed to warm up to temperatures that preclude the use of requiring either vacuum or evacuation of adsorbent from the bed.

A process chamber for the coating of substrates with silanes with a double door seal. The double door seal may have a cavity between the seals which may be evacuated or pressurized, including with an inert gas. An apparatus for the coating of substrates comprising a process oven, a gas plasma subsystem, a metered chemical withdrawal subsystem, a vacuum subsystem, a vaporization subsystem, and a double door seal. A process oven utilizing a double sealed door with pressurized inert gas between the seals to reduce oxygen contamination and risks associated with silane processes.

A system for use in monitoring, measuring, recording, computing and transmitting the oxygen levels and identification of oxygen contamination within an aircraft telescopic landing gear strut. An oxygen sensor is mounted in relation to each of the landing gear struts as to monitor, recognize, measure and record the identification of oxygen within the telescopic landing gear struts. The amount of oxygen within each landing gear strut is measured and recorded and downloaded to the responsible aircraft maintenance department. By detecting the amount of oxygen in a strut, steps can be taken to purge the gas from the strut to minimize corrosion of strut components and to prevent internal combustion of the gas and oil in the strut.

The invention discloses a dynamic decision-making method and device for ozone pollution prevention and control. According to the method and the device, an ozone pollution prevention and control dynamic decision-making technical route of monitoring and early warning, ozone source analysis, decision-making evaluation and standard reaching and performance is realized. And establishing a measure library according to the emission list, and continuously evaluating and optimizing the measure library through the effect of scene simulation. The local list and the regional list are fused to realize refined and quick source tracing of ozone and precursors thereof; multi-dimensional comprehensive source analysis of models, observations and lists is realized, and key emission areas and key pollution industries are accurately judged; and quick evaluation and dynamic optimization of ozone pollution standard reaching planning are realized. By means of three-dimensional monitoring, emission lists, numerical simulation, emergency emission reduction technologies and the like, ozone pollution sources are subjected to multi-dimensional analysis, source contributions of local areas, surrounding areas and pollution industries are quantitatively analyzed, and key causes of urban ozone pollution are recognized.

The invention discloses evaporation equipment. The evaporation equipment comprises a main cavity, a vacuumizing device connected with the main cavity, a control device and at least one evaporation station, and further comprises at least one storage cavity and a crucible replacing device which is capable of being controlled by the control device to hoist and clamp crucibles and transfer the crucibles between the evaporation stations and the storage cavities, wherein the storage cavities communicate with the internal space of the main cavity through first through holes, the first through holes are provided with isolation sealing pieces which can be controlled by the control device to be shifted so as to enable the first through holes to be opened or closed, and the evaporation positions are located on the inner side of the bottom of the main cavity and are provided with heating devices; and the crucible replacing device comprises a telescopic lifting type rotary hoisting mechanism, and the telescopic lifting type rotary hoisting mechanism is connected with the bottom surface of the main cavity and is located in the inner space of the main cavity. According to the evaporation equipment, the plurality of storage cavities are arranged, the number of standby crucibles is increased, so that the number of times of damaging the vacuum environment of the main cavity is reduced, meanwhile, water pollution and oxygen pollution brought by the operation to the main cavity are reduced, and the production efficiency of an OLED is improved.

The present invention is a closure (1) suitable for closing a container containing a first product, said closure being an assembly of less than four independent pieces, and having external side walls (3), a top wall (4), and an internal skirt (5) extending downwardly inside the side walls (3) from the top wall (4), characterized in that: (i) the internal skirt (5) comprises an opening disposed in the top wall (4) of the closure, said opening being closed by a membrane, so as to define at least one compartment to store a second product separately from said first product, and (ii) the membrane (11) closing the top wall opening is made of an oxygen-barrier material, so that said compartment (6) is free of oxygen contamination from ambient air when said closure (1) is screwed onto the neck (2) of said container.

The invention provides a biogas slurry purification device and purification method, and relates to the technical field of biogas slurry treatment in biogas engineering. The biogas slurry purificationdevice comprises an aeration device, wherein the aeration device comprises a tank body and a fan arranged at the lower part in the tank body, biogas slurry flows into the tank body, and the fan generates flowing gas to intermittently aerate the biogas slurry. A filtering device comprises a conveying belt and filtering cloth which is wound on the surface of the conveying belt and moves along with the conveying belt, a slurry feeding pipe is arranged above the front end of the conveying belt, and a hopper for recycling filtered biogas slurry is arranged below the conveying belt. Biogas slurry aerated by the aeration device flows onto the filtering cloth through the feeding pipe, the biogas slurry flows into the hopper through the filtering cloth, filter residues move backwards along with thefiltering cloth, and the filtering device is located in a vacuum environment. According to the biogas slurry purification device and purification method provided by the invention, the content of aerobic pollutants is reduced through aeration, solid particles are filtered, the viscosity of biogas slurry is reduced, and the gas production rate is increased.

The invention relates to an integrated treatment device for membrane filtration concentrated liquor of landfill leachate. The integrated treatment device is composed of a dielectric barrier dischargeplasma generation section located at the upper section of the device and a synergistic ozone pollutant reaction section located at the lower section of the device. The upper section of the device is provided with a hydrogen inlet, an insulating partition plate is inserted between the upper section and the lower section, and a plasma hydrogen inlet conduit is arranged. An exhaust port, a water sample outlet, an inlet and an ozone and oxygen inlet are formed in the lower section of the device. Circulating water used for cooling and connecting grounding electrodes is injected between a reactor inner cylinder and a reactor outer cylinder. A discharge electrode is inserted into the reactor inner cylinder. A microporous aeration head is arranged at the bottom of the reactor inner cylinder. Garbage membrane filtration concentrate enters the inner cylinder, ozone and oxygen mixed gas enters the inner cylinder through microbubble aeration, plasma hydrogen is generated through dielectric barrierdischarge and introduced below the liquid level of the garbage membrane filtration concentrate and reacts with oxygen to generate hydrogen peroxide in situ, enhanced oxidation treatment of organic matter is achieved, and the degradation capacity is improved.

The invention discloses a city and town river and lake water ecological restoration method based on a new restoration mode of mud first and water second. The method is used for city and town river and lake bottom mud in-situ restoration and micro-ecological reconstruction, and comprises the following steps: synchronous reduction of anaerobic bottom mud carbon, nitrogen and sulfur pollutants is realized through SedCaN particles, based on microbial acclimatization and spreading, in-situ regulation of a bottom mud microbial community structure is realized, and construction of an aerobic microbial ecosystem is realized. According to the invention, the river and lake pollution in-situ treatment mode and method have the advantages of low energy consumption, low cost, higher efficiency, higher comprehensiveness and higher safety, can realize an in-situ treatment target of construction of a water body-bottom mud healthy ecological system and collaborative reduction of pollutants, can remove 95% of oxygen consumption pollution such as bottom mud sulfide and the like within 15 days, basically eliminates black and odorous bottom mud, solves the technical bottleneck that the natural environment of the polluted bottom mud is difficult to quickly recover by an aerobic process, shortens the construction period by more than 30 days, and can save the cost by more than 40-50%compared with a desilting scheme.

The present invention relates to a semiconductor material wet surface process passivation method, belonging to the field of semiconductor material technology. Known technologies in the field are difficult to employ a wet process passivation means to maintain long-term stability of a passivation effect while effectively reducing a material surface state. A CH3[CH2]19SH is employed as a sulfide passivation solution and reacts with semiconductor materials in a special condition so that oxygen contamination at the surfaces of the semiconductor materials can be effectively removed, and a molecularlayer of a mercaptan with a long carbon chain is subjected to self-assembly at the surfaces of the semiconductor materials to realize stable passivation protection of the surfaces. The method providedby the invention is little in chemical pollution, simple to operate, low in cost and obvious in passivation effect, and can be used for surface process in a semiconductor device preparation process.

Methods and systems relate to an oxy-boiler used to generate steam injected into a well for assisting recovery of hydrocarbons. Operating conditions of a burner for the oxy-boiler limits oxygen contamination in a resulting flue gas for carbon dioxide recovery and limits size of the oxy-boiler, which may thus be located proximate the well rather at a central processing facility. In contrast to a direct steam generation approach where resulting carbon dioxide is mixed with steam, the oxy-boiler also enables selection of a desired level of carbon dioxide injection, which may be provided with the flue gas that may be exhausted from the oxy-boiler at an injection pressure.

The invention discloses an ozone pollution tracing method, which can realize real-time automatic monitoring of ozone pollution, not only can reduce the labor intensity of manual sampling, but also can improve the ozone pollution tracing efficiency, and has multiple advantages of actual data monitoring and numerical theoretical analysis. The method effectively improves the scientificity and efficiency of ozone pollution traceability, greatly improves the operability of ozone pollution traceability, achieves the fastest traceability effect through a simple and scientific method, efficiently and quickly screens out the cause of ozone pollution high value, can be well suitable for the cause analysis of ozone high value of regional or urban automatic air stations, and has a wide application prospect. The method is suitable for engineering application.

The invention relates to a device and method for producing metal alloy spherical powder for 3D printing. The device includes an inert gas replacement tank, a feeding distributor, a plasma heating and melting furnace, a spheroidizing chamber, Fluidized bed rapid cooler, the method of the present invention is on the basis of using thermal plasma to spheroidize fine metal alloy powder, and adopts a second entry of reducing gas to further reduce the high-temperature powder in the spheroidizing and forming stage; At the bottom, the high-temperature powder is quenched by a fluidized bed composed of inert gas and spherical metal alloy powder of the target product. Relying on the extremely high heat transfer and cooling effect of the fluidized bed, the high-temperature metal alloy powder is rapidly cooled, making Mass production is possible; at the same time, because the cooling method does not involve the contact of high-temperature powder and oxygen-containing substances, secondary oxygen pollution is avoided, thereby ensuring that the oxygen content in the product reaches the standard.