692 results about "Deoxygenation" patented technology

An improved method and apparatus for removing acid gases and other impurities from raw biogas streams, such as biogas from landfills or biogas from controlled anaerobic digestion, is disclosed. The method provides efficient generation of high-purity renewable natural gas from raw biogas. The biogas is treated in a multi-stage membrane system integrated with compression equipment. The membrane separation units are arranged into interconnected high-pressure and low-pressure gas recycling loops powered by high-pressure and low-pressure compressors. The multi-stage membrane system can be integrated with deoxygenation and auxiliary nitrogen removal systems. The combined system provides for the generation of efficient contaminant removal from raw biogas to generate high-purity methane products with reduced compression energy consumption.

The present invention relates to the technical field of boiler drain treatment, and specifically to a headless full thermal deaerator for collecting boiler drain, comprising: a deaerator, a connecting shell and a base, the connecting shell is located outside the deaerator, the base is located at the bottom of the deaerator and the connecting shell, the end of the deaerator away from the deaerator is fixedly connected with a drain inlet pipe, the drain inlet pipe extends to the inside of the deaerator and is fixedly connected with a drain dispersion head, the inside of the drain inlet pipe and one end close to the drain dispersion head is provided with a guide component, the outside of the drain dispersion head is provided with a drain water separation tray, the end of the drain water separation tray away from the drain dispersion head is provided with a softened water pipeline, the end of the connecting shell close to the deaerator is fixedly connected with a sealing component, the connecting shell is connected to the deaerator through the connecting component, and a buffer component is provided inside the base. The beneficial effects of the present invention are: boiler drain is recycled, the deoxidizer and steam are mixed, the steam consumption for deoxidation is reduced, the thermal efficiency of the boiler is improved, and high efficiency and energy saving are achieved.

The invention relates to the technical field of biodiesel hydrogenation catalysts, and particularly discloses a hydrogenation catalyst of organic bentonite loaded cerium-zirconium solid solution and nickel-molybdenum phosphide as well as a preparation method and application of the hydrogenation catalyst. The hydrogenation catalyst with the organic bentonite loaded with the cerium-zirconium solid solution and the nickel-molybdenum phosphide comprises an organic bentonite carrier, the cerium-zirconium solid solution and the nickel-molybdenum phosphide, the loading capacity of the cerium-zirconium solid solution on the organic bentonite carrier is 2-2.5 wt%; the cerium-zirconium solid solution comprises cerium dioxide and zirconium dioxide; the loading capacity of the nickel molybdenum phosphide on the organic bentonite carrier is 10-15 wt%; and the nickel molybdenum phosphide is Ni2Mo3P. The organobentonite carrier provides an acid site and promotes deoxidation path optimization, the layered structure of the organobentonite carrier can limit the cerium-zirconium solid solution and the nickel-molybdenum phosphide, and organic groups are also embedded into the layered structure, so that the organic compatibility of the organobentonite carrier to biodiesel is improved, and the catalytic efficiency is improved. The cerium-zirconium solid solution provides oxygen vacancies, promotes hydrogenation / deoxidation, and improves the thermal stability and sintering resistance of the catalyst.

The invention discloses a preparation method for treating bagasse to obtain hard carbon, application of the hard carbon and a sodium-ion battery negative electrode, and relates to the field of sodium-ion batteries. The preparation method of the bagasse-based hard carbon comprises the following steps: crosslinking lignin and cellulose in the bagasse-based hard carbon by using an acid solution, and partially stripping ash of biomass. And stripping hemicellulose of the bagasse by using a weak base solution to expose cellulose. By regulating and controlling the concentration, the treatment time and the treatment temperature of the alkali solution, reasonable lignin is reserved in the cellulose, so that regulation and control of a plain pore structure in the carbonization process are promoted. After the alkali solution treatment, a hydrochloric acid solution is used for cleaning the solid, and freeze drying is carried out, so that a proper pore structure is reserved. And then carrying out high-temperature heat treatment in a protective atmosphere, wherein the heat treatment is carried out in three stages. The reaction process is a cellulose deoxidation process, the treatment temperature is 300-400 DEG C, and primary carbonization of cellulose is realized; secondly, carbonizing, namely further deoxidizing after primary carbonization, wherein a large number of C = C / C-C bonds are formed at the treatment temperature of 800-1000 DEG C; and finally, forming a hard carbon graphite layer, wherein the treatment temperature is 1300-1500 DEG C. The bagasse-based hard carbon prepared by the preparation method can be efficiently and stably circulated in a sodium ion battery, and shows excellent rate capability.

A system for capturing carbon subsequent to an industrial process can include a group of modules configured to be prefabricated remotely from an industrial site, transported to the industrial site, and interconnected together at the industrial site. Each module can include equipment configured to perform one or more subprocesses of a capturing carbon process. Examples of the one or more subprocesses can include a pre-scrubber subprocess, an absorbent reclaiming subprocess, an absorbent regeneration subprocess, a dehydration subprocess, a deoxygenation subprocess, or any combination thereof.

An improved method and apparatus for removing acid gases and other impurities from raw biogas streams, such as biogas from landfills or biogas from controlled anaerobic digestion, is disclosed. The method provides efficient generation of high-purity renewable natural gas from raw biogas. The biogas is treated in a multi-stage membrane system integrated with compression equipment. The membrane separation units are arranged into interconnected high-pressure and low-pressure gas recycling loops powered by high-pressure and low-pressure compressors. The multi-stage membrane system can be integrated with deoxygenation and auxiliary nitrogen removal systems. The combined system provides for the generation of efficient contaminant removal from raw biogas to generate high-purity methane products with reduced compression energy consumption.

The utility model discloses a medium-change gas deoxygenization water cooler, and belongs to the field of coolers, the medium-change gas deoxygenization water cooler comprises a shell, the bottom of the shell is provided with a fixing mechanism, one side of the fixing mechanism is provided with a height adjusting mechanism, the top of the height adjusting mechanism is provided with a filtering mechanism, and one side of the filtering mechanism is fixedly connected with a second water inlet pipe; a third water inlet pipe is fixedly connected to the side, away from the second water inlet pipe, of the filtering mechanism, a motor is fixed through a fixing block, then the output end of the motor rotates to drive a threaded rod to rotate, and then the threaded rod rotates to drive a scraper arranged on the surface of a heat exchange pipe in a sleeving mode to move to clean scale on the surface of the heat exchange pipe. According to the medium-temperature-change gas deoxygenization water cooler, the problem that when an existing medium-temperature-change gas deoxygenization water cooler cleans water scale on the surface of a heat exchange tube, the position of a brush cannot be moved, and the water scale still remains on the surface of the heat exchange tube after cleaning is solved, and practicability is improved.

The invention belongs to the technical field of sewage treatment, particularly relates to phase-change deoxidization and deamination equipment and a phase-change deoxidization and deamination method based on sewage treatment, and aims to solve the problems that wastewater is difficult to completely contact with phase-change deoxidization fibers in a wastewater flowing process, so that the deoxidization effect is influenced in deoxidization operation, and the operation and the safety of the equipment are influenced, the following scheme is provided: the phase-change deoxidization and deamination equipment comprises a shell, end shells are arranged at the two ends of the shell correspondingly, purging pipes are fixedly connected to the outer walls of one sides of the two end shells correspondingly, and purging air bins are fixedly connected to one ends of the two purging pipes correspondingly. The phase change deoxidization and deamination equipment and method based on sewage treatment have the effect of improving the sewage treatment effect, and during use, the device can disturb flow of wastewater in the sewage pipe bin, so that the contact effect of the wastewater and the deoxidization fiber body is improved when the wastewater flows; further, the degassing effect of the deoxidizing fiber on gases such as oxygen and ammonia gas in the wastewater is improved, and the using effect of the device is improved.

The invention relates to a preparation method and application of an iodine-doped cobalt-based electrocatalyst. According to the method, cobalt is successfully anchored on an iodine-doped carbon substrate in a form of coexistence of single atoms and clusters in one step by using a strategy of carrying out doping and synchronous etching by using mild ammonium iodide; the obtained iodine-doped cobalt-based electrocatalyst has series catalytic active sites composed of iodine-coordinated cobalt single atoms and cobalt clusters, and can promote deoxidation and hydrogenation steps in an electrocatalytic nitrate reduction reaction at the same time. The obtained electrocatalytic synthesis ammonia shows the ammonia yield exceeding 17000 microgram h <-1 > mgcat.-1 and the Faraday efficiency larger than 95%, high ammonia yield and high Faraday efficiency are achieved at the same time, and a new thought is provided for green, efficient and sustainable ammonia synthesis.

The invention relates to the technical field of plateau medicine and intelligent medical equipment, and discloses a stepped deoxidation treatment system for plateau crowd hypoxia acclimatization time and application, and the system comprises a data acquisition module, an initial information input module, a central processing module and an oxygen flow regulation and control module. The system inputs individual genetic background and baseline physiological data of a patient, and acquires multi-modal physiological parameters and hypoxia-induced biomarkers in real time. The central processing module fuses multi-source information, constructs a multi-modal physiological load index, dynamically divides a habit stage by combining genetic information, and then inputs the multi-modal physiological load index and the habit stage into an adaptive optimization model to generate an oxygen flow regulation instruction. And the oxygen flow regulation and control module executes an instruction to control oxygen supply to form dynamic closed-loop feedback. According to the method, the personalized self-adaptive deoxidation path can be generated, and the efficiency and accuracy of hypoxia acclimatization are improved on the premise of guaranteeing safety.

The utility model discloses an energy-saving type thermal deaerator for a steam boiler, belongs to the technical field of deaerators, and aims to solve the problems that a water source closest to steam is heated quickly and other positions are heated slowly when oxygen in water is discharged due to the fact that a plurality of deaerators always adopt a steam heating mode to heat water. The problems that after oxygen in part of a water source is exhausted, steam needs to continue to heat water sources at other positions, water source loss is caused, meanwhile, heating and oxygen removal at all the positions are not uniform, the oxygen removal time is prolonged, the heating time of introduced steam is prolonged, and the practicability is reduced are solved. Through cooperation of the box body, the connecting body, the cavity, the air inlet pipe, the steam pipe, the fixed pipe, the exhaust pipe, the exhaust hole and other structures, water can be subjected to aeration and deoxygenation treatment, aeration and heating can be effectively carried out at all positions in the water at the same time, it is effectively ensured that the water is heated evenly, oxygen in the water is rapidly exhausted, and water loss is reduced.

The invention belongs to the technical field of deoxidation and hydrogenation catalysis, and provides a low-tungsten-loaded platinum-tungsten bimetallic catalyst prepared based on a solid-phase grinding method and a preparation method and application of the low-tungsten-loaded platinum-tungsten bimetallic catalyst. The preparation method of the catalyst comprises the following steps: loading metal platinum on a silicon dioxide carrier by adopting an impregnation method, and drying to obtain a catalyst precursor; mixing and grinding the catalyst precursor and solid tungsten salt to obtain mixed powder, and drying to obtain catalyst raw powder; and finally, roasting the catalyst raw powder at high temperature in an air atmosphere to prepare the required platinum-tungsten bimetallic catalyst. And in the prepared catalyst, the mass ratio of the active metal platinum is 1.0%-5.0%, and the mass ratio of the metal tungsten is 0.4%-4.0%. When the platinum-tungsten bimetallic catalyst prepared by the method is used in a reaction for preparing 1, 3-propylene glycol through glycerol hydrogenolysis, the yield of 1, 3-propylene glycol is ensured while the tungsten loading capacity is remarkably reduced; and the preparation process is simple, convenient to operate and beneficial to industrial production.

The invention discloses a solid oxide electrolytic cell, a solid oxide electrolytic reactor and a method and system for preparing ammonia and fuel by using the solid oxide electrolytic cell and the solid oxide electrolytic reactor. The solid oxide electrolytic cell comprises an anode, an electrolyte and a cathode, the cathode inputs mixed gas composed of air or nitrogen and water vapor, electrochemical deoxidation reaction is carried out, and ammonia feed gas containing hydrogen and nitrogen is generated; the anode inputs mixed gas composed of combustible gas, water vapor and / or carbon dioxide, the mixed gas and oxygen ions transmitted from the cathode to the anode are subjected to partial oxidation reaction, and synthesis gas containing hydrogen, carbon monoxide and carbon dioxide is generated. The solid oxide electrolysis reactor comprises an anode end plate, an intermediate plate assembly and a cathode end plate which are connected in sequence; the intermediate plate assembly includes a number of repeating units. The electrolytic deoxidation reaction and the partial oxidation reaction of the combustible gas are coupled, so that the electrolytic power consumption is greatly reduced, the low-cost green preparation of the raw material gas for synthesizing ammonia and synthetic fuel is realized, and the production cost of green ammonia and green synthetic fuel is further reduced.

A system for hydrogen production by means of reforming, deoxygenation and waste-gas emission reduction, comprising: a deaerator having a first stream and a second stream which are arranged in a countercurrent manner, a first end of the first stream being a process condensate inlet, a second end of the first stream being a recycled water outlet, a first end of the second stream being a low-pressure steam inlet, and a second end of the second stream being a deoxygenated waste gas outlet; and a reformer comprising a radiation section, a transition section and a convection section which are connected in sequence, the transition section being provided with an injection port, a waste-gas discharge pipeline communicating the injection port with the deoxygenated waste gas outlet of the deaerator, and the convection section being provided with a flue gas outlet. In the present application, the total amount of harmful components discharged to the atmosphere by means of a natural-gas reforming device for hydrogen production can be reduced, and no additional waste-gas treatment unit is added, such that an increase in the construction cost of the device can be avoided.

The present invention relates to a method for catalytic cracking production of biomass liquid fuel, and the method is as follows: Take MCM-48 mesoporous molecular sieve and calcine it in a solution impregnated with cobalt salt and metal borate to obtain a molecular sieve catalyst. Take lignin raw material and sugar raw material, dry them, and then carry out temperature-raising microwave cracking in a cracking reaction fluidized bed. The oil and gas are further catalytically cracked by the molecular sieve catalyst, and the oil liquid is recovered by condensation. The oil liquid, hydrogen-supplying mixed solvent and Ru / C catalyst are subjected to hydrodeoxygenation, and centrifuged for supercritical extraction and upgrading. The material at the top of the extraction tower enters a first-stage separation tower and a second-stage separation tower under reduced pressure for continuous reduced-pressure separation to obtain the finished product of biomass liquid fuel. The modified MCM-48 molecular sieve catalyst catalytically cracks biomass lignin raw material and sugar raw material by a two-step method, strengthens the deoxygenation reaction, and then undergoes supercritical extraction and upgrading and reduced-pressure separation, reducing the reaction temperature and acid value of the biomass liquid fuel, and improving the liquid-gas conversion rate, high-carbon-number oil liquid yield and product calorific value.

The invention relates to the technical field of deoxidation regulation and control, in particular to plateau adaptability intelligent stepped deoxidation regulation and control equipment and method, and the method comprises the steps: obtaining multi-dimensional index sign data of a target in a plurality of oxygen supply stages in a plateau environment; determining a first adaptive state of the target at each moment according to the time sequence change of the multi-dimensional index sign data of the target in the first oxygen supply stage; according to the first adaptive state, determining the adaptive duration for the target to reach a stable state, and according to the adaptive duration and the time sequence change of the multi-dimensional index sign data, determining the adaptive capacity of the target to hypoxia; determining an oxygen supply concentration adjustment value when entering a second oxygen supply stage according to the adaptive capacity, and determining an actual stepped concentration adjustment moment of the second oxygen supply stage by taking preset stepped concentration adjustment data as a reference; and determining a target second adaptive state according to the oxygen supply concentration adjustment value and the actual stepped concentration adjustment moment, and determining a stepped concentration adjustment value of the second oxygen supply stage according to the second adaptive state.

Disclosed is an oxygen scavenger composition including iron powder, activated carbon, water, a halide of an alkaline earth metal, and an alkaline substance, in which a content of the activated carbon is 20 parts by mass or more and 40 parts by mass or less with respect to 100 parts by mass of a content of the iron powder, a content of the water is 230 parts by mass or more and 370 parts by mass or less with respect to 100 parts by mass of the content of the activated carbon, and a content of the halide of the alkaline earth metal is 50 parts by mass or more and 65 parts by mass or less with respect to 100 parts by mass of the content of the water.

The invention discloses a biomass low-temperature deoxidation-pyrolysis system and method. The system comprises a low-temperature deoxidation spiral furnace, a rotary pyrolysis furnace and a rotary ball-milling pyrolysis furnace which are connected in sequence; an outlet of the rotary pyrolyzing furnace is connected with a first furnace tail cover, an air outlet of the first furnace tail cover is sequentially connected with a cyclone separator and a centrifugal condensing device, and a discharging opening of the first furnace tail cover is connected with a feeding opening of the rotary ball-milling pyrolyzing furnace; an outlet of the rotary ball-milling pyrolyzing furnace is connected with a second furnace tail cover, an air outlet of the second furnace tail cover is connected with the cyclone separator, and a discharge port of the second furnace tail cover is connected with the centrifugal grading device; according to the method, two technical means of low-temperature deoxidation and centrifugal condensation are adopted, the high-added-value phenol-rich bio-oil is prepared, the content of phenolic components is high, and the high-added-value phenol-rich bio-oil can be used for replacing chemicals such as phenol; a micron-sized carbon black product with narrow particle size distribution is prepared by adopting two technical means of ball-milling pyrolysis and centrifugal classification; the additional value of the biochar and the liquid product is improved.

The invention discloses a novel hydrogen purification system which is mainly formed by connecting a deoxidation unit, a drying unit and a gas analysis unit in series, the deoxidation unit comprises a deoxidation tower, a deoxidized hydrogen heat exchanger, a silk screen drop catcher and the like, and the drying unit comprises a drying tower, a regenerated hydrogen heater, a regenerated hydrogen heat exchanger, a silk screen drop catcher, a hydrogen filter and the like. The gas analysis unit comprises analysis instruments such as a micro-aerobic instrument and a dew-point instrument, the whole system further comprises a water collector, a water-sealed tank and necessary auxiliary parts such as instruments, pipelines and valves, a hydrogen crude product sequentially passes through deoxidation, drying, the gas analysis unit, catalytic removal of trace oxygen and temperature swing adsorption water removal, and then a high-purity hydrogen product is obtained; by improving the process and pipeline arrangement, the whole drying unit can share one set of heater, gas heat exchanger and silk screen drop catcher, and the structure of the dryer is simplified while the number of used pressure containers is reduced.

The present invention proposes an aluminum nitride ceramic for electronic packaging and a preparation method thereof, which belongs to the field of electronic packaging ceramic materials. In the sintering process of the aluminum nitride ceramic, aluminum nitride is used as a raw material, and erbium hydride and yttrium oxide are added as composite additives for sintering. The erbium hydride powder and yttrium oxide powder are 1wt% to 5wt% of the total mass of the mixed material required for sintering according to the mass percentage, and the balance is aluminum nitride powder. The present invention adopts rare earth hydride as a sintering additive. The rare earth element single substance generated by the decomposition of the hydride can combine with the oxygen element in the aluminum oxide, and the generated rare earth oxide can continue to react with the aluminum oxide. The rare earth hydride has a dual deoxidation effect, which prevents oxygen from entering the aluminum nitride lattice to form defects, and can effectively improve the thermal conductivity; using erbium hydride and yttrium oxide as composite sintering additives can reduce the eutectic line of the aluminate liquid phase, so that the liquid phase appears at a lower temperature, and promotes the density of the sample.

The invention discloses a method for driving biomass to deoxidize and simultaneously preparing hydrogen peroxide by water droplets, which comprises the following steps of: spraying the water droplets with the diameter of less than or equal to 20 microns onto the surface of a biomass material, and collecting spraying liquid dripping from the surface of the biomass material; breaking the spraying liquid into micro-drops with the diameter smaller than or equal to 20 microns, spraying the micro-drops onto the surface of the biomass material again, and repeating the operation until the collected spraying liquid contains hydrogen peroxide with the target concentration. The problems that an existing hydrogen peroxide preparation method and an existing biomass deoxidation method are large in energy consumption, serious in pollution and the like can be solved.

The present application relates to the technical field of direct air carbon capture, in particular to a solar-driven air thermo-chemical deoxidization direct air carbon capture method and system, the present application adopts chemical looping air separation technology, first removes oxygen in air through an oxidation reactor and a reduction reactor, then sends the oxygen-poor air into a DAC carbon capture unit for decarburization, which can greatly reduce the air treatment amount of the DAC unit; at the same time, the present application uses solar energy to power the chemical looping reduction reactor, realizing clean and efficient power supply of the DAC unit; therefore, the solar-driven air thermo-chemical deoxidization direct air carbon capture method and system of the present application adopts a combination of chemical looping air separation and DAC, and uses the oxygen-poor air at the outlet of the chemical looping air separation oxidation reactor to drive a waste heat power generation unit to generate power, so as to meet the power and steam supply of the air decarburization process, thereby solving the problems of high energy consumption and high cost of the existing DAC technology.

The present invention discloses a method for co-producing bio-aviation fuel from corncobs, which comprises the following steps: screening and pulverizing corncobs to control the particle size to be 10-15 mm; mixing the pulverized corncobs with furfural production wastewater containing acetic acid for hydrolysis reaction to generate a dilute furfural solution at 195-205 °C and 1.25-1.3 MPa; subjecting the solid residue after hydrolysis to alkali treatment to separate and obtain crude cellulose; subjecting the crude cellulose to acidolysis reaction by microwave heating in a solid acid catalyst and formic acid solution to generate a dilute levulinic acid solution; catalytically polymerizing the dilute furfural solution and the dilute levulinic acid solution under the action of a copper-based catalyst to generate a C10-C15 hydrocarbon mixture; generating a C10-C15 saturated hydrocarbon liquid mixture through oil-water separation and deoxygenation and hydrogenation reaction of a nickel-based catalyst; and finally through fractional distillation and activated carbon filtration; this method realizes the efficient co-production of furfural, cellulose and bio-aviation fuel from corncobs, and has the advantages of high raw material utilization rate, excellent catalytic efficiency, low energy consumption and environmental friendliness.

The utility model discloses a hydrogen purification system. The hydrogen purification system comprises a deoxidation tower, a cooler, a drying tower, a heat exchanger and a gas-water separator, a hydrophilic wire mesh demister (14) is mounted at the upper part of the gas-water separator, and a hydrophobic coating (15) is arranged in a partial region in the gas-water separator. According to the system disclosed by the utility model, the hydrophilic wire mesh demister is additionally arranged at the top of the gas-water separator, and local hydrophobic modification is performed on the inner wall of the gas-water separator, so that the condensation of water drops is promoted, and the gas-water separation efficiency is improved; hydrogen flowing out of the regeneration drying tower is subjected to heat exchange through the heat exchanger, hydrogen entering the deoxidizing tower is preheated, and energy consumption of equipment is reduced.

The utility model relates to the technical field of desorption and deoxygenation devices, and specifically discloses a new desorption and deoxygenation device for boilers, including a tower body, wherein a stirring mechanism is arranged inside the tower body, one side of the tower body is fixedly connected to one end of a deoxygenation tower, an air intake mechanism is arranged inside the tower body and at the bottom end of the deoxygenation tower, and two supporting legs are fixedly installed on the bottom side of the tower body. Boiler water is transported to the inside of the tower body through a water inlet, and oxygen-free steam is transported to an air outlet box through an air inlet pipe. The air outlet box discharges steam from the boiler water below through an air outlet hole. Through the operation of a motor, the output shaft of the motor drives a rotating shaft connected at one end and a stirring ring mounted on the outer surface of the rotating shaft to fully stir and mix the oxygen-free steam and water, thereby accelerating the rapid release of oxygen in the boiler water. The desorbed oxygen is discharged through the air outlet. The device can fully mix the boiler water with the oxygen-free steam, thereby improving the overall deoxygenation effect of the boiler water.

This invention discloses a core-shell bifunctional catalyst, its preparation method, and its applications. The catalyst's deoxygenation core is an oxide containing one or more of the following non-precious metals: Mn, Cu, Ni, Ce, or precious metals: Pt, Pd, Rh, Ru, Au, Ag. The desulfurization shell is an oxide containing one or more of the following: Al, Mg, Zr, Zn, Fe, Ni, Mo, W, Co. This invention addresses the industry pain points of existing low-temperature methanol washing processes in coal chemical industries, such as lengthy syngas sulfur and oxygen purification processes, easy sulfur poisoning and deactivation of deoxygenation catalysts, and direct CO2 emissions from tail gas causing carbon emissions and resource waste. Through a self-developed core-shell bifunctional catalyst, it simultaneously achieves ultra-deep removal of all forms of sulfides and oxygen from syngas within a single reactor, while simultaneously realizing the high-value reuse of CO2 from tail gas.

The embodiment of the invention relates to the field of cooling devices of pressure vessels, in particular to an oxygen control device, a lead-bismuth reactor and a method for adjusting the oxygen content of lead-bismuth alloy in the reactor. According to the oxygen control device provided by the embodiment of the invention, the oxygen content data of the lead-bismuth alloy in the container is measured and obtained in real time by arranging the measuring piece and the control assembly, and then the oxygen content level in the container is adjusted in real time by utilizing the deoxygenation mass exchanger and the oxygen release mass exchanger; therefore, the oxygen concentration in the lead-bismuth alloy is accurately maintained in a preset range, so that stable operation of a cooling system is ensured; the closed space is formed among the container, the oxygen removal mass exchanger and the oxygen release mass exchanger, so that the oxygen content adjustment process of the lead-bismuth alloy is realized in a closed environment, impurities are prevented from being mixed in, and the quality of the lead-bismuth alloy is ensured. According to the lead-bismuth reactor provided with the oxygen control device, the content of oxygen in the lead-bismuth alloy can be actively adjusted, and long-term stable operation of the reactor is achieved.

The present application relates to the technical field of metal powder preparation, and specifically discloses a method for preparing metal powder with low oxygen content. A method for preparing metal powder with low oxygen content, comprising: S1, weighing metal raw materials and smelting to obtain molten metal; S2, atomizing the smelted molten metal through an ultrasonic atomizing device, using liquid carbon dioxide and argon as cooling media to cool the molten metal to form metal powder; S3, placing the metal powder in a closed reactor, using argon as a carrier gas, passing it into a container filled with aluminum isopropoxide solution and zirconium acetylacetonate solution, atomizing the two solutions through an atomizing nozzle and reacting them with the metal powder; S4, adding the metal powder after the S3 reaction into a pulse current heating device for pulse deoxygenation treatment. The metal powder of the present application can meet the material performance requirements of high-end fields such as aerospace, precision machinery manufacturing, etc., and has the advantages of low oxygen content and high sphericity.

The design method of the high-energy additional fluid discharge structure of the ship condenser relates to the field of high-energy fluid discharge of the surface condenser of the energy power system. It solves the problem that the existing condenser structure design method only considers the energy level reduction and does not consider the optimization of the structural parameters, resulting in the incompatibility of the input high parameters (temperature, pressure, etc.) with the actual application scenario in a small space. The present invention determines the fluid type according to the input fluid thermodynamic parameters and the condenser saturation parameters; determines the fluid energy level according to the water inlet / steam port inner diameter and the fluid thermodynamic parameters; judges the condenser body water inlet / steam port position according to the fluid deoxygenation state or the fluid energy level; determines the type and parameters of the selected diffusion element according to the fluid energy level; evaluates the life of the diffusion element to judge whether the life of the diffusion element meets the service life requirements. If the result is yes, the process ends; if the result is no, the curvature and thickness of the diffusion element are adjusted to meet the service life requirements. The present invention is mainly used for condenser structure design.

A catalyst suitable for catalytic deoxidation to produce high-purity hydrogen in the hydrogen production industry and a preparation method thereof belong to the field of catalyst technology. The preparation method of the catalyst suitable for catalytic deoxidation to produce high-purity hydrogen in the hydrogen production industry comprises five steps: preparing a slurry, forming, hydrolysis and solidification, oxidative roasting, and hydrogen reduction. The catalyst suitable for catalytic deoxidation to produce high-purity hydrogen in the hydrogen production industry obtained by the present invention has catalytic deoxidation performance, can reduce the outlet oxygen volume concentration to 1.47-2.54 ppm, and has a crushing strength of 125-130 N·cm ‑1 , the wear rate is 0.5~0.9%.