10312 results about "Oxygen gas" patented technology

A system and method for maintaining an oxygen concentration of a biological sample. The oxygen concentration can be maintained by measuring the oxygen concentration within the biological sample and adjusting a rate of an oxygen supplier in response to this measurement. For example, when the oxygen concentration is below a threshold, oxygen can be delivered to the biological sample at a higher rate.

The invention discloses a production method and a production device of an energy-saving sustainable aviation fuel, and the production method comprises the following steps: S1, adsorbing carbon dioxide in air by using an adsorbent, desorbing through high-temperature carrier gas, and cooling and compressing the desorbed carbon dioxide; s2, carbon dioxide and deionized water are preheated and then electrolyzed, and synthesis gas and oxygen are generated; s3, after the synthesis gas is compressed, performing Fischer-Tropsch reaction to generate a mixture of Fischer-Tropsch oil wax, light hydrocarbon and water, cooling and separating, and returning the Fischer-Tropsch reaction heat to preheat the synthesis gas; s4, pressurizing the Fischer-Tropsch oil wax, mixing the Fischer-Tropsch oil wax with hydrogen, carrying out hydrofining reaction to generate a gas-liquid isomerous oil-gas mixture, cooling and separating, and recycling heat energy of a product to And S5, after gas-liquid separation, preheating a liquid phase, carrying out rectification operation, separating and cooling to obtain a sustainable aviation fuel product. By recovering the heat in each link, the heat is efficiently utilized, and the energy-saving performance of production is improved.

The utility model provides hydrogen-rich water production equipment which comprises a purification module, a water storage module, a water supply module and a water supply module, wherein a water inlet of the purification module is used for communicating with a water supply device; a water inlet of the hydrogen-rich module is communicated with a water outlet of the purification module; a water inlet of the hydrogen mixing module is communicated with a water outlet of the purification module, and a gas inlet of the hydrogen mixing module is communicated with a hydrogen outlet of the hydrogen-rich module; the control device is communicated with the purification module, the hydrogen enrichment module and the hydrogen mixing module; the water boiling device is used for being communicated with the water outlet of the hydrogen mixing module under the control of the control device, and the water boiling device is used for heating the hydrogen-rich water output by the hydrogen mixing module; the hydrogen and oxygen absorption device is provided with a hydrogen absorption port and an oxygen absorption port, the hydrogen absorption port is used for being communicated with the hydrogen outlet of the hydrogen enrichment module under the control of the control device, and the oxygen absorption port is used for being communicated with the oxygen outlet of the hydrogen enrichment module under the control of the control device. The hydrogen-rich water supply function, the hot water supply function, the hydrogen absorption function and the oxygen absorption function are integrated.

The invention relates to the technical field of battery testing and environment control, in particular to a lithium oxygen battery testing environment regulation and control system, and aims to solve the problems that in lithium oxygen battery testing, environment parameter regulation and control response is lagged, precision is insufficient, and multi-parameter collaborative decoupling is poor. The system is a combination of a battery test unit, a gas environment regulation and sensing module and an intelligent cooperative control unit. A multivariable decoupling algorithm is embedded in the intelligent cooperative control unit, and dynamic high-precision, wide-range and quick-response cooperative regulation and control of the oxygen concentration, humidity and pressure of the cavity are achieved. The system improves the precision and stability of environment regulation and control, and provides a reliable test environment for lithium oxygen battery research.

The invention discloses a numerical simulation method and system for corrosion expansion cracking of reinforced concrete based on near-field dynamics, and relates to the technical field of numerical simulation of civil engineering materials. Discretizing a concrete calculation area into a near-field dynamic material point model to form a discrete model; applying boundary conditions to the discrete model; establishing a mapping relation between the material point damage degree and the erosion coefficient; acquiring chloride ion concentration distribution and oxygen concentration distribution of the discrete model at the current time step, and judging whether the chloride ion concentration of the surface of the steel bar reaches a blunt removal threshold value or not; if the reinforcing steel bar is blunt, obtaining a displacement field of the model at the current time step and the damage degree of each material point, and updating the erosion coefficient of each material point in the model; according to the method, a crack path does not need to be preset, initiation and expansion of complex cracks can be naturally described, the problem of singularity of a crack tip and the problem of convergence do not exist, damage behaviors such as brittle fracture and peeling of concrete can be simulated, and extra constitutive adjustment and model adjustment are not needed.

The invention discloses a modeling and optimization control method for a gas supply system of a proton exchange membrane fuel cell, and belongs to the technical field of hydrogen energy power. The method comprises the following steps: establishing a nonlinear state space model of a proton exchange membrane fuel cell gas supply system; determining the optimal oxygen excess ratio of the system under different load currents through experiments, and fitting the optimal oxygen excess ratio into a reference function about the load currents; based on the nonlinear state space model, a model prediction control problem with tracking of the optimal oxygen excess ratio and minimization of the cathode and anode pressure difference as control targets is constructed and expressed as a constrained quadratic programming problem; and decomposing and iteratively solving the quadratic programming problem by adopting an alternating direction multiplier method to obtain the optimal control input of the current control period and act on the system. The method effectively solves the problem that traditional model predictive control is difficult to deploy in real time in a vehicle-mounted controller due to large calculated amount, so that efficient and accurate cooperative control of the proton exchange membrane fuel cell gas supply system is realized.

The invention relates to the technical field of flue gas recirculation, in particular to a bell-type annealing furnace oxygen-rich combustion flue gas recycling system and method, and the system comprises a circulating flue gas heating cylinder, an oxygen-rich combustor and a system control valve group; oxygen of the oxygen-rich combustor is mixed with fuel, after the fuel enters the circulating flue gas heating cylinder, the oxygen is mixed with part of the fuel to form root flame, and the unburned fuel and oxygen are completely combusted in the circulating flue gas heating cylinder to form flameless flame; the number of the circulating flue gas heating cylinders is one or more, each circulating flue gas heating cylinder is provided with an oxygen-rich combustor, heat generated by combustion is used for heating flue gas generated by combustion of oxygen and fuel in the circulating flue gas heating cylinders, the heated flue gas is circulated to the bell-type furnace through the high-temperature and high-pressure circulating flue gas fan, and redundant flue gas is recycled in a centralized mode. According to the system, heat is fully utilized through flue gas circulation, heating uniformity and quality are improved, combustion flue gas is high-purity carbon dioxide, and zero emission of the flue gas can be achieved through trapping and recycling.

The invention belongs to the technical field of gas separation engineering, and particularly discloses a deep removal method and device for dissolved oxygen in a pregnant solution, and the device comprises an absorption unit and a removal unit. A barren liquor inlet is formed in the upper part of the absorption unit, barren liquor enters from the upper part of the absorption unit, a feed gas inlet is formed in the lower part of the absorption unit, feed gas enters from the lower part of the absorption unit, the barren liquor and the feed gas are in countercurrent full contact in the absorption tower, and oxygen-containing rich liquor is obtained at the bottom of the absorption tower. The rich liquid enters the removal unit from the absorption unit, the rich liquid inlet is located in the upper portion of the removal unit, the lower portion of the removal unit is provided with a replacement gas inlet, replacement gas enters the removal unit from the lower portion of the removal unit, and after the replacement gas is in countercurrent full contact with the oxygen-containing rich liquid, removal gas containing slightly-dissolved gas such as oxygen is formed at the top of the removal unit. The removed gas is discharged or enters a recycling system according to field requirements, and deoxidized rich liquid is sent out from the bottom of the removal unit. A purified gas outlet is formed in the top of the absorption unit, and purified gas is sent out from the outlet.

The invention belongs to the technical field of TG-DSC testing of metal powder materials, and particularly relates to an anti-oxidation high-precision TG-DSC testing method of high-temperature alloy powder, which comprises the following steps: placing the high-temperature alloy powder in a furnace body of a TG-DSC instrument, carrying out high-purity argon replacement on the atmosphere in the furnace body by taking high-purity argon as furnace body purging gas, and carrying out high-purity argon replacement on the atmosphere in the furnace body; the initial oxygen content in the furnace body is reduced to 0.1 ppm or below; continuously introducing hydrogen-argon mixed gas as flowing gas into the furnace body, controlling the temperature of the furnace body to be increased to a target temperature, and ending the test to obtain a TG curve and a DSC curve of the to-be-tested high-temperature alloy powder; according to the invention, through physical cleaning of oxygen in the furnace body by circulating vacuumizing before testing and chemical cleaning of oxygen permeating into the furnace body by hydrogen-argon mixed gas in the whole process in the testing process, a dual anti-oxidation barrier is constructed, so that oxidation weight increment and oxidation heat release interference of a powder sample are eliminated fundamentally; therefore, the real mass change and the heat flow signal change of the alloy powder sample in the temperature programming process can be accurately measured.

The invention relates to the technical field of flexible transparent electrodes, in particular to a Cu / Al laminated metal grid flexible transparent electrode and a preparation method thereof. The Cu / Al laminated metal grid flexible transparent electrode comprises a flexible substrate, a copper layer arranged on the flexible substrate and an aluminum layer arranged on the copper layer, and the aluminum layer located on the outer layer spontaneously forms an Al2O3 passivation layer with the thickness of 2-5 nm in air. The Al2O3 passivation layer can effectively prevent oxygen and moisture from permeating inwards, so that oxidation of the copper layer in a humid or high-temperature environment is fundamentally inhibited, long-term stability of the electrical property of the electrode is ensured, and meanwhile, due to the fact that the thickness of the copper layer is 150-250 nm, excellent conductivity is provided, and low square resistance is achieved; the latticed structure maintains high light transmittance of the electrode while ensuring a high conductive path. Finally, the structure has excellent oxidation resistance, high light transmittance, low sheet resistance and flexible stability under the support of a flexible transparent substrate with the thickness of 50-200 [mu] m, and meets the harsh requirements of a new generation of flexible optoelectronic devices on electrode performance.

The invention discloses a PSA oxygen production and nitrogen recovery cooperative control method and system, and relates to the technical field of gas separation. The method comprises the following steps: establishing a dynamic multi-target evaluation function comprising a plurality of performance indexes such as air compressor energy consumption, vacuum pump energy consumption, oxygen purity and nitrogen recovery rate, and collecting pressure, temperature, gas components and flow data in an adsorption tower in real time; in the adsorption stage, based on the real-time data and the current oxygen demand, a first machine learning model is used for generating and executing a dynamic pressure adjusting strategy for the air compressor; in a desorption stage, predicting an optimal vacuum degree curve based on historical desorption data by utilizing a second machine learning model, generating a start-stop and pumping rate control strategy of the vacuum pump according to the optimal vacuum degree curve, and determining the recovery rate of the vacuum pump according to a comparison result of the real-time nitrogen concentration and a preset recovery concentration threshold value. And desorption airflow is controlled to enter the nitrogen recovery pipeline or be directly discharged through the valve.

The invention relates to the technical field of air electrode preparation, in particular to a metal-loaded super-hydrophobic air electrode, a preparation method and chlorine production application, the air electrode comprises a high-hydrophobicity gas diffusion layer obtained through polytetrafluoroethylene modification, and the metal-loaded super-hydrophobic air electrode is prepared through a corona etching and electrochemical in-situ deposition technology. A uniform and highly-dispersed metal catalyst layer directly grows on the surface of the polytetrafluoroethylene substrate, so that the gas diffusion electrode with excellent mass transfer performance and an efficient catalytic function is obtained; the prepared electrode is used for carrying out electrochemical catalysis on a water body containing chloride ions by adopting a cyclic voltammetry method, and active chlorine can be efficiently generated in situ; the prepared metal-loaded super-hydrophobic air electrode has the advantages of being low in oxygen mass transfer resistance, high in catalyst utilization rate, free of generation of by-products, capable of efficiently generating active chlorine and the like, and has wide application potential in actual water environment disinfection.

The invention discloses a method for step-by-step impurity removal in crude copper fire refining, and belongs to the technical field of metallurgical technologies. The method comprises the following steps: (1) removing As and Sb in an oxidation stage: heating and melting crude copper, blowing oxygen, and adding an impurity remover to remove As and Sb impurities in the crude copper; (2) removing Pb and Ni in an oxidation stage: after the impurity removal agent is added in the step (1) for reaction, adding a composite impurity removal agent, continuously blowing oxygen, stopping blowing oxygen until the oxygen content in the melt is 0.6-0.8% by mass, and slagging off to remove Pb and Ni impurities; and (3) deoxidation in a reduction stage: after slagging-off in the step (2), adjusting the temperature of the melt to a reduction temperature, adding high-sulfur pulverized coal in twice, and removing oxygen in the melt to complete impurity removal. According to the method, the impurity removal agent and the impurity removal process are optimized, and the impurity removal effect of the crude copper is remarkably improved through the synergistic effect.

The embodiment of the invention provides a continuous blood oxygen monitoring system in extracorporeal circulation and a control method thereof. The continuous blood oxygen monitoring system comprises a vein sensor, an artery sensor, a blood flow sensor, an oxygen sensor, a carbon dioxide sensor, a controller and a display, the vein sensor monitors the vein blood oxygen saturation degree; the artery sensor monitors arterial oxygen saturation and hematocrit; the blood flow sensor monitors the blood flow of the artery pipeline; the oxygen sensor monitors the oxygen concentration of the oxygenator; the carbon dioxide sensor monitors the carbon dioxide concentration of the oxygenator; the display provides an interaction control, responds to a trigger operation acting on the interaction control, sends an interaction instruction to the controller, and updates information displayed in an interaction interface according to the control of the controller; the controller receives the interaction instruction and executes processing corresponding to the interaction instruction; the processing includes controlling display information of the display; the display information comprises information corresponding to the monitoring parameters. The scheme ensures the safety and effectiveness of the treatment process.

Embodiments are directed to an advanced, modular, and scalable system integrating a Dissolved Gas Infusion (DGI) system and a Programmable Logic Controller (PLC) to automate and optimize processes such as water filtration, oxygenation, and waste management. The DGI system infuses high-purity oxygen directly into the water, maintaining optimal dissolved oxygen (DO) levels from the post-larvae stage to harvest, and significantly reducing oxygen wastage compared to traditional bubble aeration processes. The system includes modular raceways with load-bearing support beams, twist locks for secure stacking, and observation ports for easy access. This innovative approach ensures efficient, cost-effective, and reliable shrimp production, leading to higher survival rates, faster growth, and improved overall health of the shrimp.

The invention provides a carbazole-containing heterocyclic compound and an organic electroluminescent device thereof, and relates to the technical field of organic electroluminescent materials. The carbazole-containing heterocyclic compound provided by the invention has relatively high polarizability, is beneficial to improving the refractive index, and can reduce the total reflection phenomenon during light emission of the device and effectively improve the light extraction efficiency of the device when being applied to a covering layer of the organic electroluminescent device; and meanwhile, the compound has relatively high glass transition temperature and good film-forming property, and can isolate moisture and oxygen, so that the luminous efficiency and the service life of the organic electroluminescent device are further improved and prolonged. The preparation method of the compound is simple, raw materials are easy to obtain, and the compound can be widely applied to the fields of organic thin film transistors, panel display and the like and has good application effects and industrialization prospects.

The invention discloses a local space oxygen enrichment control system and method based on an oxygen selective permeable membrane, belongs to the technical field of air purification, environment control and membrane separation, and aims to solve the problems that the indoor oxygen concentration cannot be actively and efficiently increased and compact integration is difficult in the prior art. The system integrates an outdoor fresh air fan, a switching valve, an oxygen enrichment membrane device, an air pump, an indoor air return and supply fan, a gas monitoring control unit, an outdoor exhaust fan and the like, and a control unit dynamically regulates and controls a switching valve passage, the rotating speed of each fan and start and stop of the air pump according to the difference between oxygen sensor data and preset target oxygen concentration; air selectively passes through the oxygen-enriched membrane device to generate oxygen-enriched air or is fed into a room through a bypass air path, and the indoor oxygen concentration is actively stabilized at 21%-26%. The system is suitable for local spaces such as residences and offices, active oxygen enrichment and environment control can be achieved, the air quality is improved, and meanwhile low energy consumption, safety and comfort are taken into account.

The invention discloses a method for preparing a high-performance AEM water-electrolyzed hydrogen production membrane electrode, which comprises the following steps: respectively preparing an AEM water-electrolyzed hydrogen production anode and an AEM water-electrolyzed hydrogen production membrane cathode, then placing the AEM water-electrolyzed hydrogen production anode and the AEM water-electrolyzed hydrogen production cathode on two sides of an anion exchange membrane, and sealing edges to prepare the AEM water-electrolyzed hydrogen production membrane electrode, the preparation method comprises the following steps: mixing catalyst powder with a solvent to prepare catalyst prefabricated slurry, adding an anion exchange resin solution in batches, adding a hydrophobic binder to prepare catalyst slurry, coating the surface of a hydrophobic modified diffusion layer with the slurry, and finally coating the surface of the diffusion layer with the anion exchange resin solution to prepare the hydrophobic modified diffusion layer. And soaking in an organic solvent, and washing. According to the prepared AEM water electrolysis hydrogen production membrane electrode, on the basis that oxygen bubble retention can be reduced, the stability is improved, and meanwhile the activity of the membrane electrode is improved.

The invention belongs to the technical field of hydrogen detection sensing, and particularly relates to an optical fiber hydrogen sensor for detecting hydrogen in water. The optical fiber hydrogen sensor consists of a demodulator and a hydrogen-sensitive optical fiber, wherein the hydrogen-sensitive optical fiber consists of an optical fiber, a WO3 / Pt layer and an ePTFE hydrophobic breathable film from inside to outside, wherein the WO3 / Pt layer is coated outside the optical fiber, and the ePTFE hydrophobic breathable film is coated outside the WO3 / Pt layer. The optical fiber hydrogen sensor is small in size, and the defect that a traditional hydrogen sensor is not suitable for a narrow space in a small chamber of a water electrolysis hydrogen production tank is overcome. The problems of spectrum jitter and abnormal interference caused by the fact that a traditional optical fiber hydrogen sensor is affected by water in an electrolytic bath environment are solved through the hydrophobic breathable film. The hydrogen sensor disclosed by the invention provides a real-time and stable quantitative means for solving the problem that hydrogen concentration cannot be effectively measured due to mixing of hydrogen and oxygen in a small chamber, a water outlet and an oxygen outlet of a water electrolysis hydrogen production tank.

The invention discloses a preparation method of low-carbon-content high-purity quartz sand, which comprises the following steps: carrying out alkaline hydrolysis and drying on organosilane to obtain alkaline xerogel, putting the alkaline xerogel into a quartz tube of a rotary tube furnace, starting the furnace body, adjusting the rotation rate, heating to a specific low temperature, and introducing nitrogen to replace air; introducing oxygen, controlling the pressure, carrying out oxidation reaction, relieving the pressure to normal pressure after the reaction, pumping and discharging the product, and repeating the oxidation and pumping steps for many times until the tail gas carbon dioxide reaches the standard; raising the temperature, introducing chlorine-containing gas for purification, finally raising the temperature to a sintering temperature, and sintering in an air atmosphere to obtain the low-carbon-content high-purity quartz sand. According to the preparation method, the energy consumption and the equipment cost of the carbon removal procedure are greatly reduced, the specific surface area and the densification performance of the subsequent high-purity quartz sand product can be guaranteed, and a technical path which is low in energy consumption, high in efficiency and capable of giving consideration to the product performance is provided for industrial preparation of the high-purity quartz sand through a sol-gel method.

The invention relates to the technical field, and discloses an intelligent management method and system for oxygen inhalation, and the method comprises the steps: setting an oxygen flow mixing ratio and a quantitative parameter according to an expected treatment effect, and setting a simulation control for an operator to adjust the oxygen flow mixing ratio in real time; a plurality of sensors are connected to a main controller, data acquisition and state monitoring are carried out through the sensors, and oxygen flow acquisition and air mixing proportion are quantitatively displayed and charged; an air-oxygen proportional electromagnetic valve is arranged, a main controller receives a starting instruction, the air-oxygen proportional electromagnetic valve is controlled according to data collected by a sensor, the flow of mixed gas flowing through the proportional valve and the oxygen proportion are accurately controlled, and remote flow control and program control over oxygen supply are achieved. By means of the method, an intelligent management system for oxygen inhalation is achieved, the whole machine is easy to operate through intelligent control, it is guaranteed that the oxygen flow is adjusted in real time according to the needs of a patient, and the dynamic needs are kept consistent.

The invention discloses a high-pressure combustion combined heat and power generation energy storage system and method for hydrogen and oxygen production through electrolysis, and relates to the field of hydrogen energy storage. After the electrolytic cell produces high-pressure hydrogen and oxygen, the high-pressure hydrogen and oxygen are stored in the hydrogen / oxygen storage tank, the system can operate in a hydrogen / oxygen mode, and in the oxygen mode operation, the hydrogen and oxygen steam mixed gas from the oxygen storage tank and the hydrogen / oxygen evaporation compressor are combusted in the high-pressure combustion chamber to generate superheated steam, and then the superheated steam enters the expansion turbine to do work; due to excessive oxygen, dead steam after acting is separated into two working media through a gas-liquid separator, that is, gas enters a cooler to be cooled and then returns to a combustion chamber through a hydrogen / oxygen evaporation compressor, drainage water generated after liquid enters a heat supply heat exchanger is pressurized through a water pump and then enters a high-temperature combustion chamber, and therefore clean utilization of hydrogen energy and cyclic regeneration of the working media are achieved. The system can realize high power generation efficiency and excellent environmental protection performance, and is suitable for regions requiring stable consumption of fluctuating renewable energy sources, power and heat supply and the like.

The invention discloses a high-oxidation-resistance long-life polyethylene cable sheath material and a preparation method thereof, and relates to the technical field of high polymer materials. Comprising the following components: high-molecular-weight high-density polyethylene, surface-modified nano-dioxide, furan-maleimide grafted polyethylene, a Schiff base dynamic cross-linking agent, tea polyphenol grafted polyethylene, a temperature-responsive oxygen-blocking microcapsule, a main antioxidant, an auxiliary antioxidant, an emergency antioxidant, a light stabilizer, a halogen-free flame retardant, a processing aid and an acid absorbent. According to the invention, the main antioxidant, the auxiliary antioxidant and the tea polyphenol grafted polyethylene form a chemically synthesized and naturally modified composite antioxidant system, the designed service life of the material is greatly prolonged, the temperature-responsive oxygen-blocking microcapsule automatically cracks to release the core material when the operating temperature of the cable is greater than or equal to 90 DEG C, a dynamic oxygen-blocking layer is formed, and the service life of the cable is prolonged. The defect that the effect of traditional physical oxygen barrier is attenuated at high temperature is overcome, and the oxygen permeability at high temperature is reduced compared with that of a single nano barrier scheme.

The invention discloses a hydrogen and oxygen supply method for a hydrogen fuel cell emergency power supply vehicle. The method comprises the following steps: 1, providing a hydrogen and oxygen supply system for the hydrogen fuel cell emergency power supply vehicle; 2, information acquisition; 3, data processing; the FL-LADRC algorithm disclosed by the invention has the characteristics of simple structure, low calculation burden and low implementation cost on the premise of ensuring the disturbance suppression capability, and is particularly suitable for being used by an embedded platform or resource-constrained equipment. According to the method, the problem that the cathode pressure cannot be measured is solved by introducing the sliding mode differential observer, and the dynamic coupling relation between the oxygen flow and the cathode pressure is compensated in real time in combination with the improved expansion state observer, so that the operation risks such as oxygen starvation and flooding are effectively eliminated; in addition, compared with a traditional PID control algorithm, the fuel cell air supply system adopts the IGA-BP prediction and the NNMPC control algorithm, the performance is remarkably improved, and the urgency and stability requirements of the emergency power supply vehicle in the power protection operation can be better met.

The invention discloses a preparation method and application of a zinc-bromine flow battery positive electrode material, and belongs to the field of zinc-bromine flow batteries. The preparation method comprises the following steps: firstly, cleaning and activating a carbon-based three-dimensional conductive network substrate by adopting plasmas, performing oxygen / argon plasma etching, and performing chemical vapor deposition on carbon to prepare three-dimensional porous carbon; then growing a metal oxide nanocrystalline array on the three-dimensional porous carbon by a hydrothermal method, and carrying out ammonia gas calcination to convert the metal oxide nanocrystalline array into a metal nitride nanocrystalline array; then preparing an electro-deposition solution containing tin bismuth salt and an aniline-bromine source polymerization solution, and constructing Sn-Bi bimetallic nanoparticles and a polyaniline-bromine complex layer on the metal nitride nanocrystalline array / three-dimensional porous carbon precursor through electro-deposition and electro-polymerization in sequence to finally prepare the high-performance zinc-bromine battery positive electrode material. The positive electrode material has high conductivity, excellent Br2 / Br <-> catalytic activity and structural stability, and the coulombic efficiency, the voltage efficiency and the energy efficiency of the battery are remarkably improved.

The invention relates to the technical field of electro-catalysis oxygen evolution, and particularly discloses a nickel-molybdenum foam composite oxygen evolution electro-catalysis material with high-valence nickel induced by molybdate radicals and a preparation method of the nickel-molybdenum foam composite oxygen evolution electro-catalysis material aiming at the problem that an existing oxygen evolution electro-catalysis material is insufficient in comprehensive performance or poor in performance stability. Soaking in a NaCl aqueous solution, and taking out; s2, mixing the nickel-molybdenum alloy foam with a K3 [Fe (CN) 6] aqueous solution, heating, and carrying out a hydrothermal reaction; and S3, finally, the nickel-molybdenum alloy foam is placed in the air or oxygen atmosphere and heated to 350-450 DEG C, heat preservation treatment is conducted for 2 h, and the nickel-molybdenum foam composite oxygen evolution electro-catalysis material is obtained. Molybdate anions are adopted as a sustainable induction source to be coupled with a NixOy / Fe3O4 heterogeneous interface, integrated construction is achieved on a nickel-molybdenum foam framework, and the nickel-molybdenum foam composite material has the advantages of being low in overpotential, high in stability, high in activity, high in binding force and long-term in durability and meanwhile being simple in process, easy to amplify on a large scale and the like.

The invention relates to the technical field of micro-pressure oxygen cabins, in particular to an intelligent integrated oxygen generation and coordinated regulation and control method for a micro-pressure oxygen cabin, which comprises the following steps: supplying air to a cabin body of the micro-pressure oxygen cabin by adopting an air compressor, stably increasing the pressure in the micro-pressure oxygen cabin and stabilizing the pressure at a preset treatment pressure of 30kPa-50kPa through an intelligent pressure regulation and control system, high-pressure air in the micro-pressure oxygen cabin body serves as an oxygen production source and is conveyed to the VPSA oxygen production main machine; the VPSA oxygen production main machine adsorbs nitrogen through a zeolite molecular sieve filled in the VPSA oxygen production main machine and collects oxygen; s2, pressurizing the oxygen collected in the step S2 to 0.1-0.4 MPa or above through a supercharger, conveying the oxygen back into the micro-pressure oxygen cabin body, and allowing the user to breathe through an oxygen supply device; an intelligent cooperative control system is constructed, integrated management is carried out on the whole process of pressure boosting, pressure stabilization, oxygen generation, oxygen supply, safety and environment regulation and control, the occupied area and the purchase cost of equipment are reduced, the human error risk is reduced, and the micro-pressure oxygen treatment requirement under multiple scenes is met.

The invention discloses a co-processing method for multi-source lithium battery solid waste. The method comprises the following steps: S1, putting the waste lithium battery recovery wastewater, black powder and a certain amount of acid into a hydrothermal reaction kettle, sealing, and introducing oxygen or air into the hydrothermal reaction kettle; s2, raising the temperature of the hydrothermal reaction kettle to 180-250 DEG C, and carrying out constant-temperature reaction for 0.5-3 hours; s3, after the reaction is finished, cooling to room temperature, and separating a reaction product to obtain filtrate and filter residues. According to the cooperative treatment method, high-efficiency treatment of difficult-to-treat salt-containing organic wastewater and selective extraction of lithium in the battery black powder are synchronously realized.

The utility model provides an oxygen injection control system based on dynamic environment variable compensation, and aims to solve the non-linear problem of oxygen content control under environment variable disturbance. Comprising a main oxygen spraying pipeline, an oxygen supplementing pipeline connected with the main oxygen spraying pipeline in parallel, a PLC (Programmable Logic Controller) and a PID (Proportion Integration Differentiation) controller which are respectively connected with the main oxygen spraying pipeline and the oxygen supplementing pipeline and are used for controlling the main oxygen spraying pipeline and the oxygen supplementing pipeline, and an oxygen content measuring pipeline which is in communication connection with the PID controller, the oxygen control system selectively controls the main oxygen spraying pipeline and / or the oxygen supplementing pipeline to be opened or closed.

The invention provides a granary safety intelligent early warning method and device, relates to the field of data processing and early warning, and solves the technical problems that the existing granary operation risk detection is not accurate enough, and the conditions of incomplete identification, false alarm or missing alarm are easy to occur. The method comprises the following steps: collecting multi-source time sequence data in a granary, and constructing environmental safety time sequence characteristics based on oxygen concentration time sequence data, toxic gas concentration time sequence data and smoke state time sequence data; based on the temperature and humidity time sequence data and the grain pile temperature time sequence data, risk trend time sequence characteristics are extracted; constructing a risk time sequence based on the environmental safety time sequence characteristics, the risk trend time sequence characteristics and the personnel access information time sequence data; carrying out fusion modeling on the risk sequential sequence through Transform, and identifying a risk level; and when the risk level reaches a preset threshold value, the system controls the bin gate access control to execute opening or closing operation, and synchronously triggers linkage early warning treatment. The method is used in the granary operation safety early warning process.