1628 results about "Electrolysed water" patented technology

The invention provides a fault diagnosis method and system for a water electrolysis hydrogen production system based on a graph neural network, and belongs to the technical field of water electrolysis hydrogen production, and the method comprises the steps: obtaining key operation parameters of the water electrolysis hydrogen production system; constructing a time-varying dynamic adjacency matrix based on the key operation parameters, wherein the time-varying dynamic adjacency matrix is obtained by weighting and fusing physical topological structure data and multivariate time sequence data through arbitration parameters; inputting the multivariate time sequence data into a time feature extraction module, and extracting time dependent features; inputting the dynamic adjacency matrix into spatial feature extraction module spatial dependency features based on the time dependency features; fusing the time dependency feature and the spatial dependency feature by adopting a time-space gating fusion mechanism to obtain a fused spatial-temporal feature; and a fault classification module is adopted to identify whether the water electrolysis hydrogen production system has a fault and a fault type based on the fusion features. The diagnosis method is high in accuracy and fast in response.

The invention relates to the technical field of water electrolysis hydrogen production, and discloses an electrolytic bath outlet temperature control method and system, a medium and a program product, a flow control valve is arranged at an inlet of an electrolytic bath, the electrolyte input flow is converted into a core regulation variable directly influencing the outlet temperature, and active control over the outlet temperature is achieved. Furthermore, the flow control valve is directly connected with the control device, the opening degree signal can be received in real time, the flow can be adjusted, it is ensured that the temperature control instruction can be rapidly converted into the actual flow change, and the response speed to power fluctuation is increased. Furthermore, through a real-time operation state parameter set and a real-time temperature monitoring parameter set, it is ensured that a control signal is generated based on a real working condition, and the temperature control stability under fluctuating power is improved. Furthermore, through the synergistic effect of an electrolyte flow feedforward control signal and an electrolyte flow rear-end control signal, frequent current change caused by wind-solar power fluctuation can be effectively handled, and the fluctuation amplitude of the outlet temperature is reduced.

The invention discloses a water electrolysis hydrogen production electric pile performance evaluation method, and relates to the field of electric pile performance evaluation, and the method comprises the steps: S1, collecting operation parameters through a sensor system, carrying out preprocessing and time sequence alignment, and constructing a real-time data set; s2, according to the real-time data set and historical data, a stack health index is calculated through multi-layer feature hierarchical fusion and a machine learning model; s3, on the basis of the real-time data set, calculating a composite evaluation index parameter containing a safety margin factor and a performance degradation rate; s4, on the basis of the stack health index, analyzing in combination with the composite evaluation index parameters, and determining the stack performance state grade; and S5, extracting a maintenance suggestion in a preset level and maintenance strategy mapping relation based on the pile performance state level, and transmitting the maintenance suggestion to a visual interface for display through the cloud platform. Through multi-layer feature fusion and machine learning, the method achieves the precise evaluation of the health index of the galvanic pile, dynamically monitors the fault early warning, automatically generates an intelligent maintenance strategy, optimizes the performance, and prolongs the service life of equipment.

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 discloses a test method for multi-parameter synchronous excitation of a water electrolysis hydrogen production system, and belongs to the technical field of water electrolysis hydrogen production, and the test method comprises the following steps: obtaining key operation parameters of the water electrolysis hydrogen production system to construct a dynamic coupling response model, and generating a multi-parameter synchronous excitation signal sequence; the multi-parameter synchronous excitation signal sequence is applied to the water electrolysis hydrogen production system, system response data are synchronously collected, and a system response data set with a time sequence mark is generated; generating an adaptive test path planning instruction based on the system response data set with the time sequence mark and the dynamic coupling response model; and updating the multi-parameter synchronous excitation signal sequence according to the self-adaptive test path planning instruction, and executing an iterative test. According to the method, the dynamic coupling response model is constructed, multi-parameter synchronous excitation is generated and applied, and a closed-loop strategy based on response data adaptive iterative testing is adopted, so that the dynamic characteristics and the performance boundary of the system can be efficiently and accurately identified, and a comprehensive global performance map is constructed.

The invention belongs to the technical field of preparation of new energy materials, and particularly provides a production control method and system for a catalyst for hydrogen production through electrolysis of water. The method comprises the following steps: collecting dynamic parameters of a precursor solution in real time; performing time sequence feature extraction on the dynamic parameters through an edge calculation node, and calculating a current density variation coefficient; the dynamic parameters and the current density variable coefficient are input into a multi-objective optimization model, and a real-time regulation and control instruction of the electro-deposition duty ratio and the annealing temperature gradient is generated; the duty ratio and the temperature gradient are adjusted according to the real-time regulation and control instruction, and the water electrolysis hydrogen production catalyst is produced based on the adjusted parameters; the distribution uniformity of elements on the surface of the catalyst is verified through a spectral analysis technology, and a verification result is fed back to the multi-objective optimization model for parameter iterative optimization. Dynamic parameters of a precursor solution are collected in real time, time sequence characteristics are extracted in combination with edge calculation nodes, a current density variable coefficient is calculated, and dynamic sensing and stability quantitative evaluation of the process state are achieved.

The invention discloses an auxiliary device for hydrogen production by water electrolysis, which relates to the technical field of hydrogen production by water electrolysis and is characterized by comprising a base frame, a water inlet pretreatment unit, an electrolysis unit, a gas-liquid separation and gas monitoring module and an intelligent operation regulation and control unit. The inlet water pretreatment unit is used for deeply purifying a water source through a multi-stage filtering device to produce deionized water meeting the electrolysis requirement; the electrolysis unit electrolyzes the purified water into a gas-liquid mixture of hydrogen, oxygen and water vapor; the gas-liquid separation and gas monitoring module adopts a vertical separation structure and a secondary separation system, and is combined with a hydrogen side oxygen sensor and an oxygen side hydrogen sensor to realize efficient gas-liquid separation and real-time gas purity monitoring; the intelligent operation regulation and control unit dynamically regulates electrolysis parameters and gas pipeline states based on monitoring data, and automatic closed-loop control is achieved. The device has the advantages of thorough water purification, high gas purity, safe and reliable operation, intelligent control and the like.

The invention discloses a method for preparing a sulfur-doped nickel hydroxide-based self-supporting electrolyzed water anode, and belongs to the technical field of preparation of electrolyzed water catalytic electrodes, and the method comprises the following steps: S1, preparing strong oxidizing salt, thiourea and transition metal salt into an active solution; s2, pretreating the nickel-containing metal substrate to obtain a precursor; and S3, immersing the precursor in an active solution for ultrasonic impregnation, and performing in-situ oxidation to prepare the sulfur-doped nickel hydroxide-based self-supporting electrolytic water anode. According to the method for preparing the sulfur-doped nickel hydroxide-based self-supporting electrolytic water anode, an oxidizing agent-thiourea-transition metal salt synergistic reaction system is adopted, an ultrasonic-assisted technology is combined, and a high-performance catalytic layer is directly grown on the surface of the metal substrate in situ at room temperature; the invention aims to synchronously realize high catalytic activity, excellent stability and macro preparation of the electrode and fundamentally solve the core pain points of long process, high energy consumption, difficulty in amplification and the like in the prior art.

The invention provides a PWM / Buck cascade circuit auxiliary electrolytic hydrogen production rectification power supply and a control method, and relates to the technical field of electrolytic hydrogen production power supply and intelligent power grids, and the power supply comprises a main power loop and an auxiliary power loop; the main power loop comprises a multi-pulse thyristor rectifier, the power supply side of the multi-pulse thyristor rectifier is connected with an alternating-current power grid, the load side of the multi-pulse thyristor rectifier is connected with one end of a direct-current smoothing reactor, and the other end of the direct-current smoothing reactor is connected with the electrolytic bath; the auxiliary power loop comprises a PWM rectifier and a Buck circuit which are connected in series, the output end of the Buck circuit is connected to the output end of the main power loop in parallel through a direct-current LC filter, the output end of the Buck circuit and the output end of the main power loop are jointly connected into an electrolytic bath for ripple compensation, the multi-pulse rectifier adopts PI control, the PWM rectifier adopts voltage and current double-closed-loop control and SVPWM modulation, Buck adopts PI and feedforward compound control, and the output end of the Buck circuit and the output end of the main power loop are connected in parallel. The system has the advantages of improving the grid-side electric energy quality, the voltage utilization rate, the water electrolysis hydrogen production efficiency and the operation stability.

The invention discloses a gas-liquid treatment method and device of an alkaline electrolytic water hydrogen production system, a processor and a medium, and relates to the technical field of electrolytic hydrogen production. The method comprises the following steps: acquiring an actual value of the concentration of dissolved-state oxyhydrogen in the oxyhydrogen catalytic reaction unit through a dissolved-state oxyhydrogen monitor; the concentration of dissolved-state hydrogen and oxygen in the hydrogen and oxygen catalytic reaction unit is predicted, and a predicted value is generated; a preset concentration threshold value is obtained, and a closed-loop regulation and control instruction for the electrolyte circulating pump is generated based on the actual value, the predicted value and the preset concentration threshold value; and controlling the electrolyte circulating pump to execute corresponding control operation based on the closed-loop regulation and control instruction. Dissolved hydrogen and oxygen are treated through the hydrogen and oxygen catalytic reaction unit, an actual value is obtained in real time in combination with the dissolved hydrogen and oxygen monitor, then the electrolyte circulating pump is regulated and controlled according to the actual value, a predicted value and a preset concentration threshold value, potential safety hazards are reduced, meanwhile, working condition fluctuation is adapted, and stable gas-liquid treatment is guaranteed.

The invention belongs to the technical field of hydrogen production through water electrolysis, and discloses an automatic alkali liquor concentration balancing device of an AEM water electrolysis system and a control method of the automatic alkali liquor concentration balancing device. The cathode / anode gas-liquid separator is connected with the neutralization tank through a pipeline to form a double-circulation loop, and each loop independently neutralizes high-concentration and low-concentration alkali liquor, so that the automation of adjusting the concentration of the alkali liquor is realized. According to the invention, real-time monitoring, dynamic adjustment and optimization of the electrolyte concentration during all-working-condition operation of the AEM electrolytic cell are realized, manual intervention is reduced, and the stability of a hydrogen production system is improved.

The invention relates to the technical field of diaphragms, in particular to an alkaline electrolyzed water porous diaphragm and a preparation method and application thereof.The preparation method comprises the following steps that engineering thermoplastic resin and a diluent are mixed in a nitrogen atmosphere in a sealed mode to obtain a mixed solution, and then the mixed solution is heated to obtain a membrane casting solution; the membrane casting solution is cast on a glass plate at the temperature of 200-350 DEG C, the casting thickness of the membrane casting solution on the glass plate is controlled to be 100-500 microns, then the glass plate where the membrane casting solution is cast is placed at the room temperature to be cooled and then placed in cooling water to be cooled again, so that the membrane casting solution is solidified on the glass plate to form a membrane, and the glass plate and the membrane are separated to obtain an alkaline electrolytic water liquid membrane; and immersing the alkaline electrolyzed water liquid membrane into heated acetone to extract the diluent, thereby obtaining the alkaline electrolyzed water porous diaphragm. The diaphragm prepared by the preparation method of the alkaline electrolyzed water porous diaphragm has relatively low ion impedance and relatively high mechanical strength and alkali resistance.

The invention discloses a water electrolysis hydrogen production fastening device and a use method thereof, and belongs to the technical field of water electrolysis hydrogen production, the water electrolysis hydrogen production fastening device comprises a first pressure equalizing rod and a second pressure equalizing rod, the first pressure equalizing rod and the second pressure equalizing rod are symmetrically arranged on the outer sides of the two to-be-fastened ends of an electrolytic bath in parallel, and first connecting rod assemblies are installed at the two ends of the first pressure equalizing rod; second connecting rod assemblies are installed at the two ends of the second pressure equalizing rod, the first connecting rod assemblies and the second connecting rod assemblies are symmetrically arranged relative to the electrolytic cell, and a driving mechanism is arranged between the first connecting rod assemblies and the second connecting rod assemblies and can drive the first connecting rod assemblies and the second connecting rod assemblies to move relatively. The problems that a traditional hydraulic fastening method is high in cost, uneven in pre-tightening force and low in efficiency are solved, uniform, accurate and efficient pressing and fastening operation on the electrolytic cell are achieved, and sealing safety of the electrolytic cell is guaranteed.

The invention discloses a preparation method and application of a rare earth element doped ruthenium oxide catalyst, and the preparation method comprises the following steps: (1) dissolving a rare earth metal salt, a ruthenium metal salt, dopamine hydrochloride and a Tris-HCl buffer agent in water to obtain a mixed solution, and carrying out in-situ polymerization reaction, solid-liquid separation and drying to obtain a powder precursor; and (2) carrying out high-temperature calcination on the powder precursor obtained in the step (1) to obtain the rare earth doped ruthenium oxide catalyst. Rare earth metal salt and ruthenium salt precursors are dispersed on an in-situ constructed porous carbon substrate, and the rare earth element doped ruthenium oxide nanosheet is generated by oxidation under a high-temperature condition through a self-sacrifice template method. The method has the characteristics of high efficiency and no pollution. The rare earth element doped ruthenium oxide disclosed by the invention is used as a catalyst for the anodic reaction of the acidic electrolyzed water, and shows excellent catalytic activity and wide application prospect.

The embodiment of the utility model provides zero-emission methanol preparation equipment based on garbage gasification and water electrolysis. The equipment comprises a water electrolysis hydrogen production unit, a garbage gasification unit, a first methanol synthesis unit, a second methanol synthesis unit and a gas separation unit, the water electrolysis hydrogen production unit is respectively connected with the garbage gasification unit, the first methanol synthesis unit and the second methanol synthesis unit; the gas separation unit is respectively connected with the garbage gasification unit, the first methanol synthesis unit and the second methanol synthesis unit; the water electrolysis hydrogen production unit generates hydrogen and oxygen through electrolysis; the garbage gasification unit is used for carrying out gasification reaction by using oxygen provided by the water electrolysis hydrogen production unit to prepare synthesis gas containing carbon monoxide, carbon dioxide and hydrogen; the gas separation unit is used for separating carbon monoxide, carbon dioxide and hydrogen in the synthesis gas introduced from the garbage gasification unit, the carbon monoxide and the hydrogen are introduced into the first methanol synthesis unit, and the carbon dioxide is introduced into the second methanol synthesis unit for preparing methanol respectively.

A PEM (Proton Exchange Membrane) electrolytic bath test system relates to the technical field of proton exchange membrane electrolyzed water and comprises an electrolytic bath, a water replenishing and circulating water module, a produced gas pretreatment and analysis module, a nitrogen purging module, a condensation module, a data acquisition module, a control module and a power supply module. The water replenishing and circulating water module is provided with a water replenishing buffer branch and is used for weakening disturbance of low-temperature water to circulating water temperature during water replenishing; the produced gas pretreatment and analysis module comprises a hydrogen treatment system and an oxygen treatment system which are parallel to each other, and a dew point meter is arranged in the hydrogen treatment system and used for detecting the dew point of produced hydrogen. Through the design of the water replenishing buffer branch, the temperature of water entering the electrolytic bath is effectively stabilized; by integrating the dew-point meter, the capability of detecting the dryness of the gas produced by the electrolytic cell is expanded; the overall framework of the system is optimized, the test precision and the energy efficiency are improved, and the operation cost is reduced.

The invention provides a high-activity catalyst for producing hydrogen by electrolyzing water as well as a preparation method and application of the high-activity catalyst. Specifically, the catalyst for producing hydrogen by electrolyzing water comprises: a carbon sintered body carrier; the active components are loaded on the surface and inside the carbon sintered body carrier, the active components comprise nickel molybdenum nitride (NiMoN), cobalt phosphide (CoP) and cerium oxide, and the catalyst has a porous structure. The catalyst is low in cost, high in activity and good in stability, the cost of hydrogen production through water electrolysis can be effectively reduced, and the hydrogen production efficiency is improved.

The invention is suitable for the technical field of water electrolysis hydrogen production, and provides an alkyne-rich carbon-ruthenium nickel alloy catalyst and a preparation method and application thereof. The preparation method comprises the following steps: simultaneously adding a ruthenium salt solution, a nickel salt solution and an organic molecule solution into an alkyne-enriched carbon dispersion liquid for reaction; and carrying out centrifugation, cleaning and vacuum drying treatment on the reacted mixed solution to obtain the alkyne-rich carbon-ruthenium nickel alloy catalyst. According to the invention, the acetylene-rich carbon-ruthenium nickel alloy catalyst uniformly loaded with ruthenium nickel (RuNi) clusters is successfully prepared. In the performance evaluation of hydrogen production by water electrolysis in a simulated seawater environment, the material shows excellent hydrogen evolution activity as a cathode catalyst. Experimental results show that under the applied potential of-0.6 V (relative to a reversible hydrogen electrode, RHE), the absolute value of the current density can reach 0.847 A cm <-2 > to 0.896 A cm <-2 >. The invention provides a feasible material solution for developing a high-performance water electrolysis hydrogen production catalyst suitable for a complex water quality environment.

The invention relates to a multi-energy fusion membrane type humidification / dehumidification solar seawater desalination-water electrolysis integrated hydrogen production system and method, and the system comprises a first solar heat medium flow path, a second solar heat medium flow path, and a first heat exchange medium circulates through a solar heat collector, a liquid storage tank and a first heat exchanger, and is used for heating seawater; according to the second seawater treatment flow path, seawater is converted into hot and humid air through heating and a membrane humidification device, and then the hot and humid air is condensed into pure water through a condenser; pure water is supplemented into the electrolyte tank, the electrolyte circulates, and the power supply module drives the electrolytic hydrogen production device to produce hydrogen. In addition, the system can be additionally provided with a heater and a second heat exchanger to improve the temperature of the electrolyte, finally deep coupling of desalination and hydrogen production is achieved, energy efficiency is improved, and cost is reduced.

The invention discloses a seawater chemical oxygen demand determination method based on bias voltage photoelectric oxidation, and relates to the technical field of water quality monitoring. The method comprises the following steps: collecting seawater and performing pretreatment to obtain a seawater sample; adding supporting electrolyte into the seawater sample to obtain an electrolytic water sample; the method comprises the following steps: injecting an electrolysis water sample into a photoelectrochemical reaction tank, applying bias voltage to a working electrode by taking Ag / AgCl as a reference electrode, and turning on a light source with a specific wavelength for irradiation; carrying out an oxidation reaction in the photoelectrochemical reaction tank, and after the oxidation reaction of the organic matter is complete, obtaining a steady-state photocurrent with a stable current signal; according to a preset steady-state light current-COD concentration curve, a COD measured value is obtained, the COD standard concentration value is corrected according to the water temperature and the salinity, and a COD corrected value is obtained. An adjustable tiny external bias voltage is introduced to cooperate with light source irradiation, so that rapid, accurate and high-anti-interference measurement of COD in seawater is realized.

The application discloses a high-performance stainless steel-based electrolytic water dual-function electrode and application thereof, and the electrode is prepared through the following steps: step 1, pretreating a stainless steel surface to remove impurities on the surface; step 2, placing the stainless steel obtained after the treatment in step 1 and a phosphorus source in an argon atmosphere under the condition of 350-450 DEG C, phosphorizing the stainless steel for 1-3 hours to obtain a phosphorized stainless steel electrode, wherein the linear distance between the phosphorus source and the stainless steel is kept at 5-10 cm; and step 3, placing the phosphorized stainless steel electrode obtained after the treatment in step 2 in a RuCl3 solution, and performing electrodeposition on the phosphorized stainless steel as a cathode to obtain the electrode, wherein the concentration of the RuCl3 solution is 2-8 mmol / L, the potential window during the electrodeposition is-2 V-0 V, and the electrodeposition time is 15-25 cycles.

The invention discloses a preparation method of a bifunctional heterojunction catalyst for AEM electrolyzed water. The method comprises the following steps: step 1, mixing multi-walled carbon nanotubes, deionized water, absolute ethyl alcohol and inorganic acid; step 2, putting the mixed solution in the step 1 into an ultrasonic machine to form a porous structure and more active adsorption sites; step 3, carrying out freeze drying treatment on the mixed solution treated in the step 2; step 4, mixing the dried multi-walled carbon nanotubes with acetylacetone salt, and uniformly grinding the mixed powder; and step 5, putting the powder obtained in the step 4 into a tubular furnace, and carrying out heat treatment in the atmosphere of H2 / Ar to obtain the PtFeCoNiMoZr / ZrO heterojunction catalyst. The catalyst has a remarkable catalytic effect on HER and OER reactions, and meanwhile, stable electrolysis which stably runs for 200 hours in an AEM electrolytic cell under the current density of 1200 mA / cm < 2 > is successfully realized.

The invention discloses a wind-light-hydrogen flexible load control method and system used in a high-proportion renewable energy scene, and relates to the technical field of hydrogen production equipment control, and the method comprises the following steps: collecting key operation data of water electrolysis hydrogen production equipment, and screening high-credibility key operation data to form an equipment operation state data set; performing equipment operation health assessment according to the state data set based on an LSTM and physical sensitivity weighted Attention mechanism, and outputting a health state score of the electrolytic bath; dynamically adjusting a hydrogen production power scheduling strategy according to the equipment health state score, and generating a corresponding scheduling control instruction based on a prediction control method of dynamic window adjustment; a digital twinborn model of the water electrolysis hydrogen production equipment is constructed to conduct simulation optimization on the dispatching control instruction, and the optimized dispatching control instruction is input into the water electrolysis hydrogen production equipment; according to the invention, by introducing an equipment health state sensing and dynamic scheduling adjustment mechanism, the scheduling amplitude and the control frequency are adaptively matched according to the bearable capacity of the hydrogen production equipment.

The invention relates to a preparation method of a water electrolysis hydrogen production composite electrode based on a zwitterionic polymer binder. According to the method, a traditional ionic binder Nafion is replaced with a zwitterionic polymer polysulfobetaine methacrylate, an electrode-electrolyte interface is optimized through a unique electrically neutral hydration layer structure, the rapid desorption behavior of bubbles is enhanced, and efficient transmission of reaction ions is also promoted; and regulating and controlling the mass ratio of the PSBMA binder to the catalyst by using a spraying process. The invention aims to overcome the defects of high cost, insufficient mass transfer and poor interface stability of the existing Nafion binder, and provides the composite electrode taking PSBMA as the binder and the preparation method of the composite electrode, and the provided composite electrode is simple in preparation process and controllable in cost, and has good popularization and application prospects.

The invention provides a nickel-molybdenum-based rare earth element doped core-shell catalyst for hydrogen production by alkaline electrolysis of water as well as a preparation method and application of the nickel-molybdenum-based rare earth element doped core-shell catalyst, and belongs to the technical field of hydrogen production by alkaline electrolysis of water. Aiming at the problems that Mo is easy to dissolve out in an alkaline medium, the stability is poor, the catalyst depends on a substrate, the preparation is complicated and the like in the existing nickel-molybdenum alloy catalyst, a Ni4Mo alloy is constructed as a core through trace RE doping, coprecipitation and reducing atmosphere annealing; the surface is coated with a core-shell structure of RE-MoO3-x rich in oxygen vacancies, a RE-MoO3-x shell layer accelerates water dissociation and generates a synergistic effect with a Ni4Mo core to drive a hydrogen intermediate to migrate to the core to realize efficient hydrogen evolution, and a formed Mo-O-RE bond can anchor Mo and inhibit the Mo from being dissolved out. When the catalyst is used for hydrogen production by alkaline electrolysis of water, the overpotential is as low as 53mV in 1M KOH under the current density of 10mA / cm < 2 >, the catalyst can stably run for over 300h, and the catalyst has high activity and high stability and is simple to prepare.

The invention relates to the field of efficient integrated assemblies of PEM water electrolysis hydrogen production systems, and discloses an efficient integrated assembly for a PEM exchange membrane water electrolysis hydrogen production system, an anode electrode unit in the integrated assembly comprises a ruthenium-based high-entropy metal oxide electrocatalyst, and the ruthenium-based high-entropy metal oxide electrocatalyst comprises ruthenium, tin, manganese, chromium and tantalum elements; the preparation method of the ruthenium-based high-entropy metal oxide electrocatalyst comprises the following steps: grinding solid inorganic ruthenium salt, tin salt, manganese salt, chromium salt, tantalum salt and sodium chloride to obtain a metal salt mixture; carrying out ball milling to obtain a high-entropy metal oxide precursor; and carrying out heat treatment and water washing treatment on the precursor to obtain the ruthenium-based high-entropy metal oxide electrocatalyst. The invention also discloses application of the electrocatalyst in water electrolysis oxygen evolution reaction in an acid solution and water electrolysis hydrogen production reaction of a PEM proton exchange membrane, and the electrocatalyst shows excellent electrocatalytic activity.

The invention relates to the technical field of hydrogen production, in particular to a control method and device for a water electrolysis hydrogen production system based on a swarm intelligence algorithm, and the method comprises the following steps: collecting real-time operation parameters of each electrolytic cell, gathering the parameters into a structured data table, and calculating and generating a comprehensive health score of the electrolytic cell. According to the method, various operation parameters of the electrolytic cell are collected in real time, and the comprehensive health score based on the real-time operation state of the electrolytic cell is established, so that the degradation degree and the operation reliability of the single electrolytic cell can be dynamically quantified, and optimization is performed in a targeted manner in the load distribution process, so that more refined power scheduling is realized; in the load distribution stage, the total input power is discretized into a plurality of standard power units, a distribution guide mechanism is dynamically established based on the comprehensive health score of the electrolytic cell, and intelligent iterative optimization of the overall efficiency of the electrolytic cell group is realized through path selection probability and guide value increment updating.

The invention provides a control method and device of an alkaline electrolyzed water system, an MPC controller optimizes hydrogen flow and auxiliary power supply power in real time through a prediction model in each control period to obtain an optimal control sequence of the current control period, and based on a first control parameter in the optimal control sequence, a second control parameter in the current control period is obtained; and cooperatively regulating the hydrogen-oxygen side pressure difference of the alkaline electrolyzed water system to a target value, and meanwhile, controlling the hydrogen concentration in oxygen of the alkaline electrolyzed water system within a safety threshold value. According to the scheme, the input is controlled based on rolling optimization of the multivariable dynamic prediction model, the dual targets of pressure difference stabilization and inhibition of the hydrogen content in oxygen are achieved, the technical problem that dynamic balance and the HTO risk are difficult to consider in traditional single parameter adjustment is solved, and the hydrogen production efficiency and safety are remarkably improved in the scene of wind and light fluctuation.

A device and a method for producing hydrogen and byproduct oxygen by using green electricity electrolyzed water are provided. The device comprises an oxygen purifying system, a heat exchange system, an air separation compression and expansion system, an air separation rectification system and a liquid oxygen storage system. The method comprises the following steps: first, purifying oxygen prepared by electrolyzing water by green electricity to remove impurities such as hydrogen, carbon monoxide, carbon dioxide and water in the oxygen, then feeding the pure oxygen into the heat exchange system, performing heat exchange liquefaction to obtain liquid oxygen, coupling the liquid oxygen generated by rectification of the air separation rectification system, and obtaining pressurized oxygen through the heat exchange system and the air separation compression and expansion system.

The invention discloses a cascade energy supply and green hydrogen coupling biomass all-carbon directional conversion synthesis gas system and method, and belongs to the technical field of biomass energy conversion. The system comprises a first-stage gasification furnace, a second-stage gasification furnace, a gas-solid separator, an alkane reforming device, a reverse water-gas shift device and a water electrolysis device. The method comprises the following steps: pyrolyzing a biomass raw material and a catalyst in a primary gasifier (500-700 DEG C) to generate semicoke and tar-containing fuel gas; carrying out catalytic co-gasification on the semicoke and tar-containing fuel gas in a secondary gasifier (800-900 DEG C), and realizing tar cracking and CH4 reforming by using a catalyst to obtain crude synthesis gas; after being subjected to high-temperature dust removal, the crude synthesis gas sequentially passes through a self-heating alkane reforming device (CH4lt; 1%) and a reverse water-gas shift device, and finally synthesis gas with the H2 / CO ratio of 2: 1 is produced, so that the chemical application requirements of methanol, Fischer-Tropsch synthesis and the like are completely met, the high energy consumption bottleneck of a traditional process is broken, and full-life-cycle negative carbon emission is achieved.