2334 results about "Electrolysed water" patented technology

The invention discloses a preparation method and application of an amorphous nickel-cobalt-iron phosphate anode catalyst, and belongs to the technical field of alkaline water electrolysis hydrogen production, the preparation method comprises the following steps: (1) dissolving transition metal salt in a solvent, and stirring to obtain a metal salt solution; (2) dissolving phosphate in a solvent, and stirring to obtain a phosphate solution; and (3) adding the phosphate solution into the metal salt solution for reaction, washing with deionized water and ethanol, centrifugally separating, and drying to obtain the amorphous nickel-cobalt-iron phosphate anode catalyst. According to the preparation method and application of the amorphous nickel-cobalt-iron phosphate anode catalyst, process safety improvement and environmental friendliness optimization are achieved through an all-water-phase green synthesis system, the obtained catalyst shows excellent performance in an AEM electrolytic cell, the cell voltage is only 1.87 V under the current density of 2 A / cm, and the method has remarkable industrial application prospects.

The invention discloses a hierarchical optimization scheduling method for an electric power system containing a large-scale water electrolysis hydrogen production device, and relates to the technical field of hierarchical optimization scheduling of the electric power system.A gradient heterogeneous compensation unit fuses covariance alignment and differential privacy encryption, and on the premise that original data does not need to be shared, the optimal scheduling of the electric power system is achieved. The federal learning convergence speed is improved to a practical level; after each hydrogen production station uploads the encryption gradient, a coordinator corrects and eliminates equipment difference interference through statistical distribution, and generates a global consistent frequency modulation strategy, so that commercial sensitive information is protected, and model oscillation failure is avoided; the knowledge distillation unit further compresses the volume of the model to guarantee the real-time response capability of edge nodes, and when the frequency of the power grid changes suddenly, a quick response protocol automatically triggers a dynamic priority distribution mechanism; the regional aggregation layer directly broadcasts a frequency modulation instruction based on a historical performance label, and skips a federated learning iteration process, so that a hydrogen production cluster forms an adjusting resultant force in a second level.

The invention belongs to the technical field of electrocatalyst material preparation, and discloses a long-range disordered localized CoOOH ultrathin nanosheet electrocatalyst as well as a preparation method and application thereof, fluorine-doped cobalt selenide nanobelts prepared by a low-temperature annealing method are used as a base material, and the CoOOH ultrathin nanosheet electrocatalyst is prepared by in-situ reconstruction under an alkaline electrolyzed water anode oxygen evolution reaction condition. In the preparation process of the CoOOH ultrathin nanosheet provided by the invention, lattice cobalt is stabilized in the water electrolysis anode reconstruction process through fluorine ions with strong bonding action with cobalt ions, so that the long-range disordered structure of amorphous CoOOH generated after reconstruction is limited by localization, and the alkaline water electrolysis anode reaction performance is improved. The catalyst has activity and durability obviously superior to those of a commercial ruthenium oxide catalyst in industrial application of anion exchange membrane water electrolysis hydrogen production.

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 discloses a frequency regulation and control method and device for a water electrolysis hydrogen production system based on multi-energy cooperation, and relates to the technical field of automation of water electrolysis hydrogen production systems. The method aims to solve the problems that traditional regulation depends on a fixed threshold value or artificial experience, is difficult to adapt to multi-energy power grid frequency change, lacks system comprehensive monitoring and multi-index collaborative optimization and is difficult to regulate under renewable energy fluctuation. On the basis of multi-source data real-time monitoring and frequency characteristic analysis, the water electrolysis hydrogen production system can dynamically respond to power grid frequency fluctuation, equipment operation parameters are optimized through a self-adaptive regulation and control strategy, the influence of frequency disturbance on the hydrogen production process is effectively restrained, the cooperative compatibility of the water electrolysis hydrogen production system and a power grid is enhanced, and the hydrogen production efficiency is improved. Multi-index evaluation is carried out on the regulation and control strategy by means of a simulation model, so that efficient consumption of renewable energy sources and optimal control of energy consumption cost are realized; in combination with an edge calculation and prediction model, data acquisition frequency dynamic adjustment, abnormity early warning and strategy autonomous optimization are realized.

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 anion exchange membrane electrolytic bath which comprises a bath body, an alkali corrosion resisting anode electrode, an alkali corrosion resisting cathode electrode, an anion exchange membrane and a driving mechanism, the alkali corrosion resisting anode electrode, the alkali corrosion resisting cathode electrode, the anion exchange membrane and the driving mechanism are arranged in the bath body, and the driving mechanism comprises a double-shaft motor, a swing assembly and a reciprocating motion assembly. Wherein the swing assembly realizes the swing of the alkali-corrosion-resistant anode electrode, and the reciprocating motion assembly realizes the reciprocating motion of the alkali-corrosion-resistant cathode electrode. According to the application, the double-shaft motor drives the swing assembly and the reciprocating motion assembly to operate simultaneously, so that the alkali corrosion resisting anode electrode swings, the alkali corrosion resisting cathode electrode reciprocates, electrolyte near the electrodes flows and is disturbed, and the dynamic change breaks a concentration boundary layer of the electrolyte near the surfaces of the electrodes; the migration of ions in the electrolyte to the surface of the electrode and the diffusion of reaction products from the surface of the electrode are accelerated, so that the mass transfer rate is improved, and the electrolytic reaction can be carried out more efficiently.

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 preparation method of a proton exchange membrane water electrolysis hydrogen production membrane electrode, and belongs to the technical field of proton exchange membranes, a catalyst carrier is prepared, S101, a polyimide membrane is inversely fixed in a magnetron sputtering vacuum coating chamber, a cavity cover of the magnetron sputtering vacuum coating chamber is closed, vacuumizing is performed, and a substrate is heated; and S102, argon is introduced into a cavity of the magnetron sputtering vacuum coating chamber, coating is started, the power of the bismuth metal target is set to be 0.2-0.5 kW, and the deposition time is 60-1800 s. In the invention, the physical vapor deposition method is utilized to load the catalyst on the surface of the metal oxide carrier with high specific surface area and ordered nanostructure, so that the exposure of active sites of the catalyst is increased, the dosage of the noble metal catalyst is reduced, and the bonding strength between the catalyst and the carrier is enhanced; the catalyst is not easy to separate from the surface of the carrier, and large-scale slurry agglomeration is avoided.

The utility model provides a compound device for providing feed gas for preparing green ammonia from new energy and a green ammonia synthesis system. The composite device comprises a deep cooling air separation nitrogen generation subsystem, a hydrogen supply subsystem and a main heat exchanger, and the hydrogen supply subsystem comprises a water electrolysis hydrogen generation unit, a first hydrogen compressor, a second hydrogen compressor, a hydrogen storage tank and a hydrogen conveying pipeline. The hydrogen conveying pipeline comprises a first hydrogen conveying pipeline, a second hydrogen conveying pipeline and a third hydrogen conveying pipeline; the main heat exchanger is a multi-channel heat exchanger and comprises a first flowing channel used for flowing of a first medium and a second flowing channel used for flowing of a second medium, the second hydrogen compressor is connected with the hydrogen storage tank through the first flowing channel, and the hydrogen storage tank is connected with the third hydrogen conveying pipeline through the second flowing channel. The composite device provided by the utility model can ensure the supply stability of the raw material hydrogen of the ammonia production subsystem, and solves the technical problem that the hydrogen supply is unstable in the existing green ammonia synthesis process.

The invention relates to an electrolyzed water catalyst and a preparation method and application thereof, the electrolyzed water catalyst is a three-dimensional porous material of elemental iridium and / or iridium oxide, the specific surface area of the electrolyzed water catalyst is greater than or equal to 65 m < 2 > / g, the porosity is greater than or equal to 40%, and the electrolyzed water catalyst has a mesoporous and macroporous structure. The electrolyzed water catalyst disclosed by the invention has a large specific surface area, high porosity and a three-dimensional porous structure of mesopores and macropores, so that the electrolyzed water catalyst has better mass transfer performance and apparent catalytic activity. The three-dimensional porous structure of the catalyst can improve the utilization rate of the iridium element, so that the loading amount of iridium in a membrane electrode is reduced, and the catalyst has excellent stability. The preparation method provided by the invention is simple and convenient, and has relatively high economical efficiency.

The application discloses a kind of water electrolysis hydrogen production rectifier transformer harmonic active inhibition optimization method, comprising the following steps: constructing rectifier circuit, rectifier circuit includes switch tube, the voltage vector and zero vector of switch tube output are combined, and combined output voltage vector is obtained;The harmonic amplitude is obtained by processing combined output voltage vector, Levy tangent flight strategy and confidence domain variation strategy are introduced in black-winged kite optimization algorithm to construct improved dynamic search algorithm, the total harmonic distortion is obtained by iterative calculation of harmonic amplitude by improved dynamic search algorithm, i.e. optimal switch tube combination, the switch tube of rectifier circuit is adjusted by optimal switch tube combination, and the total harmonic distortion of rectifier circuit is reduced.The optimal switch tube combination of rectifier circuit is iteratively calculated by improved dynamic search algorithm in the application, effectively reduces resource consumption, and processing speed is accelerated, and the efficiency and accuracy of electrolytic water hydrogen production rectifier are improved.

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 an alkaline electrolyzed water diaphragm based on nickel oxyhydroxide and a preparation method and application of the alkaline electrolyzed water diaphragm, and relates to the technical field of composite diaphragms.The alkaline electrolyzed water diaphragm is prepared through a phase inversion method, and nanometer nickel oxyhydroxide NiOOH particles are selected as inorganic nanometer filler; the mass percent of the nickel oxyhydroxide in the membrane casting solution is 15-30%. A strong chemical bond formed by nickel ions and hydroxyl in the hydroxyl nickel oxide crystal endows the material with excellent structural stability, and the material shows excellent solubility resistance, hydrolysis resistance and structural collapse resistance in a strong alkaline electrolysis environment and can tolerate high-concentration OH <-> erosion for a long time; meanwhile, the intrinsic high-oxidation-resistance characteristic is achieved.

This invention relates to the field of alkaline water electrolysis for hydrogen production, and discloses a water electrolysis hydrogen evolution catalyst, its preparation method, and a method for water electrolysis to produce hydrogen. The catalyst contains Ru, Co, Ni, C, and N; wherein C exists in the catalyst in the form of carbon nanotubes; the Ru content in the catalyst is 0.1-5 wt%, and the average particle size of Ru is 2-5 nm. This invention uses a carbon nanotube composite structure generated by ZIF pyrolysis as a support, which improves the charge transfer capacity by increasing the Ru loading and dispersion. Furthermore, the synergistic effect of Ru with Co and Ni effectively enhances the catalytic hydrogen evolution activity of the Ru-Co-Ni water electrolysis hydrogen evolution catalyst.

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 provides a preparation method of a Ru-based alloyed heterojunction water electrolysis hydrogen production catalyst, and belongs to the technical field of nano materials and electrochemistry. The two-dimensional porous Ru-based alloyed heterojunction electrolytic water hydrogen production catalyst can be prepared at low cost and high efficiency in an air atmosphere by using a ternary molten salt assisted Joule heat rapid calcination process. The water electrolysis hydrogen production catalyst has excellent structure and component advantages, and the two-dimensional porous structure has the advantages that the number of active sites of the catalyst can be increased, and hydrogen can be easily removed in the reaction process. The alloying heterojunction component has the advantages that the variety of Ru active sites can be increased and the synergistic effect of different components can be stimulated by alloying and abundant heterogeneous interfaces. Furthermore, the hydrogen evolution reaction kinetics of the adsorption energy of Ru to an intermediate product is optimized, and excellent alkaline electrolytic water hydrogen evolution performance is shown.

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 utility model belongs to the technical field of PEM water electrolysis hydrogen production, and particularly relates to a water circulation system for PEM water electrolysis hydrogen production. The water inlet end of the pretreatment system is connected with the water outlet end of the raw water tank through a direct-current pump; the water inlet end of the secondary treatment equipment is connected with the water outlet end of the pretreatment system through an electromagnetic valve; the water inlet end of the pressure barrel is connected with the water outlet end of the secondary treatment equipment through a booster pump; the water inlet end of the purification column is connected with the water outlet end of the pressure barrel through an electromagnetic valve; the water inlet end of the pure water tank is connected with the water outlet end of the purification column through an electromagnetic valve; the water inlet end of the heat exchanger is connected with the water outlet end of the pure water tank through a centrifugal pump. According to the PEM water electrolysis hydrogen production system, the circulating water paths of the water purification machine and the hydrogen production equipment are integrated and mixed, so that the PEM water electrolysis hydrogen production system can directly use municipal water as a raw material, the pipeline between the PEM water electrolysis hydrogen production system and the water purification machine is optimized and integrated, and waste water can also be discharged into the pure water tank for recycling.

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 discloses an efficient NiMo-Co MOF alkaline electrolysis water electrode and a preparation method thereof.The efficient NiMo-Co MOF alkaline electrolysis water electrode comprises a nickel net, a NiMo deposition layer deposited on the nickel net and a Co MOF deposition layer deposited on the NiMo deposition layer, and during preparation, the nickel net is pretreated firstly; dissolving a nickel salt, a molybdenum salt, a conductive salt and a complexing agent in water to obtain a NiMo electro-deposition solution; the method comprises the following steps: dissolving cobalt salt and a ligand in a mixed solution of DMF and water to obtain a Co MOF electro-deposition solution; the pretreated nickel net is placed in a NiMo electro-deposition solution for constant-current deposition, and a NiMo electrode with a NiMo deposition layer loaded on the nickel net is obtained; the NiMo electrode is placed in the Co MOF electro-deposition solution for constant-voltage deposition, and the NiMo-Co MOF composite electrode with the Co MOF deposition layer loaded on the NiMo electrode is obtained. The method is simple and easy to control, low in preparation cost and good in electrode stability and hydrogen production effect.

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 relates to the technical field of anion exchange membranes, in particular to a dual-ion-channel synergistic enhanced conduction anion exchange membrane for alkaline water electrolysis hydrogen production and a preparation method of the dual-ion-channel synergistic enhanced conduction anion exchange membrane for alkaline water electrolysis hydrogen production, and the dual-ion-channel synergistic enhanced conduction anion exchange membrane for alkaline water electrolysis hydrogen production is prepared by blending and crosslinking quaternized polyether-ether-ketone and carboxylated polyether sulfone, the carboxylated polyethersulfone provides a cation channel to form a double-ion synergistic conduction structure; the preparation process of the anion exchange membrane comprises the steps of quaternized polyether-ether-ketone synthesis, carboxylated polyether sulfone synthesis, membrane casting solution preparation, tape casting drying, crosslinking treatment and alkali liquor ion exchange. By constructing a double-ion channel structure, the synergistic conduction of anions and cations is realized, and the total ion conduction efficiency of the membrane is remarkably improved. The two polymer components form a continuously interlaced channel network, so that the defect that the conduction path of the traditional single ion channel membrane is isolated is avoided.

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 discloses a proton exchange membrane electrolyzer flow field plate device, which belongs to the technical field of proton exchange membrane electrolyzed water, and comprises an anode flow field plate and a cathode flow field plate, the anode flow field plate is the same as the cathode flow field plate, one side plate surface of the anode flow field plate is provided with a plurality of parallel linear flow channels, and the other side plate surface of the anode flow field plate is provided with a plurality of parallel linear flow channels. Through holes perpendicular to the plate surface of the anode flow field plate are formed in the two ends of each linear flow channel; every two adjacent linear runners are separated by a ridge, and the top of the cross section of each ridge is in an arch shape. According to the invention, the uniformity of current density and the utilization of a catalyst are improved, and the linear flow channel is simple in structure and easy to process. The design of the through holes at the two ends improves gas utilization rate and flow velocity, and water generated by reaction is easy to discharge. The defects that the snake-shaped flow channel is high in airflow speed, long in path, large in pressure loss and easy to cause that the electrolytic cell cannot work are overcome.

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 utility model relates to a device for producing hydrogen by electrolyzing water, in particular to a device for producing hydrogen by electrolyzing water through iron-based circulation assistance. The utility model aims to solve the problems of large electrolytic solution resistance, high equipment complexity and pipeline blockage in the existing water electrolysis technology. The utility model discloses a device for iron-based circulation assisted water electrolysis hydrogen production. The device comprises an electrolyte tank, an ion exchanger, a circulating pump, a transformer, a rectifier, an electrolytic bath, a first compressor, a second compressor, a high-pressure storage tank, a gas storage tank, a plurality of dryers, a cathode, an anode and a proton exchange membrane. According to the utility model, the design of the carbon powder dispensing electrode is adopted to replace the suspension state of coal slurry, and meanwhile, the one-step electrolysis design and the efficient circulation auxiliary module are combined, so that the solution resistance and the equipment complexity are obviously reduced, and the problem of pipeline blockage is solved; the iron-based circulating auxiliary water electrolysis hydrogen production device is efficient, low in power consumption, stable and reliable, and is suitable for large-scale industrial popularization.

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.