187 results about "Hydrogen purity" patented technology

The present application relates to hydrogen production technology field, especially to a kind of methanol hydrogen production method, comprising the following steps: S10: methanol water is heated and vaporized to obtain methanol water vapor;S20: methanol reforming reaction obtains hydrogen mixture gas;S30: after cooling treatment to hydrogen mixture gas, through water washing tower absorption unreacted methanol water, then, adjust the relative humidity and temperature of hydrogen mixture gas;S40: hydrogen mixture gas is input into carbon dioxide absorption tower to remove carbon dioxide;S50: after removing carbon dioxide, product hydrogen is obtained and input hydrogen tank storage to supply user end.The above-mentioned methanol hydrogen production method, by methanol water vapor reforming hydrogen treatment, obtains hydrogen mixture gas.Again, hydrogen mixture gas is purified to obtain product hydrogen with very low carbon monoxide content, with raw material easy to transport, the hydrogen purity of output is high, equipment construction cost is low, and energy consumption is low and the like advantages, reach the purpose of expanding hydrogen application range.

The invention relates to the technical field of gas purification, in particular to a novel start-up method for a PSA (Pressure Swing Adsorption) hydrogen extraction device, which comprises the following steps: on the basis of the working environment of the PSA hydrogen extraction device, checking before start-up is carried out, nitrogen replacement is carried out, the oxygen content of a hydrogen extraction system is controlled within a preset range, and the pressure of the hydrogen extraction system is reduced to normal pressure; the difference between the current environment data and the standard environment data is analyzed, the valve opening degree and the adsorption pressure are adjusted, the equipment operation parameters are optimized to meet the current environment conditions, and an environment parameter adjusting instruction is obtained. By collecting and analyzing the current environmental data, dynamically adjusting the adsorption pressure and the valve opening and connecting the gas quality monitor to collect and analyze the hydrogen purity in real time, the concentration change of impure substances can be found in time, the adsorption time is optimized according to the data, and it is ensured that the hydrogen purity continuously reaches the high standard; and through continuous monitoring and quality verification of the hydrogen purity of the product, the consistency and reliability of the hydrogen product are guaranteed.

The invention discloses a hydrogen purification pressure optimization system and a control strategy for hydrogen production through electrolysis of water, and relates to the technical field of hydrogen production through electrolysis of water, and the hydrogen purification system comprises a hydrogen purification unit which comprises a plurality of adsorption towers arranged in parallel and is used for adsorbing and removing impurities in hydrogen; the pressure optimization system comprises a pressure sensor, a pressure regulating valve and a controller, the pressure sensor is used for monitoring the pressure in the adsorption tower in real time, the pressure regulating valve regulates the pressure according to an instruction of the controller, and the controller is used for regulating the pressure according to the adsorption characteristics of the adsorbent and the requirements of the hydrogen purification process. Setting pressure control parameters to adjust the pressure in the adsorption tower in real time; and the control unit is used for performing coordinated management on the temperature and the flow of the pressure optimization system, and forming closed-loop feedback regulation of parameters by comparing the actual purity of the purified hydrogen with a preset purity standard. The hydrogen purity is improved, the adsorbent works under the optimal pressure by optimizing the pressure control strategy, the hydrogen purity is effectively improved, and the energy consumption is reduced.

The utility model relates to the technical field of chemical engineering, provides an automatic chlorine-hydrogen flow ratio control device for a hydrochloric acid synthesis furnace, and solves the problem that the ratio of hydrogen to chlorine in the hydrochloric acid synthesis furnace cannot reach a theoretical set value due to design defects of the conventional device. Comprising a hydrochloric acid synthesis furnace, a hydrogen buffer tank and a chlorine buffer tank, the hydrogen buffer tank and the chlorine buffer tank are connected with the hydrochloric acid synthesis furnace, a hydrogen flow meter and a hydrogen purity detector are arranged between the hydrogen buffer tank and the hydrochloric acid synthesis furnace, and a chlorine flow meter and a chlorine purity detector are arranged between the chlorine buffer tank and the hydrochloric acid synthesis furnace. The online hydrogen purity detector and the chlorine purity detector are additionally arranged, the flow of hydrogen and chlorine is subjected to proportional control, the adding amount of hydrogen and chlorine is automatically adjusted, automatic adjustment is achieved, it is guaranteed that the ratio of hydrogen to chlorine reaches a theoretical set value, and then it is guaranteed that the concentration of finished hydrochloric acid is qualified.

The embodiment of the invention provides a hydrogen purity detection method and device, equipment and a storage medium. Comprising the steps that sample gas and to-be-detected hydrogen are obtained, a Wheatstone bridge circuit is constructed based on the sample gas and the to-be-detected hydrogen, and the circuit comprises two fixed resistors and two thermistors; applying heat to the thermistor, and obtaining a resistance change value of the thermistor and a circuit output end detection value; and detecting the purity of the to-be-detected hydrogen according to the resistance change value and the detection value. The hydrogen purity is detected by constructing the Wheatstone bridge circuit and utilizing the thermal response difference of the thermistor to the sample gas and the hydrogen to be detected, and tiny resistance change can be captured, so that the detection precision and accuracy are improved. Based on a stable circuit principle and accurate resistance measurement, interference of external factors is reduced, and a detection result is more reliable. A resistance change value and a circuit output end detection value can be rapidly obtained, real-time detection of the purity of hydrogen to be detected is achieved, and a detection result is provided in time.

The invention relates to the technical field of new energy hydrogen production, and discloses a method for measuring and calculating new energy consumption in a hydrogen production process by combining real-time data. The method comprises the steps that hydrogen production system operation parameters and new energy power generation data are obtained, the hydrogen production system operation parameters comprise an electrolytic cell voltage fluctuation curve and a hydrogen purity detection value, and the new energy power generation data comprise a wind power prediction deviation rate and a photovoltaic actual output curve; establishing a new energy consumption evaluation model, performing time sequence alignment on the voltage fluctuation curve of the electrolytic cell and the wind power prediction deviation rate, and generating a dynamic matching degree index set; based on the set, a multi-scale feature extraction network is called to analyze a photovoltaic actual output curve, and a fusion analysis result containing output stability and absorption potential features is obtained; and inputting a result into the absorption amount optimization model for adaptive weight distribution, outputting a new energy absorption amount measurement value containing a time dimension absorption efficiency sequence and a hydrogen production equipment response parameter, and adapting to new energy absorption evaluation and scheduling requirements in hydrogen production.

The invention relates to the technical field of hydrogen production, in particular to equipment for preparing hydrogen from biomass, a method for preparing hydrogen from biomass and application. The equipment comprises a biomass pretreatment system and a chemical-looping hydrogen production system, wherein the biomass pretreatment system comprises a drying unit, a crushing unit and a granulating unit; the chemical-looping hydrogen production system comprises a biomass hydrogen production reduction reactor, a hydrogen purification device and a dust remover; the dust remover is connected with a regeneration storage tank and an air oxidation reactor; the air oxidation reactor is connected with the biomass hydrogen production reduction reactor; the granulating unit is connected with the biomass hydrogen production reduction reactor; a first heat exchanger is arranged between a synthesis gas outlet of the biomass hydrogen production reduction reactor and the hydrogen purification device, and a water vapor outlet of the first heat exchanger is connected with the biomass hydrogen production reduction reactor; and an oxygen-poor waste gas outlet of the air oxidation reactor is connected with the drying unit. The equipment is simple in structure, waste heat is fully utilized, energy consumption is reduced, hydrogen purity and yield are improved, and carbon dioxide is captured.

The invention discloses an aviation kerosene quality online detection and optimization system based on a green hydrogen substitution technology, and relates to the technical field of quality detection, and the aviation kerosene quality online detection and optimization system comprises a quality monitoring module, an optimization control module and a carbon footprint tracking and verification module. The quality monitoring module monitors the purity of sulfide, aromatic hydrocarbon and hydrogen in real time through a multispectral and electrochemical sensor, determines the optimal mounting position of the sensor by combining hydrodynamic analysis, triggers early warning when the sensor exceeds the standard, and pushes the sensor to the optimization module. The optimization control module dynamically adjusts temperature, pressure and green hydrogen flow based on a deep reinforcement learning algorithm, constructs a multi-objective optimization model, maximizes sulfur removal efficiency, reduces energy consumption and carbon emission, and realizes closed-loop intelligent regulation and control; according to the method, the accuracy and real-time performance of aviation kerosene quality detection and regulation are improved, effective tracking and verification of the green hydrogen full-life-cycle carbon footprint are realized, and the green sustainable development of aviation kerosene production is promoted.

The invention relates to the technical field of hydrogen detection, in particular to a hydrogen detection and measured value correction method based on a hydrogen sensor, and the method comprises the following steps: analyzing the change trend of voltage data in an active unit at each moment and in a preset duration before the moment, and the correlation of the voltage data between the active unit and a reference unit; determining hydrogen purity responsivity; the hydrogen compensation confidence coefficient is determined by analyzing the change trend of the hydrogen purity responsivity at each moment and all moments in a previous preset time period and the average distribution and dispersion degree of the hydrogen purity responsivity, so that the hydrogen concentration at each moment is corrected. According to the invention, the influence of cross interference of other combustible gases except hydrogen and baseline drift of the hydrogen sensor on hydrogen detection and concentration measurement is solved, and the long-term stability of hydrogen concentration monitoring and the accuracy and reliability of a measurement result are improved.

The triangular runners are arranged on the inner sides of an anode plate and a cathode plate of the PEM electrolytic bath, the vertex angle is 30-90 degrees (preferably 45-60 degrees), the depth of each runner is 0.5-5 mm, the width of each runner is 0.5-5 mm, the interval of each runner is 1-10 mm, and the triangular runners can be arranged in parallel, staggered and the like. The anode plate and the cathode plate can be made of metal (such as stainless steel and titanium alloy) or graphite materials, and cooling channels can be arranged outside the anode plate and the cathode plate. The membrane electrode assembly comprises a proton exchange membrane (such as a perfluorosulfonic acid membrane), an anode catalyst layer (such as iridium dioxide) and a cathode catalyst layer (such as platinum or platinum alloy). According to the electrolytic cell, fluid disturbance is increased, gas discharge is improved, membrane electrode hydrogen attachment is effectively reduced, proton conduction and electrode reaction activity are improved, and compared with a traditional electrolytic cell, under the same condition, the current density, the hydrogen production efficiency and the hydrogen purity are higher, energy consumption and cost are lower, and good application prospects and economic benefits are achieved.

The utility model discloses a multi-stage treatment system for high-salinity wastewater, which comprises a water sample detection and analysis system for sampling and analyzing the high-salinity wastewater in at least three batches to obtain the pH value, COD (Chemical Oxygen Demand), TDS (Total Dissolved Solids), hardness and the numerical value range of each pollutant content of the wastewater; the ozonization system is used for fully contacting the detected and analyzed high-salinity wastewater with ozone to obtain ozonized effluent; the pretreatment system is used for settling and filtering the ozonized effluent to obtain pretreated effluent and a pretreated concentrated solution; the electrolytic hydrogen production system is used for carrying out in-situ electrolysis on the pretreated effluent to obtain hydrogen, oxygen and a wastewater concentrated solution; the membrane distillation system is used for carrying out membrane distillation treatment on the wastewater concentrated solution to obtain pure water and a membrane distillation concentrated solution; the evaporation system is used for carrying out evaporation treatment on the pretreatment concentrated solution and the membrane distillation concentrated solution to obtain solid waste. According to the utility model, the wastewater utilization rate is greater than 80%, the hydrogen purity is greater than 99.9%, and the TDS of membrane distillation pure water is less than 50mg / L.

The invention relates to the technical field of hydrogen energy, in particular to a methanol reforming hydrogen production system and a control method thereof.The system comprises a methanol-water mixing module, a fused salt phase change energy storage module, a reforming reaction module and a post-treatment module which are sequentially communicated; the fused salt phase change energy storage module comprises a phase change energy storage fused salt reactor as well as a heat release device I and a heat release device II which are arranged in the fused salt reactor, the output end of the methanol-water mixing module is connected with the heat release device I, and the output end of the heat release device I is connected with the reforming reaction module; the reforming reaction module comprises a reforming reactor with a built-in axial heating tube bundle, a catalytic reaction cavity is formed between tubes of the axial heating tube bundle, an in-tube channel of the axial heating tube bundle and the second heat release device form a circulation loop, and a heat transfer working medium is arranged in the circulation loop. By combining phase change energy storage and an efficient heating working medium circulation loop, the problem that the temperature of a catalyst is not constant in a traditional hydrogen production process is solved, and the reaction efficiency, the hydrogen yield and the hydrogen purity of the system are fundamentally improved.

The invention relates to the technical field of gas adsorption materials, in particular to special silica gel for pressure swing adsorption hydrogen extraction and a preparation method thereof. The special silica gel for pressure swing adsorption hydrogen extraction comprises pretreated adsorption silica gel and advanced treatment adsorption silica gel, wherein the pretreated silica gel is specially used for capturing polar molecules; and the silica gel is deeply treated to accurately adsorb small-molecule gas. During preparation, a graded functionalization strategy is adopted, the stability of a silica gel framework is enhanced through acid activation, a multi-stage adsorption interface is constructed through amino / fluorocarbon directional grafting, and active components are fixed through chemical bonding to avoid loss. During application, a double-tower pressure swing adsorption process is adopted, the pretreatment adsorption tower preferentially removes strong adsorbate, the deep treatment adsorption tower improves hydrogen purity through hydrophobic screening, and gradient pressure reduction and pulse nitrogen desorption technologies are matched, so that efficient regeneration of the adsorbent is realized. A single material system breaks through a mass transfer barrier of a traditional multi-adsorbent combination, has the characteristics of high-selectivity adsorption and low-energy-consumption desorption, and is suitable for efficient recovery of hydrogen resources in synthesis ammonia tail gas.

The utility model discloses a high-pressure hydrogen filling system of a sample for a metal material impact test, which comprises a sample hydrogen filling container, a high-pressure recovery container, a low-pressure recovery container, a waste gas tank, a plurality of manual valves, a pressure monitoring device and a hydrogen purity monitoring device which are connected with one another through a process pipeline, the pressure monitoring device is used for monitoring system pressure, and the hydrogen purity monitoring device is used for monitoring hydrogen purity in the pipeline. The utility model provides a movable sample hydrogen charging system, which simulates the service state of a high-pressure hydrogen-contacting equipment material, ensures that enough diffusible hydrogen exists in the material, simultaneously controls the use amount of hydrogen, recycles the used hydrogen, avoids unsafe factors caused by hydrogen emission, can meet the requirement of carrying out an impact test on a metal material under a hydrogen charging condition, and is high in practicability. And a convenient method is provided for metal material hydrogen embrittlement research.

The invention discloses an AEM hydrogen production system adapting to variable working conditions and a start-stop control method of the AEM hydrogen production system. The AEM hydrogen production system comprises a working condition sensing module, a dynamic cooperative control module, a self-adaptive start-stop module, an electrolytic bath unit, an electrolyte circulating unit and a hydrogen purification unit, the method comprises the steps that when starting and stopping are triggered, the working condition sensing module collects multiple parameters, the dynamic cooperative control module calculates a working condition adaptation coefficient and adjusts electrolysis parameters, and the self-adaptation starting and stopping module executes the starting and stopping process in stages. Through multi-module parameter linkage, the problem that electrolysis parameters are not matched under variable working conditions is solved, the hydrogen production efficiency and the hydrogen purity are improved, membrane damage in the start-stop stage is reduced, and stable operation of the system is guaranteed.

The invention discloses a method for improving alkaline water electrolysis hydrogen production efficiency by using electrolyte concentration difference, and belongs to the technical field of water electrolysis hydrogen production. The method comprises the following steps: adding KOH electrolyte with the concentration of 30wt% into the cathode region on one side of the diaphragm, and adding KOH electrolyte with the concentration of 35wt% into the anode region on the other side of the diaphragm; and electrifying the electrolytic bath, controlling the temperature to be 80-90 DEG C, and carrying out electrolytic reaction on the water under the action of the electric field. The hydrogen production efficiency of alkaline electrolyzed water is improved by utilizing the electrolyte concentration difference, the hydrogen production efficiency and the hydrogen purity can be improved, the energy consumption and the equipment cost can be reduced, the reliability and the durability of the system are improved, meanwhile, the environmental influence is reduced, and a positive role is played in promoting the production and the application of green hydrogen.

The invention provides a hydrogen production system which comprises at least one water electrolysis hydrogen production device used for electrolyzing water to produce hydrogen and oxygen, and each water electrolysis hydrogen production device comprises a hydrogen-alkali mixture outlet and an oxygen-alkali mixture outlet; a hydrogen-alkali mixture outlet or an oxygen-alkali mixture outlet of each water electrolysis hydrogen production device is independently provided with a gas analysis device and an alkali liquor supply adjusting device, and the gas analysis device is used for analyzing the hydrogen purity of the hydrogen-alkali mixture outlet or the oxygen purity of the oxygen-alkali mixture outlet of the water electrolysis hydrogen production device. The alkali liquor supply adjusting equipment is used for supplying and adjusting alkali liquor of the water electrolysis hydrogen production equipment, and the problems that gas produced by an existing electrolytic bath is separated and analyzed through the same separator, the electrolytic bath with poor gas product purity in a system cannot be diagnosed, and then the faulted electrolytic bath cannot be rapidly positioned and isolated, and the system is not easy to operate are solved. And the electrolytic bath alkali liquor cannot be independently supplied and adjusted, so that the hydrogen production efficiency of the electrolytic bath in the hydrogen production system is low.

The invention discloses a method for producing hydrogen by gasifying plastic biomass, which comprises the following steps of: physically grading waste plastics according to different types (such as polyethylene, polypropylene, polyvinyl chloride and the like), sorting and treating the waste plastics by adopting an infrared component analyzer, a pyrolysis experiment, laser cutting and other technical means, adjusting the particle size of the waste plastics to be 1-3cm, and carrying out extrusion molding on the waste plastics. And a proper treatment mode is adopted according to pyrolysis characteristics of different plastics, so that the gasification reaction efficiency is improved. Therefore, through fine temperature and atmosphere regulation and control, the hydrogen generation efficiency is improved, the emission of byproducts is reduced, the catalytic efficiency is improved by introducing the composite catalyst, the service life of the catalyst is prolonged, the hydrogen purification process adopts the combination of membrane separation and a temperature swing adsorption method, so that the hydrogen purity reaches 99.99% or above, and the production cost is reduced. According to the technology, the hydrogen yield and purity are remarkably improved, the service life of the catalyst is prolonged, meanwhile, emission of greenhouse gas and harmful by-products is effectively reduced, and remarkable economic and environmental benefits are achieved.

The invention belongs to the technical field of methanol hydrogen production, and discloses an online methanol hydrogen production global control system, which comprises a feeding and evaporation unit, a reforming reaction unit, a gas purification and separation unit, a hydrogen storage and supply unit, a multi-source sensor group and a controller, the controller comprises a soft measurement module, a double-layer model prediction control module and a safety degradation module, and the soft measurement module estimates CO concentration in real time based on characteristics such as a temperature field, pressure drop and heating power. The double-layer model predictive control module realizes comprehensive optimization of hydrogen purity, energy efficiency and catalyst life through combination of inner-layer steady-state control and outer-layer economic optimization, and the safety degradation module triggers limited power or inerting purging operation under abnormal conditions. According to the invention, the whole-process optimal control from feeding, reaction, purification to hydrogen supply can be realized, the hydrogen purity and the system efficiency are improved, the CO concentration fluctuation is reduced, the service life of the catalyst is prolonged, and continuous and safe hydrogen supply is still maintained under the condition of sensor failure or operation disturbance.

The utility model relates to the technical field of hydrogen production equipment, and discloses an alkaline water electrolysis hydrogen production system with an automatic replenishment function, which comprises an electrolytic bath, and an oxygen collection subsystem, a hydrogen collection subsystem, an automatic alkaline liquor replenishment subsystem, an automatic electrolyzed water replenishment subsystem and an electrolyte concentration detection subsystem which are connected with the electrolytic bath, the automatic alkali liquor replenishment subsystem is arranged at an alkali liquor replenishment port of the electrolytic bath and is connected with the oxygen collection subsystem and the hydrogen collection subsystem through an electrolyte collection pipeline; the automatic electrolyzed water supply subsystem is arranged at an electrolyzed water supply port of the electrolytic bath; the electrolyte concentration detection subsystem is electrically connected with the electrolytic bath, the automatic alkali liquor supply subsystem and the automatic electrolyzed water supply subsystem; the system has the advantages of improving the electrolysis efficiency, reducing bubble accumulation, improving the hydrogen purity and the like, and solves the technical problems of electrolyte solution consumption, bubble accumulation, low hydrogen-oxygen separation efficiency and the like in the prior art.

The utility model discloses a hydrogen purity measuring device for hydrogen cooling generator belongs to hydrogen cooling generator accessory technical field, including the inner cooling water tank, the inner cooling water tank top is provided with the mounting hole, the mounting hole inside fixedly connected with the sealed connecting piece, sampling measurement mechanism, sampling measurement mechanism includes a plurality of sampling tubes, a plurality of sampling tubes's middle part all with sealed connecting piece through fixed connection, one end all stretches into the inner top of inner cooling water tank, and the other end is connected with same current -collecting main pipe. The utility model discloses through setting up a plurality of sampling tubes, multi -point site pertinence sampling, eliminates the detection blind area, and sampling tube stretches into the inner top of inner cooling water tank, and covers the edge corner dead angle, hydrogen gas air inlet nearby, inner cooling water exhaust port nearby etc.

The utility model discloses a hydrogen process detection assembly device for a fuel cell engine. The hydrogen process detection assembly device comprises a hydrogen process flow collection pipeline and a hydrogen purity detection branch which are integrated in a tool frame, one end of the hydrogen process flow collecting pipeline is connected with a hydrogen supply pipe inlet, the other end is connected with a hydrogen supply pipe outlet, and a sampling gas inlet connector is formed in the middle of the hydrogen process flow collecting pipeline; one end of the hydrogen purity detection branch is connected with the sampling gas inlet interface, and the other end is connected to the sampling gas outlet. According to the test device assembly, integration of a hydrogen purity detection function and a hydrogen flow process acquisition and analysis function is realized, an online gas flow detection method is provided for a hydrogen test for a fuel cell engine, and a convenient and effective online detection measure is also provided for safety management of a hydrogen medium for the fuel cell engine; the two devices are compatible and used independently, operation is easy, all devices installed in the device meet national standard anti-explosion test requirements, and the device is efficient and safe.

The invention discloses a method for producing hydrogen by catalytic gasification of oil-containing sludge, which comprises the following steps: directly feeding the oil-containing sludge into a fixed bed gasifier, pyrolyzing and cracking at the high temperature of 700-900 DEG C to generate hydrogen, methane and carbon oxides, and simultaneously generating solid carbon residues, arranging a catalytic wall compounded by 50% titanium-nickel alloy and 50% aluminum oxide in the gasifier, hydrogen release is promoted at high temperature, coke accumulation is reduced, the gasification efficiency is improved, airflow control is oriented, a high-temperature corrosion-resistant airflow guide plate with an adjustable angle is arranged in the gasification furnace, a gas flowing path is optimized, and the hydrogen yield is improved. Therefore, the solid oxide fuel cell and the tail gas recovery system achieve energy self-circulation and tail gas cracking, the overall energy utilization efficiency is improved, meanwhile, pollution of harmful organic matter is reduced through a TiO photocatalytic degradation system, the environmental protection property is improved, and compared with the background technology, the solid oxide fuel cell and the tail gas recovery system have the advantages of being simple in structure and convenient to use. The problems of low energy efficiency, poor hydrogen purity, high carbon emission and difficulty in byproduct treatment in the traditional technology are solved.

This disclosure relates to a two-stage purification method and system for fuel cell-grade hydrogen. The method involves first passing high-purity hydrogen feedstock purified from a PSA unit through a desulfurization unit to adsorb trace amounts of sulfides (such as hydrogen sulfide and carbonyl sulfide), and then introducing the desulfurized hydrogen into a decarbonization unit to adsorb trace amounts of carbon monoxide. This achieves effective removal of trace sulfides and carbon monoxide from the high-purity hydrogen. During operation, this method effectively adsorbs sulfides and carbon monoxide without requiring continuous pressure swing cycle adsorption. It offers a longer single adsorption cycle, more convenient operation, and easier start-up and shutdown. This method improves hydrogen purity and ensures hydrogen yield while simultaneously producing hydrogen for fuel cells.

The invention discloses an efficient gas-liquid separation device for hydrogen production through water electrolysis and capable of preventing water pollution, and relates to the technical field of hydrogen-liquid separation through electrolysis, the efficient gas-liquid separation device comprises AEM hydrogen production equipment and a first assembly installed on the AEM hydrogen production equipment, and the AEM hydrogen production equipment comprises a heat exchange assembly, a circulating water tank, an AEM electrolytic cell, an interface panel and a gas-liquid separation assembly; the mixed product airflow drives the forward blade part to rotate, the spiral acceleration effect of arc-shaped twisted blades can further enhance the strength of a centrifugal force field, the capture efficiency of the arc-shaped blades on airflow kinetic energy is improved, and stable high-speed rotation of the blades is ensured; the forward blade component drives the reverse blade component to rotate reversely through linkage bevel gear transmission, a sawtooth-shaped inclined structure of a reverse blade and airflow form a shear angle, liquid drop aggregate which is not completely separated can be efficiently crushed, the escape rate of tiny liquid drops is reduced through the cutting effect of the sawtooth edge on a central vortex, the gas-liquid separation efficiency is overall improved, and the gas-liquid separation efficiency is improved. The hydrogen purity is improved.

The application discloses a three-tower series connection pressure swing adsorption device and a pressure equalization process thereof, adopts a set of pressure swing adsorption device, sets a multi-step series connection pressure equalization process, and adopts a three-tower simultaneous adsorption mode, so that the yield is obviously improved, the energy consumption and equipment investment are reduced, and the product gas quality is guaranteed. The three-tower series connection pressure swing adsorption device is used for pressure swing adsorption hydrogen extraction, the product hydrogen yield is obviously higher than that of an existing first-stage pressure swing adsorption hydrogen extraction device under the premise that the product hydrogen purity and impurity content meet high-purity hydrogen requirements, the three-tower series connection pressure swing adsorption device is used for pressure swing adsorption oxygen production and nitrogen production, and unit oxygen production power consumption and unit nitrogen production power consumption are obviously lower than the minimum index requirements in related standards under the premise that oxygen purity and nitrogen purity meet basic parameter requirements.

The utility model discloses a water electrolysis hydrogen production system which comprises a water purification device, a water electrolysis hydrogen production device, a hydrogen purification device and a hydrogen conveying device, and the water purification device comprises a water purifier; the water electrolysis hydrogen production device comprises a water supply module, an electrolytic bath and a water-vapor separator, the water supply module comprises a water tank, a circulating water pump and a heat exchanger, the water tank is connected with the water purifier, the electrolytic bath is provided with a pure water inlet and a hydrogen outlet, the water tank is provided with a first water level meter, a heating element and a thermometer, the water-vapor separator is provided with a second water level meter, and the pure water inlet is provided with a conductivity meter; the inlet end of the hydrogen purification device is connected with the gas outlet of the water-vapor separator; the hydrogen conveying device comprises a back pressure valve, a flow meter and a dew-point instrument, the inlet end of the back pressure valve is connected with the outlet end of the hydrogen purification device, and the outlet end of the back pressure valve is connected with the flow meter and the dew-point instrument respectively. The hydrogen purification device can improve the hydrogen purity, flexibly control the temperature of pure water and accurately check system faults in time.

The application relates to the technical field of hydrogen production control by electrolysis of water, and discloses an alkali electrolysis system energy consumption-temperature-purity collaborative prediction control method, which acquires operation data and control targets of an alkali electrolysis system, generates a plurality of candidate operation conditions according to the operation data, the control targets and equipment operation ranges; predicts electrolytic cell voltage, hydrogen production, oxygen production and unit hydrogen production energy consumption corresponding to the candidate operation conditions through an electrochemical model; predicts electrolytic cell temperature state through a thermal model; predicts hydrogen purity and oxygen purity through a gas purity model; performs coupling evaluation on the unit hydrogen production energy consumption, the electrolytic cell temperature state, the hydrogen purity and the oxygen purity to form a collaborative prediction result, determines a target operation condition from the candidate operation conditions meeting constraint conditions, and outputs corresponding control parameters; and corrects model parameters according to actual operation data. The alkali electrolysis system operation condition selection rationality can be improved.

The present invention relates to a device for directly preparing dry pure hydrogen by high-temperature electrolysis. A water vapor generator is connected between a pure water tank and a proton-conducting SOEC electrolyzer to evaporate water from the pure water tank into water vapor and provide water vapor to the proton-conducting SOEC electrolyzer. The proton-conducting SOEC electrolyzer is composed of a plurality of electrolysis units connected in series. Each electrolysis unit includes an oxygen side channel and a hydrogen side channel located on opposite sides of a proton-conducting high-temperature solid electrolyte. After water vapor enters the oxygen side channel and is electrolyzed, it loses electrons to produce oxygen. The electrolyzed hydrogen ions enter the hydrogen side channel through the proton-conducting high-temperature solid electrolyte to obtain electrons and directly obtain dry hydrogen. A hydrogen storage device is connected to the hydrogen side channel of the proton-conducting SOEC electrolyzer to receive and store hydrogen. The device for directly preparing dry pure hydrogen by high-temperature electrolysis has the advantages of high hydrogen purity, low dew point, short startup time, high hydrogen production efficiency, simple process, and higher safety and reliability.

The invention discloses a device and a method for gas-liquid separation, and belongs to the technical field of gas-liquid separation of a hydrogen supply circulating system of a hydrogen fuel cell engine. In order to solve the problems that in the prior art, separation efficiency and system resistance are difficult to balance, and separation of liquid drops with different particle sizes and discharge of impurity gas cannot be considered at the same time, the device comprises an upper shell and a lower shell, the upper shell is divided into a rough filtration cavity and a fine filtration cavity through a longitudinal partition plate, and a radial flow guide assembly and an I-shaped impact separation assembly are arranged in the rough filtration cavity; a cyclone separator with an inner cylinder is arranged in the fine filtration cavity, and the lower shell forms a water collection cavity; a gas-liquid mixture is drained to the impact separation assembly through the flow guide assembly to be separated into large liquid drops and then enters the cyclone separator to be separated into small liquid drops through centrifugal force, separated liquid converges into the water collection cavity, and the gas outlet cavity controls impurity gas to be discharged through the hydrogen concentration sensor. The liquid drops with different particle sizes are efficiently separated, the system resistance is reduced, the hydrogen purity is ensured to meet the requirement, the hydrogen recycling rate is improved, and the device is suitable for a hydrogen supply circulating system of a hydrogen fuel cell engine.