119 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 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 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 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 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 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 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 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.

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 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.

The utility model discloses a kind of hydrogen fine desulfurization purification devices, it relates to hydrogen purification technical field, the hydrogen fine desulfurization purification device, including purification box, the outer wall one side of purification box is fixedly connected with support frame, the top end of support frame is fixedly connected with top end air inlet tank by connecting top seat, one end of top end air inlet tank is fixedly connected with air inlet pipe by jar mouth one, the inner wall of top end air inlet tank is fixedly connected with multiple fixed frame, the inner wall of multiple fixed frame is fixedly connected with filter plate one, the bottom of support frame is fixedly connected with multiple base, the top of multiple base is fixedly connected with flushing dust removal tank, the outer wall of flushing dust removal tank is fixedly connected with multiple fixed ring.The utility model hydrogen fine desulfurization purification device, it has the sulphide and other impurities in hydrogen can be effectively removed, hydrogen purity promotes advantage, and compared with traditional wet desulfurization, a large amount of wastewater generation is reduced, and environmental pollution risk is reduced.

The invention relates to the field of natural gas hydrogen doping, and particularly discloses a methanol hydrogen production and doping system and a methanol hydrogen production and doping method suitable for existing natural gas gate station reconstruction from the perspective of engineering design, and the methanol hydrogen production and doping system comprises a skid-mounted methanol reforming hydrogen production module which comprises a methanol storage tank, a catalytic reforming reactor and a heat conduction oil circulation unit, the catalyst is used for generating hydrogen-containing mixed gas through catalytic reforming reaction; the pressure swing adsorption purification module and the COcapture module are connected with an outlet of the catalytic reforming reactor; through the skid-mounted modular design, the system can be rapidly deployed by directly utilizing existing facilities of the natural gas gate station, huge investment for newly building a hydrogen conveying pipeline is omitted, the danger of hydrogen conveying is avoided, meanwhile, the energy consumption cost in the hydrogen production process is greatly reduced through a heat recovery mechanism of the heat conduction oil circulation unit, and the energy consumption is reduced. And efficient utilization of energy is realized. The pressure swing adsorption purification module is combined with the COtrapping function, so that the hydrogen purity is greatly improved, the COtrapping rate of 99% or above is achieved, and carbon emission is effectively reduced.

The utility model relates to a device for gas-liquid separation belongs to hydrogen fuel cell engine hydrogen supply circulation system's gas-liquid separation technical field, aiming at the problem that separation efficiency and system resistance are difficult to balance in prior art, cannot give consideration to different particle size droplet separation and impurity gas discharge, the device includes upper casing and lower casing, the upper casing is divided into rough filter cavity and fine filter cavity through vertical partition, is equipped with radial guide component and I -shaped impact separation component in rough filter cavity, is equipped with cyclone separator with inner cylinder in fine filter cavity, and lower casing forms water collecting cavity, gas-liquid mixture is guided to impact separation component and separates big droplet after being guided to guide component, enters cyclone separator and separates small droplet through centrifugal force, and separated liquid converges into water collecting cavity, and the outlet cavity passes through hydrogen concentration sensor control impurity gas discharge, the utility model realizes different particle size droplet high -efficient separation, reduces system resistance, guarantees that hydrogen purity meets the requirement, promotes hydrogen recycling rate, is applicable to hydrogen fuel cell engine hydrogen supply circulation system.

The present application relates to the technical field of new energy hydrogen production, and discloses a new energy consumption measurement method for hydrogen production process combined with real-time data. The method comprises obtaining hydrogen production system operation parameters and new energy power generation data, the hydrogen production system operation parameters including electrolytic cell voltage fluctuation curve and hydrogen purity detection value, and the new energy power generation data including wind power prediction deviation rate and photovoltaic actual output curve; a new energy consumption evaluation model is established, the electrolytic cell voltage fluctuation curve and the wind power prediction deviation rate are time-aligned, and a dynamic matching degree index set is generated; based on the set, a multi-scale feature extraction network is called to analyze the photovoltaic actual output curve, and a fusion analysis result containing output stability and consumption potential features is obtained; the result is input into a consumption optimization model for adaptive weight distribution, and a new energy consumption measurement value containing time dimension consumption efficiency sequence and hydrogen production equipment response parameters is output, which is suitable for the new energy consumption evaluation and scheduling demand in hydrogen production.

This invention belongs to the field of biochar gasification hydrogen production technology, specifically designing a method and apparatus for preparing high-purity hydrogen, including the following steps: S1, a mixture of biochar and sodium borate is fed into the apparatus for crushing, drying, and preheating; S2, the mixture from step S1 is fed into a reaction chamber, and carrier gas and steam are introduced for a high-temperature reaction, yielding a mixed gas and solid waste; S3, the mixed gas from step S2 is passed through a gas-solid separator and a pressure swing adsorption device, finally reaching a hydrogen-rich collection device to obtain high-purity hydrogen; S4, the solid waste from step S2 is fed into a waste residue treatment tank, and after heating treatment, regenerated sodium borate is generated. The regenerated sodium borate and biochar are then taken out and fed back into the apparatus for recycling. This invention uses biochar as raw material and couples it with a sodium borate recycling process, offering advantages such as high hydrogen purity, low carbon footprint, environmental friendliness, and sustainable operation, providing an efficient and feasible technical solution for biochar hydrogen production.

The utility model discloses a methane cracking hydrogen production and carbon product continuous separation and purification device which mainly comprises a methane cracking reaction part for providing a reaction space for methane cracking reaction, a carbon product separation and collection part for realizing separation of a carbon product and metal catalyst impurities and facilitating collection of the carbon product, and a carbon product separation and collection part for realizing separation of the carbon product and metal catalyst impurities. The catalyst feeding part is used for timely supplementing a catalyst consumed in the reaction process, and the gas circulating part is used for recycling uncracked methane, improving the yield of hydrogen production through methane cracking and reducing methane gas waste. According to the utility model, methane is cyclically cracked in the molten metal catalyst, so that the methane cracking efficiency is improved; by collecting and purifying a carbon product, the operation cost is reduced, the hydrogen purity is improved, clean energy is generated, and carbon-free emission of energy is realized.

This invention discloses a high-hydrogen-density liquid organic hydrogen carrier and its applications, belonging to the field of hydrogen energy storage and utilization technology. The liquid organic hydrogen carrier is a composite system of a functionalized nitrogen-containing heterocyclic compound and a metal-organic framework material supported on a non-precious metal catalyst. The nitrogen-containing heterocyclic framework is connected with electron-donating and electron-withdrawing groups, constructing an intramolecular electron push-pull system. The non-precious metal catalyst is supported inside the pores or on the surface of the metal-organic framework material. Through molecular structure design and catalyst system optimization, this invention achieves a hydrogen storage density of not less than 7.0 wt%, a dehydrogenation onset temperature of not more than 150℃, and a dehydrogenated hydrogen purity of not less than 99.99%, with excellent cycle stability and low catalyst cost. This liquid organic hydrogen carrier can be widely used in renewable energy storage, long-distance hydrogen transportation, vehicle-mounted hydrogen sources, and distributed energy supply systems.

The invention relates to the technical field of filling stations, in particular to a methanol filling and methanol hydrogen production filling integrated station. Comprising a methanol storage tank, a desalted water storage tank, a reforming reaction system, a hydrogen purification system, a hydrogen purity detector, a hydrogen storage system and a PLC (Programmable Logic Controller), an outlet of the reforming reaction system is sequentially communicated with a hydrogen purification system, a hydrogen purity detector and a hydrogen storage system through pipelines, the hydrogen purity detector and the two variable-frequency metering pumps are all electrically connected with the PLC, and the methanol storage tank is communicated with a methanol filling machine through a pipeline. A hydrogen storage tank of the hydrogen storage system is communicated with a hydrogen filling machine through a pipeline. According to the invention, methanol filling can be realized, and hydrogen can be prepared to meet the filling requirement of a hydrogen fuel automobile, so that the cost can be effectively reduced.

The invention discloses a collaborative optimization hydrogen production system and method based on hydrogen purity and hydrogen evolution overpotential. The collaborative optimization hydrogen production system based on hydrogen purity and hydrogen evolution overpotential comprises an electrolytic bath, a hydrogen purity detection device, a power supply, an electrical parameter detection device, a first auxiliary parameter detection device and a second auxiliary parameter detection device. According to the collaborative optimization hydrogen production method based on the hydrogen purity and the hydrogen evolution overpotential, data are collected in real time, and the size and the change trend of the hydrogen evolution overpotential are mastered in real time through accurate calculation, so that real-time collaborative optimization adjustment is facilitated. According to the scheme, the purity requirements of different industrial-grade, vehicle-mounted and electronic-grade scenes can be met by detecting the hydrogen purity in real time, calculating the hydrogen evolution overpotential in real time and cooperatively optimizing and adjusting the parameters of the power supply, so that the cost of the whole hydrogen production system is reduced; when the purity or the overpotential is abnormal, the power supply can be quickly adjusted, the corrosion loss of the electrode can be reduced, the service life of the electrode is prolonged, and the annual maintenance cost is reduced.

The application relates to the technical field of hydrogen detection, in particular to a hydrogen detection and measurement value correction method based on a hydrogen sensor, which comprises the following steps: determining a hydrogen purity response degree by analyzing the change trend of voltage data in an active unit within a preset time length at each moment and the correlation between voltage data of the active unit and a reference unit; and determining a hydrogen compensation confidence degree by analyzing the change trend of the hydrogen purity response degree at all moments within a preset time period, the average distribution and the dispersion degree of the hydrogen purity response degree, so as to correct the hydrogen concentration at each moment. The application solves the influence of cross interference of other combustible gases and baseline drift of the hydrogen sensor on hydrogen detection and concentration measurement, and improves the long-term stability, the accuracy and the reliability of the measurement result of the hydrogen concentration monitoring.

The application discloses a design, construction and operation parameter optimization method of a high-impurity salt mine hydrogen storage library. Through early drilling and coring and testing, the influence of mineral composition and microorganisms in the salt layer on hydrogen purity is accurately evaluated, so that suitable salt-containing strata that can be used for hydrogen storage are screened out before construction, and the shape of the salt cavity is detected and the sealing property of the salt cavity is tested; in combination with sediment connectivity and porosity test data, the hydrogen storage capacity of the cavity is evaluated; the depth of the hydrogen-halogen water interface in the cavity is controlled to ensure the formal operation of the hydrogen storage cavity, and the hydrogen storage efficiency can be improved in combination with the production mode of hydrogen without a cushion bottom; thus, a hydrogen storage library meeting the hydrogen storage requirements is constructed in the high-impurity salt mine, and efficient utilization of the poor salt mine is realized.

This invention discloses an online hydrogen purity monitoring system and method for electrolyzers, belonging to the field of electrolytic hydrogen production. It includes a condenser dryer, a hydrogen-oxygen detector, a deoxygenator, a drying tower, a connector, valve one, valve two, a filter, and a hydrogen purity detector. The system performs online real-time monitoring of hydrogen purity before and after purification in the electrolyzer system. It can simultaneously evaluate the hydrogen-oxygen barrier performance of the electrolyzer and the effectiveness of downstream hydrogen treatment. Furthermore, it miniaturizes and integrates the equipment for hydrogen purity detection into the electrolyzer system. This invention enables rapid and accurate evaluation of hydrogen purity parameters in the electrolyzer system.

The application discloses a kind of based on hydrogen balance method's heavy hydrogen fuel internal combustion engine car fuel consumption test method, comprising: the fuel component of heavy hydrogen fuel internal combustion engine car used in accordance with predetermined standard is analyzed to obtain the hydrogen purity of fuel and fuel density;In vehicle CHTC driving cycle, the hydrogen content of exhaust emission unit mileage of CHTC driving cycle is measured and calculated;Based on the hydrogen purity of fuel obtained, fuel density and the hydrogen content of exhaust emission unit mileage, the fuel consumption of vehicle driving cycle is calculated.The application derives the fuel consumption of whole vehicle by measuring the emission mass of hydrogen component in vehicle exhaust emission, based on hydrogen element mass conservation, without damaging the original vehicle hydrogen supply system of whole vehicle, and the test safety is high, and operability is strong.

The invention discloses a regulation and control method and system for improving productivity and hydrogen purity of a methanol-to-hydrogen device. Comprising a gas inlet pipe connected to feed gas, an adsorption tower connected to the upper part of the gas inlet pipe, an evacuation pipe and a reverse discharge pipe which are communicated with the gas inlet pipe, a vacuum device connected to the evacuation pipe, a gas outlet pipe connected to the upper part of the adsorption tower, and a product gas buffer tank connected to the gas outlet pipe, the final charging pipe and the pressure equalizing pipe are communicated with the air outlet pipe, and the pressure equalizing tank is connected to the pressure equalizing pipe. The valve body assembly comprises a first valve body, a second valve body, a third valve body and a fourth valve body, wherein the first valve body and the second valve body are arranged on the air inlet pipe and the air outlet pipe respectively, the third valve body is installed between the air inlet pipe and the evacuation pipe, and the fourth valve body is installed on the air inlet pipe and the reverse release pipe. The fifth valve body is arranged between the gas outlet pipe and the pressure equalizing pipe; and the sixth valve body is arranged between the gas outlet pipe and the final filling pipe. The production capacity and the hydrogen purity of the methanol hydrogen production device can be effectively improved.

The utility model provides a gas-liquid separation device for electrolyzing water, which comprises a separation device main body as well as an input pipeline and an output pipeline which are connected on the separation device main body, the output pipeline comprises a gas output pipe and a liquid output pipe, the separation device main body comprises a liquid device and a gas device which are communicated with each other, and the gas device is arranged above the liquid device; a gas outlet hole connected with a gas output pipe is formed in the top end of the gas device, and a hydrogen purity filter is arranged at the gas outlet hole; a liquid outlet hole connected to the liquid output pipe is formed in the bottom end of the liquid device, and a valve for controlling liquid discharge is arranged at the position of the liquid outlet hole. According to the utility model, hydrogen and water in the hydrogen are separated in the gas device, and the diameters of the filtering holes of the titanium filtering core are small, so that gas can just pass through the filtering holes and liquid is blocked outside, and therefore, anhydrous hydrogen is obtained through filtering and then is subjected to pressure measurement, storage and utilization. And residual water after filtration flows into the liquid container below, and the on-off of the valve can be controlled according to the storage amount of the internal liquid.

The utility model discloses an industrial by -product hydrogen purification system relates to hydrogen purification technical field. After the active carbon adsorption unit processing of the utility model, again through the adsorption of three TSA adsorption towers in TSA adsorption unit, the hydrogen purity after purification is equal to or greater than 99.999%, and the process does not need to consume the chemical reagent that can produce a large amount of waste liquid, and the process is simple.