675 results about "Hydrogen flow" patented technology

The invention discloses an intelligent hydrogen production system and method.The intelligent hydrogen production system comprises a water supply device, a hydrogen production device, a purification device, a hydrogen conveying device, a pressure relief device, a system monitoring unit and a system control unit.The liquid level of a water tank is detected through a first liquid level meter, and the temperature of pure water of the water tank is detected through a first temperature sensor; the conductivity of water treated by the water machine is detected through the first conductivity meter so as to judge the purity degree of the water, the conductivity of electrolyzed water entering the electrolytic bath is detected through the second conductivity meter, the temperature of the electrolyzed water in the electrolytic bath is detected through the second temperature sensor, and it is guaranteed that the water quality and the water temperature in the electrolytic bath meet the electrolysis requirement. The liquid level of separated water in the water-vapor separator is detected through the second liquid level meter, the dew-point temperature of hydrogen is detected through the dew-point meter, and the actual output flow of hydrogen flowing through the hydrogen outlet is detected through the flow meter. The water temperature, the water level, the hydrogen flow, the conductivity and the like can be monitored, safe and efficient operation of equipment is ensured, and potential safety hazards are prevented.

The invention discloses a fuel cell output voltage control method and system based on fuzzy neural network PID, and the method comprises the steps: building an air-cooled fuel cell voltage model based on an MATLAB / Simulink simulation platform, and obtaining the temperature changes of an air-cooled fuel cell under different working conditions; establishing an air-cooled fuel cell test bench, and obtaining a polarization curve of output voltage changing along with current; according to experimental data, calibrating the semi-empirical equation by adopting a nonlinear least square method, and comparing experimental results to verify the accuracy of the model; the input hydrogen flow is changed through the PID controller, so that stable control of the output voltage of the galvanic pile is realized, and the power generation performance of the battery is improved; a fuzzy neural network is adopted to optimize a PID controller, control parameters of PID are adjusted in a self-adaptive mode according to the error between expected voltage and actual voltage and the error change rate, and therefore a better temperature control effect is achieved. The method has the advantages of high robustness, high response speed and the like, and ensures that the voltage output of the fuel cell stack is maintained at a fixed preset value.

The invention provides a method for growing an oversized diamond polycrystalline film. The method comprises the following steps: S1, cleaning and drying a monocrystalline silicon wafer at room temperature; s2, carrying out pretreatment seed crystal on the monocrystalline silicon wafer, covering a diamond nanocrystalline layer on the silicon surface, and putting the monocrystalline silicon wafer into MPCVD (Microwave Plasma Chemical Vapor Deposition) equipment; s3, the cavity is vacuumized, then hydrogen is introduced for purging, and then vacuumizing is conducted again; then hydrogen is introduced, the air pressure is regulated and controlled to be 5-8 torr, and starting is started to ignite the plasma; s4, the microwave power is increased to 70 KW to 75 KW at the speed of 4.5 KW / min to 5.5 KW / min, the air pressure is increased to 165 torr to 180 torr at the speed of 10 torr / min to 30 torr / min, and the temperature is increased to 900 DEG C to 950 DEG C at the speed of 60 DEG C / min; s5, introducing growth gas, wherein the flow rate of hydrogen is 5000-6000 sccm, the flow rate of methane is 100-150 sccm, the flow rate of oxygen is 5-8 sccm, the flow rate of nitrogen is 1-2 sccm, and the flow rate of argon is 800-1000 sccm; and S6, after the growth is finished, cooling at a rate of 30 DEG C / min, and introducing nitrogen into the cavity for vacuum breaking until the temperature is reduced to room temperature, so as to obtain the oversized diamond polycrystalline film. The size of the oversized diamond polycrystalline film reaches 12 inches.

A green ammonia production hydrogen load prediction method based on sparse attention variational Bayes comprises the following steps: acquiring historical data of a green ammonia electrolysis hydrogen production industry through an acquisition sensor, and dividing the historical data into a training set, a verification set and a test set; performing standardization processing on the training set, and constructing an SVAE soft measurement training model; determining a final objective function suitable for SVAE; and performing real-time online prediction on the output target variable by using the current input characteristic variable by adopting the trained SVAE. The SVAE combines CNNs, PSSAM and a cross attention mechanism, and captures a long-term dependency relationship and a complex mutual relationship in industrial data. An optimized objective function is formulated in combination with variational reasoning and a Monte Carlo method and is used for offline training. The SVAE has remarkable advantages in the process of accurately predicting the hydrogen flow and optimizing the production process of the green ammonia, the production efficiency is improved, and the energy consumption is reduced.

The invention discloses a hydrogen storage and transportation system under a wind-solar hydrogen production project and a control method. The hydrogen storage and transportation system at least comprises a hydrogen flowing pipeline and a water flowing pipeline, the hydrogen flowing pipeline at least comprises a first compressor, a low-pressure hydrogen storage container, a third compressor and a second heat exchanger which are connected in sequence; the first compressor is further sequentially connected with a second compressor, a high-pressure hydrogen storage tank, an eighth valve connected with the pressure reducing valve in parallel and a third compressor; the second compressor, the high-pressure hydrogen storage tank and the low-pressure hydrogen storage container are connected in parallel; the high-pressure hydrogen storage tank is connected with the pressure reducing valve through a ninth valve connected with the third compressor in parallel; the first compressor pressure is smaller than the third compressor pressure and smaller than the second compressor pressure; the water flow pipeline at least comprises a first heat exchanger, a first water pump and a second water pump which are sequentially arranged in the water flow direction. The second water pump is in fluid communication with the second heat exchanger; the first heat exchanger is arranged on the cooling water pipeline corresponding to the compressor. The multi-aspect requirements of stable output, efficient storage, energy conservation, environmental protection and the like can be met.

The invention relates to the technical field of fuel cells, in particular to a method and system for accurately controlling the hydrogen stoichiometric ratio of a fuel cell, and the method comprises the steps: firstly, obtaining a quantitative anode health state value through a fusion calculation model by collecting load current, anode inlet and outlet pressure, temperature, high-frequency resistance and other multi-source signals in real time; a feed-forward model based on a load current change rate predicts sudden change of hydrogen demand, and an optimal hydrogen flow instruction is jointly generated in combination with output of a PID controller which adaptively adjusts parameters according to a health state value. According to the method, the integrated diagnosis parameter, namely the anode health state value, is created, so that the internal state of the fuel cell can be accurately perceived and prospectively judged. Through deep fusion of multi-source heterogeneous information such as high-frequency resistance, anode pressure difference, current and temperature, a comprehensive index capable of comprehensively and quantitatively reflecting anode water content, gas concentration and runner smoothness is generated.

The invention discloses an efficient ammonia decomposition hydrogen production system based on the Joule heating effect and belongs to the technical field of clean energy. The system is composed of an ammonia supply module, a Joule thermally driven ammonia decomposition reaction module and a hydrogenation module. Wherein the ammonia supply module consists of a liquid ammonia storage device, a vaporizing chamber and an ammonia gas storage device; the Joule thermally-driven ammonia decomposition reaction module consists of an ammonia gas flow control valve, a reaction tube gas inlet, a reaction tube gas outlet, a Joule heating electrode tip, a direct-current power supply, a temperature sensor, a thermal insulation layer, a reaction tube, a catalyst and a stainless steel alligator clip; the hydrogenation module is composed of a hydrogen purifying and drying device, a hydrogen compressor, a hydrogen cooling unit, a high-pressure hydrogen storage tank, a hydrogen flow control valve and a hydrogenation machine. The whole process can be started and stably output within one second, the conversion rate and the electrothermal conversion efficiency both exceed 90%, low energy consumption, quick response and safe operation are achieved, the system is particularly suitable for hydrogen refueling station construction in a future hydrogen energy network, and green hydrogen energy economy development is promoted.

The invention provides a high-power fuel cell hydrogen system and a control method, a high-power fuel cell comprises a plurality of galvanic pile groups, the galvanic pile groups are connected in parallel to realize power supply, each galvanic pile group comprises a plurality of galvanic pile units, the galvanic pile units are connected in series one by one, and the hydrogen system adjusts hydrogen distribution among piles according to different working conditions; a hydrogen circulation mode that the hydrogen circulation pump and the ejector are connected in parallel is adopted, so that the hydrogen circulation quantity requirements of the high-power fuel cell under different working conditions can be met; according to the control method, a PID air inlet control strategy with feedforward and a hydrogen circulation control strategy are adopted, the air inlet control strategy can achieve quick response when the working condition of the electric pile changes dynamically, the hydrogen flow and pressure are controlled more quickly and effectively, and the hydrogen circulation control strategy can meet the hydrogen flow requirements under different load working conditions; the reliability and stability of the fuel cell system are improved, the working efficiency of the high-power fuel cell system can be improved, and the service life of the high-power fuel cell system can be prolonged.

The invention discloses a solid hydrogen storage system capacity state estimation method. The method comprises the following steps of: firstly, simplifying a high-dimensional numerical calculation model into a lumped parameter model according to a chemical chemistry kinetic equation of solid hydrogen storage / desorption, and then carrying out linearization processing to obtain a state space equation and a linearization model of a solid hydrogen storage system; then designing extended Kalman filtering for monitoring the state of the solid-state hydrogen storage system, estimating the state of the solid-state hydrogen storage system at the future moment by using an extended Kalman filtering algorithm, and accordingly outputting the state of the hydrogen content SOC of the solid-state hydrogen storage system; and finally, predicting and updating the state of the solid-state hydrogen storage system through loop iteration, and adjusting the SOC estimated value of the solid-state hydrogen storage system in real time. According to the method, the phenomenon of error accumulation in hydrogen flow integration can be avoided, the SOC estimation precision is improved, meanwhile, the hydrogen content state of the system is estimated in real time under the dynamic working condition, dynamic control over system operation is guided, and errors caused by measurement noise and model uncertainty are 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 invention belongs to the technical field of functional sugar alcohol hydrogenation, and particularly relates to a system and a method for intelligently controlling a reaction kettle in a functional sugar alcohol hydrogenation process. Comprising a temperature sensor TT, a pressure sensor PT, a liquid level sensor LT, a hydrogen concentration sensor TZT and a spectrum sensor, and the sensor networks are arranged on a reaction kettle body, a feeding pipeline, a condenser and a hydrogen recovery device. The device is used for collecting temperature, pressure, liquid level and hydrogen concentration in the reaction kettle and spectral data of an outlet sugar alcohol product in real time. The control execution layer comprises a PLC (Programmable Logic Controller), a dynamic valve controller, temperature control equipment and a stirrer speed regulation module; and the dynamic valve controller is connected to the hydrogen supply pipeline and the feeding pump. The hydrogen flow, the temperature and the stirring speed are adjusted in real time through AI dynamic optimization, the sugar alcohol conversion rate is increased to 5%, and the conversion rate fluctuation range is reduced to + / -0.5%.

The invention relates to the technical field of unmanned aerial vehicle power systems, in particular to a low-altitude unmanned aerial vehicle hydrogen-electricity hybrid energy management system and control device.According to the low-altitude unmanned aerial vehicle hydrogen-electricity hybrid energy management system and control device, the residual hydrogen amount can be accurately quantified through combined collection and fusion calculation of hydrogen flow signals and air pressure signals; and the opening state of the proportional valve and the air inlet valve is adjusted in real time under data driving, so that the hydrogen input is matched with the actual power requirement, the voltage, the current and the temperature are synchronously monitored, and fluctuation feature extraction and life parameter calibration are performed on a power output sequence. The operation health degree and the life loss trend of the fuel cell can be dynamically obtained before power distribution, an accurate reference basis is provided for follow-up power allocation, the internal resistance change trend is measured and calculated through voltage and current sampling, and dynamic adjustment of the charge-discharge depth and charge-discharge process parameters is carried out in combination with the health degree. And the usability and the load capacity of the lithium battery are accurately represented.

A fuel system (300) for a gas turbine engine (203). The fuel system comprises a fuel offtake (302) configured to divert a portion of hydrogen fuel from a main fuel conduit (217), a burner (218) configured to burn the portion of hydrogen fuel diverted from the main fuel conduit (217) and at least first and second heat exchangers (306, 310). The first heat exchanger (306) is configured to transfer heat from exhaust gasses produced by the burner (218) to hydrogen fuel in the main fuel conduit (217) and the second heat exchanger (310) is provided upstream in hydrogen flow of the first heat exchanger (306) and is configured to transfer heat from a further heat exchange fluid to hydrogen fuel in the main fuel conduit (217). In an embodiment, the further heat exchange fluid is compressor bleed air bled from a core compressor of the gas turbine engine.

The fuel cell system comprises a gas source, a heat exchange device and a galvanic pile, a hydrogen source is connected with the heat exchange device, hydrogen output by the hydrogen source flows through the heat exchange device, the heated hydrogen is input into the galvanic pile, air output by an air source is input into the galvanic pile, and the galvanic pile is connected with the heat exchange device. The hydrogen and the air are subjected to electrochemical reaction in the electric pile; the electric pile is connected with the heat exchange device, and tail gas of the electric pile flows through the heat exchange device. Before hydrogen and air are input into the galvanic pile according to the set volume ratio, the hydrogen flows through the heat exchange device to be preheated and then is input into the galvanic pile, the hydrogen and the air are subjected to an electrochemical reaction in the galvanic pile to generate tail exhaust fluid, and the tail exhaust fluid flows through the heat exchange device to be subjected to heat exchange and then is discharged. In the whole process, hydrogen and air are subjected to electrochemical reaction in the galvanic pile to generate tail exhaust fluid, and the tail exhaust fluid is used for preheating the hydrogen, so that the utilization of heat carried by the tail exhaust fluid is realized.

The invention relates to the technical field of hydrogen energy storage and control, and discloses a hydrogen storage tank pressure and temperature control method and device based on model predictive control, and the method comprises the steps: determining a hydrogen state equation of a hydrogen storage tank, and constructing a hydrogen mass conservation equation and a hydrogen energy conservation equation; based on the hydrogen mass conservation equation and the hydrogen energy conservation equation, a state prediction model of the hydrogen storage tank state related to the net hydrogen flow change is established, and the hydrogen storage tank state comprises hydrogen pressure and hydrogen temperature; a target function is constructed with the hydrogen storage tank state and the net hydrogen flow as control targets, and constraint conditions are configured; on the basis of the input net hydrogen flow sequence of the state prediction model and the predicted hydrogen storage tank state sequence output by prediction, the target function is subjected to minimum solving, and the optimal net hydrogen flow sequence is obtained through iteration; and adjusting an inlet / outlet valve of the hydrogen storage tank based on the optimal net hydrogen flow sequence. The operation efficiency of the hydrogen storage system can be improved.

The invention belongs to the technical field of diamond preparation, and discloses a high-speed preparation method of a thick diamond film, which comprises the following steps of: uniformly spreading diamond particles on a substrate by using absolute ethyl alcohol, placing the substrate on a sample table in an MPCVD (Micro-Pressure Chemical Vapor Deposition) system, and introducing hydrogen, slowly heating the interior of the MPCVD system to a preset cleaning temperature so as to perform plasma cleaning on the surface of the substrate, and growing the substrate on the basis of the growth hydrogen flow, the methane gas flow, the growth power, the growth temperature and the growth air pressure through a segmented growth method, promoting the growth of nano-scale diamonds in gaps of the diamond particles on the surface of the substrate to connect the diamond particles to obtain a compact and uniform rough thick diamond film, and polishing the rough thick diamond film to obtain a thick diamond film with a smooth surface; the thick diamond film is grown on the substrate on which a layer of diamond particles are paved by using hydrogen and methane gas through a segmented growth method, so that the high-speed preparation efficiency of the thick diamond film is improved.

The invention relates to the technical field of pressure reducing valves, and discloses a high-pressure hydrogen pressure reducing valve and a using method thereof.The high-pressure hydrogen pressure reducing valve comprises a valve pipe assembly, the valve pipe assembly comprises a hydrogen filtering assembly, the two ends of the hydrogen filtering assembly fixedly communicate with valve shells, and the top of the hydrogen filtering assembly fixedly communicates with a gas valve assembly; one end of the hydrogen filtering assembly is fixedly sleeved with an electric heating ring sleeve, the other end of the hydrogen filtering assembly is rotationally connected with a fan wheel, the side face of the fan wheel is rotationally sleeved with a magnetic cutting element, the bottom of the fan wheel is fixedly connected with a rotating wheel, and one end of the inner side of the bottom of the valve shell fixedly communicates with a magnetic cylinder. The problem that groove-shaped erosion marks appear on the sealing face of the valve seat due to the fact that metal impurity particles in a pipeline of the pressure reducing valve impact the valve element and the valve seat along with high-speed hydrogen flow is solved, the metal impurity particles attached to the magnetic cylinder can be recycled, and the problems that resources are wasted and the surface of an outlet of a valve body is frosted when high-pressure hydrogen expands through throttling are solved.

The invention relates to a metal hydride solid hydrogen storage device, in particular to a detachable metal hydride solid hydrogen storage device which comprises a shell, a flange and a blind flange, a hydrogen conveying pipe and the flange are welded to the shell, the hydrogen conveying pipe serves as a hydrogen flow channel, a U-shaped heat exchange pipe and a temperature measuring protective sleeve are welded to the blind flange, and the U-shaped heat exchange pipe serves as the temperature measuring protective sleeve. Hydrogen is absorbed by introducing a hydrogen cylinder into a pipeline system through a pressure reducing valve and then entering a metal hydride solid hydrogen storage device through a hydrogen conveying pipe, so that a first-stage hydrogen absorption process can be completed; a reversible chemical reaction in the hydrogen absorption process is carried out in the forward direction to generate a large amount of heat, if the heat is not discharged in time, the further hydrogen absorption process of the hydrogen storage material can be influenced, at the moment, a certain flow of cooling water is introduced into the upper U-shaped heat exchange pipe by controlling a water path, and the heat generated in the hydrogen storage material is conducted to the wall of the heat exchange pipe through the aluminum annular fins on the heat exchange pipe; and the water is timely taken away by cooling water through convective heat exchange.

The invention discloses a hydrogen charging system and method for a magnesium-based solid hydrogen storage reaction kettle. A hydrogen storage tank is placed in each placement position in an inner cavity of the reaction kettle, and a heat exchange coil pipe is arranged outside each placement position; the hydrogen charging system comprises a hydrogen charging part, a temperature control part and a safety protection part; the hydrogen filling part comprises a hydrogen filling main pipeline; a hydrogen flow controller and a hydrogen heat exchanger are arranged on the hydrogen filling main pipeline; the temperature control part comprises an external heat-conducting oil circulating system, the external heat-conducting oil circulating system comprises a heat-conducting oil tank, a flow bypass pipeline is arranged between the oil inlet pipeline and the oil return pipeline, and a heat-conducting oil shunting automatic switch valve is arranged on the flow bypass pipeline; the safety protection part comprises a safety valve arranged on the reaction kettle, the safety valve is externally connected with an emptying pipeline, a pressure relief bypass pipeline is arranged between the emptying pipeline and the hydrogen filling main pipeline, and an automatic opening and closing pressure relief valve is arranged on the pressure relief bypass pipeline. The system has the advantages that the hydrogen storage tanks in the reaction kettle can be quickly and efficiently filled with hydrogen, and the safety of the system is ensured.

A fuel system for a gas turbine engine includes a fuel offtake configured to divert a portion of hydrogen fuel from a main fuel conduit, a burner configured to burn the portion of hydrogen fuel diverted from the main fuel conduit and at least first and second heat exchangers. The first heat exchanger is configured to transfer heat from exhaust gasses produced by the burner to hydrogen fuel in the main fuel conduit and the second heat exchanger is provided upstream in hydrogen flow of the first heat exchanger and is configured to transfer heat from a further heat exchange fluid to hydrogen fuel in the main fuel conduit. In an embodiment, the further heat exchange fluid is compressor bleed air bled from a core compressor of the gas turbine engine.

The invention relates to the technical field of hydrogen energy conveying and material performance testing, in particular to a testing structure for hydrogen permeation testing in a high-pressure gas-phase hydrogen environment and an installation method and application of the testing structure. The testing structure comprises a sample body and an insulation sealing assembly, and the sample body is of a double-step disc structure; the uppermost edge of the first sealing insulation assembly is flush with the upper end face of the cylindrical platform, the sample body is installed on the inner side of the first sealing insulation assembly in a matched mode, the second sealing insulation assembly is in a shape with an upward opening, and the first sealing insulation assembly is installed in the second sealing insulation assembly in a matched mode. The test surface of the sample body of the test structure and the gas main flow keep a consistent flow velocity field, and when the test structure is used for testing, the permeation behavior of the hydrogen flow on the material surface can be truly reflected; all the clamping and conducting structures are arranged outside the pipe wall of the test pipeline or at the left part of the sample body, so that flow field disturbance is prevented from being introduced into a main airflow path.

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 discloses a nested high-pressure hydrogen pressure reduction and relief integrated device and a use method, and relates to the technical field of high-pressure gas pressure reduction and relief, the nested high-pressure hydrogen pressure reduction and relief integrated device comprises a valve shell, a gland, a valve body, a porous hedging throttling element and a gas outlet pressure control element, the top of the first hedging channel and the top of the second hedging channel are oppositely arranged, so that hydrogen flowing out of the first hedging channel and hydrogen flowing out of the second hedging channel form gas hedging to depressurize high-pressure hydrogen and reduce the flow rate and kinetic energy of the hydrogen; when the pressure of hydrogen entering the communicating cavity is smaller than the designed pressure, the gas outlet pressure control piece enables the valve body to abut against the top of the valve shell so as to close the pressure relief openings, and when the pressure of hydrogen entering the communicating cavity is larger than the designed pressure, the gas outlet pressure control piece enables the valve body to abut against the top of the valve shell so as to close the pressure relief openings. The valve body slides downwards and slides to the position where the pressure relief opening is opened so that part of hydrogen can flow out of the pressure relief opening to relieve the air pressure of the communicating cavity, the structure is simple, the space utilization rate is effectively increased, and cost is effectively reduced.

The present invention discloses a liquid hydrogen pressurization and refueling system synergistically driven by power and heat, at its core is a cascaded cryogenic and high-pressure vessel group, which achieves staged pressurization of liquid hydrogen to 80-100 MPa by combining reciprocating liquid hydrogen pump pressurization and equal-capacity thermal compression using cryogenic and high-pressure vessels, the filling of a vehicle-mounted storage tank occurs through these cascaded vessels; the pressurization and filling processes are closely integrated, with hydrogen flow in the filling process serving as a heat-transfer medium. Efficient in-tank thermal compression of the cryogenic and high-pressure vessels is achieved without additional driving force. Based on the combination of efficient low-pressure compression using the liquid hydrogen pump and high-pressure thermal compression without power consumption, the present invention fully utilized liquid hydrogen cooling capacity to replace the high pump power consumption typically required in the traditional pressurization process; and a cascaded storage tank is combined to reduce the exergy loss in the filling process, resulting in low-energy-consumption continuous filling of the liquid hydrogen refueling station.

A zinc-containing dust fluidization hydrogen group reduction comprehensive utilization method belongs to the technical field of zinc-containing dust treatment, and comprises the following steps: screening and crushing collected zinc-containing dust, and then drying to obtain pretreated zinc-containing dust; nitrogen is introduced into the fluidization reaction device, the zinc-containing dust is added for heating, and after the temperature is stable, hydrogen is introduced to reduce the flow of the nitrogen; when the hydrogen flow reaches a specified value, the hydrogen channel is kept open, the nitrogen channel is closed, and fluidized hydrogen group reduction roasting is carried out by controlling the temperature; after gaseous zinc is formed, the gaseous zinc enters a condensation system with inert gas along with hydrogen flow to be condensed into metal zinc particles, the metal zinc particles are collected and recycled, and solid metal iron is reserved at the bottom of the reaction device; and the roasted gas enters a tail gas treatment system and is recycled after being purified. Hydrogen reduction adopted by the method has lower environmental influence, the rapid and thorough reduction process can be achieved under the high-temperature condition, and the current requirements of green metallurgy and low-carbon economy are met.

The invention relates to the technical field of fuel cells, in particular to a hydrogen feeding amount control method of a hydrogen cell water-gas separation device for an unmanned aerial vehicle, a cyclone separation cavity, a heat exchange condensation cavity and a hydrogen mixing cavity which are sequentially distributed from bottom to top are arranged in a separation shell, and a structure combining multi-stage separation and heat exchange is adopted; the technical problem that a traditional gas-liquid separator cannot thoroughly remove micron-sized liquid drops and gaseous water vapor is solved, liquid water drops are efficiently removed through the cyclone separation cavity, new hydrogen and wet hydrogen are subjected to heat exchange through the heat exchange condensation cavity, residual water vapor is sufficiently condensed and separated out, and finally mixed hydrogen with the dryness meeting the requirement is output. When water in the water-gas separation device for the hydrogen battery is excessive, the opening degree of the first valve of the wet hydrogen inlet is reduced, and the opening degree of the second valve of the new hydrogen inlet is increased at the same time, so that the amount of water entering wet hydrogen in the gas-liquid separator is reduced, and formation of condensed accumulated water in the gas-liquid separator is inhibited.

The invention relates to a design scheme suitable for an electric heating device matched with a hydrogen-based shaft furnace for reducing iron ore, belongs to the technical field of hydrogen metallurgy for directly reducing a hydrogen-based shaft furnace, and aims to solve the problem that the service life of a heating furnace is influenced by aging of a heating rod due to high-temperature reaction between hydrogen and the heating rod. The hydrogen electric heating furnace adopts a separated structure design, hydrogen flows in a nickel-based alloy heating pipeline, and a silicon carbide rod is arranged in a heating furnace cavity, so that the surface of the heating rod is prevented from reacting with high-temperature hydrogen and water vapor; the heating furnace tube adopts a snake-shaped structure, so that the heat exchange area is increased, the deformation of the high-temperature furnace tube is compensated, and the stability of the whole heating furnace is improved; the heating furnace adopts multi-zone temperature control, and heating elements are uniformly distributed in the furnace, so that the temperature in the heating furnace is uniform, and the precision temperature control of + / -5 DEG C of the hydrogen outlet temperature is realized; the heating furnace cavity is protected by nitrogen, inlet hydrogen supply is cut off in time when hydrogen leaks, a safety linkage nitrogen valve is used for purging, and the overall safety of the heating furnace is improved. Through the design mode of the heating furnace, the durability and the safety of the pure hydrogen electric heating equipment are improved.

The invention relates to the technical field of image recognition, in particular to a hydrogen filling recognition method and system of a hydrogen filling station based on an image recognition technology, and the method comprises the steps: multi-source image synchronous collection: synchronously collecting a visible light image and an infrared thermogram of a hydrogen filling gun connection region; segmentation of a fogging interference area: segmenting the fogging interference area in the visible light image based on the temperature distribution of the infrared thermogram to generate an effective imaging area; hydrogen flow feature extraction and matching region generation: hydrogen flow features are extracted, the hydrogen flow features comprise reflection intensity gradient distribution in the visible light image and a low-temperature diffusion region of the infrared thermogram, and a candidate matching region set is constructed; and spatial coincidence degree judgment and leakage trend identification: monitoring the change of the spatial coincidence degree of the reflection intensity gradient and the low-temperature diffusion region, and generating a hydrogen leakage alarm when the coincidence degree exceeds a preset coincidence degree threshold value and is in a continuous expansion trend. The method introduces a spatial coincidence degree evolution discrimination mechanism, and has the characteristics of high resolution, high sensitivity and quick response.

The invention discloses a flexible load ammonia synthesis system and a flexible load ammonia synthesis process, and solves a plurality of problems confronted by adopting a large operation flexibility strategy to realize flexible load operation in the existing ammonia synthesis system. The system comprises a synthesis gas compressor connected with an ammonia synthesis unit, and further comprises a spherical tank hydrogen storage unit and an organic hydrogen storage unit which are connected with a gas inlet pipeline of the synthesis gas compressor, and the spherical tank hydrogen storage unit comprises a hydrogen spherical tank and a spherical tank hydrogen booster which are sequentially connected; the organic hydrogen storage unit comprises a hydrogenation subunit, a liquid storage unit and a dehydrogenation subunit which are connected in sequence; in the method, the raw material hydrogen is prepared from electrolyzed water, and the load of the absorption unit is adjusted in real time according to the flow Q of the raw material hydrogen. The system provided by the invention is simple, can maintain high-load and high-energy-efficiency flexible operation of the ammonia synthesis tower, is safe and reliable in process, and has the advantages of low energy consumption and quick response.

The invention provides a movable zero-carbon emergency energy device and management method for hydrogen-oriented wind-light-storage cooperation, and the device comprises a reaction system which is used for preparing a hydrogen flow in real time; the auxiliary gas system is used for outputting auxiliary gas flow; the fuel cell system is used for generating electricity through the reaction of the hydrogen flow and the auxiliary gas flow; the power storage system is used for storing electric energy generated by power generation of the fuel cell system; the discharging system is used for outputting the electric energy stored in the electricity storage system at a corresponding output voltage according to a preset requirement; the control system is used for coordinating and controlling the reaction system, the auxiliary gas system, the fuel cell system, the power storage system and the discharge system; and the explosion-proof box is used for loading the system. According to the movable zero-carbon emergency energy device for hydrogen-oriented wind-light-storage cooperation, power can be supplied to the outside by preparing hydrogen in real time and adopting a fuel cell power generation mode, the position of the device can be flexibly adjusted according to the power supply requirement, and the high-reliability, green and low-carbon emergency energy supply requirement is met.