4817results about "Hydrogen production" patented technology

The invention discloses an acylhydrazone bond-linked three-component covalent organic framework material and application thereof in photocatalytic full-decomposition of water. The three-component COFs expands the designability of the structure and function of the porous organic material by generating ordered anisotropic tiling and ordered pores with abnormal shapes. In addition, COFs connected through acylhydrazone bonds have good thermal stability and chemical stability, and nitrogen atoms on the acylhydrazone bonds can provide a large number of sites for load metal. According to the invention, two electron-deficient and electron-rich nodes are introduced into a COFs framework to form a donor-pi-acceptor structure motif, and Pt metal nanoparticles are loaded onto a three-component covalent organic framework material by using a NaBH4 reduction method. The material has great potential in the aspect of producing H2 and H2O2 through photocatalytic full decomposition of water by taking water as a reactant while solar energy is utilized and a sacrificial agent is not added.

The embodiment of the invention relates to a modular integrated photocatalytic hydrogen production system and a photocatalytic hydrogen production method thereof, and belongs to the technical field of new energy photocatalytic hydrogen production. The modularized integrated photocatalytic hydrogen production system comprises an integrated rack, a plurality of photocatalytic hydrogen production reaction devices are arranged in the integrated rack, and the photocatalytic hydrogen production reaction devices are connected with a monitoring control device. The modularized integrated photocatalytic hydrogen production system provided by the embodiment of the invention not only integrates the photocatalytic hydrogen production reactor, efficient utilization of light emitted by the light source and timely recycling of volatile reaction liquid, but also adopts a modularized structure to integrate a plurality of photocatalytic hydrogen production reaction devices, pipelines thereof and a control system; the whole device is simple in structure, convenient to machine, convenient to use and beneficial to equipment management and maintenance, the hydrogen production scale can be conveniently expanded according to needs, and application and popularization of the photocatalytic hydrogen production technology are facilitated.

The invention discloses a soilless culture nutrient solution containing a solid hydrogen supply material and an irrigation method and system. Raw materials of the soilless culture nutrient solution comprise the solid hydrogen supply material, a nutrient solution and a pH regulator. The use amount of the solid hydrogen supply material is 0.05-5 mmol / L; the dosage of the pH regulator is 0.01 to 50 mmol; all the raw materials are mixed, and the soilless culture nutrient solution with the irrigation hydrogen concentration larger than or equal to 500 ppb / L and the pH value of 5-8 is provided. On the basis of applying the soilless culture nutrient solution, the pH value and the hydrogen concentration of the soilless culture nutrient solution are monitored in real time, and the pH value and the hydrogen concentration of the soilless culture nutrient solution are adjusted and controlled by adjusting and controlling at least one of the applying amount of the soilless culture nutrient solution, the applying speed of the soilless culture nutrient solution, the using amount of a solid hydrogen supply material and the using amount of a pH adjusting agent. The hydrogen-rich nutrient solution can be controllably provided for soilless culture plants, stable release of hydrogen and proper adjustment of the pH value and nutritional ingredients are achieved, and the requirements of different crops and different growth stages are met.

An article for joule heating is described, including a three-dimensional substrate on and / or in which a pyrolyzate of a phenolic resin or polymer forms an electrically conductive carbon network. Such articles may be incorporated in structured materials applications, which may include support, sorbent, and or catalyst components. Also described are methods of fabricating such articles and structured materials, and apparatus comprising same, and methods of use of such articles and structured materials and apparatus for conducting material transformation processes requiring input of heat for their performance, such as CO2 adsorption, methane pyrolysis for hydrogen and carbon production, hydrogen-assisted conversion of CO2 to hydrocarbons, including catalytic conversion of CO2 to olefins, catalytic conversion of CO2 to propane (liquefied petroleum gas), and catalytic conversion of CO2 to renewable natural gas, reverse water gas shift reaction, steam ethane cracking, propane cracking, steam methane reforming, and dry methane reforming.

The invention provides an efficient and stable ship hybrid power generation system which comprises a hydrogen production unit and an ammonia supply system, and the hydrogen production unit comprises an ammonia decomposer, a hydrogen separator, a high-pressure hydrogen storage tank, a fuel cell and an ammonia-hydrogen internal combustion engine. The ammonia decomposer enables the ammonia flow to enter the ammonia decomposer in a segmented constant mode for catalytic decomposition through four set working conditions; the hydrogen separator is used for separating and purifying the generated mixed gas, and the separated and purified hydrogen is respectively fed into the fuel cell and the ammonia-hydrogen internal combustion engine through valves for power generation; the molten salt system recycles high-temperature tail gas of the ammonia-hydrogen internal combustion engine through the heat exchanger for heat energy storage and power generation through the steam Rankine cycle system. The regulation and control method is used for stabilizing the system and prolonging the service life of equipment by limiting the dynamic loading rate and start-stop times of the fuel cell and the ammonia-hydrogen internal combustion engine, and is used for waste heat recovery power generation through the molten salt and the steam expansion machine, so that the efficiency of the system is improved.

The invention relates to the technical field of hydrogen preparation, and provides a hydrogen storage device based on a solid hydrogen storage material and a hydrogen production method thereof.The device comprises a fuel tank internally provided with a reaction cavity used for containing an aluminum hydride material and mixed powder; the heater is arranged on the outer side of the fuel tank; the first end of the water recycling assembly is communicated with the reaction cavity, and the second end of the water recycling assembly is communicated with the fuel cell system so as to recycle water generated by the fuel cell system to the reaction cavity; the first end of the hydrogen discharging assembly is communicated with the reaction cavity, and the second end is communicated with a fuel cell system. According to the hydrogen storage device provided by the invention, through the application of the high-specific-energy solid hydrogen storage material aluminum hydride which can be stored at normal pressure and release hydrogen at a relatively low temperature, the thermal decomposition process of the metal hydride in the fuel tank and the coupling reaction process of the metal hydride and water are optimized, and the hydrogen is produced by utilizing the hydrolysis reaction of the aluminum hydride thermal decomposition reactant simple substance aluminum and the water; meanwhile, thermal decomposition of aluminum hydride is promoted through heat released by hydrolysis reaction, hydrogen release is coupled, and effective utilization of heat is achieved.

An electrochemical power system is provided involving a fuel cell comprising an anode capable of oxidizing a species comprising hydrogen, a cathode capable of reducing O2 or H2O, and a molten eutectic salt electrolyte.

The invention discloses a multifunctional ammonia decomposition hydrogen production system and belongs to the technical field of clean energy. The system is composed of an electromagnetic induction cold starting subsystem, a thermocatalytic ammonia decomposition subsystem and a power subsystem. In the cold start stage, the electromagnetic induction cold start subsystem performs non-contact heating on a conductive and ferromagnetic catalyst by utilizing a magnetic induction heating technology, and drives the ammonia decomposition reaction in an extremely short time (about 5 seconds). In a normal use stage, the thermocatalytic decomposition ammonia subsystem utilizes an efficient monolithic catalyst at a lower temperature (llt; 500 DEG C) to promote ammonia decomposition and provide stable and sufficient hydrogen supply for the engine. According to the power subsystem and the method for integrating power generation with the hydrogen fuel cell and engine tail gas waste heat recovery, the energy utilization efficiency is improved, and therefore the problems that an electric heater is low in temperature response speed, low in energy utilization rate, low in ammonia decomposition conversion rate and the like are solved; cooperative work of all parts of the system provides powerful support for development of clean energy automobiles.

The present disclosure is directed to a processing solution composition comprising a metal salt, an acid, a solvent, and a non-metal reductant. The present disclosure is also directed to a method of impregnating a porous material by covering or coating the porous material with a processing solution comprising a metal salt, an acid, a solvent, and a non-metal reductant.

The invention discloses a mobile modular ammonia-hydrogen fuel cell system and a power generation method. The mobile modular ammonia-hydrogen fuel cell system comprises an ammonia storage module, an ammonia filling module, a hydrogen supply module and a fuel cell module, the ammonia storage module is connected with the ammonia filling module, the ammonia filling module is connected with the hydrogen supply module, and the fuel cell module is communicated with the hydrogen supply module; the hydrogen supply module comprises a plurality of reactors and combustors which are separately arranged; the fuel cell module comprises a fuel cell and a lithium battery which are connected in series; wherein two reactors are flue gas heating reactors, and the other reactor is an electric heating reactor; the combustor is connected with the flue gas heating reactor; the two flue gas heating reactors are simultaneously communicated with the electric heating reactor; the lithium battery is communicated with the electric heating sheet, and a purification unit is arranged between the electric heating reactor and the fuel cell. The mobile modular ammonia-hydrogen fuel cell system can realize flexible carrying of equipment and rapid supply of fuel, can realize rapid power supply under emergency conditions, and has the advantages of being green, pollution-free, wide in adaptive condition and the like.

The invention relates to an organic wastewater photocatalytic rotational flow enhanced hydrogen production method and device, and provides an organic wastewater photocatalytic rotational flow enhanced hydrogen production method, which comprises the following steps: (A) shear oscillation mixing of a catalyst and wastewater, (B) wastewater rotational flow oscillation photocatalytic hydrogen production, and (C) gas-liquid-solid three-phase separation and catalyst reuse. The invention further provides an organic wastewater photocatalytic rotational flow enhanced hydrogen production device. Organic matter pollutants in water are decomposed under the action of the catalyst, chemical energy of the organic matter pollutants is recycled in the form of hydrogen, cooperation of wastewater photocatalytic hydrogen production and wastewater treatment is achieved, the reaction rate of wastewater photocatalytic hydrogen production is increased, and secondary pollution caused by the reaction catalyst is avoided.

An ammonia cracking reactor comprising: one or more reaction tubes containing ammonia cracking catalyst; one or more fuel combustion elements for combusting fuel in a fuel combustion zone surrounding the one or more reaction tubes to provide heat energy to support the cracking of ammonia in the one or more reaction tubes; and one or more electrically powered heating elements to provide heat energy to support the cracking of ammonia in the one or more reaction tubes, wherein the one or more fuel combustion elements and the one or more electrically powered heating elements are provided in the same reactor for supporting the cracking of ammonia in the same reaction tubes and together form an electrically assisted fuel burning ammonia cracking reactor.

The invention is applicable to the technical field of porous materials, and relates to multistage ordered macroporous-mesoporous titanium dioxide and a preparation method and application thereof, and the preparation method comprises the following steps: (1) preparing a superstructure photonic crystal solid; (2) forming a light yellow solution with the concentration of 0.2-0.5 mol / L; and (3) adding the superstructure photonic crystal solid in the step (1) into the light yellow solution in the step (2) to prepare the multistage ordered macroporous-mesoporous titanium dioxide. The preparation method has the beneficial effects that in the preparation method of the multistage ordered macroporous-mesoporous titanium dioxide disclosed by the invention, the stability of a mesoporous superstructure unit can be ensured, and accurate and perfect copying of a pore channel structure can be realized; the separation efficiency of photo-generated charges and photo-generated holes of the titanium dioxide disclosed by the invention in photocatalytic water decomposition is greatly improved, and due to the multi-stage ordered macroporous-mesoporous structure, multiple scattering of incident light in a porous frame can be ensured, so that the efficiency of hydrogen production by photocatalytic water decomposition is improved.

The present invention relates, in general, to systems and methods for generating hydrogen from ammonia on-board vehicles, where the produced hydrogen is used as fuel source for an internal combustion engine along with ammonia. The present invention utilizes ammonia not only as a co-fuel for the engine, but also as a heat-exchange medium used by a cooling system for the internal combustion engine, such that the heat is transferred from hot engine coolant to the ammonia, thereby cooling the engine coolant, and also pre-heating the ammonia.

The invention relates to the technical field of sulfur-iodine circulating hydrogen production, in particular to a thermochemical iodine-sulfur-barium circulating hydrogen production process and a thermochemical iodine-sulfur-barium circulating hydrogen production system, which comprises the following steps: reacting excessive Ba < 2 + > with sulfuric acid in a Bunsen reaction product to obtain barium sulfate so as to obtain a first reaction mixed solution containing HI, BaSO4, H2O, BaI2 and a small amount of unreacted I2; sequentially carrying out cyclone separation, liquid removal and filter pressing to obtain a barium sulfate filter cake and a second mixed solution containing HI, H2O and BaI2; the method comprises the following steps: crushing a barium sulfate filter cake, performing high-temperature decomposition, returning gas generated by decomposition to participate in Bunsen reaction, and dissolving BaO generated by decomposition into Ba < 2 + >; and reboiling the second mixed solution to obtain hydrogen iodide steam, cooling a product obtained by decomposing the hydrogen iodide steam, carrying out gas-liquid separation to obtain hydrogen, and returning liquid obtained by gas-liquid separation to participate in the Bunsen reaction of the next cycle. Barium circulation is introduced, the process is simplified, the dosage of elemental iodine is reduced, and the cost is low.

Provided is a water electrolysis system that alters power consumption by sensing a system frequency to rapidly change power consumption, wherein a suitable adjustment margin that can be accommodated instantaneously by an electrolytic cell is calculated so as to suppress deterioration or failure of the electrolytic cell. This water electrolysis system is configured by including: a rectifier that converts alternating-current power of a power system to direct-current power; an electrolysis tank that performs water electrolysis using the direct-current power from the rectifier; a gas–liquid separator that performs gas–liquid separation of oxygen and hydrogen from a fluid that is a mixture of oxygen and water from the electrolytic cell; and a cooling system that supplies water to the electrolytic cell. The water electrolysis system is characterized in that: the rectifier is controlled so as to adjust power consumption in accordance with the frequency of the power system; the power consumption is adjusted so that the power consumption in the electrolytic cell is within a limited range for power consumption; and the limited range for power consumption is determined on the basis of the temperature and deterioration rate of the electrolytic cell, the pressure of water at an exit of the electrolytic cell, and the flow rate of the supplied water.

To provide a hydrogen production system that can perform aqueous reaction to superheated steam by utilizing high-temperature gas exhausted from a carbonization furnace.SOLUTION: A hydrogen production system 1 that hydrolyzes biomass into pellets by using a continuous-type subcritical water comprises: a carbonization furnace 3 which incompletely burns and carbonizes pellets; a carbonization rate measuring device 31 which measures a ratio of carbide; a superheated steam generator 4 which generates superheated steam; a thermal decomposition furnace 5 which generates thermally decomposed gas; a water gas recovery device 6; and a control device 90, where the carbonization furnace 3 has: an input port 301a into which pellets are input; a housing part 301 which houses the input carbide; an exhaust port 301b which exhausts carbide created by carbonizing pellets; and a carbonization degree evaluation part 313 which evaluates a carbonization degree of the created carbide, where a control device 90 controls an atmospheric temperature inside the housing part 301 such that a ratio of the carbide measured by the carbonization rate measuring device 31 and a carbonization degree evaluated by the carbonization degree evaluation part 313 become constant.SELECTED DRAWING: Figure 1

The invention discloses a doped material based on a hexagonal boron nitride / titanium dioxide heterojunction and a preparation method thereof. According to the material, a heterojunction is formed by hexagonal boron nitride and titanium dioxide, and the light absorption performance, the carrier mobility and the photocatalytic efficiency are optimized by doping a nitrogen element, an iron element and a fluorine element; wherein the doped nitrogen element can reduce a band gap by introducing a defect energy level, and broaden a light absorption range to a visible light region and an infrared light region; the doped iron element can promote carrier separation by introducing an intermediate energy level; the doped fluorine element can inhibit carrier recombination by reducing surface defects. The light absorption efficiency of the material in the ultraviolet light range can be improved by constructing the layered # imgabs0 # heterojunction composite material, and the migration rate of electrons and holes can be improved by doping the N element, the Fe element and the F element in the # imgabs1 #, so that the oxidation-reduction reaction is promoted, and reference significance is provided for further improving the application effect of a photocatalyst in sewage treatment.

The invention discloses a novel photocatalyst for producing hydrogen from organic matter wastewater and a preparation method of the novel photocatalyst, and relates to the technical field of photocatalysis. The photocatalyst disclosed by the invention is combined with oxidation-reduction capability, and can effectively degrade and produce hydrogen under the irradiation of sunlight. Through combination of quaternized porous tungsten oxide and vanadate radicals, silver vanadate load growth is promoted, the sunlight utilization rate is increased, and the electron-hole recombination rate is reduced. Reduced graphene oxide is used for pretreatment, active groups are introduced, the reduced graphene oxide is compounded with tungsten oxide / silver vanadate, the binding force is enhanced through heat treatment, photo-induced electron-hole pair compounding is inhibited through the conductivity, and the visible light catalytic performance is improved. The adsorption effect of porous tungsten trioxide and reduced graphene oxide can accelerate the degradation of organic matters. By optimizing the proportion of silver vanadate, tungsten oxide and reduced graphene oxide, the visible light response and charge separation efficiency are enhanced, the degradation and hydrogen production performance is improved, and light corrosion is reduced.

An article for joule heating is described, including a three-dimensional substrate on and / or in which a pyrolyzate of a phenolic resin or polymer forms an electrically conductive carbon network. Such articles may be incorporated in structured materials applications, which may include support, sorbent, and or catalyst components. Also described are methods of fabricating such articles and structured materials, and apparatus comprising same, and methods of use of such articles and structured materials and apparatus for conducting material transformation processes requiring input of heat for their performance, such as CO2 adsorption, methane pyrolysis for hydrogen and carbon production, hydrogen-assisted conversion of CO2 to hydrocarbons, including catalytic conversion of CO2 to olefins, catalytic conversion of CO2 to propane (liquefied petroleum gas), and catalytic conversion of CO2 to renewable natural gas, reverse water gas shift reaction, steam ethane cracking, propane cracking, steam methane reforming, and dry methane reforming.

The present invention relates, in general, to systems and methods for generating hydrogen from ammonia on-board vehicles, where the produced hydrogen is used as fuel source for an internal combustion engine. The present invention utilizes an electric catalyst unit operating in series with a plate-type heat exchange catalyst unit. The electric catalyst unit is used to initiate an ammonia cracking process on-board during a cold start or low load operating condition of the internal combustion engine, where the ammonia cracking process occurs in the heat exchange catalyst unit once exhaust gas from the internal combustion engine has been heated to a threshold temperature suitable to perform the ammonia cracking process.

The invention discloses a rare earth oxide post-supported ruthenium-based ammonia decomposition catalyst, a preparation method and application thereof in hydrogen preparation through ammonia decomposition, and belongs to the technical field of hydrogen production. The ammonia decomposition catalyst takes an oxide or a carbon material as a carrier, firstly, ruthenium metal is loaded to form an active center, then, rare earth oxide is introduced in a post-loading mode, the structure and electronic characteristics of a metal-carrier interface are regulated and controlled, and finally, the ammonia decomposition catalyst with high dispersity and stability is obtained through reduction treatment. The low-temperature ammonia decomposition performance and the operation stability are obviously improved. Under the conditions that the temperature is 400 DEG C and the air speed of ammonia gas is 18000 mL.gcat <-1 >. H <-1 >, the ammonia conversion rate of the catalyst is close to the thermodynamic limit, and the catalyst has good anti-sintering and anti-poisoning capabilities. The catalyst is simple and convenient in preparation process, can be produced on a large scale, is suitable for various scenes of hydrogen production through ammonia decomposition, is particularly suitable for distributed and on-demand hydrogen production systems, and provides powerful technical support for efficient utilization and green conversion of hydrogen energy.

The invention discloses an electricity ammonia heat multi-energy conversion system adapting to offshore wind power fluctuation and a control method of the electricity ammonia heat multi-energy conversion system. The electric ammonia heat multi-energy conversion system comprises a green hydrogen preparation system, a green ammonia synthesis system, a green ammonia power generation system and a green ammonia heat supply system, the electric ammonia heat multi-energy conversion system is controlled by adopting the wind power absorption module and the power generation heat supply module. According to the invention, offshore wind power is utilized to prepare green hydrogen and synthesize green ammonia, offshore new energy consumption and medium-and-long-term storage of electric power are realized, low-cost long-distance flexible transportation of energy is realized through a liquid ammonia mode, the problem of storage and transportation of hydrogen energy is solved, and the construction investment of offshore transmission channels is reduced; energy supply diversification can be achieved through green ammonia power generation and green ammonia heat supply; meanwhile, through the unique control method, the method can effectively adapt to the strong volatility of offshore wind power, and economical and efficient preparation and diversified utilization of the green ammonia are achieved.

The invention provides novel liquid-liquid phase separation microparticles (LLPS MPs) as well as a preparation method and application thereof. The liquid-liquid separation (LLPS) system is micron liquid drops formed by driving under the electrostatic attraction effect of positively charged polyelectrolyte and negatively charged inorganic salt or organic salt in an aqueous solution. Polyoxometallate (POM) is used to stabilize it by electrostatic attraction and precipitate LLPS MPs having a ridge structure. According to the preparation method, [{(B-alpha-PW9O34) Co3 (OH) (H2O) 2 (O3PC (O) (C3H6NH3) PO3)} 2Co] 14-(Co7-POM) with photocatalytic water oxidation activity is selected to deposit micron particles, so that the micron particles have enhanced photocatalytic water oxidation activity, and meanwhile, the micron particles can be recycled through simple and feasible solid-liquid separation.

The invention belongs to the technical field of hydrogen production, and particularly relates to an electric heating catalyst and an electric heating catalytic ammonia decomposition hydrogen production system. The electrothermal catalyst comprises a catalyst component and a foam alloy electrode, wherein the catalyst component comprises an active metal, a carrier metal oxide and an auxiliary metal oxide; the interior of the foam alloy electrode is of a porous network structure, the catalyst components are uniformly distributed on the outer surface of the foam alloy electrode and the inner wall of the porous network structure, and the thickness of the catalyst components distributed on the outer surface of the foam alloy electrode and the thickness of the inner wall of the porous network structure are both 5-10 microns. The foam alloy electrode is used as a heating unit and a carrier for catalyst growth, catalyst forming is not needed, good heat transfer and mass transfer efficiency is achieved, meanwhile, the electro-thermal catalytic bed design of multiple sections of bed layers is combined, temperature subsection control of the multiple sections of bed layers is achieved, the optimal reaction conditions can be kept at different reaction stages, and the reaction efficiency is improved. Therefore, the reaction efficiency is obviously improved.

The invention discloses a system and a method for rapidly and efficiently decomposing ammonia to produce hydrogen through cooperation of plasma catalysis. Ammonia gas enters the normal-pressure arc temperature plasma reactor to form rotating gas flow, is ionized into high-activity plasma under the driving of high-voltage electricity, and is pushed by the rotating gas flow and a gradually-shrinking opening of the reactor to form large-area three-dimensional plasma jet flow, and jet flow gas upwards flows into a coaxial upper-layer catalytic area and downwards flows into a coaxial outer-layer catalytic area due to the limitation of a wall surface; and the reacted gas flows out from a gas guide hole at the lower part. Ammonia gas is firstly activated and pre-decomposed in the arc temperature plasma area and then secondarily decomposed in the coaxial catalytic area, heat of the temperature plasma area directly acts on the catalytic area, and external heating is not needed. The whole structure is that the temperature plasma area and the catalytic area are coaxially integrated, so that the waste heat utilization rate and the reaction energy efficiency are improved. The system is simple and compact in structure, can flexibly supply hydrogen in a distributed manner, is high in energy density, and can be directly driven by wind, light and green electricity.

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 utility model discloses an agricultural irrigation device which comprises a water tank, a water inlet pipe connected to the right end of the water tank, an irrigation pipe connected to the left end of the water tank, a through hole formed in the upper end of the water tank, a nut fixed to the upper end of the water tank and located on the outer side of the through hole, a rain cover arranged at the upper end of the water tank and located on the outer side of the nut, and a sleeve fixed to the upper end of the rain cover and integrated with the rain cover. A hand wheel is fixed to the upper end of the sleeve, a connecting column is installed in the sleeve, and the lower portion of the connecting column is in threaded connection with a nut. According to the agricultural irrigation device, after a hydrogen rod is installed on the lower portion of a connecting column, the hydrogen rod can penetrate through a nut and a penetrating hole, the hydrogen rod is moved into a water tank, then the lower portion of the connecting column is screwed into the nut, a rainproof cover moves downwards to cover the nut at the moment, and rainwater and soil can be prevented from entering the position between the nut and the connecting column through the rainproof cover; in addition, an observation window is arranged, the surface state of the hydrogen rod can be observed, and therefore a user can conveniently replace the hydrogen rod in time.

[Problem] The objective is to provide a hydrogen production device that achieves easy adjustment of the magnitude of a generation rate of hydrogen and a stable hydrogen generation rate. [Solution] The present invention is provided with: n reactors numbering three or more; an aluminum supply means for supplying aluminum material to each of the reactors; and a reaction liquid supply means for supplying an alkaline reaction liquid to each of the reactors, each of the reactors having an individual rate detecting means that detects a generation rate of hydrogen and a total rate detecting means that operates i reactors of the n reactors and detects a total hydrogen generation rate thereof, and the present invention is characterized by comprising a total rate control means that controls the total hydrogen generation rate of the i reactors so as to be within a predetermined range.

The invention, which relates to the technical field of energy management and control, discloses an energy management and control system for wind-solar complementary hydrogen production, comprising an information acquisition module, a demand analysis module, a wind-solar power generation monitoring module, a complementary energy supply module, a stability index analysis module and an influence module. The system has the advantages that the demand analysis module can accurately calculate and distribute the required basic energy based on the starting demand of the hydrogen production equipment, and the wind and light power generation monitoring module can rapidly and preliminarily analyze the energy supply proportion adjustment time according to a preset mechanism, and can timely adjust the time when needed, so that the energy supply efficiency is improved. By means of the complementary energy supply module, wind energy and light energy can work cooperatively, stable electric power is provided for hydrogen production equipment at the optimal proportion according to the actual power generation capacity and the energy storage level of the wind energy and the light energy, the advantage of wind and light complementation is brought into full play, and when any one of wind energy supply equipment and light energy supply equipment goes wrong, the energy supply efficiency is improved. And the hydrogen production equipment can still keep the most basic operation.