937results about "Fixed capacity gas holders" patented technology

Described are storage and dispensing systems and related methods, for the storage and selective dispensing germane a reagent gas from a vessel in which the reagent gas is held in sorptive relationship to a solid adsorbent medium at an interior of a storage vessel and wherein the methods and dispensing systems provide dispensing of the reagent gas from the storage vessel with a reduced level of atmospheric impurities contained in the dispensed reagent gas.

The invention provides a solid hydrogen storage thermal management system and method, and relates to the technical field of thermal management, and the system comprises a solid hydrogen storage module, a heating liquid storage module, a heat exchanger and a cooling module. The solid hydrogen storage module is composed of a plurality of solid hydrogen storage units connected in parallel, a first control valve and a second control valve. The heating liquid storage module comprises a liquid storage tank and a heater and is communicated with each solid hydrogen storage unit; and the cooling module comprises a water chilling unit and is used for cooling the medium flowing out of the liquid storage tank during hydrogen filling. And in the hydrogen charging and discharging operation, a control valve of the target solid hydrogen storage unit is opened, so that the target solid hydrogen storage unit, the heating liquid storage module and the heat exchanger form a communication loop. The heater heats the heat exchange medium to a first temperature range required by hydrogen desorption, and the water chilling unit cools the heat exchange medium to a second temperature range during hydrogen charging. The temperature of the solid hydrogen storage system can be effectively controlled in the hydrogen charging and discharging process.

The invention relates to a hydrogen storage pellet enabling the production of compact, modular, safe and energy-efficient hydrogen reservoirs. The pellet according to the invention comprises a peripheral ring (4) having an outer diameter of expanded natural graphite (ENG) of a determined height, surrounding a wafer of a metal hydride (5) in the form of compacted powder.

The invention discloses a multi-hydrogen-storage-tank solid hydrogen storage system based on temperature control, and relates to the technical field of hydrogen energy storage, and the key points of the technical scheme are that the system comprises a plurality of hydrogen storage tanks, each hydrogen storage tank adopts different types of alloy hydrogen storage materials, each hydrogen storage tank is provided with an independent temperature control system, and the temperature is adjusted according to the types of the hydrogen storage materials; therefore, the hydrogen storage efficiency is optimized. The system can accelerate the hydrogen storage rate and improve the storage density through temperature control, the heat exchange device is arranged to improve the heat energy management efficiency, and accurate temperature control and cycle counting functions are achieved. The service life of the hydrogen storage material can be effectively prolonged, performance degradation is reduced, and the long-term stability of a hydrogen storage system is improved.

The invention provides a composition, an adsorption and storage device containing the composition and an associated gas recovery system. The composition comprises a hierarchical porous MOFs-based composite phase change material and an adsorption material, and the adsorption storage device is an adsorption storage tank with the composition as bed filling. The associated gas recovery system mainly comprises a pressurizing unit, a cooling, condensing and dehumidifying unit and an adsorption and storage unit, wherein the adsorption and storage unit is the adsorption and storage device. The associated gas recovery system can realize a medium pressure-low temperature-phase change temperature control-adsorption storage single pull well associated gas recovery process, and realizes efficient recovery of single pull well associated gas with small gas volume, low casing pressure and far distance from a gathering and transportation station at low cost at low pressure (specifically 2-4MPa).

The invention relates to a preparation method of a flexible solid hydrogen storage bed body, which comprises the following steps: S1, mixing 74-90% by mass of hydrogen storage alloy powder and 3-16% by mass of carbon-based heat conduction material for 20-50 minutes in a mechanical stirring manner to obtain a dry powder mixture; s2, adding an organic silicon material with the mass fraction of 5-16%, and continuously mechanically stirring for 1-5 hours to obtain a non-dry powder mixture; and S3, carrying out vacuum drying on the non-dry powder mixture in the S2 at 60-100 DEG C for 8-20 hours, and naturally cooling to room temperature to obtain the required novel non-dry powdery hydrogen storage bed body. Through the synergistic effect of the hydrogen storage alloy, the expanded graphite and the double-liquid silica gel, the flexible solid hydrogen storage material is formed on the basis of optimizing the material ratio and the process sequence. The synergistic effect of the materials breaks through the defect that a traditional hydrogen storage bed body is too high in rigidity or in a loose powder state, and finally the hydrogen storage bed body has high hydrogen storage efficiency, stable cycle life and excellent safety performance.

The utility model discloses a magnesium-based solid hydrogen storage device which comprises a tank body, an upper cover, a hydrogen pipe and a heat-conducting oil pipe, the tank body is of an upward opening structure and comprises an outer tank and an inner tank, an oil guide inlet is formed in the top of the outer tank, an oil guide outlet is formed in the bottom of the outer tank, an oil guide channel is formed between the outer tank and the inner tank, and a magnesium-based solid hydrogen storage material is filled in the inner tank; the upper cover covers the tank body; the hydrogen pipe penetrates through the upper cover and is communicated with the inner tank, and a plurality of air holes are formed in the hydrogen pipe; the heat conduction oil pipe penetrates through the upper cover and extends into the inner tank. An oil guide channel and a heat-conducting oil pipe are arranged, heat-conducting oil is continuously added in the hydrogen absorption and desorption process, the internal temperature of the tank body is regulated and controlled, the magnesium-based hydrogen storage material is in a high-temperature environment through internal and external combination, the temperature of the inner tank is kept stable, and the hydrogen absorption and desorption reaction rate is increased; and a plurality of air holes are formed in the surface of the hydrogen pipe, so that hydrogen fully reacts with the magnesium-based hydrogen storage material in each area of the inner tank body, and the hydrogen storage performance is enhanced.

The invention belongs to the technical field of hydrogen storage equipment, and relates to a solid hydrogen storage tank and a manufacturing method thereof, the solid hydrogen storage tank comprises a tank body and a core heat exchanger arranged in the tank body; the core heat exchanger is arranged in the tank body and consists of a plurality of H-shaped expanded surface finned tubes, each H-shaped expanded surface finned tube comprises a heat exchange tube and a plurality of radiating fins arranged on the heat exchange tube, gaps among the fins are used as spaces for placing hydrogen storage materials, and the fins are arranged in sequence; a plurality of screen H-shaped expansion surface finned tubes are stacked up and down and fixed by tube clamps, and a plurality of screens are connected into a whole and fixed on a bracket at the upper part of the tank body. According to the core heat exchanger, the H-shaped expanded surface finned tube is adopted as a basic unit of the core heat exchanger, and the heat and mass transfer efficiency between a hydrogen storage material and a heat exchange medium is effectively improved by increasing the number and the area of the radiating fins. And meanwhile, the sequential arrangement mode is adopted, so that the core heat exchanger is filled with the hydrogen storage material more uniformly, and the hydrogen storage density and the hydrogen charging and discharging rate are further improved.

The invention belongs to the technical field of solid hydrogen storage, and provides a solid alloy hydrogen storage device with high heat transfer performance and application thereof, and is characterized in that the device comprises a hydrogen storage container, a hydrogen storage alloy and a heat exchange structure assembly; a fin structure and a layering partition plate are arranged in the hydrogen storage container, by optimizing the layering partition plate and the fin structure, displacement and agglomeration of hydrogen storage alloy in a moving or vibrating environment are effectively prevented, the mass transfer and heat transfer performance in the hydrogen storage tank is remarkably improved, hydrogen and heat can be rapidly transferred to the hydrogen storage alloy, and the hydrogen storage effect is improved. Therefore, the hydrogen absorption and desorption efficiency is improved. The method is suitable for AB2 type alloys, AB5 type alloys, BCC type alloys, superlattice hydrogen storage alloys and the like, the hydrogen absorption and desorption process can be efficiently completed at a certain temperature and pressure, and the high efficiency and stability of the hydrogen absorption and desorption process are ensured. And the catalyst can be widely applied to various scenes such as traffic, hydrogen refueling stations, industrial processes and hydrogen energy storage.

The invention belongs to the field of hydrogen storage materials, and particularly relates to a preparation method of a bamboo charcoal hydrogen storage material, which comprises the following steps: carbonizing a bamboo raw material to obtain a carbonized material, mixing the carbonized material with a modifier, and activating to obtain an activated material; and washing and drying the activated material to obtain the bamboo charcoal hydrogen storage material. Wherein at least one of a bamboo raw material before carbonization, a carbonized material before activation, an activated material after activation and a washing material after washing is subjected to liquid-phase microwave pretreatment in advance before the next operation; the modifier comprises an alkaline component. The invention also comprises the material prepared by the preparation method and application of the material in a hydrogen storage material. Bamboo raw materials which are difficult to treat are successfully utilized for the first time in the industry to prepare the material with good hydrogen storage activity.

A distributed hydrogenation device relates to the field of hydrogen energy application and comprises a water heater, a water cooler, a solid hydrogen storage system, a hydrogen booster pump, a cooler and a hydrogenation gun, the solid hydrogen storage system comprises a heat exchanger, a combined placement rack and a plurality of solid hydrogen storage modules, the water heater and the water cooler are connected with the heat exchanger, and the hydrogen booster pump is connected with the combined placement rack. A plurality of solid hydrogen storage modules are placed on the combined placing frame, metal hydrogen storage alloy is arranged in each solid hydrogen storage module and used for storing hydrogen, the solid hydrogen storage system is sequentially connected with the hydrogen booster pump, the cooler and the hydrogenation gun, and a buffer tank is arranged between the hydrogen booster pump and the hydrogenation gun. The temperature of the heat exchanger is regulated and controlled, so that the solid hydrogen storage system supplies hydrogen to the hydrogen booster pump at the required pressure, the hydrogen booster pump supplies hydrogen to the terminal vehicle-mounted hydrogen storage device through the hydrogenation gun after boosting to the required pressure, and the external hydrogen supply equipment supplements hydrogen to the solid hydrogen storage system regularly for the next cycle.

The invention provides a hydrogen charging management method of a solid hydrogen storage device, and relates to the technical field of hydrogen storage, the method comprises the following steps: connecting a hydrogenation gun into a first gas inlet end of the solid hydrogen storage device, and charging hydrogen with a preset hydrogen flow into the solid hydrogen storage device; controlling the exhaust end of the solid hydrogen storage device to exhaust the hydrogen subjected to heat exchange; a circulating pump is started, hydrogen exhausted from the exhaust end is input into a cooling device through a circulating pipeline to be cooled, and the cooled hydrogen is filled into the solid hydrogen storage device through a second gas inlet end of the solid hydrogen storage device through the circulating pipeline; and when the solid hydrogen storage material in the solid hydrogen storage device reaches a hydrogen absorption saturation state, hydrogen charging is stopped. The solid hydrogen storage device can be filled with hydrogen of the preset hydrogen flow, heat generated by hydrogen absorption of the solid hydrogen storage material in the solid hydrogen storage device is brought out of the solid hydrogen storage device, the solid hydrogen storage device discharges a small amount of hydrogen after hydrogenation is completed, and safety is high.

The invention discloses a hydrogen desorption control method for solid-state hydrogen storage and supply. The method comprises the steps that the current pressure and the current temperature of a solid-state hydrogen storage and supply system are obtained; determining a hydrogen desorption temperature corresponding to the current hydrogen content value and the hydrogen desorption balance pressure, and calculating to obtain an adjusting temperature according to the hydrogen desorption temperature and the current temperature; and adjusting the temperature of the solid hydrogen storage and supply system to the adjusting temperature. The invention further discloses a solid-state hydrogen storage and supply system using the method, the system comprises at least one hydrogen storage bottle, a temperature adjusting device, a temperature detection device, a pipeline, a pressure detection device, a switch component and a control device, and the control device is configured to receive the current temperature and the current pressure, determine the hydrogen desorption temperature, calculate the adjusting temperature and control the hydrogen desorption temperature according to the adjusting temperature. The switch is used for controlling the temperature adjusting device to adjust the temperature and controlling the switch component.

Provided is a hydrogen storage material that has a TiFe-based alloy that exhibits an excellent durability, an excellent initial activation, and also a satisfactory hydrogen storage amount and satisfactory hydrogen storage / release characteristics. Also provided are: a hydrogen storage container provided with the hydrogen storage material; and a hydrogen supply device provided with the hydrogen storage container. The hydrogen storage material has an alloy with the prescribed element composition given by formula (1), wherein, in a 1000X COMP image of this alloy provided by EPMA of its cross section, an La-concentrated phase having a phase diameter of 0.1 μm to 10 μm is present at 10 to 3000 times in an 85 μm × 120 μm field of view in the COMP image. The hydrogen storage container is provided with this hydrogen storage material, and the hydrogen supply device is provided with this hydrogen storage container. (1): Ti(1-a-b)LaaM1bFecMndM2eCf

The invention relates to the technical field of hydrogenation, and discloses a hydrogenation system and method suitable for small solid hydrogen storage, and the hydrogenation system comprises an emergency cut-off system, a scram button, an emergency switch-off system and a control system, the emergency cut-off valve is electrically connected with the emergency stop button and the PLC control system and is used for cutting off a hydrogen passage when an abnormality occurs; and the PLC control system is electrically connected with the emergency cut-off system, is electrically connected with the hydrogen leakage and flame detection system and the process equipment system, and is used for receiving signals and controlling the operation of each module. According to the invention, hydrogenation is carried out on a large batch of small solid hydrogen storage tanks in the form of a hydrogenation tank changing machine. The machine is connected with the solid hydrogen storage tank in a quick-plug connector mode, when hydrogenation is needed, the empty tank only needs to be inserted into equipment, plug-and-play is achieved, and the empty tank is pulled out after being filled up. The problem of filling efficiency of a large batch of solid hydrogen storage tanks can be solved, the service efficiency of a hydrogen refueling station is improved, the requirements for the working conditions and the number of operators are not high, human intervention is little, and the automation degree is higher.

The invention belongs to the technical field of hydrogen storage equipment, and discloses vertical dividing wall type solid hydrogen storage equipment which comprises a high-temperature steam conveying pipe, one end of the high-temperature steam conveying pipe is connected with a plurality of steam auxiliary pipes, and the other end of each steam auxiliary pipe is connected with a solid hydrogen storage tank through a steam pipe connector. The top of each solid hydrogen storage tank is connected to a hydrogen pipe through a hydrogen charging and discharging port, a steam layer is further arranged at the top of each solid hydrogen storage tank, and a steam output pipe is connected to the bottom of each steam layer. High-temperature steam generated by a power plant is mainly used for heating the solid hydrogen storage tank; the solid hydrogen storage material is preferably magnesium-based solid hydrogen storage alloy, the interior of the solid hydrogen storage tank has an efficient heat transfer effect, the adopted spiral fins and the solid hydrogen storage tank are well fixed, and the spiral fins are beneficial to the heat transfer and mass transfer process of the solid hydrogen storage material; and the inner pipe, the sprue spreader and the dividing wall layer are matched to heat the liner internally and externally at the same time, so that the hydrogen absorption and desorption efficiency of the solid hydrogen storage tank is improved.

The invention relates to the technical field of hydrogen storage, and discloses a metal hydride hydrogen storage system and a hydrogen absorption and desorption method. The metal hydride hydrogen storage system comprises n hydrogen storage units which are connected in series, and n is 3-20 and is a positive integer; the adjacent hydrogen storage units are connected through a detachable connecting unit, an open hole is formed in the detachable connecting unit, and the open hole is used for circulation of hydrogen; the hydrogen storage unit comprises a tank body, the tank body is filled with a hydrogen storage bed layer, and the hydrogen storage bed layer is used for hydrogen absorption / hydrogen desorption and heat conduction. According to the hydrogen storage system, the hydrogen storage volume can be flexibly controlled, hydrogen storage material filling is simpler, the heat transfer efficiency can be improved, and the hydrogen absorption and desorption rate can be better controlled.

1.1 Storage system for the storage and transport of hydrogen, based on hollow microspheres in whose closed shells metal particles are embedded, which can be heated inductively. 2.1. Various hydrogen storage and transport systems exist, which either have limited storage capacities or require significant energy input, and are therefore generally not economically viable for a broad hydrogen economy. The new system aims to provide large storage capacities with the lowest possible energy consumption. 2.2. The storage system is characterized by the fact that metal, metal alloy, or metal composite particles are embedded in the closed shells of hollow microspheres, which can be inductively heated, thus allowing rapid hydrogen permeation into and out of the hollow spheres even at low temperatures during the loading and unloading process. 2.3. Hydrogen storage and transport system.

The utility model relates to a special vehicle for hydrogen storage, hydrogen transportation and dehydrogenation. The special vehicle mainly comprises a container and a transportation vehicle, wherein the container is provided with hydrogen storage, hydrogen transportation and dehydrogenation equipment; the equipment for storing, transporting and dehydrogenating the hydrogen is arranged in a container to form the container provided with the equipment for storing, transporting and dehydrogenating the hydrogen; the container is fixed on the chassis of the transport vehicle to form a whole body, so that the special vehicle for storing, transporting and dehydrogenating hydrogen is formed; the special vehicle disclosed by the utility model can be used for implementing a coordinated service of hydrogen storage, hydrogen transportation, dehydrogenation and hydrogen supply, has the advantages that the hydrogen storage capacity of a transportation vehicle is high, hydrogen transportation and dehydrogenation are carried out at normal pressure, hydrogen transportation at normal pressure is safe and reliable, potential safety hazards possibly occurring in transportation of hydrogen stored in a high-pressure bottle are overcome, and the special vehicle has good industrial practicability.

The utility model relates to a gas hydrate stable preservation device and system, and the device comprises an upper housing which is provided with a first cylinder body and a top cover, and the bottom of the first cylinder body is open and is provided with a switch valve; the piston reciprocates in the first barrel, a first pressure cavity is defined between one side of the piston and the first barrel, a second pressure cavity is defined between the other side of the piston and the first barrel, the second pressure cavity contains pressurized liquid, a first channel and a second channel are formed in the piston, and a spraying head is arranged at the bottom of the second channel; the lower shell is provided with a second barrel and a bottom plate located on the second barrel, the top of the second barrel is open and detachably connected with the switch valve, pressurized liquid is injected into the second pressure cavity to drive the piston to move towards the extending position, and the gas hydrate in the first pressure cavity is compressed and formed under pressurization of the piston to obtain the solid gas hydrate. And then the switching valve is opened, and the solid gas hydrate is transferred to the lower shell for low-pressure storage.

The utility model discloses an inerting and discharging combined safety protection device for a solid hydrogen storage tank, and belongs to the technical field of hydrogen storage and supply. The device comprises a solid hydrogen storage tank main body, a pressure and temperature sensing module, an inert gas injection system, a flameless relief device and a hydrogen treatment unit, the pressure and temperature sensing module monitors parameters in the tank in real time, when the parameters exceed a preset threshold value, the inert gas injection system injects inert gas from the lower portion of the tank body at constant pressure, the air pressure is stabilized through flow control, and meanwhile hydrogen is pumped out of an opening in the upper portion of the tank body to the processing unit; and a discharge port is formed in the side surface of the tank body and is linked with the flameless discharge device. According to the device, through the design of inerting inhibition and safe release, the potential safety hazard of overtemperature and overpressure in the solid hydrogen storage process is solved, the stability and safety of a hydrogen storage system are improved, and the device is convenient to operate and adapts to transformation of an existing solid hydrogen storage tank.

The invention discloses a method for capturing, storing and transporting carbon dioxide. According to the method, guanidine sulfate powder is used for selectively absorbing carbon dioxide or pure carbon dioxide in a gas mixture. When carbon dioxide is in contact with guanidine sulfate under a certain pressure, carbon dioxide reacts with guanidine sulfate to form a carbon dioxide-guanidine sulfate inclusion compound. According to the method, efficient and low-energy-consumption capture of carbon dioxide is achieved through guanidine sulfate powder, the obtained carbon dioxide and guanidine sulfate clathrate compound can achieve storage and transportation of carbon dioxide at normal temperature and normal pressure, the purity of carbon dioxide obtained through separation of the method is extremely high, and the purity of carbon dioxide can reach 100% theoretically.

The invention provides a solid hydrogen storage thermal management system and method, and relates to the technical field of thermal management, the system comprises a hydrogen charging and discharging module, a heating liquid storage module, a cooling liquid storage module, a loop switching module, a heat exchanger and a cooling module, the hydrogen charging and discharging module comprises a hydrogen storage unit, and the hydrogen storage unit is connected to a first control valve and a second control valve. The heating liquid storage module is composed of a heat liquid storage box and a heater and connected with the control valve. And the cooling liquid storage module comprises a cold liquid storage tank which is communicated with the control valve. The loop switching module utilizes the first control valve and the second control valve to switch heat exchange medium flow paths. The cooling module comprises a cooling unit. During hydrogen filling, the control valve is configured to form a first communication loop, and the heat exchange medium is cooled to the hydrogen filling temperature; and during hydrogen desorption, a second communication loop is formed, and the heat exchange medium is heated to the hydrogen desorption temperature. The temperature of the solid hydrogen storage system can be effectively controlled in the hydrogen charging and discharging process.

The invention relates to the technical field of hydrogen energy solid hydrogen storage, and discloses a metal hydride hydrogen storage tank and a circulating hydrogen charging and discharging method.The metal hydride hydrogen storage tank comprises a tank body, the top end of the tank body is communicated with a gas inlet pipe, and the bottom end of the gas inlet pipe extends into the tank body and is rotationally provided with a connecting pipe through a rotating connector; a plurality of circular heat dissipation fins are fixedly connected between the inner walls of the tank body, the bottom end of the connecting pipe penetrates through the heat dissipation fins to be rotationally connected with the bottom end of the tank body, and a plurality of air holes are formed in the surface of each heat dissipation fin; four telescopic rods are fixedly connected to the top wall of the interior of the tank body, the hydrogen storage tank drives the transmission assembly to drive the connecting pipe and the stirring plate to rotate through movement of the piston, metal hydride is prevented from caking, hydrogen is dispersed more evenly through inclined air outlet holes, and the hydrogen storage efficiency is improved; the circular heat dissipation fins are provided with air holes, so that heat dissipation is achieved, and circulation of hydrogen is not blocked.

The invention aims to provide a solid hydrogen storage hydrogen closed cycle hydrogen source generator for an underwater vehicle, which belongs to the field of dehydrogenation devices and comprises a reactor, a pressure stabilizing common rail pipe, a hydrogen storage material delivery pump, a solid hydrogen storage material storage unit, a solid hydrogen storage material spraying device, a product collecting device and a hydrogen storage unit. The hydrogen storage material conveying pump is connected with the pressure stabilizing common rail pipe, the solid hydrogen storage material storage unit and the solid hydrogen storage material spraying device, the hydrogen storage unit is connected with the pressure stabilizing common rail pipe, and the reactor is connected with the hydrogen storage unit. The solid hydrogen storage material is used for releasing hydrogen, one part of hydrogen is conveyed to the fuel cell to react for power output of the underwater vehicle, the other part of circulating hydrogen assists the hydrogen storage material in injection, and an underwater closed circulation mode suitable for the underwater vehicle is achieved. The solid hydrogen storage material conveying module and the circulating hydrogen supply module are matched, and rapid mixing of the solid hydrogen storage material and hydrogen and large-flow injection of the solid hydrogen storage material are achieved.

The invention belongs to the technical field of hydrogen energy, and particularly relates to a solid hydrogen storage system with two charging and discharging ends and a working method.The solid hydrogen storage system comprises at least two independent solid hydrogen storage units, and each solid hydrogen storage unit independently communicates with an upstream hydrogen supply pipeline through a first valve set and independently communicates with a downstream hydrogen using pipeline through a second valve set; each solid hydrogen storage unit is selectively communicated with the thermal circulation loop or the cold circulation loop through a third valve group; the first valve group, the second valve group and the third valve group are controlled, so that when the upstream hydrogen supply pipeline has a hydrogen supply demand and the downstream hydrogen use pipeline has a hydrogen use demand, the first solid hydrogen storage unit is configured to be in a hydrogen charging mode, and meanwhile, the second solid hydrogen storage unit is configured to be in a hydrogen discharging mode; the solid hydrogen storage unit in the hydrogen charging mode is communicated with the upstream hydrogen supply pipeline and the cold circulation loop for charging hydrogen, and the solid hydrogen storage unit in the hydrogen discharging mode is communicated with the downstream hydrogen supply pipeline and the hot circulation loop for discharging hydrogen.

The invention relates to the technical field of hydrogen storage, and discloses a solid hydrogen storage reactor and a hydrogen storage / desorption method thereof. The solid hydrogen storage reactor comprises a heat-conducting fluid substrate (1) and a hydrogen storage material substrate (2) which are sequentially stacked, wherein the hydrogen storage material substrate (2) is filled with a solid hydrogen storage composite material; wherein a first flow channel is engraved on the heat-conducting fluid substrate (1) and is used for allowing heat-conducting fluid to pass through; a second flow channel is engraved on the hydrogen storage material substrate (2) and used for hydrogen to pass through, and the first flow channel is not communicated with the second flow channel. The solid hydrogen storage reactor has the characteristic of high heat transfer efficiency, and is beneficial to improving the hydrogen absorption rate.

The utility model relates to a high-efficiency and energy-saving magnesium-based solid hydrogen storage device which comprises a hydrogen storage tank, a magnesium-based solid hydrogen storage device and a hydrogen storage device, the phase change heat storage modules are all placed in the hydrogen storage tank and are arranged at intervals, so that a containing space is formed between every two adjacent phase change heat storage modules; the plurality of magnesium cake hydrogen storage modules are in one-to-one correspondence with the accommodating spaces and are filled in the corresponding accommodating spaces; each phase change heat storage module is filled with a phase change material, heat released when the magnesium cake hydrogen storage module absorbs hydrogen is stored through the phase change materials, and therefore heat energy is supplied when the magnesium cake hydrogen storage module releases hydrogen. By arranging the phase change heat storage module, direct heat exchange can be conducted, heat released in the magnesium cake hydrogen absorption process can be recycled in time, heat can be released when the magnesium cake hydrogen storage module releases hydrogen, and therefore energy recycling and reusing are achieved, the heat exchange efficiency is improved, energy waste is avoided, and high efficiency and energy saving are achieved.