Solid metal hydrogen storage bottle group filling system for producing hydrogen by using methanol

Abstract

The utility model provides a solid metal hydrogen storage bottle group filling system for producing hydrogen by using methanol. The solid metal hydrogen storage bottle group filling system comprises a hydrogen production unit and a hydrogen storage unit, wherein the hydrogen production unit comprises a raw material part and a methanol hydrogen production recombination device for preparing high-purity hydrogen from methanol water from the raw material part; the hydrogen storage unit comprises a gas inlet joint, a pressure regulating valve, a first control valve and a hydrogen storage bottle group which are sequentially connected through a pipeline; wherein the gas inlet joint is connected with the buffer tank; the pressure regulating valve is configured to regulate the pressure of hydrogen input into the hydrogen storage unit; the first control valve is configured to control the pressure of hydrogen entering the hydrogen storage bottle group; and the hydrogen storage bottle group is positioned in a heat exchange container in which cooling liquid is stored so as to be cooled during inflation.

Description

Technical Field

[0001] This application belongs to the field of hydrogen storage, and particularly relates to a filling system for a solid metal hydrogen storage bottle group using methanol to produce hydrogen. Background Art

[0002] At present, the hydrogen energy industry in China is still in its initial stage of development, facing challenges such as difficult hydrogen sources, storage and transportation safety risks, and high costs. The hydrogen source is mainly industrial by-product gas, and hydrogen energy needs to be stored and transported through methods such as high-pressure gaseous storage and transportation, cryogenic liquid storage and transportation, and solid-state storage and transportation. Among them, high-pressure gaseous storage and transportation have problems such as low hydrogen storage density, high-pressure safety hazards, hydrogen embrittlement leakage, and high costs for long-distance hydrogen transportation; cryogenic liquid storage and transportation have problems such as high energy consumption, immature technology, and high costs; compared with gaseous and liquid hydrogen storage methods, solid-state hydrogen storage has significant advantages such as low hydrogen storage pressure, high hydrogen storage density, and good safety, and has broad application prospects in future hydrogen energy transportation, distributed energy use and other fields.

[0003] The hydrogen charging and discharging process of the solid-state hydrogen storage method involves a reversible chemical reaction between hydrogen and metal hydride to achieve the reversible absorption and release of hydrogen, and the process is accompanied by the release and absorption of heat. Heat is released during hydrogen charging and absorbed during hydrogen discharging. However, the traditional hydrogen charging technology for solid metal hydrogen storage bottles has obvious problems and deficiencies: low hydrogen charging efficiency: during the hydrogen charging process, if a large amount of heat released is not efficiently exchanged, the hydrogen charging rate of the hydrogen storage bottle will be significantly reduced, restricting the use of the hydrogen storage bottle in rapid hydrogen charging scenarios; in addition, poor safety: problems such as overheating of the hydrogen storage bottle and overpressure inside may occur during the hydrogen charging process, and even lead to situations such as damage to the structure of the hydrogen storage bottle and safety accidents. Utility Model Content

[0004] In order to solve some problems existing in the prior art, the present utility model provides a filling system for a solid metal hydrogen storage bottle group using methanol to produce hydrogen.

[0005] The filling system for the solid metal hydrogen storage bottle group using methanol to produce hydrogen includes a hydrogen production unit and a hydrogen storage unit; wherein,

[0006] The hydrogen production unit includes: a raw material part, which stores methanol water as a hydrogen production fuel; and a methanol hydrogen production reformer, which is connected to the raw material part; the methanol hydrogen production reformer is configured to prepare high-purity hydrogen from the methanol water from the raw material part and store it in a buffer tank; the purity of the high-purity hydrogen is greater than 99.9%.

[0007] The hydrogen storage unit includes an intake joint, a pressure regulating valve, a first control valve, and a hydrogen storage bottle group that are sequentially connected by pipelines. Among them, the intake joint is connected to the buffer tank to input hydrogen; the pressure regulating valve is configured to adjust the pressure of the hydrogen input into the hydrogen storage unit; the first control valve is configured to control the pressure of the hydrogen entering the hydrogen storage bottle group; the hydrogen storage bottle group is located in a heat exchange container storing coolant to be cooled during charging.

[0008] In one embodiment, a second pipeline is communicated with the first pipeline between the pressure regulating valve and the first control valve, and a pressure relief valve is arranged on the second pipeline for relieving pressure of the first pipeline; a pressure gauge and a flow sensor are arranged on the first pipeline, which are respectively used for monitoring the pressure and flow rate of the input hydrogen.

[0009] In one embodiment, the first end of the second pipeline is located between the pressure regulating valve and the pressure gauge, and the second end of the second pipeline is connected to a blow-off port; the hydrogen storage unit further has a third pipeline, the first end of the third pipeline is located between the flow sensor and the first control valve, and the second end of the third pipeline is also connected to the blow-off port; a second control valve is arranged on the third pipeline, so that the pressure relief valve and the second control valve are in a parallel relationship.

[0010] In one embodiment, the hydrogen storage bottle group is located in the heat exchange container to perform heat exchange in a water bath mode in the heat exchange container.

[0011] In one embodiment, the filling system further has a refrigeration unit for providing cooling capacity for the heat exchange container of the hydrogen storage unit; a heat exchange system for circulating coolant is formed between the hydrogen storage unit and the refrigeration unit; this heat exchange system includes a heat exchange container, a water pump, a water outlet valve, an evaporator, and a water inlet valve that are sequentially arranged and through which the coolant passes. Among them, the water pump is configured to provide power for the coolant circulation; the water outlet valve and the water inlet valve are used to control the cut-off and passage of the coolant; the evaporator is a heat exchanger in the refrigeration unit and provides cooling capacity for the coolant.

[0012] In one embodiment, a liquid level sensor and a temperature sensor are further arranged in the heat exchange container, which are respectively used to control the liquid level and temperature of the coolant.

[0013] In one embodiment, the methanol-to-hydrogen reformer includes a heating evaporator, a reactor, and a membrane purifier; wherein, the heating evaporator is connected to the raw material section and can generate heat to heat and evaporate methanol water from the raw material section into the reactor; the front end of the reactor is connected to the heating evaporator, and the rear end of the reactor is connected to the membrane purifier; the reactor is configured to receive the vaporized methanol water from the heating evaporator and react to generate hydrogen-rich gas; the membrane purifier is configured to receive the hydrogen-rich gas from the reactor and purify it into high-purity hydrogen and exhaust gas; the rear end of the membrane purifier is connected to a buffer tank on the one hand to store high-purity hydrogen, and on the other hand to the heating evaporator to provide exhaust gas as fuel for the heating evaporator.

[0014] In one embodiment, the reactor has a housing in which a plurality of chambers are formed, and each chamber is filled with a catalyst for reforming to produce hydrogen.

[0015] In at least one embodiment of the present application, in the hydrogen production unit of the filling system provided, the components of the methanol-to-hydrogen reformer are modularly integrated, the temperature rise curves of multiple components are synchronized and stable, the thermal balance effect is good, and the energy loss is small; in the operation mode of internal balance heating, only the fan, supply pump, valve, sensor, and control module consume electricity, and the operating power consumption can be controlled at about 100 W. The exhaust gas of the reformer is recycled and used as the heat source for maintaining the endothermic reaction and the temperature of the reactor, without an external heat source; the heating evaporator has no direct contact with air, and there is structural isolation between the front and rear inputs and exhausts, which is safe and reliable, and the overall thermal efficiency of the system is high. In addition, the membrane purifier is small in size and suitable for integrated mobile applications of methanol-to-hydrogen purification.

[0016] In at least one embodiment of the present application, in the hydrogen production and storage process of the filling system provided, hydrogen is produced and used immediately, and the hydrogen production capacity can be adjusted according to demand, with strong adaptability.

[0017] In at least one embodiment of the present application, the filling system provided effectively improves the hydrogen filling efficiency of the solid metal hydrogen storage bottle group, ensures the safety of the hydrogen filling process, further improves the service life and cost of the solid metal hydrogen storage bottle group, and effectively promotes the commercialization process of the solid metal hydrogen storage technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments and descriptions thereof of the present application are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0019] Figure 1 It is a schematic diagram of a solid metal hydrogen storage bottle group filling system using methanol to produce hydrogen in one embodiment;

[0020] In the figure: 200 hydrogen production unit, 201 raw material section, 202 heating evaporator, 203 reactor, 204 membrane purifier, 205 buffer tank, 206 hydrogen output pipe; 400 hydrogen storage unit, 401 intake joint, 402 pressure regulating valve, 404 pressure gauge, 405 flow sensor, 406 first control valve, 407 hydrogen filling joint, 408 hydrogen storage bottle group, 409 pressure relief valve, 410 second control valve, 411 heat exchange container, 412 water pump, 413 water outlet valve, 414 water inlet valve, 421 first pipeline, 422 second pipeline, 423 third pipeline; 100 refrigeration unit, 101 evaporator, 102 condenser, 103 cooling tower, 104 compressor; 301 control module, 302 operation panel. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0022] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "horizontal", "longitudinal", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present application. In addition, the "front end" and "rear end" in the present application are mainly based on the transportation direction of the material, coming from the "front end" and being transported to the "rear end".

[0023] The terms "first", "second", and "third" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", and "third" may explicitly or implicitly include one or more of such features.

[0024] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0025] Such asFigure 1 As shown, this embodiment provides a solid metal hydrogen storage bottle group filling system for producing hydrogen using methanol, which may be referred to as a filling system hereinafter. The filling system includes a hydrogen production unit 200 and a hydrogen storage unit 400.

[0026] Specifically, the hydrogen production unit 200 includes a raw material unit 201 and a methanol hydrogen production recombinator, which may be referred to as a recombinator hereinafter. The raw material unit 201 stores methanol water as a hydrogen production raw material; the recombinator is connected to the raw material unit 201 and is configured to prepare high-purity hydrogen from the methanol water from the raw material unit 201; generally, the purity of the high-purity hydrogen is greater than 99.9%, for example, the volume percentage of hydrogen in the mixed gas is 99.97%, or 99.99%, etc.

[0027] The recombiner includes a heating evaporator 202, a reactor 203 and a membrane purifier 204. Among them:

[0028] The heating evaporator 202 is connected to the raw material unit 201 , and is configured to generate heat and heat the methanol water from the raw material unit 201 to evaporate into the reactor 203 .

[0029] The reactor 203 is connected to the heating evaporator 202, and is configured to receive vaporized methanol water from the heating evaporator 202 and react to generate hydrogen-rich gas. Hydrogen-rich gas is a common term in this field, and here mainly refers to the mixed gas after the reaction of the reactor 203, with a purity of approximately 60-80%, such as 70-80%, 75%, etc. In addition, a catalyst can also be set in the reactor 203 to accelerate the reaction. The overall reaction formula in the reactor 203 is: CH3OH+H2O→CO2+3H2.

[0030] In some embodiments, the reactor 203 has a shell in which a plurality of chambers 2031 are formed, and each chamber 2031 is filled with a catalyst for reforming to produce hydrogen.

[0031] The membrane purifier 204 is connected to the reactor 203, and is configured to receive the hydrogen-rich gas generated from the reactor 203, and purify it into high-purity hydrogen and discharge tail gas (generally containing combustible gases such as CO and CH4). The membrane purifier 204 is connected to the buffer tank 205 on the one hand to store high-purity hydrogen; on the other hand, it is connected to the heating evaporator 202 to supply the tail gas to the heating evaporator 202 as a heating fuel. In this embodiment, the heat required for reforming hydrogen production is generated by the built-in heating reactor, and the operating power consumption can be controlled to only about 100W.

[0032] The buffer tank 205 is used to store and buffer high-purity hydrogen from the reactor 203 and supply it for subsequent storage. The buffer tank 205 is connected with a hydrogen output pipe 206 to output hydrogen to the subsequent hydrogen storage unit 400.

[0033] As Figure 1 shown, the hydrogen storage unit 400 includes an intake joint 401, a pressure regulating valve 402, a first control valve 406 and a hydrogen storage bottle group 408 that are sequentially connected by pipelines. Among them, the intake joint 401 is connected to the hydrogen output pipe 206 of the hydrogen production unit 200, and a small compressor (not shown in the figure) can be provided between the two to provide power for hydrogen storage. The pressure regulating valve 402 is configured to adjust the pressure of the hydrogen input into the hydrogen storage unit 400. The first control valve 406 is configured to control the pressure of the hydrogen entering the hydrogen storage bottle group 408.

[0034] Further, a second pipeline 422 communicates with the first pipeline 421 between the pressure regulating valve 402 and the first control valve 406. A pressure relief valve 409 is provided on the second pipeline 422 for relieving pressure of the first pipeline 421 or for emergency pressure regulation, and is discharged through a relief port 403. The pressure relief valve 409 can be an electric valve, which automatically relieves pressure when a certain pressure is reached. A pressure gauge 404 and a flow sensor 405 are provided on the first pipeline 421 for measuring the pressure and flow rate of the input hydrogen respectively.

[0035] In an embodiment, the first end of the second pipeline 422 is located between the pressure regulating valve 402 and the pressure gauge 404, and its second end is connected to the relief port 403. The hydrogen storage unit 400 further has a third pipeline 423, whose first end is located between the flow sensor 405 and the first control valve 406, and its second end is also connected to the relief port 403. A second control valve 410 is provided on the third pipeline 423, such that the pressure relief valve 409 and the second control valve 410 are in a parallel relationship and are redundant to each other.

[0036] The outlet ends of the respective control valves 406 are respectively connected to the respective solid metal hydrogen storage bottle groups 408 through hydrogen filling joints 407 to fill hydrogen into the hydrogen storage bottle groups 408.

[0037] The hydrogen storage bottle group 408 can be multiple groups, and each group includes multiple hydrogen storage bottles; as shown in the figure, there are 3 groups of hydrogen storage bottle groups 408, and each group includes 3 hydrogen storage bottles, for a total of 9 hydrogen storage bottles; it can be increased or decreased according to actual needs. The hydrogen storage bottle group 408 is located in a heat exchange container 411 so as to be able to cool and exchange heat in a water bath manner in the heat exchange container 411, and its heat exchange efficiency is high.

[0038] The filling system also has a refrigeration unit 100 that provides cold energy for the heat exchange container 411 of the hydrogen storage unit 400. The refrigeration unit 100 includes an evaporator 101 and a condenser 102 that are cyclically connected to each other, and the first channel of the evaporator 101 is connected to the first channel of the condenser 102 through a compressor 104 to obtain cold energy. The second channel of the condenser 102 is connected to an external cooling tower 103 for cooling. The refrigeration principle of the refrigeration unit 100 in this embodiment can be understood by referring to the refrigeration principle of air conditioning.

[0039] A heat exchange system for circulating coolant is formed between the hydrogen storage unit 400 and the refrigeration unit 100; the heat exchange system includes a heat exchange container 411, a water pump 412, a water outlet valve 413, an evaporator 101 and a water inlet valve 414, which are arranged in sequence and through which coolant passes. The coolant can be selected as cooling water or other cooling liquid. The coolant circulates in the heat exchange system, is cooled at the evaporator 101, and exchanges heat with the hydrogen storage bottle group 408 in the heat exchange container 411 to cool the hydrogen storage bottle group 408. The water pump 412 is configured to provide power for the circulation of the coolant; the water outlet valve 413 and the water inlet valve 414 are used to control the cut-off and passage of the coolant. The heat exchange system is a closed cycle, and the evaporator 101 can be a plate heat exchanger.

[0040] In some embodiments, a liquid level sensor and a temperature sensor are also provided in the heat exchange container 411 to control the liquid level and temperature of the coolant. Specifically, the liquid level sensor monitors the height of the coolant in the heat exchange container 411 in real time, and if the height is lower than the set height threshold, the operator is notified to add water. The temperature sensor monitors the temperature of the coolant in the heat exchange container 411 in real time, and if the water temperature is higher than the set water temperature threshold, the refrigeration unit 100 is started to cool the circulating water.

[0041] The heat exchange system in this embodiment adopts a closed water circulation form, and the heat released during the hydrogen storage bottle group charging process is taken away by circulating coolant to achieve cooling of the hydrogen storage bottle group. The heat exchange container 411 is used to store coolant, and the coolant circulation pipeline flows from the heat exchange container 411 to the refrigeration unit 100, and then flows back to the heat exchange container 411, forming a closed circulation loop. The evaporator 101 has a built-in high-efficiency plate heat exchanger to achieve rapid heat exchange cooling, and the temperature of the hydrogen storage bottle group is maintained below 20°C for automatic hydrogen charging. A temperature sensor is set in the heat exchange container 411. If the actual temperature of the coolant is higher than the set temperature threshold, the refrigeration unit 100 is automatically started; if the coolant temperature is lower than the set temperature threshold, the refrigeration unit 100 automatically stops running.

[0042] In some embodiments, Figure 1 As shown, the filling system further includes a control module 301 .

[0043] The control module 301 is electrically connected to a pressure regulating valve 402, a first control valve 406, a pressure relief valve 409, a second control valve 410, a water inlet valve 414, and a water outlet valve 413 respectively to control the opening and closing of each valve. The control module 301 is electrically connected to a pressure gauge 404 to monitor the pressure value of the first pipeline 421. The control module 301 is electrically connected to a flow sensor 405 to monitor the hydrogen flow rate in the first pipeline 421. The control module 301 is electrically connected to a temperature sensor to monitor the temperature of the coolant in the heat exchange container 411. The control module 301 is electrically connected to a liquid level sensor to monitor the liquid level of the coolant in the heat exchange container 411.

[0044] The control module 301 can adopt various processors that can meet the conditions, such as a CPU, a PLC, an industrial control computer, a computer and other hardware. By programming and storing programs that can implement corresponding functions in a memory, and through the execution of these programs by the control module 301, the various functions described above are realized. This is a conventional control means that can be thought of and is also understandable to those skilled in the art.

[0045] During the hydrogen filling process, the control module 301 collects and monitors various data indicators such as hydrogen flow rate, pressure, leakage concentration, coolant temperature, and liquid level in real time and uses them as discrimination conditions to control the automatic hydrogen filling, discharging, and the start and stop of the cooling unit. The hydrogen filling pressure, hydrogen filling time, and the hydrogen filling status of each hydrogen storage bottle can also be displayed in real time through the operation panel 302. After detecting that the hydrogen tank is full of hydrogen, the hydrogen filling is automatically stopped. The instrument valve group for collection and monitoring includes a pressure regulating valve, a pressure gauge, a flow sensor, a control valve, a pressure relief valve, a temperature sensor, a liquid level sensor, a hydrogen concentration detector, a water inlet valve, a water outlet valve, as well as start, stop, and emergency stop buttons, and has functions such as automatic cut-off, overpressure protection, flow measurement, and temperature measurement.

[0046] In addition, it is well known to those skilled in the art that each component of the present application is connected by pipelines or circuits for material transportation or signal transmission.

[0047] The hydrogen filling system provided by at least one embodiment of the present application can integrate hydrogen production and hydrogen storage; in the hydrogen storage unit, a closed-cycle cooling is adopted in combination with a plate heat exchanger, which effectively improves the heat exchange efficiency of the solid metal hydrogen storage bottle group. Cooperating with the control module, it can intelligently control the start and stop of the cooling unit, and dynamically adjust the hydrogen filling temperature of the hydrogen storage bottle group in real time, thereby improving the hydrogen filling efficiency of the hydrogen storage bottle group. The design fully considers safety factors, and uses various sensors for accurately monitoring hydrogen pressure, temperature, and flow rate, as well as safety valves. The control module is used to collect and monitor various index data in real time, realizing intelligent monitoring of the whole process, and ensuring that measures can be taken in time to ensure safety in case of abnormal situations. The actual temperature in the heat exchange container is monitored in real time through a temperature sensor, and the start and stop of the chiller are intelligently controlled by the control module, reducing energy consumption waste and improving energy utilization efficiency. The modular intensive design is adopted, which occupies a small area and can be flexibly deployed on-site. According to the actual hydrogen demand, the number of hydrogen-filled bottles can be flexibly expanded, and it can support the hydrogen filling of more than 50 or 100 hydrogen storage bottles at a time.

[0048] Finally, it should be noted that the embodiments in this specification are described in a progressive manner, and the key points of each embodiment are the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.

[0049] The above embodiments are only used to illustrate the technical solutions of the present application and not to limit them; although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications can still be made to the specific implementation manners of the present application or equivalent replacements can be made to some technical features; without departing from the spirit of the technical solutions of the present application, they should all be covered within the scope of the technical solutions claimed in the present application.

Claims

1. A solid metal hydrogen storage bottle group filling system using methanol to produce hydrogen, characterized in that: It includes a hydrogen production unit and a hydrogen storage unit; wherein, The hydrogen production unit comprises: a raw material part, in which methanol water as a hydrogen production fuel is stored; and a methanol hydrogen production recombiner connected to the raw material part; the methanol hydrogen production recombiner is configured to prepare high-purity hydrogen from the methanol water from the raw material part and store it in a buffer tank; the purity of the high-purity hydrogen is greater than 99.9%; The hydrogen storage unit includes an air inlet connector, a pressure regulating valve, a first control valve and a hydrogen storage bottle group which are connected in sequence by pipelines; wherein the air inlet connector is connected to a buffer tank to input hydrogen; the pressure regulating valve is configured to adjust the pressure of the hydrogen input to the hydrogen storage unit; the first control valve is configured to control the pressure of the hydrogen entering the hydrogen storage bottle group; the hydrogen storage bottle group is located in a heat exchange container storing coolant so as to be cooled during filling.

2. The solid metal hydrogen storage bottle group filling system for producing hydrogen using methanol according to claim 1 is characterized in that: The first pipeline between the pressure regulating valve and the first control valve is connected with a second pipeline, and a pressure relief valve is arranged on the second pipeline for relieving pressure of the first pipeline; The first pipeline is provided with a pressure gauge and a flow sensor, which are used to monitor the pressure and flow of the input hydrogen respectively.

3. The solid metal hydrogen storage bottle group filling system for producing hydrogen using methanol according to claim 2 is characterized in that: The first end of the second pipeline is located between the pressure regulating valve and the pressure gauge, and the second end of the second pipeline is connected to the vent; the hydrogen storage unit also has a third pipeline, the first end of the third pipeline is located between the flow sensor and the first control valve, and the second end of the third pipeline is also connected to the vent; the third pipeline is provided with a second control valve, so that the pressure relief valve and the second control valve are in parallel.

4. The solid metal hydrogen storage bottle group filling system for producing hydrogen using methanol according to claim 1 is characterized in that: The hydrogen storage bottle group is located in a heat exchange container to perform water bath heat exchange in the heat exchange container.

5. The solid metal hydrogen storage bottle group filling system for producing hydrogen using methanol according to any one of claims 1 to 4, characterized in that: The filling system also has a refrigeration unit that provides coldness for the heat exchange container of the hydrogen storage unit; a heat exchange system for circulating coolant is formed between the hydrogen storage unit and the refrigeration unit; the heat exchange system includes a heat exchange container, a water pump, a water outlet valve, an evaporator and a water inlet valve that are arranged in sequence and through which the coolant passes; wherein the water pump is configured to provide power for the circulation of the coolant; the water outlet valve and the water inlet valve are used to control the cut-off and passage of the coolant; the evaporator is a heat exchanger in the refrigeration unit, which provides coldness for the coolant.

6. The solid metal hydrogen storage bottle group filling system for producing hydrogen using methanol according to claim 5 is characterized in that: The heat exchange container is also provided with a liquid level sensor and a temperature sensor, which are used to control the liquid level and temperature of the coolant respectively.

7. A solid metal hydrogen storage bottle group filling system for producing hydrogen using methanol according to any one of claims 1-4 and 6, characterized in that: A heating evaporator, a reactor and a membrane purifier; wherein the heating evaporator is connected to a raw material section and is capable of generating heat to heat and evaporate methanol water from the raw material section into the reactor; the front end of the reactor is connected to the heating evaporator, and the rear end of the reactor is connected to the membrane purifier; the reactor is configured to receive vaporized methanol water from the heating evaporator and react to generate hydrogen-rich gas; the membrane purifier is configured to receive the hydrogen-rich gas from the reactor and purify it into high-purity hydrogen and discharge tail gas; the rear end of the membrane purifier is connected to a buffer tank on the one hand to store high-purity hydrogen, and is connected to the heating evaporator on the other hand to provide tail gas as fuel for the heating evaporator.

8. The solid metal hydrogen storage bottle group filling system for producing hydrogen using methanol according to claim 7 is characterized in that: The reactor has a housing in which a plurality of chambers are formed, and each chamber is filled with a catalyst for reforming to produce hydrogen.

9. The solid metal hydrogen storage bottle group filling system for producing hydrogen using methanol according to claim 3 is characterized in that: It also includes a control module; the control module is electrically connected to the pressure regulating valve, the first control valve, the pressure relief valve, and the second control valve respectively to control the opening and closing of each valve; the control module is electrically connected to the pressure gauge to monitor the pressure value of the first pipeline; the control module is electrically connected to the flow sensor to monitor the hydrogen flow of the first pipeline.

10. The solid metal hydrogen storage bottle group filling system for producing hydrogen using methanol according to claim 6, characterized in that: It also includes a control module; the control module is electrically connected to the water inlet valve and the water outlet valve respectively to control the opening and closing of each valve; the control module is electrically connected to the temperature sensor to monitor the temperature of the coolant in the heat exchange container; the control module is electrically connected to the liquid level sensor to monitor the liquid level of the coolant in the heat exchange container.

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