Methanol water hydrogen production equipment

By employing a combination of electric heating devices and heat exchangers, the hydrogen production capacity in the methanol-water hydrogen production equipment can be adjusted and produced in a timely manner. This solves the problem of resource waste caused by fixed hydrogen production capacity in existing technologies and improves the flexibility and efficiency of the equipment.

CN224142187UActive Publication Date: 2026-04-21GUANGDONG SANTENG TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGDONG SANTENG TECHNOLOGY CO LTD
Filing Date
2025-05-15
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

In existing technologies, the hydrogen production equipment cannot effectively address the issue of adjusting the hydrogen production rate from methanol and water, resulting in long start-up times and a fixed hydrogen production rate, thus leading to resource waste.

Method used

An electric heating device is used to heat the methanol-water mixture. The hydrogen production rate can be adjusted by regulating the heating power of the electric heating device. Combined with a heat exchanger and purification unit, timely hydrogen production is achieved and resource waste is avoided.

Benefits of technology

It enables adjustable and timely hydrogen production, avoids resource waste caused by surplus hydrogen production, and improves the flexibility and efficiency of hydrogen production equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses methanol-water hydrogen production equipment which comprises a mixing station, a heat exchanger, an electric heating device, a reactor and a purification device, the mixing station is used for containing methanol-water mixed liquor, and the mixing station, the electric heating device, the reactor and the purification device are sequentially communicated through pipelines. The electric heating device is used for electrically heating a mixed solution of methanol and water to react to generate crude hydrogen so as to purify hydrogen, the heat exchanger is provided with a cold source channel and a heat source channel, and the cold source channel of the heat exchanger is arranged on a pipeline between the mixing station and the electric heating device; a heat source channel of the heat exchanger is arranged on a pipeline between the reactor and the purification device, so that a methanol aqueous solution of the mixing station exchanges heat with crude hydrogen of the reactor in the heat exchanger and then flows to the electric heating device and the purification device respectively. According to the hydrogen production device, the hydrogen production amount can be adjusted while hydrogen is produced in time, and resource waste caused by preparation of surplus hydrogen is avoided.
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Description

Technical Field

[0001] This utility model relates to the field of hydrogen production technology, and in particular to a methanol-water hydrogen production device. Background Technology

[0002] Methanol-water hydrogen production technology is a process that converts methanol and water into hydrogen and carbon dioxide. The reaction principle is: CH3OH + H2O → CO2 + 3H2 (ΔH = +49.4 kJ / mol). This reaction is a strongly endothermic process, requiring a continuous supply of heat to maintain the reaction temperature (typically 200–300°C). Current technologies generally utilize a thermal oil heater to heat the thermal oil, which is then circulated to heat the methanol-water reactants, thus reaching the reaction temperature for hydrogen production. However, current technologies cannot control the temperature of the circulating thermal oil, resulting in a fixed hydrogen production rate. Therefore, even with surplus hydrogen production, the equipment needs to operate at full capacity, leading to resource waste. Furthermore, the thermal oil needs to be preheated, resulting in a long start-up time and delaying timely hydrogen production. Utility Model Content

[0003] The main purpose of this invention is to provide a methanol-water hydrogen production device that enables timely hydrogen production while allowing for adjustable hydrogen production volume, thus avoiding resource waste caused by the preparation of excess hydrogen.

[0004] To achieve the above objectives, the present invention proposes a methanol-water hydrogen production device, comprising: a mixing station, a heat exchanger, an electric heating device, a reactor, and a purification device. The mixing station is used to hold a methanol-water mixture. The mixing station, the electric heating device, the reactor, and the purification device are sequentially connected by pipelines, so that the methanol-water mixture reacts under electric heating to generate crude hydrogen and purify hydrogen gas. The heat exchanger has a cold source channel and a heat source channel. The cold source channel of the heat exchanger is located in the pipeline between the mixing station and the electric heating device, and the heat source channel of the heat exchanger is located in the pipeline between the reactor and the purification device, so that the methanol-water solution in the mixing station and the crude hydrogen in the reactor exchange heat in the heat exchanger before flowing to the electric heating device and the purification device respectively.

[0005] Optionally, the electric heating device includes an evaporator and a superheater. The heat exchanger, the evaporator, the superheater, and the reactor are connected in sequence by pipelines. The methanol-water mixture after heat exchange flows sequentially through the evaporator and the superheater. The evaporator and the superheater respectively electrically heat the flowing methanol-water fluid.

[0006] Optionally, the evaporator includes a first metal substrate, a first heating tube, and a first coil. The first heating tube and the first coil are encased in the first metal substrate. The two ends of the first coil are respectively connected to the heat exchanger and the superheater. The first heating tube heats the fluid in the first coil by heating the first metal substrate.

[0007] Optionally, the superheater includes a second metal substrate, a second heating tube, and a second coil. The second heating tube and the second coil are encased in the second metal substrate. The two ends of the second coil are respectively connected to the evaporator and the reactor. The second heating tube heats the fluid in the second coil by heating the second metal substrate.

[0008] Optionally, the evaporator and the superheater are arranged at an interval, with the superheater located above the evaporator so that the fluid electrically heated by the evaporator flows to the superheater above.

[0009] Optionally, the purification device includes a gas-liquid separation unit and an adsorption tower. The heat exchanger, the gas-liquid separation unit, and the adsorption tower are connected in sequence by pipelines so that the crude hydrogen after heat exchange is purified into hydrogen gas after gas-liquid separation and adsorption to remove impurities.

[0010] Optionally, the gas-liquid separation unit includes a cooler and a gas-liquid separator. The heat exchanger, the cooler, the gas-liquid separator, and the adsorption tower are connected in sequence by pipelines so that the crude hydrogen after heat exchange is cooled before gas-liquid separation.

[0011] Optionally, the mixing station includes a methanol tank, a pure water tank, and a mixing tank. The methanol tank is used to hold methanol, and the pure water tank is used to hold pure water. The methanol tank and the pure water tank are respectively connected to the mixing tank via pipelines, so that methanol and pure water flow to the mixing tank to form a methanol-water mixture.

[0012] Optionally, the methanol-water hydrogen production equipment further includes a control cabinet, wherein the mixing station, the electric heating device, the reactor, and the purification device are respectively connected to the control cabinet, so that the control cabinet controls the electric heating of the methanol-water mixture to react and generate crude hydrogen, thereby purifying hydrogen gas.

[0013] Optionally, the control cabinet has an explosion-proof enclosure, and the explosion-proof enclosure, the mixing station, the electric heating device, the reactor and the purification device are spaced apart on a support, and the explosion-proof enclosure is filled with inert gas.

[0014] In this invention, a methanol-water mixture is electrically heated to produce crude hydrogen, thus purifying the hydrogen gas. The electric heating device provides the energy for the hydrogen production reaction by electrically heating the methanol-water mixture. Since the heating power of the electric heating device is adjustable, the amount of hydrogen produced is also adjustable. Furthermore, the electric heating device heats the flowing methanol-water mixture electrically, eliminating the need for preheating the heat transfer oil and ensuring sufficient heating of the flowing methanol-water fluid, thereby achieving timely hydrogen production. It is understood that this invention achieves timely hydrogen production while also enabling adjustable hydrogen production, avoiding resource waste caused by the preparation of excess hydrogen. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a methanol-water hydrogen production device according to an embodiment of the present invention;

[0017] Figure 2 for Figure 1 Another perspective view of the methanol-water hydrogen production equipment;

[0018] Explanation of icon numbers:

[0019] name label name label Methanol-water hydrogen production equipment 1000 reactor 400 Mixing station 100 Purification equipment 500 Pure water tank 110 Gas-liquid separation unit 510 Methanol tank 130 Cooler 511 Mixing box 150 gas-liquid separator 513 heat exchanger 200 Adsorption tower 530 electric heating device 300 control cabinet 600 Evaporator 310 support 700 superheater 330 roller 701

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0023] See Figures 1 to 2 As shown in one embodiment of this utility model, a methanol-water hydrogen production device 1000 includes: a mixing station 100, a heat exchanger 200, an electric heating device 300, a reactor 400, and a purification device 500. The mixing station 100 is used to hold a methanol-water mixture. The mixing station 100, the electric heating device 300, the reactor 400, and the purification device 500 are connected in sequence by pipelines so that the methanol-water mixture reacts under electric heating to generate crude hydrogen and purify hydrogen gas. The heat exchanger 200 has a cold source channel and a heat source channel. The cold source channel of the heat exchanger 200 is located in the pipeline between the mixing station 100 and the electric heating device 300, and the heat source channel of the heat exchanger 200 is located in the pipeline between the reactor 400 and the purification device 500, so that the methanol-water solution in the mixing station 100 and the crude hydrogen in the reactor 400 exchange heat in the heat exchanger 200 and then flow to the electric heating device 300 and the purification device 500 respectively.

[0024] In this invention, a methanol-water mixture is electrically heated to produce crude hydrogen, thus purifying the hydrogen gas. An electric heating device 300 electrically heats the methanol-water mixture to provide energy for the hydrogen production reaction. Since the heating power of the electric heating device 300 is adjustable, the amount of hydrogen produced is adjustable by adjusting the heating power of the electric heating device 300. Furthermore, the electric heating device 300 heats the flowing methanol-water mixture electrically, eliminating the need to preheat the heat transfer oil, thereby achieving timely hydrogen production. It is understood that this invention achieves timely hydrogen production while also enabling adjustable hydrogen production, avoiding resource waste caused by the preparation of excess hydrogen.

[0025] It should be noted that the pipeline in this embodiment can be equipped with a booster pump as needed. The booster pump provides power to allow the methanol-water mixture to flow along the pipeline. The methanol-water mixture flows to the electric heating device 300 to be heated to the reaction temperature and then flows to the reactor 400. The inner cavity of the reactor 400 is filled with a catalyst. The methanol-water fluid that has reached the reaction temperature undergoes a hydrogen production reaction under the action of the catalyst. The crude hydrogen produced by the reactor 400 is purified to produce hydrogen gas. Compared with the prior art, this utility model realizes small-flow hydrogen production and miniaturized equipment hydrogen production through a skid-mounted hydrogen production method. This utility model can adjust the heating power of the electric heating device 300 to control the amount of hydrogen produced per unit time, achieving adjustable hydrogen production rate of 30% to 110%, pressure of 0.1 to 0.9 MPa, and concentration of 99.9% to 99.999%. In this embodiment, the heat exchanger 200 is equipped with heat exchange tubes, forming a cold source channel and a heat source channel. The low-temperature methanol-water mixture flowing out of the mixing station 100 flows to the electric heating device 300 through the cold source channel, while the high-temperature crude hydrogen in the reactor 400 flows to the purification device 500 through the heat source channel. To enhance the heat exchange between the high-temperature crude hydrogen and the low-temperature methanol-water solution, the cold source channel and the heat source channel can be spirally distributed to increase the travel distance between the low-temperature methanol-water mixture and the high-temperature crude hydrogen, thereby achieving sufficient heat exchange. Furthermore, thermally conductive filler can be filled between the cold source channel and the heat source channel to further enhance heat exchange. This embodiment is not limited to this, and all of the above are within the protection scope of this utility model. Additionally, the impurities in the crude hydrogen in this embodiment include impurity gases such as methanol, water, carbon monoxide, carbon dioxide, and methane. The purification device 500 is used to remove these impurity gases, thereby obtaining high-purity hydrogen. Of course, the purification device 500 of this utility model can take various forms, as long as it can effectively remove impurity gases to obtain high-purity hydrogen. This embodiment is not limited to this, and all of the above are within the protection scope of this utility model.

[0026] See Figures 1 to 2As shown, in one embodiment of this invention, the electric heating device 300 includes an evaporator 310 and a superheater 330. The heat exchanger 200, evaporator 310, superheater 330, and reactor 400 are sequentially connected by pipelines. The methanol-water mixture after heat exchange flows sequentially through the evaporator 310 and superheater 330 before flowing into the reactor 400. The evaporator 310 and superheater 330 electrically heat the flowing fluid. It should be noted that this invention heats the methanol-water mixture sequentially through the evaporator 310 and superheater 330. By adjusting the heating power of the evaporator 310, the methanol-water mixture is heated to 160°C. By adjusting the heating power of the superheater 330, the methanol-water mixture is heated to 230°C. Thus, the fluid reaching the reaction temperature flows into the reactor 400, where hydrogen is generated under the catalysis of the reactor 400, achieving rapid hydrogen production. In this embodiment, the evaporator 310 and the superheater 330 have heating coils. The fluid flowing through the heating coils is heated, which ensures that the methanol-water fluid is heated evenly while reducing the floor space occupied by the heating structure.

[0027] See Figures 1 to 2 As shown, in one embodiment of this utility model, the evaporator 310 includes a first metal substrate, a first heating tube, and a first coil. The first heating tube and the first coil are encased within the first metal substrate. The two ends of the first coil are respectively connected to a heat exchanger 200 and a superheater 330 via pipes. The first heating tube heats the fluid within the first coil by heating the first metal substrate. Preferably, the first heating tube is embedded inside the first coil. The first heating tube and the first coil are formed integrally by casting a thermally conductive metal, thereby forming the first metal substrate, within which the first heating tube and the first coil are encased. It should be noted that in this embodiment, heat is transferred to the methanol-water fluid being heated in the first coil via the thermally conductive metal. The thermally conductive metal has good thermal conductivity due to the free movement of electrons in the metal lattice, which facilitates the transfer of heat from the first heating tube to the methanol-water fluid flowing through the first coil. Preferably, the first coil is a spiral tube with thermal conductivity, which increases the contact area between the first metal substrate and the first coil, and increases the travel distance of the methanol-water fluid within the evaporator 310. This improves the thermal efficiency of the evaporator 310, ensuring the methanol-water fluid in the first coil is fully heated and rapidly heated to 160°C, which is beneficial for rapid hydrogen production. In this embodiment, the first heating tube does not come into contact with the heated methanol-water fluid, thus avoiding corrosion of the first heating tube and extending the service life of the evaporator 310.

[0028] See Figures 1 to 2As shown, in one embodiment of this utility model, the superheater 330 includes a second metal substrate, a second heating tube, and a second coil. The second heating tube and the second coil are encased within the second metal substrate. The two ends of the second coil are respectively connected to the evaporator 310 and the reactor 400 via pipes. The second heating tube heats the fluid within the second coil by heating the second metal substrate. Preferably, the second heating tube is embedded inside the second coil. The second heating tube and the second coil are formed integrally by casting a thermally conductive metal, thereby forming the second metal substrate, within which the second heating tube and the second coil are encased. It should be noted that in this embodiment, heat is transferred to the methanol-water fluid being heated in the second coil via the thermally conductive metal. The thermally conductive metal has good thermal conductivity due to the free movement of electrons in the metal lattice, which facilitates the transfer of heat from the second heating tube to the methanol-water fluid flowing through the second coil. Preferably, the second coil is a spiral tube with thermal conductivity, which increases the contact area between the second metal substrate and the second coil, and increases the travel distance of the methanol-water fluid within the superheater 330. This improves the thermal efficiency of the superheater 330, ensuring the methanol-water fluid in the second coil is fully heated and rapidly heated to 230°C, which is beneficial for rapid hydrogen production. In this embodiment, the second heating tube does not come into contact with the heated methanol-water fluid, thus avoiding corrosion of the second heating tube and extending the service life of the superheater 330.

[0029] See Figures 1 to 2 As shown, in one embodiment of this invention, the evaporator 310 and the superheater 330 are arranged alternately, with the superheater 330 positioned above the evaporator 310 so that the fluid electrically heated by the evaporator 310 flows to the superheater 330 above. It should be noted that, in this embodiment, while ensuring the effective electrical heating of the methanol-water fluid, the methanol-water fluid, electrically heated to 160°C by the evaporator 310, then flows to the superheater 330 above. This allows the methanol-water fluid to be rapidly heated to the reaction temperature, facilitating rapid hydrogen production. Furthermore, positioning the superheater 330 above the evaporator 310 fully utilizes the upper space, reducing the floor space required.

[0030] See Figures 1 to 2As shown, in one embodiment of this utility model, the purification device 500 includes a gas-liquid separation unit 510 and an adsorption tower 530. The heat exchanger 200, the gas-liquid separation unit 510, and the adsorption tower 530 are sequentially connected by pipelines to purify the crude hydrogen after heat exchange by gas-liquid separation and adsorption to remove impurities. It should be noted that the temperature of the crude hydrogen decreases after heat exchange. Thus, the crude hydrogen after heat exchange passes sequentially through the gas-liquid separation unit 510 and the adsorption tower 530. Gas-liquid separation facilitates the separation of liquefied water and methanol. The separated gas then flows to the adsorption tower 530, whereby the adsorption tower 530 effectively adsorbs impurity gases such as carbon dioxide, carbon monoxide, methane, and water vapor, thereby achieving the preparation of high-purity hydrogen. Of course, this embodiment may include multiple adsorption towers 530, which are respectively connected to the gas-liquid separation unit 510. The gas after gas-liquid separation enters the multiple adsorption towers 530 in sequence. Different adsorbents are filled into the adsorption towers 530, and the different adsorbents fully adsorb different impurities, thereby realizing the preparation of high-purity hydrogen.

[0031] See Figures 1 to 2 As shown, in one embodiment of this utility model, the gas-liquid separation unit 510 includes a cooler 511 and a gas-liquid separator 513. The heat exchanger 200, cooler 511, gas-liquid separator 513, and adsorption tower 530 are sequentially connected by pipelines to cool the crude hydrogen after heat exchange before gas-liquid separation. It should be noted that in this embodiment, the crude hydrogen after heat exchange is cooled by the cooler 511. The cooler 511 uses flowing cold water to cool the crude hydrogen after heat exchange. The water and methanol are liquefied after cooling. In this way, the water and methanol liquefied by the gas-liquid separator 513 can be separated, which is beneficial to fully remove water and methanol from the hydrogen and achieve the preparation of high-purity hydrogen.

[0032] See Figures 1 to 2 As shown, in one embodiment of this utility model, the mixing station 100 includes a methanol tank 130, a pure water tank 110, and a mixing tank 150. The methanol tank 130 is used to hold methanol, and the pure water tank 110 is used to hold pure water. The methanol tank 130 and the pure water tank 110 are respectively connected to the mixing tank 150 by pipelines, so that methanol and pure water flow to the mixing tank 150 to form a methanol-water mixture. It should be noted that the mixing tank 150 is equipped with a level gauge. The methanol tank 130 and the pure water tank 110 are respectively connected to the mixing tank 150 by pipelines. The pipeline between the methanol tank 130 and the mixing tank 150 may be equipped with a valve, and a valve may be installed between the pure water tank 110 and the mixing tank 150. The methanol-water hydrogen production equipment 1000 is equipped with a control cabinet 600. The valves and the level gauge are respectively connected to the control cabinet 600. The control cabinet 600 opens the valves according to the level detected by the level gauge, thereby realizing the automatic mixing of methanol and pure water.

[0033] See Figures 1 to 2As shown, in one embodiment of this utility model, the methanol tank 130 and the pure water tank 110 are arranged side by side, and are positioned above the mixing tank 150 so that methanol and water flow to the mixing tank 150 below. It should be noted that by arranging the methanol tank 130 and the pure water tank 110 side by side above the mixing tank 150, under the influence of gravity, the methanol in the methanol tank 130 and the water in the pure water tank 110 flow to the mixing tank 150 below, thus avoiding energy loss. Of course, the methanol tank 130 and the pure water tank 110 can be installed and fixed using brackets; this embodiment is not limited to this, and all of the above are within the protection scope of this utility model. This embodiment, while avoiding energy loss, makes reasonable use of the upper space and reduces the floor space occupied.

[0034] See Figures 1 to 2 As shown, in one embodiment of this utility model, the methanol-water hydrogen production equipment 1000 further includes a control cabinet 600. A mixing station 100, an electric heating device 300, a reactor 400, and a purification device 500 are respectively connected to the control cabinet 600, so that the control cabinet 600 controls the electric heating of the methanol-water mixture to react and generate crude hydrogen, thereby purifying hydrogen gas. It should be noted that this embodiment achieves intelligent control of the hydrogen production process by controlling the mixing station 100, the electric heating device 300, the reactor 400, and the purification device 500 through the control cabinet 600. Of course, in this example, control valves can also be installed on the corresponding pipelines, with the control cabinet 600 connected to the control valves to control the fluid flow direction and achieve intelligent hydrogen production. This embodiment is not limited to this, and all of the above are within the protection scope of this utility model.

[0035] See Figures 1 to 2 As shown, in one embodiment of this utility model, the control cabinet 600 has an explosion-proof enclosure. The explosion-proof enclosure, the mixing station 100, the electric heating device 300, the reactor 400, and the purification device 500 are spaced apart on the support 700. The explosion-proof cabinet 600 is filled with inert gas. It should be noted that the control cabinet of this utility model is installed on the support 700 through the explosion-proof enclosure. The explosion-proof enclosure, the mixing station 100, the electric heating device 300, the reactor 400, and the purification device 500 are spaced apart on the support 700. The heat exchanger 200 is connected to the support 700 through pipelines. The explosion-proof enclosure is filled with inert gas, which can be compressed air. In this way, even if there is a leak of explosive gas, the explosive gas cannot enter the interior of the control cabinet 600, thus avoiding safety accidents while realizing skid-mounted hydrogen production. To facilitate the movement of the support 700, rollers 701 can be provided at the bottom of the support 700 in this embodiment. In this way, the movement of the entire structure on the support 700 is realized by the rollers 701, which ensures the stability of the methanol-water hydrogen production equipment 1000 and is conducive to the handling of the methanol-water hydrogen production equipment 1000.

[0036] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A methanol-water hydrogen production device, characterized in that, include: The system includes a mixing station, a heat exchanger, an electric heating device, a reactor, and a purification device. The mixing station is used to hold a methanol-water mixture. The mixing station, the electric heating device, the reactor, and the purification device are sequentially connected by pipelines to allow the methanol-water mixture to react under electric heating to generate crude hydrogen and purify hydrogen gas. The heat exchanger has a cold source channel and a heat source channel. The cold source channel of the heat exchanger is located in the pipeline between the mixing station and the electric heating device, and the heat source channel of the heat exchanger is located in the pipeline between the reactor and the purification device. This allows the methanol-water solution from the mixing station to exchange heat with the crude hydrogen from the reactor in the heat exchanger before flowing to the electric heating device and the purification device, respectively.

2. The hydrogen production apparatus from methanol water as claimed in claim 1, wherein, The electric heating device includes an evaporator and a superheater. The heat exchanger, the evaporator, the superheater and the reactor are connected in sequence by pipelines. The methanol-water mixture after heat exchange flows through the evaporator and the superheater in sequence. The evaporator and the superheater respectively electrically heat the flowing methanol-water fluid.

3. The hydrogen production apparatus from methanol water as claimed in claim 2, wherein, The evaporator includes a first metal substrate, a first heating tube, and a first coil. The first heating tube and the first coil are encased in the first metal substrate. The two ends of the first coil are respectively connected to the heat exchanger and the superheater. The first heating tube heats the fluid in the first coil by heating the first metal substrate.

4. The hydrogen production apparatus from methanol water as claimed in claim 2, wherein, The superheater includes a second metal substrate, a second heating tube, and a second coil. The second heating tube and the second coil are encased in the second metal substrate. The two ends of the second coil are respectively connected to the evaporator and the reactor. The second heating tube heats the fluid in the second coil by heating the second metal substrate.

5. The hydrogen production apparatus from methanol water as claimed in claim 2, wherein, The evaporator and the superheater are arranged at intervals, with the superheater located above the evaporator so that the fluid electrically heated by the evaporator flows to the superheater above.

6. The methanol water hydrogen production apparatus according to any one of claims 1 to 5, wherein The purification device includes a gas-liquid separation unit and an adsorption tower. The heat exchanger, the gas-liquid separation unit, and the adsorption tower are connected in sequence by pipelines so that the crude hydrogen after heat exchange is purified into hydrogen gas after gas-liquid separation and adsorption to remove impurities.

7. The hydrogen production apparatus from methanol water as claimed in claim 6, wherein, The gas-liquid separation unit includes a cooler and a gas-liquid separator. The heat exchanger, the cooler, the gas-liquid separator, and the adsorption tower are connected in sequence by pipelines so that the crude hydrogen after heat exchange is cooled before gas-liquid separation.

8. The methanol water hydrogen production apparatus according to any one of claims 1 to 5, wherein The mixing station includes a methanol tank, a pure water tank, and a mixing tank. The methanol tank is used to hold methanol, and the pure water tank is used to hold pure water. The methanol tank and the pure water tank are respectively connected to the mixing tank via pipelines, so that methanol and pure water flow to the mixing tank to form a methanol-water mixture.

9. The methanol water hydrogen production apparatus according to any one of claims 1 to 5, wherein The methanol-water hydrogen production equipment also includes a control cabinet. The mixing station, the electric heating device, the reactor, and the purification device are respectively connected to the control cabinet so that the control cabinet controls the electric heating of the methanol-water mixture to react and generate crude hydrogen, thereby purifying hydrogen gas.

10. The hydrogen production apparatus from methanol water as claimed in claim 9, wherein, The control cabinet has an explosion-proof enclosure. The explosion-proof enclosure, the mixing station, the electric heating device, the reactor, and the purification device are spaced apart on a support. The explosion-proof enclosure is filled with inert gas.