Photocatalytic hydrogen production reaction device and photocatalytic hydrogen production method thereof

Abstract

The embodiment of the invention relates to a photocatalytic hydrogen production reaction device and a photocatalytic hydrogen production method thereof, and belongs to the technical field of new energy photocatalytic hydrogen production. The photocatalytic hydrogen production reaction device comprises a photocatalytic hydrogen production reactor, a light source is arranged at the outer bottom of the photocatalytic hydrogen production reactor, a metal condensation plate is arranged in the photocatalytic hydrogen production reactor, and the metal condensation plate is located on the upper middle portion in the photocatalytic hydrogen production reactor and fixedly connected with the inner wall of the photocatalytic hydrogen production reactor. According to the photocatalytic hydrogen production reaction device provided by the embodiment of the invention, the photocatalytic hydrogen production reactor, efficient utilization of light emitted by the light source and timely recycling of volatile reaction liquid are integrated, and the whole device is simple in structure, convenient to process and use and beneficial to popularization and application of the photocatalytic hydrogen production technology.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of new energy photocatalytic hydrogen production, and in particular, to a photocatalytic hydrogen production reaction device and a photocatalytic hydrogen production method. Background Art

[0002] Photocatalytic hydrogen production technology can directly convert solar energy into hydrogen energy. This technology uses photocatalysts to stimulate electrons to jump from the valence band to the conduction band under light irradiation, forming photogenerated electron-hole pairs, which in turn trigger the redox reaction of water to generate hydrogen and oxygen. As a clean and renewable energy source, hydrogen energy has the advantages of high calorific value, easy storage and transmission, and is expected to replace traditional fossil fuels in the future and become an important energy source to promote sustainable social development.

[0003] The full absorption and utilization of incident light is not only the core factor in improving the energy conversion efficiency of photocatalytic hydrogen production technology, but also directly related to the cost of the produced hydrogen and the promotion and application of this technology. In the existing technology, the main focus is on photocatalysts, that is, the development of photocatalysts with higher light absorption efficiency and wider light absorption range. However, in addition to the research and development of photocatalysts, reactor design is also the key to improving the utilization rate of light energy. By optimizing the structure of the reactor, the configuration of the light source, etc., the efficiency and economy of photocatalytic hydrogen production can be further improved.

[0004] The photocatalytic hydrogen production process is carried out in the reaction device. Since the photocatalytic hydrogen production technology involves multidisciplinary intersections, the design and optimization of the hydrogen production reaction device requires the comprehensive application of knowledge in multiple fields such as materials science, chemistry, and optics. Therefore, the development of efficient and stable photocatalytic hydrogen production reaction devices is of far-reaching significance for promoting the development of the hydrogen energy economy and realizing the green transformation of the energy structure. In recent years, the research and development of photocatalytic hydrogen production reaction devices has made significant progress, and a variety of new reactors have been designed, such as suspension reactors, fixed bed reactors, photocatalytic membrane reactors, reactors using concentrators, etc. These reactors have their own characteristics and effectively improve the efficiency and stability of photocatalytic hydrogen production. However, there are still the following problems to be solved: First, the utilization rate of light energy is low; second, the current photocatalytic hydrogen production reaction devices are mostly complex systems, containing multiple parts and components, which increases the complexity and maintenance difficulty of the system; third, the high cost of high-performance photocatalysts and optical components such as concentrators limits the commercial application of photocatalytic hydrogen production technology. Therefore, it is necessary to further strengthen the research and development of photocatalytic hydrogen production reaction devices to promote the continuous advancement and commercial application of photocatalytic hydrogen production technology. Summary of the invention

[0005] In view of this, the embodiment of the present application provides a photocatalytic hydrogen production reaction device and a photocatalytic hydrogen production method, which integrates the photocatalytic hydrogen production reactor, the efficient utilization of light emitted by the light source, and the timely recovery and utilization of the volatilized reaction liquid. The entire device has a simple structure, is easy to process, and is easy to use, which is conducive to the promotion and application of photocatalytic hydrogen production technology to solve the technical problems raised by the background technology.

[0006] A first aspect of an embodiment of the present application provides a photocatalytic hydrogen production reaction device, including a photocatalytic hydrogen production reactor, wherein a light source is disposed at the outer bottom of the photocatalytic hydrogen production reactor, and a metal condensation plate is disposed inside the photocatalytic hydrogen production reactor.

[0007] In some embodiments that may include the above embodiments, the photocatalytic hydrogen production reactor is formed by a quartz glass bottom plate on the bottom, a metal side plate on the side, and an upper metal panel on the top, and a cavity is formed inside the reactor for holding a hydrogen-containing reaction liquid, and the inner wall of the metal side plate is set to a smooth surface;

[0008] The quartz glass bottom plate is arranged above the light source, and a photocatalyst is arranged on the quartz glass bottom plate. The photocatalyst is immersed in the hydrogen-containing reaction liquid, and the metal condensation plate is located above the liquid surface of the hydrogen-containing reaction liquid.

[0009] In some embodiments that may include the above embodiments, a liquid inlet is provided on the metal side plate and located above the liquid surface of the hydrogen-containing reaction liquid, and the liquid inlet is located below the metal condensation plate, and the liquid inlet is used for the inflow of liquid;

[0010] A liquid outlet is provided on the metal side plate and close to the quartz glass bottom plate, the liquid outlet is located below the liquid inlet, and the liquid outlet is used for the outflow of liquid;

[0011] The upper metal panel is provided with a hydrogen outlet.

[0012] In some embodiments that may include the above embodiments, the metal condensation plate includes at least two metal thin plates, which are located above the liquid level of the hydrogen-containing reaction liquid and close to the upper metal panel, and the lowest metal thin plate in the metal condensation plate is set to a smooth surface facing the plate surface of the hydrogen-containing reaction liquid.

[0013] In some embodiments that may include the above-mentioned embodiments, a circulating water inlet and outlet are provided on the metal side plate, and the circulating water inlet and outlet are located above the liquid inlet. The circulating water inlet and outlet are connected to one end of the metal sheet that is fixed, and the circulating water inlet and outlet transports the condensed circulating water to the metal sheet. A reaction liquid condensation lower port is provided below one end of the metal sheet that is fixed and is located in the photocatalytic hydrogen production reactor and is the lowest of the metal condensation plates.

[0014] In some embodiments that may include the above embodiments, one end of the metal sheet is fixedly connected to the inner wall of the metal side plate, the other end of the metal sheet is suspended, and the metal sheet is inclined and forms an angle of 10-80 degrees with the horizontal plane.

[0015] A second aspect of the embodiment of the present application further provides a photocatalytic hydrogen production method based on the above-mentioned photocatalytic hydrogen production reaction device, comprising the following steps:

[0016] A photocatalyst and a hydrogen-containing reaction liquid are added to a photocatalytic hydrogen production reactor, and the photocatalyst is immersed in the hydrogen-containing reaction liquid. Light emitted by a light source passes through a quartz glass bottom plate at the bottom of the photocatalytic hydrogen production reactor and is absorbed by the photocatalyst for photocatalytic hydrogen production reaction. Hydrogen generated by photocatalysis is collected through a hydrogen outlet.

[0017] In some embodiments that may include the above-mentioned embodiments, light that is not absorbed by the photocatalyst in the photocatalytic hydrogen production reactor is reflected by the smooth inner surface of the metal side plate and the smooth inner surface of the lowest metal sheet in the metal condensation plate, and is absorbed by the photocatalyst for photocatalytic hydrogen production reaction.

[0018] In some embodiments that may include the above embodiments, the hydrogen-containing reaction liquid evaporated in the photocatalytic hydrogen production reactor during the hydrogen production reaction is promptly condensed into liquid by the metal condensation plate and flows into the reaction liquid to be reused.

[0019] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0020] (1) Efficient use of light energy: The present application breaks through the design concept of conventional photocatalytic reactors and adopts a mirror-like smooth inner surface on the metal side plate of the photocatalytic hydrogen production reactor and the inner side of the metal thin plate on the top of the reaction liquid. When hydrogen is produced by photocatalytic reaction, most of the light emitted by the light source is absorbed by the photocatalyst in the photocatalytic hydrogen production reactor for hydrogen production reaction, while the light that is not absorbed is reflected by the smooth inner surface of the metal side plate and the smooth inner surface of the metal thin plate on the top of the hydrogen-containing reaction liquid, and continues to participate in the photocatalytic hydrogen production reaction, thereby greatly improving the utilization rate of light.

[0021] (2) Realizing timely condensation, recovery and reuse of the volatilized hydrogen-containing reaction liquid: In the process of photocatalytic hydrogen production reaction of the present application, the volatilized hydrogen-containing reaction liquid is timely condensed into liquid by the metal condensation plate and flows into the reaction liquid for reuse, which not only improves the utilization rate of the hydrogen-containing reaction liquid, but also greatly reduces the humidity of the prepared hydrogen, thereby reducing the subsequent drying treatment cost.

[0022] (3) Expanding the scale of hydrogen production: This application integrates a photocatalytic hydrogen production reactor, efficient use of light emitted by a light source, and timely recovery and utilization of volatilized reaction liquid. The entire device has a simple structure, is easy to process, and is convenient to use, which is conducive to the promotion and application of photocatalytic hydrogen production technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic structural diagram of a photocatalytic hydrogen production reaction device according to an embodiment of the present application;

[0025] Figure 2 This is a schematic structural diagram of a metal condensation plate according to an embodiment of the present application;

[0026] Figure 3 This is a schematic diagram of an embodiment of the present application in which unabsorbed light is reflected and reused through the inner wall of the reactor.

[0027] Description of reference numerals:

[0028] 1. Photocatalytic hydrogen production reactor; 101. Quartz glass bottom plate; 102. Metal side plate; 103. Upper metal panel; 104. Liquid inlet; 105. Liquid outlet; 106. Hydrogen outlet; 107. Photocatalyst; 108. Hydrogen-containing reaction liquid; 2. Light source; 3. Metal condensation plate; 301. Metal thin plate; 302. Condensation circulating water; 303. Circulating water inlet and outlet; 304. Reaction liquid condensation lower outlet. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0031] Secondly, it should be noted that in the description of the present application, terms such as "up", "down", "left", "right", "front", "back", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present application.

[0032] The current reactor designs in related technologies often have the following problems: first, the utilization rate of light energy is low; second, the current photocatalytic hydrogen production reaction devices are mostly complex systems, containing multiple parts and components, which increase the complexity of the system and the difficulty of maintenance; third, the cost of high-performance photocatalysts and optical components such as concentrators is high, which limits the commercial application of photocatalytic hydrogen production technology.

[0033] In order to solve the above technical problems, Figure 1 As shown, an embodiment of the present application provides a photocatalytic hydrogen production reaction device, including a photocatalytic hydrogen production reactor 1, a light source 2 is arranged at the outer bottom of the photocatalytic hydrogen production reactor 1, a metal condensation plate 3 is arranged inside the photocatalytic hydrogen production reactor 1, and the metal condensation plate 3 is located in the upper middle part of the photocatalytic hydrogen production reactor 1 and is fixedly connected to the inner wall of the photocatalytic hydrogen production reactor 1.

[0034] In a specific embodiment, the light source 2 is set as an LED light source and is evenly distributed below the photocatalytic hydrogen production reactor 1. The number of LED lights, the power size and the density of the arrangement are set according to actual needs to ensure that the light emitted by them can be evenly and quickly absorbed. The metal condensation plate 3 can be fixed to the inner wall of the photocatalytic hydrogen production reactor 1 by threaded connection or welding. Other methods that can achieve fixed connection are also applicable to the embodiments of the present application and are not limited here.

[0035] Further, refer to Figure 2 and Figure 3 The photocatalytic hydrogen production reactor 1 is formed by a quartz glass bottom plate 101 on the bottom, a metal side plate 102 on the side and an upper metal panel 103 on the top, and a cavity is formed inside it for holding a hydrogen-containing reaction liquid 108. The inner wall of the metal side plate 102 is set to a smooth surface.

[0036] In a specific embodiment, the quartz glass bottom plate 101 and the upper metal panel 103 are arranged opposite to each other, serving as the bottom and the top respectively, and the quartz glass bottom plate 101 and the upper metal panel 103 are fixedly connected to the metal side plate 102 respectively, and the specific fixing method is not limited, for example, it can be fixedly connected by threaded connection or welding. In addition, the material of the quartz glass bottom plate 101 is quartz glass, and the material of the metal side plate 102 and the upper metal panel 103 are both metal, for example, aluminum alloy or stainless steel, which is not limited in this application.

[0037] The quartz glass bottom plate 101 is disposed above the light source 2 , and a photocatalyst 107 is disposed on the quartz glass bottom plate 101 . The photocatalyst 107 is immersed in the hydrogen-containing reaction liquid 108 , and the metal condensation plate 3 is located above the liquid surface of the hydrogen-containing reaction liquid 108 .

[0038] In a specific embodiment, the photocatalyst 107 can be a titanium dioxide photocatalyst or a g-C3N4 photocatalyst, and the hydrogen-containing reaction liquid 108 can be water or methanol or a mixture of the two. Other photocatalysts and hydrogen-containing reaction liquids that can achieve photocatalytic hydrogen production are also applicable to the embodiments of the present application, without limitation.

[0039] Specifically, a liquid inlet 104 is provided on the metal side plate 102 and is located above the liquid surface of the hydrogen-containing reaction liquid 108, and the liquid inlet 104 is located below the metal condensation plate 3, and the liquid inlet 104 is used for the inflow of liquid; a liquid outlet 105 is provided on the metal side plate 102 and is close to the quartz glass bottom plate 101, and the liquid outlet 105 is located below the liquid inlet 104, and the liquid outlet 105 is used for the outflow of liquid; a hydrogen outlet 106 is provided on the upper metal panel 103.

[0040] Further, refer to Figure 2 and Figure 3 The metal condensation plate 3 includes at least two metal thin plates 301, the metal thin plates 301 are located above the liquid level of the hydrogen-containing reaction liquid 108 and close to the upper metal panel 103, the plate surface of the lowest metal thin plate 301 in the metal condensation plate 3 facing the hydrogen-containing reaction liquid 108 is set to a smooth surface, one end of the metal thin plate 301 is fixedly connected to the inner wall of the metal side plate 102, and the other end of the metal thin plate 301 is suspended, and the metal thin plate 301 is inclined and forms an angle of 10-80 degrees with the horizontal plane.

[0041] In a specific embodiment, one end of the metal sheet 301 is fixed to the inner wall of the metal side plate 102 by means of a threaded connection. The metal sheet 301 is tilted and forms an angle of 45 degrees with the horizontal plane. Other inclinations can be selected according to actual needs, and this embodiment of the present application does not limit this.

[0042] Specifically, a circulating water inlet and outlet 303 is provided on the metal side plate 102, and the circulating water inlet and outlet 303 is located above the liquid inlet 104. The circulating water inlet and outlet 303 is connected to the fixed end of the metal sheet 301. The circulating water inlet and outlet 303 transports the condensed circulating water 302 to the metal sheet 301. A reaction liquid condensation lower port 304 is provided below the fixed end of the metal sheet 301 which is located in the photocatalytic hydrogen production reactor 1 and is the lowest among the metal condensation plates 3.

[0043] It should be noted that a conventional water pipe (not shown in the figure) for the circulation of condensed circulating water 302 is correspondingly arranged on the metal sheet 301. The condensed circulating water 302 is transported from the circulating water inlet and outlet 303 to the circulating water inlet and outlet 303 through the metal sheet 301 through the conventional water pipe. The conventional water pipe can be a conventional PVC pipe or copper pipe, which is not limited in the present application. The metal sheet 301 can be a single-layer thin plate, and the conventional water pipe is laid on the upper surface of the metal sheet 301. The metal sheet 301 can also be a hollow thin plate, and the conventional water pipe is laid on the lower surface of the hollow metal sheet 301, which is not limited in the present application. Conventional water pipes are laid along the slope of the metal sheet 301 from top to bottom and may be in a zigzag shape, which is not limited in the present application, until the circulating water inlet and outlet 303 of the bottommost metal sheet 301 (i.e., the same conventional water pipe connects the circulating water inlet and outlet 303 of two adjacent metal sheets 301, which is used to respond to the above-described condensed circulating water 302 being transported from the circulating water inlet and outlet 303 through the metal sheet 301 to the circulating water inlet and outlet 303 of the adjacent metal sheet 301 through the conventional water pipe). The connection between the conventional water pipe and the metal sheet 301 adopts a suitable connection method, such as clip fixation, etc., which is not limited in the present application. During the photocatalytic hydrogen production reaction, the volatilized reaction liquid vapor of the hydrogen-containing reaction liquid 108 is blocked by the metal sheet 301 with a lower temperature through which the condensation circulating water 302 is passed, and the reaction liquid vapor is cooled and turned into droplets, among which the reaction liquid droplets cooled by the bottom metal sheet 301 are directly dripped into the hydrogen-containing reaction liquid 108 to be reused; the uncondensed reaction liquid vapor passes through the gaps between the multiple layers of metal sheets 301 and enters the second, third and even top metal sheets 301 from bottom to top. After the reaction liquid vapor is cooled by each layer of metal sheets 301 from bottom to top, the cooling droplets flow along the slope of each layer of metal sheets 301 to the next layer of metal sheets 301, and finally reach the bottom metal sheet 301, and drip into the hydrogen-containing reaction liquid 108 through the reaction liquid condensation lower port 304 to participate in the photocatalytic reaction again. After the above-mentioned circulating water condensation process, not only the hydrogen-containing reaction liquid 108 is fully utilized, but also the humidity collected from the hydrogen outlet 106 is greatly reduced and the purity of the hydrogen is greatly improved, thereby effectively reducing the subsequent drying cost of the produced hydrogen.

[0044] refer to Figure 3The principle of photocatalytic hydrogen production using the above-mentioned photocatalytic hydrogen production device is as follows:

[0045] A photocatalyst 107 and a hydrogen-containing reaction liquid 108 are added to the photocatalytic hydrogen production reactor 1, and the photocatalyst 107 is immersed in the hydrogen-containing reaction liquid 108. The light emitted by the light source 2 is transmitted through the quartz glass bottom plate 101 at the bottom of the photocatalytic hydrogen production reactor 1 and is absorbed by the photocatalyst 107 to carry out the photocatalytic hydrogen production reaction. The light not absorbed by the photocatalyst 107 in the photocatalytic hydrogen production reactor 1 is reflected by the smooth inner surface of the metal side plate 102 and the smooth inner surface of the lowest metal sheet 301 in the metal condensation plate 3, and is absorbed by the photocatalyst 107 again for the photocatalytic hydrogen production reaction. The hydrogen-containing reaction liquid 108 evaporated in the photocatalytic hydrogen production reactor 1 during the hydrogen production reaction is promptly condensed into liquid by the metal condensation plate 3 and reused. The hydrogen generated by photocatalysis is collected through the hydrogen outlet 106.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A photocatalytic hydrogen production reaction device, characterized in that: It comprises a photocatalytic hydrogen production reactor (1), wherein a light source (2) is arranged at the outer bottom of the photocatalytic hydrogen production reactor (1), and a metal condensation plate (3) is arranged inside the photocatalytic hydrogen production reactor (1).

2. The photocatalytic hydrogen production reaction device according to claim 1, characterized in that: The photocatalytic hydrogen production reactor (1) is formed by a quartz glass bottom plate (101) on the bottom, a metal side plate (102) on the side, and an upper metal panel (103) on the top, which are fixedly connected, and a receiving cavity is formed inside the reactor for containing a hydrogen-containing reaction liquid (108), and the inner wall of the metal side plate (102) is set to a smooth surface; The quartz glass bottom plate (101) is arranged above the light source (2), and a photocatalyst (107) is arranged on the quartz glass bottom plate (101), the photocatalyst (107) is immersed in the hydrogen-containing reaction liquid (108), and the metal condensation plate (3) is located above the liquid surface of the hydrogen-containing reaction liquid (108).

3. The photocatalytic hydrogen production reaction device according to claim 2, characterized in that: A liquid inlet (104) is provided on the metal side plate (102) and is located above the liquid surface of the hydrogen-containing reaction liquid (108), and the liquid inlet (104) is located below the metal condensation plate (3), and the liquid inlet (104) is used for the inflow of liquid; A liquid outlet (105) is provided on the metal side plate (102) and close to the quartz glass bottom plate (101), the liquid outlet (105) is located below the liquid inlet (104), and the liquid outlet (105) is used for the outflow of liquid; The upper metal panel (103) is provided with a hydrogen outlet (106).

4. The photocatalytic hydrogen production reaction device according to claim 3, characterized in that: The metal condensation plate (3) comprises at least two metal thin plates (301), wherein the metal thin plates (301) are located above the liquid surface of the hydrogen-containing reaction liquid (108) and close to the upper metal panel (103), and the plate surface of the lowest metal thin plate (301) in the metal condensation plate (3) facing the hydrogen-containing reaction liquid (108) is set to a smooth surface.

5. The photocatalytic hydrogen production reaction device according to claim 4, characterized in that: The metal side plate (102) is provided with a circulating water inlet and outlet (303), and the circulating water inlet and outlet (303) is located above the liquid inlet (104). The circulating water inlet and outlet (303) is connected to one end of the metal sheet (301) that is fixed. The circulating water inlet and outlet (303) transports the condensed circulating water (302) to the metal sheet (301). A reaction liquid condensation lower port (304) is provided below one end of the metal sheet (301) that is located in the photocatalytic hydrogen production reactor (1) and is the lowest in the metal condensation plate (3).

6. The photocatalytic hydrogen production reaction device according to claim 4, characterized in that: One end of the metal sheet (301) is fixedly connected to the inner wall of the metal side plate (102), and the other end of the metal sheet (301) is suspended in the air. The metal sheet (301) is tilted and forms an angle of 10-80 degrees with the horizontal plane.

7. A photocatalytic hydrogen production method based on the photocatalytic hydrogen production reaction device according to any one of claims 2 to 6, characterized in that: The following steps are involved: A photocatalyst (107) and a hydrogen-containing reaction liquid (108) are added to a photocatalytic hydrogen production reactor (1), and the photocatalyst (107) is immersed in the hydrogen-containing reaction liquid (108). Light emitted by a light source (2) passes through a quartz glass bottom plate (101) at the bottom of the photocatalytic hydrogen production reactor (1) and is absorbed by the photocatalyst (107) for a photocatalytic hydrogen production reaction. Hydrogen generated by the photocatalysis is collected through a hydrogen outlet (106).

8. The photocatalytic hydrogen production method according to claim 7, characterized in that: Light in the photocatalytic hydrogen production reactor (1) that is not absorbed by the photocatalyst (107) is reflected by the smooth inner surface of the metal side plate (102) and the smooth inner surface of the lowest metal sheet (301) in the metal condensation plate (3), and is absorbed by the photocatalyst (107) for photocatalytic hydrogen production reaction.

9. The photocatalytic hydrogen production method according to claim 7, characterized in that: The hydrogen-containing reaction liquid (108) evaporated during the hydrogen production reaction of the photocatalytic hydrogen production reactor (1) is promptly condensed into liquid by the metal condensation plate (3) and flows into the reaction liquid to be reused.

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