Hydrogen Production System

Abstract

To provide a hydrogen production system that can improve the production cost of hydrogen.SOLUTION: A hydrogen production system comprises a hydrogen compound component slurry in which a hydrogen compound component is suspended in a solvent containing water, a first container, a second container whose internal temperature is higher than an internal temperature of the first container, a first route connecting the first container and the second container, and a second route connecting the first container and the second container, which is different from the first route, and is configured such that the hydrogen compound component slurry contained in the first container can be moved into the second container through the first route and that the hydrogen compound component slurry contained in the second container can be moved into the first container through the second route.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a hydrogen production system. [Background technology]

[0002] Patent Document 1 describes a two-dimensional boron hydride sheet that releases hydrogen when heated to 150 to 200° C. Hydrogen is highly reactive and explosive, so Patent Document 1 describes a method for easily generating hydrogen even at room temperature by irradiating the two-dimensional boron hydride sheet with light. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-218251 Summary of the Invention [Problem to be solved by the invention]

[0004] In order to properly recover the hydrogen released from the two-dimensional boron hydride sheet, whether by heating or light irradiation, it is necessary to release the hydrogen from the two-dimensional boron hydride sheet contained in a sealed container and then allow the released hydrogen to flow out of the container. However, when releasing hydrogen by heating, not only the two-dimensional boron hydride sheet but also the container is heated, which requires an extra amount of heat equivalent to the heat capacity of the container during heating, resulting in reduced thermal efficiency and increased costs for hydrogen production.

[0005] In view of the above, an object of at least one embodiment of the present disclosure is to provide a hydrogen production system that can improve the cost of producing hydrogen. [Means for solving the problem]

[0006] In order to achieve the above object, the hydrogen production system according to the present disclosure includes a hydrogen compound material slurry in which a hydrogen compound material is suspended in a solvent containing water, a first container, a second container having an internal temperature higher than that of the first container, a first path connecting the first container and the second container, and a second path connecting the first container and the second container and different from the first path. a first temperature adjusting device for adjusting the temperature of the hydrogen compound material slurry in the first container; and a second temperature adjusting device for adjusting the temperature of the hydrogen compound material slurry in the second container. Equipped with The hydrogen compound member has a configuration in which a powder containing a two-dimensional array of hydrogen compounds represented by a chemical formula XmHn is supported on a particulate carrier, where X is an element other than hydrogen, and the stoichiometric ratio m:n is 1:1 to 3:4, and the element X is boron; The hydrogen compound material slurry contained in the first container is configured to be movable into the second container via the first path, and the hydrogen compound material slurry contained in the second container is configured to be movable into the first container via the second path. [Effects of the Invention]

[0007] According to the hydrogen production system of the present disclosure, hydrogen can be produced by transferring a hydrogen compound material slurry containing hydrogen compound materials that have stored hydrogen in a first container into a second container that has a higher temperature than the first container, releasing hydrogen from the hydrogen compound materials in the second container, and transferring the hydrogen compound material slurry containing the hydrogen compound materials that have released hydrogen back into the first container to store hydrogen again. This operation only requires changing the temperature of the hydrogen compound material slurry, and temperature changes in the first and second containers that store the hydrogen compound material slurry can be minimized as much as possible, thereby improving thermal efficiency and, as a result, reducing hydrogen production costs. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic diagram illustrating the configuration of a hydrogen production system according to a first embodiment of the present disclosure. [Figure 2] FIG. 1 is a schematic diagram illustrating the configuration of a hydrogen production system according to a second embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, a hydrogen production system according to an embodiment of the present disclosure will be described with reference to the drawings. The embodiment described below shows one aspect of the present disclosure, and is not intended to limit the present disclosure. The present disclosure can be modified as desired within the scope of the technical concept of the present disclosure.

[0010] (Embodiment 1) <Configuration of hydrogen production system according to embodiment 1 of the present disclosure> As shown in Fig. 1, a hydrogen production system 1 according to a first embodiment of the present disclosure includes a first container 2 and a second container 3. The first container 2 and the second container 3 are each configured to accommodate a hydrogen compound component slurry 4 in which a hydrogen compound component is suspended in a solvent containing water. The first container 2 and the second container 3 are connected via two different paths, i.e., a first path 5 and a second path 6. Here, the water-containing solvent is not limited to a solvent containing only water, but may also be a solvent in which water is mixed with an organic solvent, such as acetonitrile or acetone.

[0011] Hydrogen compound materials have the chemical formula X, where X is an element other than hydrogen (H). m H n The powder material contains a two-dimensional arrangement of hydrogen compounds represented by the formula (I) and is supported on a particulate carrier, such as beads. The stoichiometric ratio m:n is 1:1 to 3:4 (e.g., XH, XH2, XH3, XH4, X2H3, X3H4). The element X is, for example, boron (B), although this is not a limitation.

[0012] In the hydrogen production system 1, the temperature inside the second container 3, i.e., the temperature of the hydrogen compound material slurry 4 contained in the second container 3, is maintained higher than the temperature inside the first container 2, i.e., the temperature of the hydrogen compound material slurry 4 contained in the first container 2. To maintain this temperature relationship, a first temperature controller 11 may be provided inside the first container 2, and a second temperature controller 12 may be provided inside the second container 3. The configurations of the first temperature controller 11 and the second temperature controller 12 are not particularly limited, and may be, for example, coiled piping through which a heat medium for heat exchange with the hydrogen compound material slurry 4 can flow. The temperature range of the former is preferably 20°C to 150°C, and the temperature range of the latter is preferably 150°C to 250°C. To maintain water in a liquid state within these temperature ranges, the pressure inside each of the first container 2 and the second container 3 is pressurized to at least atmospheric pressure or higher (e.g., 4 MPaG).

[0013] As will be described in detail later in the description of the operation, the hydrogen compound material slurry 4 in the first container 2 is transferred to the second container 3 via the first path 5, and the composite material slurry 4 in the second container 3 is transferred to the first container 2 via the second path 6. To achieve this operation, as an example, a first pump 13 and a second pump 14 may be provided on the first path 5 and the second path 6, respectively. The first pump 13 and the second pump 14 can forcibly circulate the hydrogen compound material slurry 4 between the first container 2 and the second container 3.

[0014] In addition, a heat exchanger 15 may be provided to exchange heat between the hydrogen compound component slurry 4 flowing through the first path 5 and the hydrogen compound component slurry 4 flowing through the second path 6 while the hydrogen compound component slurry 4 is circulated between the first container 2 and the second container 3.

[0015] The first container 2 and the second container 3 may be provided with agitators 16 and 17, respectively, for agitating the hydrogen compound material slurry 4 contained therein. When the hydrogen compound material slurry 4 circulates between the first container 2 and the second container 3, if there is no stagnation in the flow of the hydrogen compound material slurry 4, hydrogen compound materials will not precipitate from the hydrogen compound material slurry 4. However, in practice, it is difficult to completely prevent the precipitation of hydrogen compound materials. In contrast, if the first container 2 and the second container 3 are provided with agitators 16 and 17, respectively, and the hydrogen compound material slurry 4 in the first container 2 and the second container 3 is sufficiently agitated, the precipitation of hydrogen compound materials from the hydrogen compound material slurry 4 can be suppressed. Furthermore, stirring the hydrogen compound material slurry 4 can also improve the efficiency of temperature adjustment of the hydrogen compound material slurry 4 by the first temperature adjustment device 11 and the second temperature adjustment device 12.

[0016] As will be explained in detail in the description of the operation below, oxygen is generated when hydrogen is stored in the hydrogen compound member in the first container 2. One end of an outflow path 21 may be connected to the first container 2 in order to discharge the generated oxygen from the first container 2. The outflow path 21 may be provided with a separator 22 that separates the fluid flowing through the outflow path 21 into water and oxygen. The separator 22 may be a cooler, a separation membrane device, or the like. When the separator 22 is a cooler, a reflux tank 23 may be provided downstream of the separator 22 in the outflow path 21. In order to return the water separated by the separator 22 to the first container 2, a water return path 24 may be provided having one end connected to the separator 22 or the reflux tank 23 and the other end connected to the first container 2.

[0017] As will be explained in detail in the description of the operation below, hydrogen is released from the hydrogen compound material in the second container 3. One end of an outflow path 31 may be connected to the second container 3 in order to discharge the released hydrogen from the second container 3. The outflow path 31 may be provided with a separator 32 that separates the fluid flowing through the outflow path 31 into water and hydrogen. The separator 32 may be a cooler, a separation membrane device, or the like. When the separator 32 is a cooler, a reflux tank 33 may be provided downstream of the separator 32 in the outflow path 31. In order to return the water separated by the separator 32 to the second container 3, a water return path 34 may be provided having one end connected to the separator 32 or the reflux tank 33 and the other end connected to the second container 3.

[0018] As will be described in detail later in the description of the operation, while hydrogen is produced in the hydrogen production system 1, water in the hydrogen compound material slurry 4 is consumed. A water supply device 25 may be provided to replenish the consumed water in the hydrogen production system 1 so that hydrogen can be produced continuously. Water may be supplied to either the first container 2 or the second container 3, but from the viewpoint of thermal efficiency, it is preferable to supply water to the first container 2, whose internal temperature is low. The specific configuration of the water supply device 25 is not particularly limited, and for example, the water supply device 25 may include a water supply path 27 having one end connected to a water supply source 26 such as a water line or a water tank and the other end connected to the first container 2, and a pump 28 provided in the water supply path 27.

[0019] The hydrogen compound materials cannot be used forever and deteriorate during hydrogen production. For this reason, a hydrogen compound material supply device 41 for supplying hydrogen compound materials into the first container 2 and a discharge device 51 for discharging the hydrogen compound material slurry 4 in the second container 3 may be provided. This allows deteriorated hydrogen compound materials to be removed from the hydrogen production system 1 and new hydrogen compound materials to be supplied to the hydrogen production system 1, making it possible to produce hydrogen continuously.

[0020] The specific configuration of the hydrogen compound material supply device 41 is not particularly limited, but may include, for example, a slurry tank 42 serving as a storage member for storing a hydrogen compound material slurry 4′ containing new hydrogen compound materials, a slurry supply path 43 connecting the slurry tank 42 with the first container 2, and a supply pump 44 provided on the slurry supply path 43. The slurry supply path 43 may be directly connected to the first container 2, or a confluence path 45 merging with the water supply path 27 may be connected to the first container 2. In the latter embodiment, a three-way valve 46 for switching between the supply of water from the water supply source 26 and the supply of the hydrogen compound material slurry 4′ from the slurry tank 42 may be provided at the confluence of the water supply path 27 and the slurry supply path 43.

[0021] The hydrogen compound material supply device 41 may be configured to supply new hydrogen compound materials into the first container 2 or the water supply path 27 in particulate form rather than in the form of a slurry. However, if particulate hydrogen compound materials are directly supplied into the first container 2, there is a risk that the supplied hydrogen compound materials may agglomerate. In contrast, if new hydrogen compound materials are supplied in the form of a slurry, the risk of the hydrogen compound materials agglomerating can be reduced.

[0022] The specific configuration of the discharge device 51 is not particularly limited, but may be configured to include, for example, a discharge path 52 having one end connected to the second container 3 and a valve 53 provided on the discharge path 52. The discharge device 51 may also include a solid-liquid separator 54 that separates the hydrogen compound component slurry 4 into solid and liquid. The specific configuration of the solid-liquid separator 54 is not particularly limited, but the solid-liquid separator 54 may be, for example, a filter.

[0023] <Operation of the hydrogen production system according to the first embodiment of the present disclosure> Next, the operation of the hydrogen production system 1 according to the first embodiment of the present disclosure will be described. A hydrogen compound material slurry 4 is contained in each of the first container 2 and the second container 3. For example, the first temperature controller 11 and the second temperature controller 12 maintain the temperature of the hydrogen compound material slurry 4 in the first container 2 in the range of 100°C to 150°C, and the temperature of the hydrogen compound material slurry 4 in the second container 3 in the range of 200°C to 250°C. When the temperature of the hydrogen compound material slurry 4 in the first container 2 falls within the above range, water decomposes into hydrogen and oxygen in the presence of the hydrogen compound material, and the hydrogen is occluded by the hydrogen compound material. This causes the hydrogen compound material to store hydrogen. The oxygen flows out of the first container 2 and flows through the outflow path 21, where it is separated into water and oxygen by the separator 22. The water is returned to the first container 2 via the water return path 24, and the oxygen is supplied to a storage facility or oxygen-consuming facility (not shown). In the first embodiment, the hydrogen compound material is suspended in water to form a slurry, which ensures good contact between the water and the hydrogen compound material. In contrast, in a configuration in which water or steam is supplied to the hydrogen compound material, the flow path for the water or steam may become fixed, resulting in a portion of the hydrogen compound material that does not come into contact with water or steam. Therefore, by using the hydrogen compound material slurry 4, hydrogen can be absorbed into the hydrogen compound material more efficiently than in a configuration in which water or steam is supplied to the hydrogen compound material.

[0024] For example, when the first pump 13 causes the hydrogen compound material slurry 4 containing hydrogen-storing hydrogen compound material to flow into the second container 3 via the first path 5, the temperature rises to a range of 200°C to 250°C. When the hydrogen compound material that stores hydrogen reaches this temperature range, hydrogen is released from the hydrogen compound material. The hydrogen flows out of the second container 3 and flows through the outflow path 31, and is separated into water and oxygen by the separator 32. The water is returned to the second container 3 via the water return path 34, and the hydrogen is supplied to a storage facility or a hydrogen-consuming facility (not shown).

[0025] For example, when the hydrogen compound material slurry 4 containing the hydrogen compound material that has released hydrogen flows into the first container 2 through the second path 6 by the second pump 14, the temperature of the slurry 4 rises to a range of 100°C to 150°C. Decline When the hydrogen compound material that has released hydrogen falls within this temperature range, the hydrogen is absorbed into the hydrogen compound material by the above-mentioned operation. By circulating the hydrogen compound material slurry 4 between the first container 2 and the second container 3, which are at different temperatures, the hydrogen compound material in the first container 2 stores hydrogen, and hydrogen is released from the hydrogen compound material in the second container 3, and the hydrogen production system 1 produces hydrogen.

[0026] The hydrogen production system 1 can produce hydrogen by transferring the hydrogen compound material slurry 4 containing hydrogen compound materials that have stored hydrogen in the first container 2 into the second container 3, which has a higher temperature than the first container 2, releasing hydrogen from the hydrogen compound materials in the second container 3, and transferring the hydrogen compound material slurry 4 containing the hydrogen compound materials that have released hydrogen back into the first container 2, thereby storing hydrogen in the hydrogen compound materials again. With this operation, it is only necessary to increase or decrease the temperature of the hydrogen compound material slurry 4, and temperature changes in the first container 2 and the second container 3 that store the hydrogen compound material slurry 4 can be suppressed as much as possible, thereby improving thermal efficiency and, as a result, reducing the cost of hydrogen production.

[0027] When the hydrogen production system 1 is provided with the heat exchanger 15, the hydrogen compound material slurry 4 transferred from the first container 2 to the second container 3 is heated, while the hydrogen compound material slurry 4 transferred from the second container 3 to the first container 2 is cooled, thereby reducing the load on the first temperature adjustment device 11 and the second temperature adjustment device 12. As a result, the thermal efficiency can be improved, and the hydrogen production cost can be reduced.

[0028] If the hydrogen production system 1 is provided with the water supply device 25, water can be supplied from the water supply device 25 to the first container 2 at a flow rate that compensates for the water consumed in the first container 2 during the hydrogen production operation. This allows hydrogen to be produced continuously in the hydrogen production system 1.

[0029] As described above, hydrogen compound materials deteriorate during hydrogen production. If the hydrogen production system 1 is provided with the hydrogen compound material supply device 41 and the discharge device 51, deteriorated hydrogen compound materials can be discharged while new hydrogen compound materials can be replenished. This allows hydrogen to be produced continuously.

[0030] If the discharge device 51 is equipped with a solid-liquid separator 54, the hydrogen compound material slurry discharged from the second container 3 can be separated into solid and liquid, and the separated solid, i.e., the deteriorated hydrogen compound material, can be recovered. If the hydrogen compound material is recyclable, the recovered hydrogen compound material can be reused in the hydrogen production system 1 after being regenerated.

[0031] (Embodiment 2) Next, a hydrogen production system according to a second embodiment of the present disclosure will be described. The hydrogen production system according to the second embodiment is different from the first embodiment in that the means for circulating the hydrogen compound material slurry 4 between the first container 2 and the second container 3 is changed. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

[0032] <Configuration of hydrogen production system according to embodiment 2 of the present disclosure> As shown in FIG. 2 , in the hydrogen production system 1 according to the second embodiment of the present disclosure, the second path 6 is provided vertically above the first path 5. The first temperature adjustment device 11 is provided in the first container 2 so as to be located above the position where the first path 5 is connected to the first container 2. The first temperature adjustment device 11 is preferably provided as high vertically as possible in the first container 2. Therefore, the first temperature adjustment device 11 is preferably provided near the liquid level of the hydrogen compound material slurry 4 in the first container 2. When the first container 2 is filled with the hydrogen compound material slurry 4, the first temperature adjustment device 11 is preferably provided at the top of the first container 2. Since the hydrogen compound material slurry 4 in the first container 2 is transferred to the second container 3 via the first path 5, the liquid level of the hydrogen compound material slurry 4 in the first container 2 should be located at least above the position where the first path 5 is connected to the first container 2. Therefore, the first temperature adjustment device 11 is provided in the first container 2 at least above the position where the first path 5 is connected to the first container 2.

[0033] The second temperature control device 12 is 2 container 3 The second temperature control device 12 is preferably provided in the second container 3 at a position as low as possible in the vertical direction. 2 Temperature control device 1 2 is preferably provided at the bottom of the second container 3. The other configurations are the same as those of the first embodiment, except that the stirring devices 16 and 17 (see FIG. 1), the first pump 13 (see FIG. 1), and the second pump 14 (see FIG. 1) are not provided.

[0034] <Operation of the hydrogen production system according to the second embodiment of the present disclosure> Next, the operation of the hydrogen production system 1 according to the second embodiment of the present disclosure will be described. The second embodiment differs from the first embodiment only in the operation of circulating the hydrogen compound material slurry 4 between the first container 2 and the second container 3, and the other operations are the same as those of the first embodiment. Therefore, only the operation of circulating the hydrogen compound material slurry 4 will be described below.

[0035] When the hydrogen compound material slurry 4 is cooled in the first container 2 by the first temperature controller 11, the cooled hydrogen compound material slurry 4 moves downward in the first container 2 by convection. The hydrogen compound material slurry 4 that has moved downward in the first container 2 flows through the first path 5 and into the second container 3. When the hydrogen compound material slurry 4 that has flowed into the second container 3 is heated by the second temperature controller 12, the heated hydrogen compound material slurry 4 moves upward in the second container 3 by convection. The hydrogen compound material slurry 4 that has moved upward in the second container 3 flows through the second path 6 and into the first container 2. With this operation, the hydrogen compound material slurry 4 can circulate between the first container 2 and the second container 3 by natural convection. In the second embodiment, a pump for circulating the hydrogen compound material slurry 4 is not required, and therefore the cost of hydrogen production can be improved compared to the first embodiment.

[0036] In order to facilitate circulation of the hydrogen compound material slurry 4 between the first container 2 and the second container 3 by natural convection, it is preferable that the first container 2 and the second container 3 each have a shape that extends long in the vertical direction.

[0037] The contents described in each of the above embodiments can be understood, for example, as follows.

[0038] [1] A hydrogen production system according to one embodiment includes: a hydrogen compound material slurry (4) in which a hydrogen compound material is suspended in a solvent containing water; A first container (2), a second container (3) whose internal temperature is higher than that of the first container (2); a first passage (5) communicating the first container (2) with the second container (3); a second path (6) that communicates the first container (2) with the second container (3) and is different from the first path (5); Equipped with The hydrogen compound material slurry (4) contained in the first container (2) can be moved into the second container (3) via the first path (5), and the hydrogen compound material slurry (4) contained in the second container (3) can be moved into the first container (2) via the second path (6).

[0039] According to the hydrogen production system of the present disclosure, hydrogen can be produced by transferring a hydrogen compound material slurry containing hydrogen compound materials that have stored hydrogen in a first container into a second container that has a higher temperature than the first container, releasing hydrogen from the hydrogen compound materials in the second container, and transferring the hydrogen compound material slurry containing the hydrogen compound materials that have released hydrogen back into the first container to store hydrogen again. This operation only requires changing the temperature of the hydrogen compound material slurry, and temperature changes in the first and second containers that store the hydrogen compound material slurry can be minimized as much as possible, thereby improving thermal efficiency and, as a result, reducing hydrogen production costs.

[0040] [2] A hydrogen production system according to another embodiment is the hydrogen production system according to [1], a first temperature control device (11) for cooling the hydrogen compound material slurry (4) in the first container (2); a second temperature control device (12) for heating the hydrogen compound material slurry (4) in the second container (3); Equipped with.

[0041] With this configuration, it is possible to maintain the temperature of the hydrogen compound material slurry in the first container within a temperature range in which hydrogen can be stored in the hydrogen compound, and it is possible to maintain the temperature of the hydrogen compound material slurry in the second container within a temperature range in which hydrogen can be released from the hydrogen compound.

[0042] [3] A hydrogen production system according to yet another embodiment is the hydrogen production system according to [1] or [2], a first pump (13) provided in the first path (5) and configured to transfer the hydrogen compound material slurry (4) in the first container (2) to the second container (3); a second pump (14) provided in the second path (6) and configured to transfer the hydrogen compound material slurry (4) in the second container (3) to the first container (2); Equipped with.

[0043] According to this configuration, the hydrogen compound material slurry can be forcibly circulated between the first container and the second container.

[0044] [4] A hydrogen production system according to yet another embodiment is the hydrogen production system according to [2], The second path (6) is provided vertically above the first path (5), the first temperature adjustment device (11) is provided in the first container (2) so as to be located above a position where the first path (5) is connected to the first container (2); The second temperature control device (12) is configured to control the temperature of the first passage (5) in the second container ( 3 The second container (3) is provided with the second container (4) so ​​as to be located below the position where the second container (3) is connected to the first container (4).

[0045] According to this configuration, the hydrogen compound material slurry in the first container is cooled by the first temperature control device, causing convection and moving downward within the first container, and then the hydrogen compound material slurry flows through the first path and into the second container. The hydrogen compound material slurry that has flowed into the second container is heated by the second temperature control device, causing convection and moving upward within the second container, and then the hydrogen compound material slurry flows through the second path and into the first container. This operation allows the hydrogen compound material slurry to circulate between the first container and the second container by natural convection. This configuration eliminates the need for a pump to circulate the hydrogen compound material slurry between the first container and the second container, thereby improving hydrogen production costs compared to the configuration [3] above.

[0046] [5] A hydrogen production system according to yet another embodiment is any one of the hydrogen production systems [1] to [4], The system includes a heat exchanger (15) for exchanging heat between the hydrogen compound material slurry (4) flowing through the first path (5) and the hydrogen compound material slurry (4) flowing through the second path (6).

[0047] According to this configuration, the hydrogen compound material slurry transferred from the first container to the second container is heated, while the hydrogen compound material slurry transferred from the second container to the first container is cooled, thereby reducing the load on the second temperature adjustment device and the first temperature adjustment device, thereby improving thermal efficiency and reducing the cost of hydrogen production.

[0048] [6] A hydrogen production system according to yet another embodiment is any one of the hydrogen production systems [1] to [5], A water supply device (25) is provided to supply water into the first container (2).

[0049] According to this configuration, the water consumed by storing hydrogen in the first container can be replenished, so that hydrogen can be produced continuously.

[0050] [7] A hydrogen production system according to yet another embodiment is any one of the hydrogen production systems [1] to [6], a discharge device (51) for discharging the hydrogen compound material slurry (4) in the second container (3); a hydrogen compound material supply device (41) for supplying the hydrogen compound material into the first container (2); Equipped with.

[0051] According to this configuration, since deteriorated hydrogen compound components can be discharged while new hydrogen compound components can be replenished, hydrogen can be produced continuously.

[0052] [8] A hydrogen production system according to yet another embodiment is the hydrogen production system according to [7], The discharge device (51) includes a solid-liquid separator (54) for separating the hydrogen compound component slurry (4) into solid and liquid.

[0053] According to this configuration, if the hydrogen compound material is recyclable, it can be recovered by separating it from the discharged hydrogen compound material slurry, and the recovered hydrogen compound material can be reused after being regenerated.

[0054] [9] A hydrogen production system according to yet another embodiment is the hydrogen production system according to [8], The hydrogen compound material supply device (41) a storage member (slurry tank 42) for storing the hydrogen compound material slurry (4); a slurry supply path (43) communicating between the storage member (42) and the first container (2); a supply pump (44) provided in the slurry supply path (43) and configured to supply the hydrogen compound material slurry (4) in the storage member (42) to the first container (2); Equipped with.

[0055] If particulate hydrogen compound materials are directly supplied into the first container, the supplied hydrogen compound materials may agglomerate. In contrast, if new hydrogen compound materials are supplied in the form of a slurry, the risk of the hydrogen compound materials agglomerating can be reduced. [Explanation of symbols]

[0056] 1. Hydrogen production system 2 1st container 3 Second container 4. Hydrogen compound component slurry 5 Route 1 6. Route 2 11 1st temperature control device 12 Second temperature control device 13 First Pump 14 Second Pump 15 Heat exchanger 25 Water supply equipment 41 Hydrogen compound material supply device 42 Slurry tank (storage element) 43 Slurry supply route 44 Supply Pump 51 Discharge device 54 Solid-liquid separator

Claims

1. a hydrogen compound material slurry in which a hydrogen compound material is suspended in a solvent containing water; A first container; a second container having an interior temperature higher than that of the first container; a first passage communicating the first container with the second container; a second path communicating between the first container and the second container and different from the first path; a first temperature adjusting device that adjusts the temperature of the hydrogen compound material slurry in the first container; a second temperature control device that controls the temperature of the hydrogen compound material slurry in the second container; Equipped with The hydrogen compound member has a configuration in which a powder containing a two-dimensional array of hydrogen compounds represented by a chemical formula XmHn is supported on a particulate carrier, where X is an element other than hydrogen, and the stoichiometric ratio m:n is 1:1 to 3:4, and the element X is boron, A hydrogen production system configured to allow the hydrogen compound material slurry contained in the first container to be moved into the second container via the first path, and to allow the hydrogen compound material slurry contained in the second container to be moved into the first container via the second path.

2. A hydrogen production system as described in claim 1, wherein the first temperature control device adjusts the temperature of the hydrogen compound material slurry in the first container to a range of 20°C to 150°C, and the second temperature control device adjusts the temperature of the hydrogen compound material slurry in the second container to a range of 150°C to 250°C.

3. a first pump provided in the first path and configured to transfer the hydrogen compound material slurry in the first container to the second container; a second pump provided in the second path and configured to transfer the hydrogen compound material slurry in the second container to the first container; The hydrogen production system according to claim 1 or 2, comprising:

4. the second path is provided vertically above the first path, the first temperature adjustment device is provided in the first container so as to be located above a position where the first path is connected to the first container, The hydrogen production system according to claim 2 , wherein the second temperature adjustment device is provided in the second container so as to be located below a position where the first path is connected to the second container.

5. 5. The hydrogen production system according to claim 1, further comprising a heat exchanger for exchanging heat between the hydrogen compound component slurry flowing through the first path and the hydrogen compound component slurry flowing through the second path.

6. The hydrogen production system according to any one of claims 1 to 5, further comprising a water supply device that supplies water into the first container.

7. a discharge device for discharging the hydrogen compound component slurry in the second container; a hydrogen compound material supply device for supplying the hydrogen compound material into the first container; The hydrogen production system according to any one of claims 1 to 6, comprising:

8. The hydrogen production system according to claim 7 , wherein the discharge device includes a solid-liquid separator that separates the hydrogen compound component slurry into solid and liquid.

9. The hydrogen compound material supply device is a storage member for storing the hydrogen compound material slurry; a slurry supply path communicating between the storage member and the first container; a supply pump provided in the slurry supply path and configured to supply the hydrogen compound material slurry in the storage member to the first container; The hydrogen production system according to claim 8 , comprising:

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