Control device for hydrogen boiler system

Abstract

To suppress increase in cost and increase in energy consumption of a hydrogen boiler system.SOLUTION: A hydrogen boiler system 1 includes: a hydrogen tank 3 that accommodates a storage material capable of occluding and releasing hydrogen gas Fg; a feed water tank 4 that stores water; and a hydrogen boiler 5 that burns the hydrogen gas Fg supplied from the hydrogen tank 3 and obtains feed water from the feed water tank 4. A control device 10 for the hydrogen boiler system 1 supplies water from the feed water tank 4 to the hydrogen tank 3 in occlusion of the hydrogen gas Fg, and supplies high-temperature fluid from the hydrogen boiler 5 to the hydrogen tank 3 in release of the hydrogen gas Fg.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The technology disclosed in this specification relates to a control device for a hydrogen boiler system.

Background Art

[0002] From the perspective of preventing global warming, the use of hydrogen as energy is being studied in various fields. Patent Document 1 discloses a technology related to a hydrogen combustion boiler. Patent Document 2 discloses a technology related to a hydrogen storage alloy capable of storing and releasing hydrogen gas.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] A hydrogen storage alloy generates heat when storing hydrogen gas. Therefore, when storing hydrogen gas in a hydrogen storage alloy, it is necessary to cool the hydrogen storage alloy. When releasing hydrogen gas from the hydrogen storage alloy, it is necessary to heat the hydrogen storage alloy. When applying a hydrogen storage alloy to a hydrogen boiler system, providing a dedicated device for cooling and heating the hydrogen storage alloy will lead to an increase in the cost of the hydrogen boiler system and an increase in energy consumption.

[0005] The technology disclosed in this specification aims to suppress an increase in the cost of a hydrogen boiler system and an increase in energy consumption.

Means for Solving the Problems

[0006] This specification discloses a control device for a hydrogen boiler system. The hydrogen boiler system includes a hydrogen tank that stores a storage material capable of absorbing and releasing hydrogen gas, a water supply tank that stores water, and a hydrogen boiler that burns the hydrogen gas supplied from the hydrogen tank to obtain water supply from the water supply tank. The control device of the hydrogen boiler system supplies water from the water supply tank to the hydrogen tank during hydrogen gas absorption, and supplies high-temperature fluid from the hydrogen boiler to the hydrogen tank during hydrogen gas release.

Effects of the Invention

[0007] According to the technology disclosed in this specification, an increase in the cost and an increase in the energy consumption of the hydrogen boiler system are suppressed.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying Out the Invention

[0009] [Hydrogen Boiler System] FIG. 1 is a diagram schematically showing a hydrogen boiler system 1 according to an embodiment. FIG. 2 is a block diagram showing a part of the hydrogen boiler system 1 according to an embodiment.

[0010] As shown in FIGS. 1 and 2, the hydrogen boiler system 1 includes a hydrogen production device 2, a hydrogen tank 3, a water supply tank 4, a hydrogen boiler 5, an economizer 6, a header 7, steam-using equipment 8, a steam trap 9, a control device 10, a first pressure sensor 11, a second pressure sensor 12, and a header pressure sensor 13.

[0011] The hydrogen production device 2 generates hydrogen gas Fg. Examples of the hydrogen production device 2 include an alkaline water electrolysis device, a solid polymer type water electrolysis device, or a high-temperature water electrolysis device.

[0012] The hydrogen tank 3 contains a storage material capable of storing and releasing hydrogen gas Fg. The storage material is a material that can reversibly store and release hydrogen gas Fg. When the storage material absorbs hydrogen gas Fg, it releases heat, and by absorbing heat, it releases the stored hydrogen gas Fg. That is, when the storage material absorbs hydrogen gas Fg, it generates heat. The storage material releases hydrogen gas Fg when heated from the outside.

[0013] Examples of the storage material include metals such as Mg or V, hydrogen storage alloys such as LaNi5, TiMn 1.5 , or TiCrV, complex hydrides such as NaAlH4, adsorption-based hydrogen storage materials, and organic hydrides such as toluene.

[0014] In an embodiment, the hydrogen tank 3 includes a first hydrogen tank 31 and a second hydrogen tank 32. The first hydrogen tank 31 is connected to the hydrogen production device 2 via a first hydrogen line 21. The second hydrogen tank 32 is connected to the hydrogen production device 2 via a second hydrogen line 22. A first valve 81 is disposed in the first hydrogen line 21. A second valve 82 is disposed in the second hydrogen line 22. When the first valve 81 is opened, the hydrogen gas Fg generated in the hydrogen production device 2 is supplied to the first hydrogen tank 31 via the first hydrogen line 21. When the second valve 82 is opened, the hydrogen gas Fg generated in the hydrogen production device 2 is supplied to the second hydrogen tank 32 via the second hydrogen line 22. When the first valve 81 is closed, hydrogen gas Fg is not supplied from the hydrogen production device 2 to the first hydrogen tank 31. When the second valve 82 is closed, hydrogen gas Fg is not supplied from the hydrogen production device 2 to the second hydrogen tank 32.

[0015] The water supply tank 4 stores water. The water supply tank 4 is connected to the first hydrogen tank 31 via the first hot water line 41. The water supply tank 4 is connected to the second hydrogen tank 32 via the second hot water line 42.

[0016] The hydrogen boiler 5 burns the hydrogen gas Fg supplied from the hydrogen tank 3. The hydrogen boiler 5 obtains water supply from the water supply tank 4. The hydrogen boiler 5 burns the hydrogen gas Fg supplied from the hydrogen tank 3 and heats the water supplied from the water supply tank 4 to generate steam Fv. The hydrogen boiler 5 is connected to the first hydrogen tank 31 via the third hydrogen line 23. The hydrogen boiler 5 is connected to the second hydrogen tank 32 via the fourth hydrogen line 24. The hydrogen boiler 5 is connected to the water supply tank 4 via the water supply line 33.

[0017] The economizer 6 preheats the water supplied from the water supply tank 4 to the hydrogen boiler 5 with the exhaust gas from the hydrogen boiler 5. Exhaust gas is generated when the hydrogen gas Fg is burned in the hydrogen boiler 5. The exhaust gas generated in the hydrogen boiler 5 is discharged via the exhaust line 34. The economizer 6 preheats the water supplied from the water supply tank 4 to the hydrogen boiler 5 via the water supply line 33 with the exhaust gas flowing through the exhaust line 34.

[0018] The header 7 stores the steam Fv generated in the hydrogen boiler 5. The header 7 is connected to the hydrogen boiler 5 via the first steam line 51.

[0019] The steam using device 8 uses the steam Fv supplied from the header 7. The steam using device 8 is connected to the header 7 via the second steam line 52. As the steam using device 8, a steam sterilizer or a food processor is exemplified.

[0020] The steam trap 9 recovers the steam Fv released from the steam using device 8 to generate condensed water Fc. The condensed water Fc generated in the steam trap 9 is the condensed water generated by condensing at least a part of the steam Fv generated by the hydrogen boiler 5.

[0021] The water supply tank 4 is connected to the first hydrogen tank 31 via the first normal temperature water line 71. The water supply tank 4 is connected to the second hydrogen tank 32 via the second normal temperature water line 72. A third valve 83 is arranged in the first normal temperature water line 71. A fourth valve 84 is arranged in the second normal temperature water line 72. When the third valve 83 is opened, the water stored in the water supply tank 4 is supplied to the first hydrogen tank 31 via the first normal temperature water line 71. When the fourth valve 84 is opened, the water stored in the water supply tank 4 is supplied to the second hydrogen tank 32 via the second normal temperature water line 72. When the third valve 83 is closed, no water is supplied from the water supply tank 4 to the first hydrogen tank 31. When the fourth valve 84 is closed, no water is supplied from the water supply tank 4 to the second hydrogen tank 32.

[0022] The steam trap 9 is connected to the first hydrogen tank 31 via the first condensate line 61. The steam trap 9 is connected to the second hydrogen tank 32 via the second condensate line 62. A fifth valve 85 is arranged in the first condensate line 61. A sixth valve 86 is arranged in the second condensate line 62. When the fifth valve 85 is opened, the generated condensate Fc obtained in the steam trap 9 is supplied to the first hydrogen tank 31 via the first condensate line 61. When the sixth valve 86 is opened, the condensate Fc obtained in the steam trap 9 is supplied to the second hydrogen tank 32 via the second condensate line 62. When the fifth valve 85 is closed, no condensate Fc is supplied from the steam trap 9 to the first hydrogen tank 31. When the sixth valve 86 is closed, no condensate Fc is supplied from the steam trap 9 to the first hydrogen tank 31.

[0023] The first pressure sensor 11 detects the pressure of the first hydrogen tank 31. The detected value of the first pressure sensor 11 is transmitted to the control device 10.

[0024] The second pressure sensor 12 detects the pressure of the second hydrogen tank 32. The detected value of the second pressure sensor 12 is transmitted to the control device 10.

[0025] The header pressure sensor 13 detects the pressure of the header 7. The detection value of the header pressure sensor 13 is transmitted to the control device 10.

[0026] The control device 10 controls the hydrogen boiler system 1. The control device 10 controls each of the first valve 81, the second valve 82, the third valve 83, the fourth valve 84, the fifth valve 85, and the sixth valve 86.

[0027] [Operation of Hydrogen Boiler System] Each of FIGS. 3 and 4 is a diagram for explaining the operation of the hydrogen boiler system 1 according to the embodiment. In the hydrogen boiler system 1, normal temperature water Fr, hot water Fh, and condensed water Fc flow. The temperature of the hot water Fh is higher than the temperature of the normal temperature water Fr. The temperature of the condensed water Fc is higher than the temperature of the hot water Fh.

[0028] In the embodiment, when the hydrogen gas Fg released from the storage material of the first hydrogen tank 31 is supplied to the hydrogen boiler 5, the control device 10 causes the storage material of the second hydrogen tank 32 to absorb the hydrogen gas Fg. When the hydrogen gas Fg released from the second hydrogen tank 32 is supplied to the hydrogen boiler 5, the control device 10 causes the storage material of the first hydrogen tank 31 to absorb the hydrogen gas Fg. FIG. 3 shows the operation of the hydrogen boiler system 1 when the storage material of the first hydrogen tank 31 releases the hydrogen gas Fg and the storage material of the second hydrogen tank 32 absorbs the hydrogen gas Fg. FIG. 4 shows the operation of the hydrogen boiler system 1 when the storage material of the second hydrogen tank 32 releases the hydrogen gas Fg and the storage material of the first hydrogen tank 31 absorbs the hydrogen gas Fg.

[0029] As shown in FIG. 3, when the storage material of the second hydrogen tank 32 absorbs the hydrogen gas Fg and the storage material of the first hydrogen tank 31 releases the hydrogen gas Fg, the control device 10 closes the first valve 81 and opens the second valve 82.

[0030] The normal temperature water Fr is stored in the water supply tank 4. The control device 10 supplies the normal temperature water Fr from the water supply tank 4 to the second hydrogen tank 32 during the occlusion of hydrogen gas Fg in the second hydrogen tank 32. The control device 10 opens the fourth valve 84 so that the normal temperature water Fr from the water supply tank 4 is supplied to the second hydrogen tank 32 during the occlusion of hydrogen gas Fg in the second hydrogen tank 32. When the fourth valve 84 is opened, the normal temperature water Fr from the water supply tank 4 is supplied to the second hydrogen tank 32 via the second normal temperature water line 72. The control device 10 closes the third valve 83 so that the normal temperature water Fr from the water supply tank 4 is not supplied to the first hydrogen tank 31.

[0031] The control device 10 supplies the high-temperature fluid from the hydrogen boiler 5 to the first hydrogen tank 31 during the release of hydrogen gas Fg in the first hydrogen tank 31. The high-temperature fluid from the hydrogen boiler 5 supplied to the first hydrogen tank 31 is the condensed water Fc obtained by condensing at least a part of the steam Fv generated by the hydrogen boiler 5. As described above, the steam Fv generated in the hydrogen boiler 5 is supplied to the steam trap 9 via the header 7 and the steam using device 8. The steam Fv generated in the hydrogen boiler 5 is condensed in the steam trap 9. The high-temperature fluid supplied to the first hydrogen tank 31 is the condensed water Fc obtained in the steam trap 9. The control device 10 opens the fifth valve 85 so that the condensed water Fc obtained in the steam trap 9 is supplied to the first hydrogen tank 31. When the fifth valve 85 is opened, the condensed water Fc from the steam trap 9 is supplied to the first hydrogen tank 31 via the first condensed water line 61. The control device 10 closes the sixth valve 86 so that the condensed water Fc obtained in the steam trap 9 is not supplied to the second hydrogen tank 32.

[0032] The storage material generates heat when absorbing hydrogen gas Fg. The normal temperature water Fr supplied from the water supply tank 4 to the second hydrogen tank 32 is heated by the storage material in the second hydrogen tank 32. The control device 10 converts the normal temperature water Fr supplied from the water supply tank 4 to the second hydrogen tank 32 into hot water Fh and then returns it to the water supply tank 4 during the absorption of hydrogen gas Fg in the second hydrogen tank 32. The normal temperature water Fr supplied from the water supply tank 4 to the second hydrogen tank 32 via the second normal temperature water line 72 is heated in the second hydrogen tank 32 and converted into hot water Fh, and then returned to the water supply tank 4 via the second hot water line 42.

[0033] The storage material releases hydrogen gas Fg when heated from the outside. Since the storage material in the first hydrogen tank 31 is heated by the condensed water Fc from the steam trap 9, it releases hydrogen gas Fg. The hydrogen gas Fg released from the storage material in the first hydrogen tank 31 is supplied to the hydrogen boiler 5 via the third hydrogen line 23. The control device 10 supplies the condensed water Fc supplied to the first hydrogen tank 31 to the water supply tank 4 during the release of hydrogen gas Fg in the first hydrogen tank 31. The condensed water Fc supplied from the steam trap 9 to the first hydrogen tank 31 is converted into hot water Fh by (indirect) heat exchange with the storage material in the first hydrogen tank 31. The hot water Fh sent out from the first hydrogen tank 31 is supplied to the water supply tank 4 via the first hot water line 41.

[0034] The water supply tank 4 accommodates the hot water Fh supplied from the first hydrogen tank 31 via the first hot water line 41 and the hot water Fh supplied from the second hydrogen tank 32 via the second hot water line 42. The hot water Fh accommodated in the water supply tank 4 is supplied to the hydrogen boiler 5 via the water supply line 33.

[0035] As shown in FIG. 4, when causing the storage material in the first hydrogen tank 31 to absorb hydrogen gas Fg and causing the storage material in the second hydrogen tank 32 to release hydrogen gas Fg, the control device 10 closes the second valve 82 and opens the first valve 81.

[0036] When the control device 10 stores hydrogen gas Fg in the first hydrogen tank 31, it supplies the normal-temperature water Fr from the water supply tank 4 to the first hydrogen tank 31. When storing hydrogen gas Fg in the first hydrogen tank 31, the control device 10 opens the third valve 83 so that the normal-temperature water Fr from the water supply tank 4 is supplied to the first hydrogen tank 31. When the third valve 83 is opened, the normal-temperature water Fr from the water supply tank 4 is supplied to the first hydrogen tank 31 via the first normal-temperature water line 71. The control device 10 closes the fourth valve 84 so that the normal-temperature water Fr from the water supply tank 4 is not supplied to the second hydrogen tank 32.

[0037] When the control device 10 releases hydrogen gas Fg in the second hydrogen tank 32, it supplies the high-temperature fluid from the hydrogen boiler 5 to the second hydrogen tank 32. The high-temperature fluid supplied to the second hydrogen tank 32 is the condensed water Fc obtained in the steam trap 9. When the condensed water Fc obtained in the steam trap 9 is supplied to the second hydrogen tank 32, the control device 10 opens the sixth valve 86. When the sixth valve 86 is opened, the condensed water Fc from the steam trap 9 is supplied to the second hydrogen tank 32 via the second condensed water line 62. The control device 10 closes the fifth valve 85 so that the condensed water Fc obtained in the steam trap 9 is not supplied to the first hydrogen tank 31.

[0038] The storage material generates heat when storing hydrogen gas Fg. The normal-temperature water Fr supplied from the water supply tank 4 to the first hydrogen tank 31 is heated by the storage material in the first hydrogen tank 31. When storing hydrogen gas Fg in the first hydrogen tank 31, after converting the normal-temperature water Fr supplied from the water supply tank 4 to the first hydrogen tank 31 into warm water Fh, the control device 10 returns it to the water supply tank 4. The normal-temperature water Fr supplied from the water supply tank 4 to the first hydrogen tank 31 via the first normal-temperature water line 71 is heated in the first hydrogen tank 31 and converted into warm water Fh, and then returned to the water supply tank 4 via the first warm water line 41.

[0039] The stored material releases hydrogen gas Fg when heated from the outside. Since the stored material in the second hydrogen tank 32 is heated by the condensed water Fc from the steam trap 9, it releases hydrogen gas Fg. The hydrogen gas Fg released from the stored material in the second hydrogen tank 32 is supplied to the hydrogen boiler 5 via the fourth hydrogen line 24. The control device 10 supplies the condensed water Fc supplied to the second hydrogen tank 32 to the water supply tank 4 when the hydrogen gas Fg is released in the second hydrogen tank 32. The condensed water Fc supplied from the steam trap 9 to the second hydrogen tank 32 is converted into warm water Fh by (indirect) heat exchange with the stored material in the second hydrogen tank 32. The warm water Fh sent out from the second hydrogen tank 32 is supplied to the water supply tank 4 via the second warm water line 42.

[0040] The water supply tank 4 stores the warm water Fh supplied from the first hydrogen tank 31 via the first warm water line 41 and the warm water Fh supplied from the second hydrogen tank 32 via the second warm water line 42. The warm water Fh stored in the water supply tank 4 is supplied to the hydrogen boiler 5 via the water supply line 33.

[0041] As described above, the control device 10 can switch the hydrogen boiler system 1 between the state shown in FIG. 3 and the state shown in FIG. 4. As shown in FIG. 3, when the storage amount of the hydrogen gas Fg in the second hydrogen tank 32 becomes equal to or less than the first threshold value and the storage amount of the hydrogen gas Fg in the first hydrogen tank 31 exceeds the first threshold value, the control device 10 causes the stored material in the second hydrogen tank 32 to absorb the hydrogen gas Fg and causes the stored material in the first hydrogen tank 31 to release the hydrogen gas Fg. As shown in FIG. 4, when the storage amount of the hydrogen gas Fg in the first hydrogen tank 31 becomes equal to or less than the first threshold value and the storage amount of the hydrogen gas Fg in the second hydrogen tank 32 exceeds the first threshold value, the control device 10 causes the stored material in the first hydrogen tank 31 to absorb the hydrogen gas Fg and causes the stored material in the second hydrogen tank 32 to release the hydrogen gas Fg.

[0042] That is, when the storage amount of the hydrogen gas Fg in the second hydrogen tank 32 is small and the storage amount of the hydrogen gas Fg in the first hydrogen tank 31 is large, the control device 10 causes the storage material in the second hydrogen tank 32 to absorb the hydrogen gas Fg and causes the storage material in the first hydrogen tank 31 to release the hydrogen gas Fg. When the storage amount of the hydrogen gas Fg in the first hydrogen tank 31 is small and the storage amount of the hydrogen gas Fg in the second hydrogen tank 32 is large, the control device 10 causes the storage material in the first hydrogen tank 31 to absorb the hydrogen gas Fg and causes the storage material in the second hydrogen tank 32 to release the hydrogen gas Fg. Since a state in which hydrogen gas is sufficiently stored in at least one of the first hydrogen tank 31 and the second hydrogen tank 32 is maintained, the control device 10 can operate the hydrogen boiler 5 stably.

[0043] The control device 10 can estimate the storage amount of the hydrogen gas Fg in the first hydrogen tank 31 based on the detection value of the first pressure sensor 11 that detects the pressure of the first hydrogen tank 31. The control device 10 can estimate the storage amount of the hydrogen gas Fg in the second hydrogen tank 32 based on the detection value of the second pressure sensor 12 that detects the pressure of the second hydrogen tank 32. The control device 10 can switch the hydrogen boiler system 1 between the state shown in FIG. 3 and the state shown in FIG. 4 by comparing each of the estimated storage amounts of the hydrogen gas Fg in the first hydrogen tank 31 and the second hydrogen tank 32 with a first threshold value.

[0044] When the storage amount of the hydrogen gas Fg in each of the first hydrogen tank 31 and the second hydrogen tank 32 exceeds the first threshold value and the detection value of the header pressure sensor 13 that detects the pressure of the header 7 in which the steam Fv generated in the hydrogen boiler 5 is accommodated exceeds the second threshold value, the control device 10 stops the operation of the hydrogen production device 2 that supplies the hydrogen gas Fg to the first hydrogen tank 31 and the second hydrogen tank 32.

[0045] That is, when a large amount of hydrogen gas Fg is stored in each of the first hydrogen tank 31 and the second hydrogen tank 32 and the amount of steam used by the steam-using device 8 is small, the control device 10 stops the operation of the hydrogen production device 2. When a large amount of hydrogen gas Fg is stored in the hydrogen tank 3 and the amount of steam used by the steam-using device 8 is small, there is no need for the hydrogen production device 2 to produce hydrogen gas Fg. When a large amount of hydrogen gas Fg is stored in the hydrogen tank 3 and the amount of steam used by the steam-using device 8 is small, the operation of the hydrogen production device 2 is stopped, so the power consumption for operating the hydrogen production device 2 is reduced.

[0046] [Effect] As described above, in the embodiment, the hydrogen boiler system 1 includes a hydrogen tank 3 that houses a storage material capable of absorbing and releasing hydrogen gas Fg, a water supply tank 4 that houses water, and a hydrogen boiler 5 that burns the hydrogen gas Fg supplied from the hydrogen tank 3 to obtain water supply from the water supply tank 4. The control device 10 of the hydrogen boiler system 1 supplies water from the water supply tank 4 to the hydrogen tank 3 during the absorption of hydrogen gas Fg. During the release of hydrogen gas Fg, the condensed water Fc, which is a high-temperature fluid from the hydrogen boiler 5, is supplied to the hydrogen tank 3.

[0047] The storage material generates heat when absorbing hydrogen gas Fg. During the absorption of hydrogen gas Fg in the storage material, the storage material in the hydrogen tank 3 is cooled by the water from the water supply tank 4. The storage material releases hydrogen gas Fg when heated from the outside. During the release of hydrogen gas Fg, the storage material in the hydrogen tank 3 is heated by the condensed water Fc from the steam trap 9. When the storage material is applied to the hydrogen boiler system 1, there is no need to provide a dedicated device for cooling and heating the storage material, so an increase in the cost and an increase in the energy consumption of the hydrogen boiler system 1 are suppressed.

[0048] [Other Embodiments] In the above-described embodiment, in the release of hydrogen gas Fg, the condensed water Fc from the steam trap 9 is supplied as a high-temperature fluid to the hydrogen tank 3, and the storage material is heated by the condensed water Fc. The high-temperature fluid that heats the storage material during the release of hydrogen gas Fg in the storage material may be the exhaust gas generated by the combustion of hydrogen gas Fg in the hydrogen boiler 5. That is, the exhaust gas discharged from the hydrogen boiler 5 to the exhaust line 34 may be used for heating the storage material. When the storage material is heated by the exhaust gas, hydrogen gas Fg is released from the storage material.

[0049] In the above-described embodiment, the hydrogen boiler 5 is configured to burn the hydrogen gas Fg supplied from the hydrogen tank 3 and heat the water supplied from the water supply tank 4 to generate steam Fv. The hydrogen boiler 5 may burn the hydrogen gas Fg supplied from the hydrogen tank 3 and heat the water supplied from the water supply tank 4 to produce warm water.

Description of Reference Numerals

[0050] 1... Hydrogen boiler system, 2... Hydrogen production device, 3... Hydrogen tank, 4... Water supply tank, 5... Hydrogen boiler, 6... Economizer, 7... Header, 8... Steam-using equipment, 9... Steam trap, 10... Control device, 11... First pressure sensor, 12... Second pressure sensor, 13... Header pressure sensor, 21... First hydrogen line, 22... Second hydrogen line, 23... Third hydrogen line, 24... Fourth hydrogen line, 31... First hydrogen tank, 32... Second hydrogen tank, 33... Water supply line, 34... Exhaust line, 41... First warm water line, 42... Second warm water line, 51... First steam line, 52... Second steam line, 61... First condensed water line, 62... Second condensed water line, 71... First normal temperature water line, 72... Second normal temperature water line, 81... First valve, 82... Second valve, 83... Third valve, 84... Fourth valve, 85... Fifth valve, 86... Sixth valve, Fc... Condensed water, Fg... Hydrogen gas, Fh... Warm water, Fr... Normal temperature water, Fv... Steam.

Claims

1. A hydrogen tank that stores a storage material capable of absorbing and releasing hydrogen gas, A water supply tank that stores water, A hydrogen boiler that burns the hydrogen gas supplied from the hydrogen tank to obtain water supply from the water supply tank, and a control device for a hydrogen boiler system, In the absorption of the hydrogen gas, water from the water supply tank is supplied to the hydrogen tank, In the release of the hydrogen gas, high-temperature fluid from the hydrogen boiler is supplied to the hydrogen tank, A control device for a hydrogen boiler system.

2. The high-temperature fluid is condensed water generated by condensing at least a part of the steam generated by the hydrogen boiler, The control device for a hydrogen boiler system according to Claim 1.

3. The high-temperature fluid is exhaust gas generated by the combustion of the hydrogen gas, The control device for a hydrogen boiler system according to Claim 2.

4. In the absorption of the hydrogen gas, the water supplied from the water supply tank to the hydrogen tank is returned to the water supply tank, The control device for a hydrogen boiler system according to Claim 1.

5. In the release of the hydrogen gas, the high-temperature fluid supplied to the hydrogen tank is supplied to the water supply tank, The control device for a hydrogen boiler system according to Claim 2.

6. The hydrogen tank includes a first hydrogen tank and a second hydrogen tank, When the hydrogen gas released from the storage material of the first hydrogen tank is supplied to the hydrogen boiler, hydrogen gas is absorbed into the storage material of the second hydrogen tank, When the hydrogen gas released from the storage material of the second hydrogen tank is supplied to the hydrogen boiler, hydrogen gas is absorbed into the storage material of the first hydrogen tank, The control device for a hydrogen boiler system according to Claim 1.

7. When the storage amount of the second hydrogen tank becomes equal to or less than a first threshold value and the storage amount of the first hydrogen tank exceeds the first threshold value, hydrogen gas is absorbed into the storage material of the second hydrogen tank, When the storage amount of the first hydrogen tank becomes equal to or less than a first threshold value and the storage amount of the second hydrogen tank exceeds the first threshold value, hydrogen gas is absorbed into the storage material of the first hydrogen tank, The control device for a hydrogen boiler system according to Claim 6.

8. Based on the detection value of a first pressure sensor that detects the pressure of the first hydrogen tank, estimate the storage amount of the first hydrogen tank, and based on the detection value of a second pressure sensor that detects the pressure of the second hydrogen tank, estimate the storage amount of the second hydrogen tank, The control device of the hydrogen boiler system according to claim 7.

9. When the storage amounts of each of the first hydrogen tank and the second hydrogen tank exceed a first threshold value and the detected value of a header pressure sensor that detects the pressure of a header in which the steam generated in the hydrogen boiler is stored exceeds a second threshold value, the operation of a hydrogen production device that supplies hydrogen gas to the first hydrogen tank and the second hydrogen tank is stopped. The control device of the hydrogen boiler system according to claim 7.

Images