Solid hydrogen storage system based on hydrogen energy gas turbine

Abstract

The solid-state hydrogen storage system comprises at least one solid-state hydrogen storage module, a gas port of each solid-state hydrogen storage module is connected with a hydrogen supply main pipe through a hydrogen supply connecting pipe set, and the hydrogen supply main pipe is further connected with a hydrogen inlet of a buffer tank through a first hydrogen supply pipe set; a hydrogen outlet of the buffer tank is connected with a hydrogen inlet of the hydrogen energy gas turbine through a second hydrogen supply pipe set, the hydrogen supply main pipe is connected with a hydrogen source, and the hydrogen source provides hydrogen for the solid hydrogen storage module and / or the buffer tank through the hydrogen supply main pipe. A solid hydrogen storage material is arranged in each solid hydrogen storage module; the single solid hydrogen storage module provides hydrogen for the hydrogen energy gas turbine, the hydrogen in the hydrogen energy gas turbine burns to convert chemical energy into mechanical energy, flue gas is generated, and the flue gas heats each solid hydrogen storage module in a direct heat exchange mode or an indirect heat exchange mode. The system is good in safety and stability, compact in structure, low in cost and low in energy consumption.

Description

Technical Field

[0001] The present invention relates to the field of hydrogen energy technology, and in particular to a solid-state hydrogen storage system based on a hydrogen gas turbine. Background Art

[0002] A gas turbine is an internal combustion engine that uses a continuously flowing gas as a working fluid to drive a high-speed rotating impeller, converting the fuel's energy into useful work. With the advancement of energy technology, hydrogen-powered gas turbines fueled by pure hydrogen or hydrogen-blended gas have emerged. However, hydrogen reserves have limited the development and application of hydrogen-powered gas turbines. Gaseous hydrogen storage can store approximately 4% (mass fraction) of hydrogen, but the compression process is highly dangerous and requires high pressure resistance from the container. Liquid hydrogen storage consumes a lot of energy during the hydrogen liquefaction process, requiring high insulation properties from the container. In addition, both gaseous and liquid hydrogen storage systems are subject to continuous evaporation losses and gas leakage due to the large temperature difference between the inside and outside of the system. Summary of the Invention

[0003] Based on this, it is necessary to provide a solid-state hydrogen storage system based on a hydrogen gas turbine to address the problems of gas hydrogen storage and liquid hydrogen storage in the existing technology, which require special low-temperature or high-pressure containers, have complex storage equipment, high cost, high energy consumption, and poor safety.

[0004] The technical solutions adopted in the present invention are as follows:

[0005] A solid-state hydrogen storage system based on a hydrogen gas turbine includes at least one solid-state hydrogen storage module. The gas port of a single solid-state hydrogen storage module is connected to a hydrogen supply main pipe via a hydrogen supply connecting pipe group. The hydrogen supply main pipe is further connected to the hydrogen inlet of a buffer tank via a first hydrogen supply pipe group. The hydrogen outlet of the buffer tank is connected to the hydrogen inlet of the hydrogen gas turbine via a second hydrogen supply pipe group. The hydrogen supply main pipe is connected to a hydrogen gas source, which provides hydrogen to the solid-state hydrogen storage module and / or the buffer tank respectively through the hydrogen supply main pipe.

[0006] A solid-state hydrogen storage material is provided inside a single solid-state hydrogen storage module, and the corresponding solid-state hydrogen storage module absorbs or releases hydrogen through the solid-state hydrogen storage material;

[0007] When a single solid-state hydrogen storage module releases hydrogen, it supplies hydrogen to the hydrogen gas turbine in sequence through the corresponding hydrogen supply connecting pipe group, hydrogen supply main pipe, first hydrogen supply pipe group, buffer tank and second hydrogen supply pipe group. The hydrogen inside the hydrogen gas turbine burns to convert chemical energy into mechanical energy and generate flue gas. The flue gas heats each solid-state hydrogen storage module through direct heat exchange or indirect heat exchange.

[0008] As a further improvement of the above technical solution:

[0009] It also includes a heat exchange module, which includes a heat exchanger assembly arranged in a one-to-one correspondence with the solid-state hydrogen storage module. A first heat exchange medium and a second heat exchange medium flow in reverse in the heat exchange assembly. The first heat exchange medium is heated by a heating furnace, and the second heat exchange medium is cooled by a cooling tower.

[0010] The tail gas outlet of the hydrogen gas turbine is connected to the flue gas main;

[0011] When the direct heat exchange method is adopted, the first heat exchange inlet of a single solid-state hydrogen storage module is connected to the flue gas main pipe through the flue gas connecting pipe group, and the first heat exchange outlet of the single solid-state hydrogen storage module is connected to the exhaust connecting pipe group, so that the solid-state hydrogen storage module is directly heated by the flue gas;

[0012] When the indirect heat exchange method is adopted, the flue gas main is connected to the first heat exchange inlet of the heat exchange component, so that the first heat exchange medium in the heat exchange component is heated by the flue gas, and then the solid hydrogen storage module is indirectly heated by the first heat exchange medium.

[0013] When an indirect heat exchange method is adopted, the first heat exchange outlet of the heat exchange component is connected to an exhaust pipe, and the flue gas is discharged through the exhaust pipe after exchanging heat with the first heat exchange medium.

[0014] When an indirect heat exchange method is adopted, the heat exchange assembly includes a first heat exchanger and a second heat exchanger connected in series;

[0015] Flue gas and a first heat exchange medium flow in the first heat exchanger in counter-current directions, so that the flue gas and the first heat exchange medium exchange heat in the first heat exchanger;

[0016] The first heat exchange medium and the second heat exchange medium flow in counter-current in the second heat exchanger, so that the first heat exchange medium is cooled by the second heat exchange medium in the second heat exchanger.

[0017] When using direct heat exchange, a single solid-state hydrogen storage module is auxiliary heated by a heat exchange module or an electric heating tube.

[0018] A one-way valve is installed on the hydrogen supply main pipe.

[0019] A single solid-state hydrogen storage module includes at least one solid-state hydrogen storage unit. The structure of a single solid-state hydrogen storage unit is as follows: it includes a storage tank, the interior of the storage tank is filled with solid-state hydrogen storage material, the outer wall of the storage tank is equipped with an insulation layer, and a heating component is provided between the outer wall of the storage tank and the insulation layer.

[0020] The heating component adopts a heat transfer liquid heat exchange tube and / or a flue gas heat exchange tube.

[0021] A booster pump is installed on the first hydrogen supply pipe group.

[0022] The beneficial effects of the present invention are as follows:

[0023] The present invention has a compact and reasonable structure and is easy to operate. By setting up a solid-state hydrogen storage module, it can store hydrogen based on solid-state hydrogen storage materials and stably supply hydrogen to the hydrogen gas turbine, and the system has good safety and stability. At the same time, the solid-state hydrogen storage module can directly or indirectly utilize the heat energy carried by the flue gas generated by the hydrogen gas turbine, thereby compacting the system structure, reducing costs and saving energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention.

[0025] Figure 2 This is a structural diagram of embodiment 1 of the present invention.

[0026] Figure 3 Schematic diagram of the structure of the solid-state hydrogen storage module in Example 1 of the present invention.

[0027] Figure 4 This is a structural diagram of embodiment 2 of the present invention.

[0028] Figure 5 This is a structural diagram of the solid-state hydrogen storage module in Example 2 of the present invention.

[0029] Figure 6 This is a structural diagram of embodiment 3 of the present invention.

[0030] Figure 7 This is a schematic structural diagram of the solid-state hydrogen storage module in Example 3 of the present invention.

[0031] Including: 1. Hydrogen gas turbine; 2. Buffer tank; 3. Solid hydrogen storage module; 4. Booster pump; 5. Heat exchange module; 6. Hydrogen supply main; 8. Flue gas main; 10. Air pump;

[0032] 31. First solid-state hydrogen storage unit; 32. Second solid-state hydrogen storage unit; 33. Third solid-state hydrogen storage unit; 34. Fourth solid-state hydrogen storage unit;

[0033] 311. Storage tank; 312. Insulation layer; 313. Flue gas heat exchange tube; 314. Electric heating tube; 315. Heat transfer fluid heat exchange tube;

[0034] 51. First heat exchanger; 52. Second heat exchanger; 53. Heating furnace; 54. Cooling tower;

[0035] 60. Hydrogen supply connecting pipe group; 61. First hydrogen supply pipe group; 62. Second hydrogen supply pipe group;

[0036] 80. Flue gas connecting pipe assembly; 81. Exhaust gas connecting pipe assembly; 82. Exhaust main pipe;

[0037] 91. First cooling tube group; 92. Second cooling tube group; 93. First heat exchange tube group; 94. Second heat exchange tube group. DETAILED DESCRIPTION

[0038] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0039] like Figure 1-Figure 7 As shown, a solid-state hydrogen storage system based on a hydrogen gas turbine comprises at least one solid-state hydrogen storage module 3, the gas port of a single solid-state hydrogen storage module 3 is connected to a hydrogen supply main pipe 6 via a hydrogen supply connecting pipe group 60, the hydrogen supply main pipe 6 is further connected to the hydrogen inlet of a buffer tank 2 via a first hydrogen supply pipe group 61, the hydrogen outlet of the buffer tank 2 is connected to the hydrogen inlet of the hydrogen gas turbine 1 via a second hydrogen supply pipe group 62, the hydrogen supply main pipe 6 is connected to a hydrogen gas source, and the hydrogen gas source provides hydrogen to the solid-state hydrogen storage module 3 and / or the buffer tank 2 via the hydrogen supply main pipe 6; a single solid-state storage Solid-state hydrogen storage materials are provided inside the hydrogen module 3, and the corresponding solid-state hydrogen storage module 3 absorbs or releases hydrogen through the solid-state hydrogen storage material; when a single solid-state hydrogen storage module 3 releases hydrogen, hydrogen is supplied to the hydrogen gas turbine 1 in sequence through the corresponding hydrogen supply connecting pipe group 60, the hydrogen supply main pipe 6, the first hydrogen supply pipe group 61, the buffer tank 2 and the second hydrogen supply pipe group 62. The hydrogen inside the hydrogen gas turbine 1 burns to convert chemical energy into mechanical energy and generate flue gas, which heats each solid-state hydrogen storage module 3 through direct heat exchange or indirect heat exchange.

[0040] It also includes a heat exchange module 5, which includes a heat exchanger assembly arranged in a one-to-one correspondence with the solid-state hydrogen storage module 3. A first heat exchange medium and a second heat exchange medium flow in reverse in the heat exchange assembly. The first heat exchange medium is heated by a heating furnace 53, and the second heat exchange medium is cooled by a cooling tower 54.

[0041] The exhaust outlet of the hydrogen gas turbine 1 is connected to the flue gas main pipe 8; when the direct heat exchange method is adopted, the first heat exchange inlet of the single solid-state hydrogen storage module 3 is connected to the flue gas main pipe 8 through the flue gas connecting pipe group 80, and the first heat exchange outlet of the single solid-state hydrogen storage module 3 is connected to the exhaust connecting pipe group 81, so that the solid-state hydrogen storage module 3 is directly heated by the flue gas; when the indirect heat exchange method is adopted, the flue gas main pipe 8 is connected to the first heat exchange inlet of the heat exchange component, so that the first heat exchange medium in the heat exchange component is heated by the flue gas, and then the solid-state hydrogen storage module 3 is indirectly heated by the first heat exchange medium.

[0042] When an indirect heat exchange method is adopted, the first heat exchange outlet of the heat exchange component is connected to the exhaust pipe 82 , and the flue gas is discharged through the exhaust pipe 82 after exchanging heat with the first heat exchange medium.

[0043] When an indirect heat exchange method is adopted, the heat exchange component includes a first heat exchanger 51 and a second heat exchanger 52 connected in series; flue gas and a first heat exchange medium flow in reverse directions in the first heat exchanger 51, so that the flue gas and the first heat exchange medium exchange heat in the first heat exchanger 51; the first heat exchange medium and the second heat exchange medium flow in reverse directions in the second heat exchanger 52, so that the first heat exchange medium is cooled by the second heat exchange medium in the second heat exchanger 52.

[0044] When the direct heat exchange method is adopted, a single solid-state hydrogen storage module 3 is auxiliary heated by the heat exchange module 5 or the electric heating tube 314 .

[0045] The specific structure and functions of the present invention are as follows:

[0046] The present invention provides a solid hydrogen storage system based on a hydrogen gas turbine, comprising a hydrogen gas turbine 1, a buffer tank 2, a solid hydrogen storage module 3, a booster pump 4, a heat exchange module 5, a hydrogen supply main pipe 6 and a flue gas main pipe 8; wherein,

[0047] The hydrogen gas turbine 1 uses hydrogen as fuel, which is low-carbon and environmentally friendly. In the present invention, the hydrogen supply main 6 can directly provide hydrogen to the hydrogen gas turbine 1 through the buffer tank 2, or hydrogen can be first filled into the solid hydrogen storage module 3. When the hydrogen gas turbine 1 is working, hydrogen is provided to the hydrogen gas turbine 1 through the solid hydrogen storage module 3.

[0048] The hydrogen inlet of the buffer tank 2 is connected to the hydrogen supply main 6 through the first hydrogen supply pipe group 61, and the hydrogen outlet of the buffer tank 2 is connected to the hydrogen inlet of the hydrogen gas turbine 1 through the second hydrogen supply pipe group 62; the buffer tank 2 serves as a temporary storage and buffer device for hydrogen, and is used to achieve stable hydrogen supply, avoid hydrogen supply fluctuations caused by unstable external hydrogen source supply or mismatch of hydrogen release speed of the solid-state hydrogen storage module 3, thereby ensuring stable operation of the hydrogen gas turbine 1.

[0049] The present invention is equipped with multiple solid-state hydrogen storage modules 3, each of which operates independently of the others, enabling independent hydrogen supply to the hydrogen gas turbine 1. By providing the solid-state hydrogen storage modules 3, hydrogen can be stored using solid-state hydrogen storage materials, providing a stable supply of hydrogen to the hydrogen gas turbine 1, ensuring system safety and stability. Furthermore, the solid-state hydrogen storage modules 3 can directly or indirectly utilize the heat energy carried by the flue gas (i.e., tail gas) generated by the hydrogen gas turbine 1, thereby compacting the system structure, reducing costs, and saving energy.

[0050] In the present invention, Figure 3 、 Figure 5 、 Figure 7As shown, a single solid-state hydrogen storage module 3 includes at least one solid-state hydrogen storage unit. The structure of a single solid-state hydrogen storage unit is as follows: it includes a storage tank 311, the interior of the storage tank 311 is filled with solid-state hydrogen storage material, the outer wall surface of the storage tank 311 is equipped with an insulation layer 312, and a heating component is provided between the outer wall surface of the storage tank 311 and the insulation layer 312; the heating component adopts a heat transfer liquid heat exchange pipe 315 and / or a flue gas heat exchange pipe 313; in addition, when the heating component adopts the flue gas heat exchange pipe 313, an electric heating pipe 314 can be provided for auxiliary heating.

[0051] A single solid-state hydrogen storage module 3 contains a solid-state hydrogen storage material. This material is a thermally stable compound that facilitates long-term storage. It releases hydrogen through heating or reaction. Furthermore, due to its high hydrogen storage density—1,000 times that of gaseous hydrogen and 1.5 times that of liquid hydrogen—and its ability to achieve stable storage at room temperature and pressure, it is far safer than both gaseous and liquid hydrogen storage. In the present invention, the solid-state hydrogen storage material utilizes a magnesium-based material, specifically, magnesium, an Mg-Ni hydrogen storage alloy, magnesium hydride, and other materials.

[0052] The boost pump 4 is installed on the first hydrogen supply pipe group 61 and is used to adjust the hydrogen supply pressure to ensure that the hydrogen gas turbine 1 obtains hydrogen at a suitable pressure, thereby improving the reliability and safety of the system.

[0053] Although solid-state hydrogen storage materials can stably store hydrogen at room temperature and pressure, their hydrogen absorption or desorption process needs to be carried out within a certain pressure range and a certain temperature range; therefore, a heat exchange module 5 is provided to heat the solid-state hydrogen storage module 3 so that the interior of the solid-state hydrogen storage module 3 reaches the hydrogen absorption temperature or the hydrogen desorption temperature.

[0054] like Figure 2 、 Figure 6 As shown, the heat exchange module 5 includes a heat exchanger assembly arranged in a one-to-one correspondence with the solid-state hydrogen storage module 3, a heating furnace 53 arranged in a one-to-one correspondence with the heat exchanger assembly, and a cooling tower 54; the heat exchange module 5 exchanges heat with the solid-state hydrogen storage module 3 based on thermal oil, that is, the first heat exchange medium is thermal oil, and the second heat exchange medium is cooling water.

[0055] The hydrogen supply main pipe 6 is connected to a hydrogen source and can directly supply hydrogen to the buffer tank 2. Furthermore, by providing a hydrogen supply connecting pipe assembly 60 corresponding one-to-one with each solid-state hydrogen storage module 3, the hydrogen supply main pipe 6 can independently supply hydrogen to each solid-state hydrogen storage module 3. A one-way valve is installed on the hydrogen supply main pipe 6 to prevent hydrogen backflow, ensuring system safety when the solid-state hydrogen storage module 3 supplies hydrogen to the hydrogen gas turbine 1.

[0056] The flue gas main pipe 8 is used to lead out the flue gas generated when the hydrogen gas turbine 1 is working; it can directly introduce the flue gas into the interior of the solid hydrogen storage module 3 through the flue gas connecting pipe group 80, thereby realizing direct heat exchange; it can also heat the first heat exchange medium through the flue gas, and then heat the solid hydrogen storage module 3 through the first heat exchange medium, thereby realizing indirect heat exchange.

[0057] When direct heat exchange is adopted, a single heat exchange component includes a second heat exchanger 52, which is connected to a cooling tower 54. The heat transfer oil is cooled by cooling water, so that during the stable process of hydrogen absorption and heat release by the solid-state hydrogen storage material, excess heat is taken away by the heat transfer oil, thereby maintaining the internal temperature of the solid-state hydrogen storage module 3 stable; the first heat exchange medium (i.e., the heat transfer oil) is heated by the heating furnace 53, thereby auxiliary heating the solid-state hydrogen storage module 3 during the hydrogen release process of the solid-state hydrogen storage material and the hydrogen absorption startup process; in addition, the heat exchange module 5 can be omitted for auxiliary heating. By setting an electric heating tube 314, the solid-state hydrogen storage module 3 can be auxiliary heated during the hydrogen release process of the solid-state hydrogen storage material and the hydrogen absorption startup process by using electric auxiliary heating.

[0058] When the indirect heat exchange method is adopted, a single heat exchange component includes a first heat exchanger 51 and a second heat exchanger 52. Flue gas is introduced into the first heat exchanger 51 to heat the first heat exchange medium (i.e., heat transfer oil), and then the solid-state hydrogen storage module 3 is heated by the heat transfer oil during the hydrogen release process of the solid-state hydrogen storage material and the hydrogen absorption startup process. The heating furnace 53 serves as a backup heat source to assist in heating the heat transfer oil in the event of insufficient flue gas; the second heat exchanger 52 is used to ensure that the stability of the solid-state hydrogen storage module 3 is in a stable state during the stable process of hydrogen absorption and heat release of the solid-state hydrogen storage material.

[0059] The following is the specific embodiment section.

[0060] Example 1:

[0061] like Figure 2-Figure 3 As shown, the present embodiment provides two solid-state hydrogen storage modules 3, and each solid-state hydrogen storage module 3 is provided with four solid-state hydrogen storage units, including a first solid-state hydrogen storage unit 31, a second solid-state hydrogen storage unit 32, a third solid-state hydrogen storage unit 33 and a fourth solid-state hydrogen storage unit 34. The structures of the four solid-state hydrogen storage units are the same, and all include a storage tank 311. An insulation layer 312 is installed on the outside of the storage tank 311, and a flue gas heat exchange pipe 313 and a heat transfer liquid heat exchange pipe 315 are installed between the insulation layer 312 and the storage tank 311; the flue gas inlet of the flue gas heat exchange pipe 313 corresponds to the first heat exchange inlet of the solid-state hydrogen storage module 3, and the flue gas outlet of the flue gas heat exchange pipe 313 corresponds to the first heat exchange outlet of the solid-state hydrogen storage module 3;

[0062] The heat exchange module 5 of this embodiment includes two second heat exchangers 52 , two heating furnaces 53 , and a cooling tower 54 .

[0063] In this embodiment, the connection relationship between the modules is as follows:

[0064] The hydrogen gas turbine 1 is connected to the hydrogen outlet of the buffer tank 2 through the second hydrogen supply pipe group 62, and the hydrogen inlet of the buffer tank 2 is connected to the hydrogen supply main pipe 6 through the first hydrogen supply pipe group 61, and the hydrogen supply main pipe 6 is connected to the hydrogen gas source;

[0065] The hydrogen supply main pipe 6 is equipped with two spaced-apart, parallel hydrogen supply connecting pipe groups 60. The ends of the two hydrogen supply connecting pipe groups 60 are connected to the two solid-state hydrogen storage modules 3 in a one-to-one correspondence. Inside a single solid-state hydrogen storage module 3, the hydrogen flow path is as follows:

[0066] The corresponding hydrogen supply connecting pipe group 60 is respectively equipped with a first pipe group, a second pipe group, a third pipe group and a fourth pipe group. The end of the first pipe group is connected to the gas port of the storage tank 311 in the first solid-state hydrogen storage unit 31, the end of the second pipe group is connected to the gas port of the storage tank 311 in the second solid-state hydrogen storage unit 32, the end of the third pipe group is connected to the gas port of the storage tank 311 in the third solid-state hydrogen storage unit 33, and the end of the fourth pipe group is connected to the gas port of the storage tank 311 in the fourth solid-state hydrogen storage unit 34; so that when the solid-state hydrogen storage module 3 needs to be charged with hydrogen, the hydrogen The gas source introduces hydrogen into the corresponding hydrogen supply connecting pipe group 60 through the hydrogen supply main pipe 6, and then fills the four solid-state hydrogen storage units with hydrogen through the corresponding first pipe group, second pipe group, third pipe group and fourth pipe group respectively; when the solid-state hydrogen storage module 3 needs to release hydrogen, the hydrogen released by the four solid-state hydrogen storage units enters the hydrogen supply connecting pipe group 60 through the corresponding first pipe group, second pipe group, third pipe group and fourth pipe group respectively, and then provides hydrogen to the hydrogen gas turbine 1 through the hydrogen supply main pipe 6, the first hydrogen supply pipe group 61, the buffer tank 2 and the second hydrogen supply pipe group 62;

[0067] The exhaust outlet of the hydrogen gas turbine 1 is connected to the flue gas main pipe 8, on which two symmetrically arranged flue gas connecting pipe groups 80 are installed. The ends of the two flue gas connecting pipe groups 80 are respectively connected to the two solid-state hydrogen storage modules 3 in a one-to-one correspondence. The two solid-state hydrogen storage modules 3 are respectively connected to the exhaust connecting pipe group 81. Inside a single solid-state hydrogen storage module 3, the flue gas flow path is as follows:

[0068] The corresponding flue gas connecting pipe groups 80 are respectively equipped with the fifth pipe group, the sixth pipe group, the seventh pipe group and the eighth pipe group, the end of the fifth pipe group is connected to the flue gas inlet of the flue gas heat exchange pipe 313 in the first solid-state hydrogen storage unit 31, the end of the sixth pipe group is connected to the flue gas inlet of the flue gas heat exchange pipe 313 in the second solid-state hydrogen storage unit 32, the end of the seventh pipe group is connected to the flue gas inlet of the flue gas heat exchange pipe 313 in the third solid-state hydrogen storage unit 33, and the end of the eighth pipe group is connected to the flue gas inlet of the flue gas heat exchange pipe 313 in the fourth solid-state hydrogen storage unit 34; the corresponding exhaust connecting pipe groups 81 are respectively equipped with the ninth pipe group, the tenth pipe group, the eleventh pipe group and the twelfth pipe group, the end of the ninth pipe group is connected to the flue gas outlet of the flue gas heat exchange pipe 313 in the first solid-state hydrogen storage unit 31, the end of the tenth pipe group is connected to the flue gas outlet of the flue gas heat exchange pipe 313 in the second solid-state hydrogen storage unit 32 The flue gas heat exchange pipe 313 is connected to the flue gas outlet, the end of the eleventh pipe group is connected to the flue gas outlet of the flue gas heat exchange pipe 313 in the third solid-state hydrogen storage unit 33, and the end of the twelfth pipe group is connected to the flue gas outlet of the flue gas heat exchange pipe 313 in the fourth solid-state hydrogen storage unit 34; thereby, the flue gas discharged from the hydrogen gas turbine 1 enters the corresponding flue gas connecting pipe group 80 through the flue gas main pipe 8, and then enters the corresponding flue gas heat exchange pipe 313 through the corresponding fifth pipe group, sixth pipe group, seventh pipe group and eighth pipe group respectively. During the process of flowing in the corresponding flue gas heat exchange pipe 313, the corresponding storage tank 311 is heated. Thereafter, the flue gas in the four flue gas heat exchange pipes 313 enters the corresponding exhaust connecting pipe group 81 through the ninth pipe group, the tenth pipe group, the eleventh pipe group and the twelfth pipe group, and is discharged into the atmosphere through the exhaust connecting pipe group 81;

[0069] The connection relationship between the two solid-state hydrogen storage modules 3 and the corresponding second heat exchanger 52, the corresponding heating furnace 53, and the cooling tower 54 is as follows:

[0070] The second heat exchange outlets of the two solid-state hydrogen storage modules 3 are connected to the first inlets of the corresponding second heat exchangers 52 through the two first heat exchange tube groups 93, the first outlets of the two second heat exchangers 52 are connected to the oil inlets of the corresponding heating furnaces 53 through the two first connecting tube groups, and the oil outlets of the two heating furnaces 53 are connected to the second heat exchange inlets of the corresponding solid-state hydrogen storage modules 3 through the two second heat exchange tube groups 94;

[0071] The second inlets of the two second heat exchangers 52 are connected to the first cooling pipe group 91 through two second connecting pipe groups, and the ends of the first cooling pipe group 91 are connected to the cooling water outlet of the cooling tower 54. The second outlets of the two second heat exchangers 52 are connected to the second cooling pipe group 92 through two third connecting pipe groups, and the ends of the second cooling pipe group 92 are connected to the cooling water inlet of the cooling tower 54.

[0072] The second heat exchange outlet of a single solid-state hydrogen storage module 3 corresponds to the outlet of each heat transfer liquid heat exchange pipe 315 inside the module, and the second heat exchange inlet of a single solid-state hydrogen storage module 3 corresponds to the inlet of each heat transfer liquid heat exchange pipe 315 inside the module; inside a single solid-state hydrogen storage module 3, the heat transfer oil flow path is as follows:

[0073] The corresponding first heat exchange tube group 93 is respectively connected to the thirteenth tube group, the fourteenth tube group, the fifteenth tube group, and the sixteenth tube group. The end of the thirteenth tube group is connected to the outlet of the heat transfer liquid heat exchange tube 315 in the first solid-state hydrogen storage unit 31, the end of the fourteenth tube group is connected to the outlet of the heat transfer liquid heat exchange tube 315 in the second solid-state hydrogen storage unit 32, the end of the fifteenth tube group is connected to the outlet of the heat transfer liquid heat exchange tube 315 in the third solid-state hydrogen storage unit 33, and the end of the sixteenth tube group is connected to the outlet of the heat transfer liquid heat exchange tube 315 in the fourth solid-state hydrogen storage unit 34; the corresponding second heat exchange tube group 94 is respectively connected to the seventeenth tube group, the eighteenth tube group, the nineteenth tube group, and the twentieth tube group. The end of the seventeenth tube group is connected to The inlet of the heat transfer liquid heat exchange tube 315 in the first solid-state hydrogen storage unit 31 is connected, the end of the eighteenth tube group is connected to the inlet of the heat transfer liquid heat exchange tube 315 in the second solid-state hydrogen storage unit 32, the end of the nineteenth tube group is connected to the inlet of the heat transfer liquid heat exchange tube 315 in the third solid-state hydrogen storage unit 33, and the end of the twentieth tube group is connected to the inlet of the heat transfer liquid heat exchange tube 315 in the fourth solid-state hydrogen storage unit 34; the heat transfer oil flows into the corresponding four heat transfer liquid heat exchange tubes 315 through the second heat exchange tube group 94 and the seventeenth tube group, the eighteenth tube group, the nineteenth tube group, and the twentieth tube group respectively, and after heat exchange, flows out through the first heat exchange tube group 93 through the thirteenth tube group, the fourteenth tube group, the fifteenth tube group, and the sixteenth tube group respectively.

[0074] Example 2:

[0075] like Figure 3-Figure 4 As shown, the difference between this embodiment and the first embodiment is that: in order to ensure the temperature stability inside the solid-state hydrogen storage module 3 during the stable hydrogen absorption process, the flue gas main pipe 8 is further connected to the air outlet of the air pump 10 through a pipeline; during the stable hydrogen absorption process of the two solid-state hydrogen storage modules 3, the air pump 10 sequentially introduces air into the corresponding solid-state hydrogen storage unit through the pipeline, the flue gas main pipe 8, and the two flue gas connecting pipe groups 80. In a single solid-state hydrogen storage unit, the cooling air takes away the heat released by the solid-state hydrogen storage material during hydrogen absorption through the corresponding flue gas heat exchange pipe 313, and is finally discharged through the corresponding exhaust connecting pipe group 81;

[0076] In addition, the structure of the solid-state hydrogen storage unit in this embodiment is the same. For a single solid-state hydrogen storage unit, its structure is: it includes a storage tank 311, and an insulation layer 312 is installed on the outside of the storage tank 311. A flue gas heat exchange pipe 313 and an electric heating pipe 314 are installed between the insulation layer 312 and the storage tank 311; in this embodiment, the electric heating pipe 314 is energized to generate heat. Therefore, during the startup stage of hydrogen absorption and the hydrogen filling process of the solid-state hydrogen storage module 3, auxiliary heating is performed through the electric heating pipe 314, so there is no need to set up a heat exchange module 5, which can further compact the structure and reduce production costs.

[0077] Example 3:

[0078] like Figure 6-Figure 7 As shown, the difference between this embodiment and the first embodiment is that: in this embodiment, the flue gas connecting pipe group 80 and the exhaust connecting pipe group 81 are not provided, the first heat exchanger 51 is arranged at the front end of the two second heat exchangers 52 respectively, and an exhaust main pipe 82 is also included;

[0079] Furthermore, the structure of the solid-state hydrogen storage unit in this embodiment is the same. For a single solid-state hydrogen storage unit, its structure is as follows: including a storage tank 311, an insulation layer 312 is installed on the outside of the storage tank 311, and a heat transfer liquid heat exchange pipe 315 is installed between the insulation layer 312 and the storage tank 311;

[0080] In this embodiment, the connection relationship between the flue gas main 8 and the heat exchange module 5 is as follows:

[0081] The flue gas main pipe 8 is equipped with two symmetrically arranged fourth connecting pipe groups. The ends of the two fourth connecting pipe groups are connected to the first inlets of the two first heat exchangers 51 respectively. The first outlets of the two first heat exchangers 51 are connected to the exhaust main pipe 82 through the fifth connecting pipe group.

[0082] The second inlets of the two first heat exchangers 51 are connected to the outlets of the heat transfer liquid heat exchange pipes 315 in the two solid hydrogen storage modules 3 through the first heat exchange tube group 93; the second outlets of the two first heat exchangers 51 are connected to the first inlets of the corresponding second heat exchangers 52 through the two sixth connecting tube groups;

[0083] As a result, the flue gas emitted by the hydrogen gas turbine 1 enters the corresponding first heat exchanger 51 through the flue gas main pipe 8 and the two fourth connecting pipe groups to exchange heat with the heat transfer oil. After the heat exchange is completed, the flue gas is discharged through the two fifth connecting pipe groups and the exhaust main pipe 82.

[0084] In the present invention, the hydrogen supply main pipe 6, the flue gas main pipe 8, the hydrogen supply connecting pipe group 60, the first hydrogen supply pipe group 61, the second hydrogen supply pipe group 62, the flue gas connecting pipe group 80, the exhaust connecting pipe group 81, the exhaust main pipe 82, the first cooling pipe group 91, the second cooling pipe group 92, the first heat exchange pipe group 93, the second heat exchange pipe group 94 and other pipe groups can be formed by splicing several short pipes or in the form of long pipes according to specific usage requirements and installation requirements; in addition, each pipeline is equipped with a corresponding control valve assembly, which is configured according to actual production requirements to control the on-off of the corresponding pipe group.

[0085] The present invention provides a solid-state hydrogen storage system based on a hydrogen gas turbine. By providing a solid-state hydrogen storage module 3, it can stably release hydrogen to provide it to the hydrogen gas turbine 1 for operation. At the same time, the heat required for releasing the hydrogen can be provided by the flue gas generated when the hydrogen gas turbine 1 is working, thereby improving energy utilization and reducing energy consumption. In addition, the solid-state hydrogen storage material has a high hydrogen storage density. After completing one hydrogen filling, it can stably provide hydrogen to the hydrogen gas turbine 1 for a long time, facilitating the long-term continuous and stable operation of the hydrogen gas turbine 1.

[0086] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any modifications may be made within the scope of protection of the present invention.

Claims

1. A solid-state hydrogen storage system based on a hydrogen gas turbine, characterized by: The invention comprises at least one solid-state hydrogen storage module (3), wherein the gas port of a single solid-state hydrogen storage module (3) is connected to a hydrogen supply main pipe (6) via a hydrogen supply connecting pipe group (60), the hydrogen supply main pipe (6) is further connected to the hydrogen inlet of a buffer tank (2) via a first hydrogen supply pipe group (61), the hydrogen outlet of the buffer tank (2) is connected to the hydrogen inlet of a hydrogen gas turbine (1) via a second hydrogen supply pipe group (62), the hydrogen supply main pipe (6) is connected to a hydrogen gas source, and the hydrogen gas source provides hydrogen to the solid-state hydrogen storage module (3) and / or the buffer tank (2) respectively via the hydrogen supply main pipe (6); A solid-state hydrogen storage material is provided inside a single solid-state hydrogen storage module (3), and the corresponding solid-state hydrogen storage module (3) absorbs or releases hydrogen through the solid-state hydrogen storage material; When a single solid-state hydrogen storage module (3) releases hydrogen, hydrogen is supplied to the hydrogen gas turbine (1) in sequence through the corresponding hydrogen supply connecting pipe group (60), the hydrogen supply main pipe (6), the first hydrogen supply pipe group (61), the buffer tank (2), and the second hydrogen supply pipe group (62). The hydrogen inside the hydrogen gas turbine (1) burns to convert chemical energy into mechanical energy and generates flue gas. The flue gas heats each solid-state hydrogen storage module (3) through direct heat exchange or indirect heat exchange.

2. The solid-state hydrogen storage system based on a hydrogen gas turbine according to claim 1, characterized in that: The invention also includes a heat exchange module (5), wherein the heat exchange module (5) includes a heat exchanger assembly arranged in a one-to-one correspondence with the solid-state hydrogen storage module (3), a first heat exchange medium and a second heat exchange medium flowing in reverse in the heat exchange assembly, the first heat exchange medium being heated by a heating furnace (53), and the second heat exchange medium being cooled by a cooling tower (54).

3. The solid-state hydrogen storage system based on a hydrogen gas turbine according to claim 2, characterized in that: The tail gas discharge port of the hydrogen gas turbine (1) is connected to the flue gas main (8); When a direct heat exchange method is used, the first heat exchange inlet of a single solid-state hydrogen storage module (3) is connected to the flue gas main pipe (8) via a flue gas connecting pipe group (80), and the first heat exchange outlet of the single solid-state hydrogen storage module (3) is connected to an exhaust gas connecting pipe group (81), thereby directly heating the solid-state hydrogen storage module (3) via flue gas. When an indirect heat exchange method is adopted, the flue gas main pipe (8) is connected to the first heat exchange inlet of the heat exchange component, so that the first heat exchange medium in the heat exchange component is heated by the flue gas, and then the solid hydrogen storage module (3) is indirectly heated by the first heat exchange medium.

4. The solid-state hydrogen storage system based on a hydrogen gas turbine according to claim 3, characterized in that: When an indirect heat exchange method is adopted, the first heat exchange outlet of the heat exchange component is connected to an exhaust pipe (82), and the flue gas is discharged through the exhaust pipe (82) after exchanging heat with the first heat exchange medium.

5. The solid-state hydrogen storage system based on a hydrogen gas turbine according to claim 3, characterized in that: When an indirect heat exchange method is adopted, the heat exchange assembly includes a first heat exchanger (51) and a second heat exchanger (52) connected in series; Flue gas and a first heat exchange medium flow in opposite directions in the first heat exchanger (51), so that the flue gas and the first heat exchange medium exchange heat in the first heat exchanger (51); A first heat exchange medium and a second heat exchange medium flow in counter-current in the second heat exchanger (52), so that the first heat exchange medium is cooled by the second heat exchange medium in the second heat exchanger (52).

6. The solid-state hydrogen storage system based on a hydrogen gas turbine according to claim 3, characterized in that: When a direct heat exchange method is adopted, a single solid-state hydrogen storage module (3) is auxiliary heated by a heat exchange module (5) or an electric heating tube (314).

7. The solid-state hydrogen storage system based on a hydrogen gas turbine according to claim 1, characterized in that: A one-way valve is installed on the hydrogen supply main pipe (6).

8. The solid-state hydrogen storage system based on a hydrogen gas turbine according to claim 1, characterized in that: A single solid-state hydrogen storage module (3) comprises at least one solid-state hydrogen storage unit. The structure of the single solid-state hydrogen storage unit is as follows: comprising a storage tank (311), the interior of the storage tank (311) is filled with a solid-state hydrogen storage material, an outer wall surface of the storage tank (311) is fitted with a thermal insulation layer (312), and a heating component is provided between the outer wall surface of the storage tank (311) and the thermal insulation layer (312).

9. The solid-state hydrogen storage system based on a hydrogen gas turbine according to claim 8, characterized in that: The heating component adopts a heat transfer liquid heat exchange pipe (315) and / or a flue gas heat exchange pipe (313).

10. The solid-state hydrogen storage system based on a hydrogen gas turbine according to claim 1, characterized in that: A booster pump (4) is mounted on the first hydrogen supply pipe group (61).

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