Hydrogen energy power generation system based on hydrogen internal combustion engine tail gas waste heat utilization

Abstract

The hydrogen energy power generation system comprises the hydrogen internal combustion engine, the output end of the hydrogen internal combustion engine is connected with the input end of a generator, and the output end of the generator is connected with a storage battery. A tail gas exhaust port of the hydrogen internal combustion engine is connected with the solid hydrogen storage module in a matched mode through the heat exchange module, and when hydrogen in the hydrogen internal combustion engine burns, heat contained in generated high-temperature tail gas is transmitted to the solid hydrogen storage module through the heat exchange module, so that a solid hydrogen storage material in the solid hydrogen storage module is heated; further, the solid hydrogen storage material releases hydrogen; a hydrogen inlet of the hydrogen internal combustion engine is connected with a first hydrogen discharge port of the hydrogen buffer tank, and a hydrogen inlet of the hydrogen buffer tank is connected with a hydrogen discharge port of the solid hydrogen storage module. By arranging the heat exchange module, high-temperature tail gas generated by the hydrogen internal combustion engine can be recycled, efficient and stable hydrogen absorption and desorption can be achieved while stable power generation is conducted, and the system is stable in operation, high in safety, high in energy utilization rate, efficient, energy-saving and environmentally friendly.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen energy, in particular to a hydrogen energy power generation system based on the utilization of waste heat from exhaust gas of a hydrogen internal combustion engine. Background Art

[0002] As a clean and efficient way to utilize energy, hydrogen power generation systems are widely used in transportation, industry, energy storage, construction, and other fields. With the continuous advancement of technology and the promotion of its application, hydrogen power generation systems will play an even more important role in the future energy system.

[0003] In existing technologies, hydrogen power generation systems typically generate electricity using hydrogen fuel cells. To ensure system safety, hydrogen is typically stored in solid-state hydrogen storage materials. When hydrogen is needed, the metal hydride releases hydrogen to supply the fuel cell by satisfying its dehydrogenation requirements. However, because metal hydrides require a high level of heat to dehydrogenate, an additional heat source is required to provide this energy, resulting in high energy consumption and resource waste. Furthermore, the electrochemical reaction in hydrogen fuel cells generates excess heat, which cannot meet the energy requirements for dehydrogenation from magnesium-based hydrides, making it difficult to recycle and reuse, further wasting energy. Utility Model Content

[0004] In response to the shortcomings of the above-mentioned existing production technologies, the applicant provides a hydrogen power generation system based on the utilization of waste heat from exhaust gas of a hydrogen internal combustion engine. By setting up a heat exchange module, the high-temperature exhaust gas generated by the hydrogen internal combustion engine can be recycled and utilized, and efficient and stable hydrogen absorption and release can be achieved while performing stable power generation. The system has stable operation, high safety, high energy utilization, high efficiency, energy saving, and environmental protection.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A hydrogen power generation system based on utilizing waste heat from exhaust gas of a hydrogen internal combustion engine, comprising a hydrogen internal combustion engine, wherein the output end of the hydrogen internal combustion engine is connected to the input end of a generator, and the output end of the generator is connected to a battery. The hydrogen inside the hydrogen internal combustion engine burns to drive the generator to generate electricity, and the electricity generated by the generator is stored in the battery.

[0007] The exhaust outlet of the hydrogen internal combustion engine is connected to the solid-state hydrogen storage module through a heat exchange module. When the hydrogen inside the hydrogen internal combustion engine burns, the high-temperature exhaust gas generated transfers the heat contained in the high-temperature exhaust gas to the solid-state hydrogen storage module through the heat exchange module, thereby heating the solid-state hydrogen storage material in the solid-state hydrogen storage module, and then causing the solid-state hydrogen storage material to release hydrogen;

[0008] The hydrogen inlet of the hydrogen internal combustion engine is connected to the first hydrogen discharge port of the hydrogen buffer tank, and the hydrogen inlet of the hydrogen buffer tank is connected to the hydrogen discharge port of the solid-state hydrogen storage module. The hydrogen released by the solid-state hydrogen storage material in the solid-state hydrogen storage module is temporarily stored in the hydrogen buffer tank, and hydrogen is provided to the hydrogen internal combustion engine through the hydrogen buffer tank.

[0009] As a further improvement of the above technical solution:

[0010] The heat exchange module adopts a direct heat exchange module, which includes a first heat exchange tube group for connecting the exhaust gas outlet of the hydrogen internal combustion engine and the heat transfer medium inlet of the solid-state hydrogen storage module, and a second heat exchange tube group installed at the heat transfer medium outlet of the solid-state hydrogen storage module. The second heat exchange tube group is equipped with a first exhaust gas treatment device.

[0011] The heat exchange module adopts an indirect heat exchange module, which includes a first liquid tank, a first outlet of the first liquid tank is connected to the heat transfer medium inlet of the solid hydrogen storage module through a first tube group, and a first inlet of the first liquid tank is connected to the heat transfer medium outlet of the solid hydrogen storage module through a second tube group;

[0012] The first tube group is provided with a first branch pipe and a second branch pipe at intervals, the end of the first branch pipe is connected to the first inlet of the first heat exchanger, and the end of the second branch pipe is connected to the first outlet of the first heat exchanger;

[0013] The second inlet of the first heat exchanger is connected to the exhaust outlet of the hydrogen internal combustion engine through an air intake pipe group, and the second outlet of the first heat exchanger is equipped with an exhaust pipe group;

[0014] A first valve is installed on the first pipe group between the first branch pipe and the second branch pipe. When the first valve is closed, the high-temperature exhaust gas discharged by the hydrogen internal combustion engine enters the first heat exchanger through the intake pipe group and exchanges heat with the heat-conducting medium in the first heat exchanger. The heat-conducting medium that has undergone heat exchange enters the solid-state hydrogen storage module through the second branch pipe and the first pipe group in sequence for secondary heat exchange. The heat-conducting medium that has undergone secondary heat exchange flows into the first liquid tank through the second pipe group.

[0015] The indirect heat exchange module further includes a refrigeration unit, which is cooperatively connected to the first liquid tank to cool the heat transfer medium in the first liquid tank.

[0016] The hydrogen outlet of the solid-state hydrogen storage module is connected to the hydrogen inlet of the hydrogen buffer tank through a first hydrogen transmission pipe group.

[0017] The first hydrogen discharge port of the hydrogen buffer tank is connected to the hydrogen inlet of the hydrogen internal combustion engine through a second hydrogen transmission pipe group.

[0018] The hydrogen inlet of the solid-state hydrogen storage module is equipped with a hydrogen filling tube group.

[0019] The battery is electrically connected to the emergency power supply module, and the battery provides emergency power supply to the outside through the emergency power supply module.

[0020] The second hydrogen discharge port of the hydrogen buffer tank is connected to the hydrogen inlet of the hydrogen filling module through the third hydrogen transmission pipe group. The hydrogen filling module is electrically connected to the battery. Under the driving action of the battery, the hydrogen filling module fills the hydrogen in the hydrogen buffer tank to the user end.

[0021] The hydrogen filling module includes a cooler, a compressor and a hydrogenator connected in series.

[0022] The beneficial effects of the utility model are as follows:

[0023] The utility model has a compact and reasonable structure and is easy to operate. By arranging a hydrogen internal combustion engine and a heat exchanger, it can recycle the heat energy generated in the process of generating electricity by the hydrogen internal combustion engine driving the generator, thereby realizing comprehensive and efficient utilization of energy; at the same time, it can provide the heat required for hydrogen release for the magnesium-based hydrogen storage material, realizing efficient and stable hydrogen release of the system. It has the characteristics of mobility, convenience, emergency, safety, and multi-scenario use. It can be flexibly used under different working conditions, and is convenient for hydrogen-loaded vehicles and hydrogen ships to be refueled, emergency power supply and rescue work. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the present utility model.

[0025] Figure 2 This is a structural diagram of Example 1 of the present utility model.

[0026] Figure 3 This is a structural diagram of Example 2 of the present utility model.

[0027] Among them: 1. Battery; 2. Generator; 3. Hydrogen internal combustion engine; 4. Safety valve; 5. Solid-state hydrogen storage module; 6. Hydrogen buffer tank; 7. Hydrogen charging pipe group; 8. Pressure relief pipe group; 9. Heat exchange module; 10. Hydrogen filling module; 11. First hydrogen transmission pipe group; 12. Second hydrogen transmission pipe group; 13. Third hydrogen transmission pipe group;

[0028] 91. Direct heat exchange module; 92. Indirect heat exchange module;

[0029] 910, first tail gas treatment device; 911, first heat exchange tube group; 912, second heat exchange tube group;

[0030] 920, intake pipe group; 921, first pipe group; 922, second pipe group; 923, third pipe group; 924, fourth pipe group; 925, fifth pipe group; 926, sixth pipe group; 927, first branch pipe; 928, second branch pipe; 929, exhaust pipe group; 930, second exhaust gas treatment device; 931, first heat exchanger; 932, second heat exchanger; 933, first liquid tank; 934, second liquid tank; 935, drive pump. DETAILED DESCRIPTION

[0031] The specific implementation of the present utility model will be described below with reference to the accompanying drawings.

[0032] The structure and functions of this utility model are as follows:

[0033] like Figure 1-Figure 3 As shown, a hydrogen power generation system based on the utilization of waste heat from exhaust gas of a hydrogen internal combustion engine includes a hydrogen internal combustion engine 3, the output end of the hydrogen internal combustion engine 3 is connected to the input end of a generator 2, the output end of the generator 2 is connected to a battery 1, the hydrogen inside the hydrogen internal combustion engine 3 burns to drive the generator 2 to generate electricity, and the electricity generated by the generator 2 is stored in the battery 1; the exhaust outlet of the hydrogen internal combustion engine 3 is connected to the solid-state hydrogen storage module 5 through a heat exchange module 9, when the hydrogen inside the hydrogen internal combustion engine 3 burns, the high-temperature exhaust gas generated is transferred to the solid-state hydrogen storage module 5 through the heat exchange module 9, thereby heating the solid-state hydrogen storage material in the solid-state hydrogen storage module 5, and then causing the solid-state hydrogen storage material to release hydrogen; the hydrogen inlet of the hydrogen internal combustion engine 3 is connected to the first hydrogen discharge port of the hydrogen buffer tank 6, the hydrogen inlet of the hydrogen buffer tank 6 is connected to the hydrogen discharge port of the solid-state hydrogen storage module 5, the hydrogen released by the solid-state hydrogen storage material in the solid-state hydrogen storage module 5 is temporarily stored in the hydrogen buffer tank 6, and hydrogen is provided to the hydrogen internal combustion engine 3 through the hydrogen buffer tank 6.

[0034] The cycle power generation system of the utility model includes a battery 1, a generator 2, a hydrogen internal combustion engine 3, a solid hydrogen storage module 5, a hydrogen buffer tank 6, a heat exchange module 9,

[0035] Battery 1 is used to store the electrical energy generated by generator 2 and output it. Battery 1 can not only power the internal equipment of the system (including the hydrogen refueling machine), but also power the external equipment of the system (including the power system of hydrogen vehicles or hydrogen ships, and other electrical equipment):

[0036] The cycle power generation system can be mounted on a hydrogen vehicle or hydrogen ship, and supply power to the corresponding hydrogen vehicle or hydrogen ship through the battery 1 to achieve the traction function of the hydrogen vehicle or ship;

[0037] The battery 1 is electrically connected to the emergency power supply module. The battery 1 provides emergency power to the outside through the emergency power supply module. The emergency power supply module is used to convert the DC power input by the battery 1 into DC power or AC power of the amplitude and frequency required by the external device, so as to realize the emergency power supply function of the system to the external device.

[0038] The second hydrogen outlet of the hydrogen buffer tank 6 is connected to the hydrogen inlet of the hydrogen filling module 10 through the third hydrogen transmission pipe group 13. The hydrogen filling module 10 is electrically connected to the battery 1. Under the driving action of the battery 1, the hydrogen filling module 10 fills the hydrogen in the hydrogen buffer tank 6 to the user end. By setting up the hydrogen filling module 10, the system can realize the function of hydrogen filling to the outside.

[0039] In the present invention, the hydrogen filling module 10 includes a cooler, a compressor and a hydrogenator connected in series in sequence; the cooler cools the hydrogen in the hydrogen buffer tank 6, compresses and pressurizes it through the compressor, and then fills it to the user end through the hydrogenator.

[0040] The generator 2 is connected to the output end of the hydrogen internal combustion engine 3 . The generator 2 converts the mechanical energy generated by the hydrogen internal combustion engine 3 into electrical energy and outputs the electrical energy to the battery 1 .

[0041] The hydrogen internal combustion engine 3 uses hydrogen as input and can convert the heat energy generated by the internal hydrogen combustion into mechanical energy and output it to the generator 2. When the hydrogen inside the hydrogen internal combustion engine 3 burns, a large amount of heat is generated. The high-temperature exhaust gas carries part of the heat and transfers it to the solid hydrogen storage module 5 through the heat exchange module 9.

[0042] The hydrogen internal combustion engine 3 introduces external air into the interior thereof through a valve mechanism. The valve mechanism is a prior art and will not be described in detail here.

[0043] The heat exchange module 9 is used for heat transfer. At least one heat-conducting medium flows inside the heat exchange module 9, and the heat of the high-temperature exhaust gas generated by the hydrogen internal combustion engine 3 is transferred to the solid hydrogen storage module 5 through the heat-conducting medium.

[0044] The heat exchange module 9 adopts a direct heat exchange module 91 or an indirect heat exchange module 92; a heat conducting medium, namely high-temperature exhaust gas, flows inside the direct heat exchange module 91, which directly transports the high-temperature exhaust gas generated by the hydrogen internal combustion engine 3 to the solid hydrogen storage module 5 to heat the solid hydrogen storage material therein;

[0045] There are two heat transfer media flowing inside the indirect heat exchange module 92, namely high-temperature exhaust gas and heat transfer liquid. It first performs heat exchange between the high-temperature exhaust gas and the heat transfer liquid, and heats the heat transfer liquid by the high-temperature exhaust gas. Then, the heat transfer liquid and the solid-state hydrogen storage module 5 perform a secondary heat exchange, and the solid-state hydrogen storage module 5 is heated by the heated heat transfer liquid.

[0046] The structure of the solid-state hydrogen storage module 5 includes a storage tank with solid-state hydrogen storage material placed inside, and a heat exchange tube for transmitting a heat-conducting medium. The heat exchange tube is installed on the outside or inside of the storage tank. The outside of the storage tank is also provided with an insulation layer for heat preservation. In the present utility model, the solid-state hydrogen storage material adopts magnesium-based hydrogen storage material.

[0047] The hydrogen inlet of the solid-state hydrogen storage module 5 is equipped with a hydrogen charging pipe group 7, through which hydrogen is introduced into the solid-state hydrogen storage module 5. The hydrogen charging pipe group 7 is equipped with a one-way valve and a valve component for controlling its on and off. External hydrogen is introduced into the storage tank of the solid-state hydrogen storage module 5 through the hydrogen charging pipe group 7 and is stored in the solid-state hydrogen storage material.

[0048] In addition, if Figure 1 As shown, the hydrogen filling pipe group 7 is connected to the hydrogen inlet of the hydrogen buffer tank 6 through the connecting pipe group. The connecting pipe group is equipped with a pressure relief pipe group 8, and the pressure relief pipe group 8 is equipped with a safety valve 4 to prevent the pressure in the hydrogen buffer tank 6 from being too high.

[0049] The hydrogen buffer tank 6 is used to store a certain amount of gaseous hydrogen to ensure the continuous and stable operation of the system.

[0050] The hydrogen outlet of the solid-state hydrogen storage module 5 is connected to the hydrogen inlet of the hydrogen buffer tank 6 through the first hydrogen transmission pipe group 11; the first hydrogen outlet of the hydrogen buffer tank 6 is connected to the hydrogen inlet of the hydrogen internal combustion engine 3 through the second hydrogen transmission pipe group 12;

[0051] The high-temperature exhaust gas causes the internal temperature of the storage tank in the solid-state hydrogen storage module 5 to reach the hydrogen release temperature of the solid-state hydrogen storage material (about 280°C), thereby causing the solid-state hydrogen storage material to release hydrogen. The released hydrogen enters the hydrogen buffer tank 6 through the first hydrogen transmission pipe group 11 and is temporarily stored. The hydrogen in the hydrogen buffer tank 6 is then transported to the hydrogen internal combustion engine 3 through the second hydrogen transmission pipe group 12; the second hydrogen transmission pipe group 12 is also equipped with a one-way valve and a valve component.

[0052] The following is the specific embodiment section.

[0053] Example 1:

[0054] like Figure 2 As shown, the heat exchange module 9 adopts a direct heat exchange module 91, which includes a first heat exchange tube group 911 for connecting the exhaust gas outlet of the hydrogen internal combustion engine 3 and the heat transfer medium inlet of the solid-state hydrogen storage module 5, and a second heat exchange tube group 912 installed at the heat transfer medium outlet of the solid-state hydrogen storage module 5. The second heat exchange tube group 912 is equipped with a first exhaust gas treatment device 910; the high-temperature exhaust gas enters the solid-state hydrogen storage module 5 through the first heat exchange tube group 911 for direct heat exchange, and the high-temperature exhaust gas after heat exchange is discharged through the second heat exchange tube group 912.

[0055] The working process of this embodiment is as follows:

[0056] First, hydrogen is delivered to the hydrogen internal combustion engine 3 through the hydrogen buffer tank 6. The hydrogen inside the hydrogen internal combustion engine 3 burns to produce high-temperature exhaust gas with a temperature of 400°C-600°C.

[0057] Subsequently, the high-temperature exhaust gas enters the heat exchange tubes of the solid-state hydrogen storage module 5 through the first heat exchange tube group 911, and is heat-exchanged to obtain low-temperature exhaust gas. The temperature of the low-temperature exhaust gas is 280°C-300°C, thereby causing the solid-state hydrogen storage material in the storage tank of the solid-state hydrogen storage module 5 to release hydrogen. The released hydrogen enters the hydrogen buffer tank 6 through the first hydrogen transmission tube group 11 for temporary storage.

[0058] When the hydrogen internal combustion engine 3 needs hydrogen input, the valve on the second hydrogen transmission pipe group 12 is opened to allow the hydrogen in the hydrogen buffer tank 6 to be transported to the hydrogen internal combustion engine 3;

[0059] Finally, the low-temperature exhaust gas passes through the first exhaust gas treatment device 910 to remove nitrogen oxides and is then discharged into the atmosphere.

[0060] Example 2:

[0061] like Figure 3 As shown, the heat exchange module 9 adopts an indirect heat exchange module 92, which includes a first liquid tank 933. The first outlet of the first liquid tank 933 is connected to the heat transfer medium inlet of the solid hydrogen storage module 5 through a first pipe group 921, and the first inlet of the first liquid tank 933 is connected to the heat transfer medium outlet of the solid hydrogen storage module 5 through a second pipe group 922; the first pipe group 921 is equipped with a first branch pipe 927 and a second branch pipe 928 at intervals, the end of the first branch pipe 927 is connected to the first inlet of the first heat exchanger 931, and the end of the second branch pipe 928 is connected to the first outlet of the first heat exchanger 931; the second inlet of the first heat exchanger 931 is connected to the exhaust outlet of the hydrogen internal combustion engine 3 through the intake pipe group 920, and the second outlet of the first heat exchanger 931 is equipped with an exhaust pipe group 929; the first pipe group 92 between the first branch pipe 927 and the second branch pipe 928 1 is equipped with a first valve. When the first valve is closed, the high-temperature exhaust gas discharged by the hydrogen internal combustion engine 3 enters the first heat exchanger 931 through the intake pipe group 920, and exchanges heat with the heat-conducting medium in the first heat exchanger 931. The heat-conducting medium after heat exchange enters the solid hydrogen storage module 5 through the second branch pipe 928 and the first pipe group 921 for secondary heat exchange. The heat-conducting medium after secondary heat exchange flows into the first liquid tank 933 through the second pipe group 922; the first liquid tank 933 contains a heat-conducting liquid, which enters the first heat exchanger 931 through the first pipe group 921 and the first branch pipe 927 in sequence. The high-temperature exhaust gas enters the first heat exchanger 931 through the intake pipe group 920 to exchange heat with the heat-conducting liquid. The heat-conducting liquid after heat exchange enters the solid hydrogen storage module 5 through the second branch pipe 928 and the first pipe group 921, thereby heating the solid hydrogen storage material in the solid hydrogen storage module 5.

[0062] The indirect heat exchange module 92 further includes a refrigeration unit, which is connected to the first liquid tank 933 to cool the heat transfer medium in the first liquid tank 933; the refrigeration unit includes a second heat exchanger 932, a first outlet of the second heat exchanger 932 is connected to the second inlet of the first liquid tank 933 through a third tube group 923, a first inlet of the second heat exchanger 932 is connected to the second outlet of the first liquid tank 933 through a fourth tube group 924, and a second inlet of the second heat exchanger 932 is connected to the second outlet of the first liquid tank 933 through a fifth tube group 925. The first liquid tank 933 is connected to the liquid outlet of the second liquid tank 934, and the second outlet of the second heat exchanger 932 is connected to the liquid inlet of the second liquid tank 934 through the sixth tube group 926; the heat transfer liquid in the solid hydrogen storage module 5 enters the first liquid tank 933 through the second tube group 922, and then enters the second heat exchanger 932 through the fourth tube group 924. The second liquid tank 934 contains coolant, which enters the second heat exchanger 932 through the fifth tube group 925, thereby exchanging heat with the heat transfer liquid in the second heat exchanger 932;

[0063] When the first valve is opened, the heat transfer oil in the first liquid tank 933 is cooled by heat exchange in the second heat exchanger 932 and then flows into the solid-state hydrogen storage module 5 through the first pipe group 921, thereby cooling the solid-state hydrogen storage module 5, and allowing the solid-state hydrogen storage material in the solid-state hydrogen storage module 5 to quickly absorb hydrogen.

[0064] In addition, the first tube group 921 is equipped with a driving pump 935 for driving the internal heat transfer fluid to circulate;

[0065] The tube group of this embodiment is equipped with a valve assembly, which includes a second valve equipped on the third tube group 923, a third valve equipped on the fourth tube group 924, a fourth valve equipped on the first branch pipe 927, and a fifth valve equipped on the second branch pipe 928.

[0066] The working process of this embodiment is as follows:

[0067] Including hydrogen charging process and filling process;

[0068] The hydrogen filling process refers to the process of replenishing hydrogen for a hydrogen energy power generation system based on the utilization of waste heat from exhaust gas of a hydrogen internal combustion engine of the present invention through an external hydrogen filling device (such as a fixed hydrogen filling station), and allowing the solid hydrogen storage material inside the solid hydrogen storage module 5 to absorb hydrogen quickly and stably. The fixed hydrogen filling station in this embodiment adopts a high-pressure gaseous hydrogen storage method;

[0069] The filling process refers to the process of releasing hydrogen from the solid-state hydrogen storage material inside the solid-state hydrogen storage module 5 and then filling hydrogen to the user end through the hydrogen filling module 10;

[0070] The hydrogen charging process includes the following steps:

[0071] First, connect the other liquid inlet of the second liquid tank 934 to a liquid outlet of the cooling system of the fixed hydrogen refueling station, and connect the other liquid outlet of the second liquid tank 934 to a liquid inlet of the cooling system of the fixed hydrogen refueling station;

[0072] Subsequently, the hydrogen internal combustion engine 3 is started, and the hydrogen in the hydrogen internal combustion engine 3 is burned to generate high-temperature exhaust gas (temperature is 400° C.-600° C.). The high-temperature exhaust gas is heat-exchanged in the first heat exchanger 931 , thereby heating the heat transfer fluid in the first heat exchanger 931 .

[0073] The heated heat transfer fluid enters the solid hydrogen storage module 5 through the second branch pipe 928 and the first pipe group 921 under the action of the driving pump 935, so that the temperature inside the solid hydrogen storage module 5 reaches the hydrogen charging temperature (280°C-320°C), and then the hydrogen internal combustion engine 3 stops;

[0074] Then, the fixed hydrogen filling station fills hydrogen into the solid hydrogen storage module 5 through the hydrogen filling pipe group 7. At this time, the solid hydrogen storage material in the solid hydrogen storage module 5 absorbs hydrogen and releases heat;

[0075] The first valve is closed, the second valve is opened, the third valve is opened, the fourth valve is closed, and the fifth valve is closed, so that the heat transfer fluid in the solid hydrogen storage module 5 flows into the second heat exchanger 932, and then the heat transfer fluid in the second heat exchanger 932 is cooled by the cooling system of the fixed hydrogen refueling station;

[0076] The cooled heat transfer liquid flows back to the solid hydrogen storage module 5 through the first tube group 921 under the action of the driving pump 935, so that the temperature inside the solid hydrogen storage module 5 is stably maintained at the hydrogen charging temperature;

[0077] The filling process includes the following steps:

[0078] Connect the hydrogen filling gun on the hydrogen filling machine in the hydrogen filling module 10 to the hydrogen filling port at the user end;

[0079] The hydrogen buffer tank 6 provides the hydrogen required for normal operation to the hydrogen internal combustion engine 3 through the second hydrogen transmission pipe group 12. The hydrogen internal combustion engine 3 starts, driving the generator 2 to generate electricity. The electricity generated by the generator 2 is stored in the battery 1, and the battery 1 provides stable power supply for the hydrogen filling module 10.

[0080] The high-temperature exhaust gas released by the hydrogen internal combustion engine 3 enters the first heat exchanger 931 through the intake pipe group 920 for heat exchange. After the heat exchange, the high-temperature exhaust gas passes through the second exhaust gas treatment device 930 to remove nitrogen oxides and is discharged into the atmosphere through the exhaust pipe group 929.

[0081] After heat exchange, the heat transfer oil in the first heat exchanger 931 enters the solid-state hydrogen storage module 5 through the second branch pipe 928 and the first pipe group 921, thereby heating the solid-state hydrogen storage module 5 to the hydrogen release temperature (300° C.-360° C.), causing the magnesium-based hydrogen storage material in the solid-state hydrogen storage module 5 to release hydrogen;

[0082] The hydrogen released from the magnesium-based hydrogen storage material in the solid-state hydrogen storage module 5 enters the hydrogen buffer tank 6 through the first hydrogen transmission pipe group 11. Part of the hydrogen in the hydrogen buffer tank 6 enters the hydrogen internal combustion engine 3 through the second hydrogen transmission pipe group 12, and the other part is filled to the user end through the third hydrogen transmission pipe group 13 under the action of the hydrogen filling module 10.

[0083] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the scope of protection of the utility model.

Claims

1. A hydrogen power generation system based on the utilization of waste heat from exhaust gas of a hydrogen internal combustion engine, characterized by: The invention comprises a hydrogen internal combustion engine (3), wherein the output end of the hydrogen internal combustion engine (3) is connected to the input end of a generator (2), the output end of the generator (2) is connected to a storage battery (1), hydrogen inside the hydrogen internal combustion engine (3) is burned to drive the generator (2) to generate electricity, and the electric energy generated by the generator (2) is stored in the storage battery (1); The tail gas outlet of the hydrogen internal combustion engine (3) is connected to the solid hydrogen storage module (5) via a heat exchange module (9); when hydrogen inside the hydrogen internal combustion engine (3) is burned, the high-temperature tail gas generated is transferred to the solid hydrogen storage module (5) via the heat exchange module (9), thereby heating the solid hydrogen storage material in the solid hydrogen storage module (5), and then causing the solid hydrogen storage material to release hydrogen; The hydrogen inlet of the hydrogen internal combustion engine (3) is connected to the first hydrogen outlet of the hydrogen buffer tank (6), and the hydrogen inlet of the hydrogen buffer tank (6) is connected to the hydrogen outlet of the solid-state hydrogen storage module (5). The hydrogen released by the solid-state hydrogen storage material in the solid-state hydrogen storage module (5) is temporarily stored in the hydrogen buffer tank (6), and hydrogen is provided to the hydrogen internal combustion engine (3) through the hydrogen buffer tank (6).

2. A hydrogen power generation system based on the utilization of waste heat from exhaust gas of a hydrogen internal combustion engine as claimed in claim 1, characterized in that: The heat exchange module (9) adopts a direct heat exchange module (91), which includes a first heat exchange tube group (911) for connecting the exhaust outlet of the hydrogen internal combustion engine (3) and the heat transfer medium inlet of the solid hydrogen storage module (5), and a second heat exchange tube group (912) equipped with the heat transfer medium outlet of the solid hydrogen storage module (5), and the second heat exchange tube group (912) is equipped with a first exhaust gas treatment device (910).

3. A hydrogen power generation system based on the utilization of waste heat from exhaust gas of a hydrogen internal combustion engine as claimed in claim 1, characterized in that: The heat exchange module (9) adopts an indirect heat exchange module (92), and the indirect heat exchange module (92) includes a first liquid tank (933), a first outlet of the first liquid tank (933) is connected to the heat transfer medium inlet of the solid hydrogen storage module (5) through a first tube group (921), and a first inlet of the first liquid tank (933) is connected to the heat transfer medium outlet of the solid hydrogen storage module (5) through a second tube group (922); The first tube group (921) is provided with a first branch tube (927) and a second branch tube (928) at intervals, the end of the first branch tube (927) being connected to the first inlet of the first heat exchanger (931), and the end of the second branch tube (928) being connected to the first outlet of the first heat exchanger (931); The second inlet of the first heat exchanger (931) is connected to the exhaust outlet of the hydrogen internal combustion engine (3) through the air intake pipe group (920), and the second outlet of the first heat exchanger (931) is equipped with an exhaust pipe group (929); A first valve is installed on the first pipe group (921) between the first branch pipe (927) and the second branch pipe (928). When the first valve is closed, the high-temperature exhaust gas discharged from the hydrogen internal combustion engine (3) enters the first heat exchanger (931) through the intake pipe group (920) and exchanges heat with the heat-conducting medium in the first heat exchanger (931). The heat-conducting medium after the heat exchange enters the solid hydrogen storage module (5) through the second branch pipe (928) and the first pipe group (921) in sequence for secondary heat exchange. The heat-conducting medium after the secondary heat exchange flows into the first liquid tank (933) through the second pipe group (922).

4. A hydrogen power generation system based on the utilization of waste heat from exhaust gas of a hydrogen internal combustion engine as claimed in claim 3, characterized in that: The indirect heat exchange module (92) further includes a refrigeration unit, which is cooperatively connected to the first liquid tank (933) to cool the heat-conducting medium in the first liquid tank (933).

5. The hydrogen power generation system based on the utilization of waste heat from exhaust gas of a hydrogen internal combustion engine according to claim 1, characterized in that: The hydrogen outlet of the solid-state hydrogen storage module (5) is connected to the hydrogen inlet of the hydrogen buffer tank (6) via a first hydrogen transmission pipe group (11).

6. The hydrogen power generation system based on the utilization of waste heat from exhaust gas of a hydrogen internal combustion engine according to claim 1, characterized in that: The first hydrogen discharge port of the hydrogen buffer tank (6) is connected to the hydrogen inlet of the hydrogen internal combustion engine (3) via a second hydrogen transmission pipe group (12).

7. The hydrogen power generation system based on the utilization of waste heat from exhaust gas of a hydrogen internal combustion engine as claimed in claim 1, characterized in that: The hydrogen inlet of the solid-state hydrogen storage module (5) is equipped with a hydrogen filling tube group (7).

8. The hydrogen power generation system based on the utilization of waste heat from exhaust gas of a hydrogen internal combustion engine as claimed in claim 1, characterized in that: The storage battery (1) is electrically connected to the emergency power supply module, and the storage battery (1) provides emergency power supply to the outside through the emergency power supply module.

9. A hydrogen power generation system based on utilization of waste heat from exhaust gas of a hydrogen internal combustion engine according to any one of claims 1 to 8, characterized in that: The second hydrogen discharge port of the hydrogen buffer tank (6) is connected to the hydrogen inlet of the hydrogen filling module (10) via the third hydrogen transmission pipe group (13); the hydrogen filling module (10) is electrically connected to the battery (1); and under the driving action of the battery (1), the hydrogen filling module (10) fills the hydrogen in the hydrogen buffer tank (6) to the user end.

10. A hydrogen power generation system based on utilization of waste heat from exhaust gas of a hydrogen internal combustion engine as claimed in claim 9, characterized in that: The hydrogen filling module (10) comprises a cooler, a compressor and a hydrogenator connected in series.

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