Regeneration device of solid hydrogen storage alloy

Abstract

The utility model belongs to the technical field of hydrogen storage alloy, and particularly relates to a solid hydrogen storage alloy regeneration device, which is of a tank body structure and comprises a discharge port, an upper end cover and a spiral pipe, the discharge port is arranged at the bottom of the tank body, the upper end cover is arranged at the top of the tank body, the spiral pipe is arranged in the tank body, and a medium is arranged in the spiral pipe. According to the regeneration device, performance regeneration of the hydrogen storage alloy is achieved, and the problem that regenerated hydrogen storage alloy powder is transferred again is solved.

Description

Technical Field

[0001] This utility model belongs to the field of hydrogen storage alloy technology, and specifically relates to a regeneration device for solid hydrogen storage alloy. Background Technology

[0002] Hydrogen energy boasts advantages such as abundant sources, environmental friendliness, high energy density, high conversion efficiency, and wide applicability. It is one of the cleanest known energy forms, achieving zero emissions and zero pollution. The full utilization of hydrogen energy can support the development of clean energy, reduce dependence on oil and gas imports, optimize the energy structure, and address climate change. Currently, the bottleneck restricting hydrogen energy utilization is its storage and transportation. Existing hydrogen storage and transportation technologies mainly include high-pressure gaseous hydrogen storage, cryogenic liquid hydrogen storage, and solid-state hydrogen storage. Compared to high-pressure gaseous and cryogenic liquid hydrogen storage, solid-state hydrogen storage can achieve hydrogen storage and transportation at room temperature and low pressure, avoiding the use of high-pressure containers and the risks associated with hydrogen liquefaction, significantly reducing the possibility of explosions and leaks, and offering better safety. Simultaneously, solid-state hydrogen storage has a high volumetric density and high hydrogen purity. Solid-state hydrogen storage provides an important solution for hydrogen energy storage and transportation.

[0003] Currently, solid-state hydrogen storage solutions utilizing hydrogen storage alloys have been demonstrated in many scenarios. However, in practical applications, damage to the alloy tank, pipelines, and valves is inevitable; the hydrogen storage performance of the solid-state hydrogen storage device and its alloy may degrade due to hydrogen purity issues, leaks, or water immersion; the high water and oxygen content in the hydrogen produced by water electrolysis can poison the hydrogen storage alloy due to impurities such as water and oxygen in the solid-state hydrogen storage device caused by differences in drying and purification processes; and long-term cyclic use can also lead to performance degradation of the hydrogen storage alloy.

[0004] Currently, the treatment for hydrogen storage alloys with degraded performance is to discard them, with very little recycling or regeneration for reuse. Because the alloy particles contain hydrogen and have become pulverized after repeated hydrogen absorption and desorption, uncontrolled direct exposure to air can easily cause fire, combustion, or even explosion, posing a significant safety hazard.

[0005] Although the patent with publication number CN118343671A involves an active regeneration device and method for waste solid hydrogen storage materials, and can achieve active regeneration of waste solid hydrogen storage materials, the regeneration device cannot monitor the temperature and pressure inside the cylinder in real time. The installation of the first and second baffles is time-consuming and labor-intensive, affecting the regeneration efficiency. In addition, the heating or cooling of the device is achieved by heating the external cylinder, and the entire device needs to be placed in a water bath or oil bath, which is relatively complicated to operate and has low heating or cooling efficiency and high energy consumption. Furthermore, it does not address how to solve the safety problem of the hydrogen storage alloy in the solid hydrogen storage device during the process of loading it into the regeneration device before and after regeneration. Utility Model Content

[0006] The purpose of this invention is to provide a regeneration device for solid hydrogen storage alloys, which not only realizes the performance regeneration of hydrogen storage alloys, but also solves the problem of re-transferring the regenerated hydrogen storage alloy powder.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0008] An embodiment of this utility model provides a regeneration device for a solid hydrogen storage alloy, including a tank body. The tank body is provided with a spiral tube, which includes a first spiral tube and a second spiral tube. The top openings of the first spiral tube and the second spiral tube are connected, and the bottom openings of the first spiral tube and the second spiral tube extend to the outside of the bottom of the tank body, respectively. A medium is provided inside the spiral tube, which is used to heat or cool the tank body.

[0009] As a further technical solution, the tank is a cylindrical tank, and the tank is provided with a discharge port and an upper cover. The discharge port is located at the bottom of the tank, and the upper cover is located at the top of the tank.

[0010] As a further technical solution, the bottom openings of the first spiral tube and the second spiral tube are respectively located on both sides of the discharge port.

[0011] As a further technical solution, the upper cover is fixed to the tank body by bolts, and the upper cover is a circular cover.

[0012] As a further technical solution, the upper cover is provided with an interface, a pressure gauge and a thermocouple.

[0013] As a further technical solution, the interface on the upper cover is connected to a hydrogen or vacuum pump.

[0014] As a further technical solution, an insulation layer is provided on the tank shell.

[0015] As a further technical solution, a sealing plug is provided on the discharge port.

[0016] As a further technical solution, the emission port is connected to a hydrogen storage device.

[0017] As a further technical solution, the tank or spiral tube of the regeneration device is made of stainless steel.

[0018] The beneficial effects of the above-described embodiments of this utility model are as follows:

[0019] (1) The tank of the regeneration device of this utility model is made of stainless steel and has a certain pressure bearing capacity. The interface on the upper end cover can be connected to an external hydrogen cylinder or vacuum pump to realize the filling of hydrogen into the tank or the evacuation. The pressure gauge and thermocouple on the upper end cover can monitor the pressure and temperature inside the tank in real time, so as to facilitate further control of the pressure and temperature inside the tank.

[0020] (2) The spiral tube in this utility model is set inside the tank and contains a medium. It can heat or cool the hydrogen storage alloy in the tank by changing the type or temperature of the medium, which is convenient to operate.

[0021] (3) The bottom of the tank of the regeneration device of this utility model is provided with a discharge port, which is connected to the hydrogen storage device. The regenerated hydrogen storage alloy powder can be transferred to the hydrogen storage device under sealed conditions, preventing the activated hydrogen storage alloy from being directly exposed to the air, which could lead to combustion or even explosion. This solves the problem of safe recycling of activated hydrogen storage alloy. Attached Figure Description

[0022] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0023] Figure 1 This is a schematic diagram of the structure of the regeneration device for solid hydrogen storage alloy in this utility model;

[0024] The diagram is for illustrative purposes only.

[0025] The components include: 1. Interface; 2. Pressure gauge; 3. Thermocouple; 4. Drain port; 5. Top cover; 6. Shell; 7. Spiral tube; 8. Bolt; and 9. Insulation layer. Detailed Implementation

[0026] In this invention, the solid hydrogen storage alloy is a titanium-iron or titanium-manganese hydrogen storage alloy in powder form. The titanium-iron hydrogen storage alloy is a conventional design known to those skilled in the art and will not be described in detail here. All components used are existing structures and can be common commercially available products.

[0027] Example 1

[0028] In a typical embodiment of this utility model, such as Figure 1 As shown, a regeneration device for a solid hydrogen storage alloy is provided, including a tank and four discharge ports, a top end, a spiral tube, and an insulation layer. The tank is cylindrical and has pressure-bearing capacity. The inner cavity of the tank is used to contain the hydrogen storage alloy powder to be stored, allowing the hydrogen storage alloy powder to be regenerated within the tank by adjusting the temperature and pressure.

[0029] The top of the tank is equipped with a circular upper cover (5). Bolt holes are located at both ends of the upper cover in the horizontal direction. Bolts (8) detachably secure the upper cover to the tank body through these holes. When the upper cover is connected to the tank body, it maintains a sealed state. When disconnected, the upper cover is used to load hydrogen storage alloy powder into the tank body. The upper cover is equipped with an interface (1), a pressure gauge (2), and a thermocouple (3). The interface (1) is used to connect to a hydrogen gas or vacuum pump, thereby enabling the introduction of hydrogen gas into the tank or the extraction of gas from the tank. The pressure gauge (2) is a commonly used pressure gauge in the art, used for real-time monitoring of the gas pressure inside the tank. The thermocouple (3) is a commonly used thermocouple in the art, used for real-time monitoring of the temperature inside the tank. The tank has four circular discharge ports at its bottom, which connect to a hydrogen storage device. This storage device is a commonly used type in the field. These ports allow the regenerated hydrogen storage alloy powder from the tank to be directly discharged into the storage device in a sealed environment (water or an inert atmosphere), enabling the powder to be reused. Each discharge port has a sealing plug to maintain a sealed tank. When the discharge port is connected to the storage device, the sealing plug is simply opened.

[0030] The tank has a 7-spiral tube at its bottom, made of stainless steel for pressure resistance. The 7-spiral tube comprises a first spiral tube and a second spiral tube, with their top openings connected. The bottom openings of the first and second spiral tubes are located on either side of the 4 discharge ports and extend to the outside of the tank. The tubes within the 7-spiral tube are used to introduce a medium, which is used to heat or cool the tank by adjusting the type of medium. The medium can be oil at 200-300℃ or water at 0-10℃. The bottom opening of the first spiral tube is for receiving the medium, and the bottom opening of the second spiral tube is for discharging the medium. The tank has a 6-shell structure on its side wall, with 9 insulation layers on these shells. These insulation layers maintain the regeneration temperature of the hydrogen storage alloy powder, ensuring its full regeneration and activation at high temperatures.

[0031] The usage process of the solid hydrogen storage alloy regeneration device in this invention is as follows:

[0032] The hydrogen gas in the solid hydrogen storage device is purged; the purged solid hydrogen storage device is filled with inert gases such as argon or immersed in water to collect the hydrogen storage alloy, so as to avoid the hydrogen storage alloy being directly exposed to the air, which may lead to combustion or even explosion; the collected hydrogen storage alloy is transferred to the hydrogen storage alloy regeneration device for regeneration.

[0033] The regeneration process is as follows:

[0034] (1) Open the upper cover of the regeneration device 5, fill the collected hydrogen storage alloy powder into the housing of the regeneration device 6, and use bolts 8 to fix the upper cover of 5 to the tank body for sealing.

[0035] (2) Connect the vacuum pump through interface 1 to evacuate the regeneration device;

[0036] (3) Pass the medium into the 7 spiral tube to heat the regeneration device to a temperature of 100-400℃ and keep it at that temperature for 1-5 hours.

[0037] (4) Introduce high-purity hydrogen into port 1 to a pressure of 0.3-3.0 MPa and maintain it;

[0038] (5) Expel the high-purity hydrogen gas in the regeneration device through interface 1 and evacuate the vacuum;

[0039] (6) Repeat steps (4) and (5) above a total of 5-10 times;

[0040] (7) Cool the regeneration device to room temperature to complete the performance regeneration process of the hydrogen storage alloy;

[0041] (8) Connect the regeneration device to the hydrogen storage device through the four discharge ports. In a closed environment, transfer the regenerated hydrogen storage alloy powder to the hydrogen storage device so that the hydrogen storage alloy powder can continue to be used.

[0042] It is evident that the regeneration device of this invention can regenerate hydrogen storage alloy powder and transfer the regenerated hydrogen storage alloy powder into a hydrogen storage device, enabling the hydrogen storage alloy powder to continue to be used.

[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A regeneration device for a solid hydrogen storage alloy, characterized in that, The application relates to a tank body, a spiral pipe is arranged in the tank body, the spiral pipe comprises a first spiral pipe and a second spiral pipe, the top pipe orifices of the first spiral pipe and the second spiral pipe are communicated, the bottom pipe orifices of the first spiral pipe and the second spiral pipe respectively extend to the outside of the bottom of the tank body, and a medium is arranged in the spiral pipe and used for heating or cooling the tank body.

2. The apparatus of claim 1, wherein the apparatus is configured to: The tank body is a cylindrical tank body, a discharge port is arranged on the tank body, and an upper end cover is arranged on the top of the tank body.

3. The apparatus of claim 2, wherein the apparatus is configured to: The bottom pipe orifices of the first spiral pipe and the second spiral pipe are respectively arranged on the two sides of the discharge port.

4. The apparatus of claim 2, wherein the apparatus is configured to: The upper end cover is fixed on the tank body through bolts, and the upper end cover is a circular cover.

5. The apparatus of claim 4, wherein the apparatus is configured to: An interface, a pressure gauge and a thermocouple are arranged on the upper end cover.

6. The apparatus of claim 5, wherein the apparatus is configured to: The interface on the upper end cover is connected with a hydrogen gas or a vacuum pump.

7. The apparatus of claim 1, wherein the apparatus is configured to perform the method of claim 6. An insulation layer is arranged on the shell of the tank body.

8. The apparatus of claim 2, wherein the apparatus is configured to perform the method of claim 1. A sealing plug is arranged on the discharge port.

9. The apparatus of claim 2, wherein the apparatus is configured to perform the method of claim 1. The discharge port is connected with a hydrogen storage device.

10. A regeneration device for a solid hydrogen storage alloy, characterized in that, The material of the tank body or the spiral pipe of the regeneration device is stainless steel.

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