A device and method for regenerating spent solid-state hydrogen storage material

Abstract

The application discloses a kind of waste solid-state hydrogen storage material active regeneration device and method, including shell and at least one flow guide component, shell is formed with gas passage and with gas passage communication gas inlet and gas outlet, flow guide component includes first flow guide piece, first flow guide piece is built into gas passage, and with the inner wall of shell detachable connection, first flow guide piece can be separated into at least two intercommunicating flow channel cavities, for extending the flow path of gas in gas passage.The application can solve the problem that the performance recovery is difficult to achieve or the performance recovery effect is poor in the prior art due to the use of conventional methods for waste solid-state hydrogen storage material.

Description

Technical Field

[0001] This invention relates to the field of alloy hydrogen storage technology, and in particular to an active regeneration device and method for waste solid hydrogen storage materials. Background Technology

[0002] To extend the service life of hydrogen storage alloy materials, the hydrogenated hydrogen storage alloy materials can be actively regenerated, thereby restoring their hydrogen storage performance.

[0003] For example, Chinese invention patent application number CN202111415945.6, entitled "A Method for Regenerating the Hydrogen Storage Activity of a Titanium-Based Hydrogen Storage Alloy," regenerates a titanium-based hydrogen storage alloy whose hydrogen storage activity has declined by heating, holding at a constant temperature, evacuating, pressurizing with gas, and then cooling and venting. This process is repeated several times to complete the regeneration of the titanium-based hydrogen storage alloy whose hydrogen storage activity has declined. This method does not require chemical modification of the hydrogen storage alloy, and the process is simple, low-cost, and environmentally friendly. Typically, during the dismantling of hydrogen storage devices, the solid hydrogen storage material inside is removed from the container. After hydrogenation, the solid hydrogen storage material, once separated from the original hydrogen storage container and exposed to air, can be considered waste solid hydrogen storage material. Conventional methods are insufficient to restore its performance, and remelting it as raw material is energy-intensive, inefficient, and difficult to separate impurity elements, resulting in poor performance recovery.

[0004] Therefore, there is an urgent need for an active regeneration device and method for waste solid hydrogen storage materials to solve the problem that conventional methods are difficult to use to restore the performance of waste solid hydrogen storage materials or the performance restoration effect is poor. Summary of the Invention

[0005] In view of this, it is necessary to provide an active regeneration device and method for waste solid hydrogen storage materials to solve the technical problem in the prior art that it is difficult to achieve performance recovery or the performance recovery effect is poor when using conventional methods for waste solid hydrogen storage materials.

[0006] To achieve the above-mentioned technical objectives, the present invention provides an active regeneration device for waste solid hydrogen storage materials, comprising:

[0007] A housing having a gas passage and an inlet and an outlet communicating with the gas passage; and

[0008] At least one flow guiding component, the flow guiding component including a first flow guiding element, the first flow guiding element being built into the gas channel and detachably connected to the inner wall of the housing, the first flow guiding element being capable of dividing the gas channel into at least two interconnected flow channel cavities for extending the flow path of gas within the gas channel.

[0009] Furthermore, the shell includes a cylindrical body, a first end cap, and a second end cap. The first end cap and the second end cap are respectively disposed at both ends of the cylindrical body and are both connected to the cylindrical body. The first end cap, the second end cap, and the interior of the cylindrical body together form the gas channel. The first end cap has the air inlet, and the second end cap has the air outlet.

[0010] Furthermore, the housing also includes a first valve and a second valve. The first valve is disposed on the first end cap and connected to the air inlet for opening or closing the air inlet. The second valve is disposed on the second end cap and connected to the air outlet for opening or closing the air outlet.

[0011] Furthermore, the first flow guide includes a first baffle plate and a first connecting block. The first baffle plate is arranged along a direction perpendicular to the axis of the housing. One end of the first connecting block is detachably connected to the inner wall of the housing, and the other end is connected to the first baffle plate.

[0012] Furthermore, the inner wall of the cylinder is provided with a first sliding groove along its length direction. The cross-section of the first sliding groove is "T" shaped. The first connecting block is configured to cooperate with the first sliding groove and is slidably embedded in the first sliding groove.

[0013] Furthermore, the flow guiding assembly also includes a second flow guiding member, which is staggered with the first baffle plate and detachably connected to the inner wall of the cylinder, and the distance between the second flow guiding member and the first baffle plate is adjustable.

[0014] Furthermore, the inner wall of the cylinder is provided with a second sliding groove along its length direction. The second sliding groove is located on the opposite side of the first sliding groove. The second guide member includes a second baffle plate and a second connecting block. The second baffle plate is parallel to the first baffle plate and is spaced apart from it. One end of the second connecting block is slidably embedded in the second sliding groove and the other end is connected to the second baffle plate.

[0015] Furthermore, there are multiple flow guiding components, which are spaced apart along the length of the cylinder, and the spacing between two adjacent flow guiding components is adjustable.

[0016] Furthermore, the gas channel is used to fill the material, which is a TiFe-based solid hydrogen storage material.

[0017] The present invention also provides a method for the active regeneration of waste solid hydrogen storage materials, using the waste solid hydrogen storage material active regeneration device as described in any one of the above-mentioned methods, the steps of which include:

[0018] S1. Weld the first or second end cap to one end of the cylinder and keep the cylinder upright;

[0019] S2. The material is loaded into the cylinder in an orderly manner, and the first baffle and the second baffle are installed in sequence to apply pressure to compact the material. After compaction and loading are completed, the second end cap or the first end cap is welded to the other end of the cylinder.

[0020] S3. Heat the active regeneration device to 60℃~200℃ by water bath or oil bath heating, purge the active regeneration device with a certain pressure of high-purity argon or high-purity nitrogen, first evacuate to 2×10-3Pa, then introduce 0.1~0.3MPa of argon or nitrogen, maintain pressure, release pressure through the second valve, evacuate to 2×10-3Pa and continue for 10min~30min;

[0021] S4. Maintain the temperature of step S3. In the early stage, use the ejector pressure of 1.2MPa to 2.0MPa or the hydrogen circulation pump of 0.5MPa to 1.0MPa to start the hydrogen circulation and introduce it into the active regeneration device, and continue for 1 to 2 hours. In the later stage, directly vent it and then introduce 0.2MPa to 0.6MPa of high-purity hydrogen into the active regeneration device. After the pressure stabilizes, adjust the inlet pressure and open the first valve and the second valve at the same time to form the flow of hydrogen.

[0022] S5. Stop the flow of hydrogen, close the second valve, and introduce high-pressure hydrogen to maintain pressure;

[0023] S6. Switch to 0-10℃ water or low-temperature medium, and then release the pressure after pressure maintenance;

[0024] S7. Repeat steps S2 to S6.

[0025] Compared with the prior art, the beneficial effects of the present invention include: a gas channel for containing materials is formed inside the shell, and both the inlet and outlet are connected to the gas channel for air intake and exhaust; at least one flow guiding component is built into the shell, wherein the flow guiding component includes a first flow guiding member, which is detachably connected to the inner wall of the shell and divides the gas channel into at least two interconnected flow channel cavities to extend the flow path of the gas within the gas channel. Compared with the prior art, by setting up a shell to contain materials and using the inlet and outlet to introduce gas into the shell, and then using at least one flow guiding component to extend the flow path of the gas within the gas channel, the gas and materials are in full contact, which is beneficial to the active regeneration of the materials. This invention can be used for the active regeneration of waste solid hydrogen storage materials and can solve the technical problem in the prior art that it is difficult to achieve performance recovery or the performance recovery effect is poor when using conventional methods for waste solid hydrogen storage materials. Attached Figure Description

[0026] Figure 1This is a cross-sectional structural schematic diagram of an active regeneration device for waste solid hydrogen storage materials provided in an embodiment of the present invention;

[0027] Figure 2 This is a cross-sectional view of the cylinder, the first guide member, and the second guide member connected according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the relationship between initial hydrogen storage density and pressure provided in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram showing the relationship between the hydrogen release curve and the hydrogen storage density in an active regeneration device for waste solid hydrogen storage materials according to an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] Casing 1;

[0032] Cylinder 11;

[0033] First cover 12;

[0034] Second cover 13;

[0035] First valve 14;

[0036] Second valve 15;

[0037] Flow guiding component 2;

[0038] First guide component 21;

[0039] First baffle plate 211;

[0040] First connecting block 212;

[0041] Second guide component 22;

[0042] Second baffle plate 221;

[0043] Second connecting block 222. Detailed Implementation

[0044] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0045] Please see Figures 1 to 2The present invention provides an active regeneration device for waste solid hydrogen storage materials, comprising: a shell 1 and at least one flow guiding component 2. The shell 1 forms a gas channel and an inlet and an outlet connected to the gas channel. The flow guiding component 2 includes a first flow guiding element 21, which is built into the gas channel and detachably connected to the inner wall of the shell 1. The first flow guiding element 21 can divide the gas channel into at least two interconnected flow channel cavities to extend the flow path of the gas in the gas channel.

[0046] In this device, the interior of the housing 1 forms a gas channel for containing materials. The inlet and outlet are connected to the gas channel for air intake and exhaust. At least one flow guide component 2 is built into the housing 1. The flow guide component 2 includes a first flow guide 21, which is detachably connected to the inner wall of the housing 1 and divides the gas channel into at least two interconnected flow channel cavities to extend the flow path of the gas in the gas channel.

[0047] Compared to existing technologies, by setting up a shell 1 to contain materials and using an inlet and an outlet to introduce gas into the shell 1, and then using at least one flow guide component 2 to extend the flow path of the gas in the gas channel, the gas can fully contact the materials, which is beneficial to the active regeneration of the materials. It can be used for the active regeneration of waste solid hydrogen storage materials and can solve the technical problem in existing technologies where it is difficult to achieve performance recovery or the performance recovery effect is poor when using conventional methods for waste solid hydrogen storage materials.

[0048] Furthermore, the material here is waste solid hydrogen storage material, which is a TiFe-based solid hydrogen storage material.

[0049] Specifically, TiFe-based solid hydrogen storage materials are titanium-iron-based hydrogen storage alloys. Typically, TiFe-based solid hydrogen storage materials are in powder form. Here, titanium-iron-based hydrogen storage alloys are a conventional configuration known to those skilled in the art and will not be described in detail further.

[0050] like Figure 1 As shown, the housing 1 includes a cylinder 11, a first end cap 12 and a second end cap 13, a first valve 14 and a second valve 15.

[0051] The first end cap 12 and the second end cap 13 are respectively disposed at both ends of the cylinder 11 and are both connected to the cylinder 11. The first end cap 12, the second end cap 13 and the interior of the cylinder 11 together form a gas channel. The first end cap 12 has an air inlet and the second end cap 13 has an air outlet.

[0052] The shell 1 is a welded sealed container structure consisting of a cylinder 11, a first end cap 12, and a second end cap 13. It is used to improve the safety of the active regeneration device for waste solid hydrogen storage materials. In use, the first end cap 12 or the second end cap 13 is first welded to one end of the cylinder 11. After the material is filled, the other end of the second end cap 13 or the first end cap 12 is then welded to facilitate the filling or disassembly of the material. Further details are omitted here.

[0053] Furthermore, the cylinder 11 and the end cap are made of 304, 316 or duplex stainless steel, which has high yield strength and resistance to hydrogen embrittlement. This is a conventional setting known to those skilled in the art and will not be described in detail here.

[0054] One implementation method is, for example Figure 1 As shown, the first valve 14 is disposed on the first end cap 12 and connected to the air inlet, and is used to open or close the air inlet. The second valve 15 is disposed on the second end cap 13 and connected to the air outlet, and is used to open or close the air outlet.

[0055] The first valve 14 and the second valve 15 are respectively used to open the air inlet and the air outlet to improve the sealing and safety of the device.

[0056] Furthermore, both the first valve 14 and the second valve 15 are common and readily available gas valves on the market, which is a conventional setting known to those skilled in the art and will not be described in detail here.

[0057] like Figure 1 , Figure 2 As shown, the first flow guide 21 includes a first baffle plate 211 and a first connecting block 212. The first baffle plate 211 is arranged along the axis perpendicular to the housing 1. One end of the first connecting block 212 is detachably connected to the inner wall of the housing 1, and the other end is connected to the first baffle plate 211.

[0058] The first baffle plate 211 is detachably connected to the inner wall of the cylinder 11 via the first connecting block 212, and is used to guide the gas flow, thereby extending the gas flow path.

[0059] One preferred implementation method is, for example... Figure 2 As shown, the inner wall of the cylinder 11 is provided with a first groove along its length. The cross-section of the first groove is "T" shaped. The first connecting block 212 is set in accordance with the first groove and is slidably embedded in the first groove.

[0060] The cross-sections of the first connecting block 212 and the first sliding groove are both "T" shaped and are detachably connected. At the same time, the first connecting block 212 can slide relative to the cylinder 11. After sliding, it compacts the waste solid hydrogen storage material filled in the gas channel, which is beneficial to improving the efficiency of active regeneration.

[0061] like Figure 2 As shown, the flow guiding assembly 2 also includes a second flow guiding component 22, which is staggered with the first baffle plate 211 and is detachably connected to the inner wall of the cylinder 11. The distance between the second flow guiding component 22 and the first baffle plate 211 is adjustable.

[0062] The second guide element 22 and the first baffle 211 are alternately arranged along the length of the cylinder 11 inside the cylinder 11, and two adjacent second guide elements 22 and first baffles 211 are staggered, thereby extending the flow path of the gas in the gas channel.

[0063] One implementation method is, for example Figure 2 As shown, the inner wall of the cylinder 11 is also provided with a second sliding groove along its length direction. The second sliding groove is located on the opposite side of the first sliding groove. The second guide member 22 includes a second baffle plate 221 and a second connecting block 222. The second baffle plate 221 is parallel to the first baffle plate 211 and is spaced apart from each other. One end of the second connecting block 222 is slidably embedded in the second sliding groove and the other end is connected to the second baffle plate 221.

[0064] The sliding engagement between the second connecting block 222 and the second slide groove allows the second baffle plate 221 to be adjusted relative to the cylinder 11 and to be detached.

[0065] As another preferred implementation method, such as Figure 1 As shown, there are multiple flow guiding components 2, which are spaced apart along the length of the cylinder 11, and the spacing between two adjacent flow guiding components 2 is adjustable.

[0066] Specifically, the number of the first baffle plate 211 and the second baffle plate 221 can be adjusted according to different usage conditions to facilitate user operation.

[0067] Furthermore, by adjusting the spacing between the first baffle plate 211 and the second baffle plate 221, the waste solid hydrogen storage material can be compacted, which is beneficial to improving the efficiency of active regeneration.

[0068] The present invention also provides a method for the active regeneration of waste solid hydrogen storage materials, using the active regeneration device for waste solid hydrogen storage materials as described above, the steps of which include:

[0069] S1. Weld the first end cap 12 or the second end cap 13 to one end of the cylinder 11 and keep the cylinder 11 upright;

[0070] S2. The material is orderly filled into the cylinder 11, and the first baffle plate 211 and the second baffle plate 221 are installed in sequence to apply pressure to compact the material. After compaction and filling, the second end cap 13 or the first end cap 12 is welded to the other end of the cylinder 11.

[0071] S3. Heat the active regeneration device to 60℃~200℃ by water bath or oil bath heating, and purge the active regeneration device with a certain pressure of high-purity argon or high-purity nitrogen. First, evacuate to 2×10-3Pa, then introduce 0.1~0.3MPa of argon or nitrogen, maintain the pressure, release the pressure through the second valve 15, evacuate to 2×10-3Pa and continue for 10min~30min.

[0072] S4. Maintain the temperature of step S3. In the early stage, use the ejector pressure of 1.2MPa to 2.0MPa or the hydrogen circulation pump of 0.5MPa to 1.0MPa to start the hydrogen circulation and introduce it into the active regeneration device. Continue for 1 to 2 hours. In the later stage, directly vent the gas. Then introduce 0.2MPa to 0.6MPa of high-purity hydrogen into the active regeneration device. After the pressure stabilizes, adjust the inlet pressure and open the first valve 14 and the second valve 15 at the same time to form the flow of hydrogen.

[0073] S5. Stop the flow of hydrogen, close the second valve 15, and introduce high-pressure hydrogen to form a pressure holding condition;

[0074] S6. Switch to 0-10℃ water or low-temperature medium, and then release the pressure after pressure maintenance;

[0075] S7. Repeat steps S2 to S6.

[0076] In one implementation method, 180 kg of waste TiFe-based hydrogen storage alloy (with a PCT test hydrogen storage capacity of only 0.025 wt%, which is negligible) is filled into an active regeneration device, and baffles are installed in sequence and compacted with a pressure of 250 kg. The recovery device and baffles are both made of 304 stainless steel, with a baffle spacing of 50 mm between each group, and the filling density can reach 4.2 kg / L.

[0077] Specifically, in step one, after sealing the active regeneration device, an airtightness check is performed. The device is then placed in an oil bath, and the temperature of the heat transfer oil is raised to 200℃. The second valve 15 is opened to evacuate the device to a vacuum level of 2×10⁻³ Pa for 30 minutes. The second valve 15 is then closed, and the first valve 14 is opened to introduce 0.2 MPa of high-purity nitrogen into the device. After maintaining the pressure for 10 minutes, the first valve 14 is closed, and the second valve 15 is opened to release the pressure and evacuate to a vacuum level of 2×10⁻³ Pa for 30 minutes. In step two, maintaining the temperature at 200℃, the hydrogen circulation system is started, and a hydrogen circulation pump is used to introduce 0.8 MPa of high-purity hydrogen. The hydrogen is circulated through the first valve 14 and the second valve 15 for 150 minutes. Then, the hydrogen circulation system is shut off, the high-purity hydrogen pressure is adjusted to 0.1 MPa, and the hydrogen is directly introduced into the first valve 14 and discharged directly through the second valve 15 to continue the hydrogen flow for 10 minutes. Then, in step three, the second valve 15 is closed, the inlet pressure is adjusted to 4.5 MPa, and the hydrogen is introduced into the recovery device through the first valve 14. The pressure is maintained for 200 minutes, and the device is allowed to cool naturally. Finally, the above three steps are repeated three times. After step three is completed, the low-temperature medium (pure water at 5°C) is switched to allow the hydrogen storage material to fully absorb hydrogen at a hydrogen pressure of 4.5 MPa for 120 minutes.

[0078] Furthermore, after this process, the waste TiFe-based solid hydrogen storage material is connected to an active regeneration device and tested using a hydrogen source. Hydrogen is released at a flow rate of 100 SL / min in a 65°C water bath, achieving a hydrogen release rate of 36.37 standard cubic meters. The hydrogen release curve is shown below. Figure 3 As shown, the hydrogen storage density can reach 1.67 wt%, while the initial hydrogen storage density of TiFe material is approximately 1.75 wt%. The regeneration rate can reach 95.5%, and the hydrogen storage density can still reach 1.64 wt% after 50 cycles.

[0079] In another implementation, 150 kg of waste vanadium-based solid solution hydrogen storage alloy (with a PCT test hydrogen storage capacity of only 0.06 wt%, which is negligible) is filled into an active regeneration device, and baffles are installed in sequence and compacted with a pressure of 180 kg. The recovery device and baffles are both made of 304 stainless steel, with a baffle spacing of 50 mm between each group, and the filling density can reach 3.8 kg / L.

[0080] Specifically, in step one, after sealing the active regeneration device, an airtightness check is performed. The device is then placed in an oil bath, and the temperature of the heat transfer oil is raised to 250°C. The second valve 15 is opened to evacuate the device to a vacuum level of 2×10⁻³ Pa for 60 minutes. The second valve 15 is then closed, and the first valve 14 is opened to introduce 0.5 MPa of high-purity argon gas into the device. After maintaining the pressure for 20 minutes, the first valve 14 is closed, and the second valve 15 is opened to release the pressure and evacuate to a vacuum level of 2×10⁻³ Pa for 60 minutes. Next, in step two, while maintaining the temperature at 250°C, the hydrogen circulation system is started, and a high-purity argon gas at 1.5 MPa is introduced into the device. Hydrogen gas circulates through the first valve 14 and the second valve 15 for 150 minutes. The hydrogen circulation system is then shut off, and the high-purity hydrogen pressure is adjusted to 0.2 MPa. Hydrogen gas is then directly introduced into the first valve 14 and discharged directly through the second valve 15 to continue hydrogen flow for 20 minutes. In step three, the second valve 15 is closed, and the inlet pressure is adjusted to 6 MPa. Hydrogen gas is then introduced into the recovery device through the first valve 14 and maintained at pressure for 250 minutes, followed by natural cooling. Finally, steps 1-3 are repeated three times. After step three is completed, the cryogenic medium (pure water at 5°C) is switched to allow the hydrogen storage material to fully absorb hydrogen under a hydrogen pressure of 6 MPa for 180 minutes.

[0081] Furthermore, after this recovery process, the waste TiFe-based solid hydrogen storage material is connected to a hydrogen source testing device via an active regeneration unit, and hydrogen is released at a flow rate of 50 ppm in a 65°C water bath. The hydrogen storage density can reach 2.21 wt%, while the initial hydrogen storage density of the TiFe material is approximately 2.35 wt%. The regeneration rate can reach 94%, and the hydrogen storage density after 50 cycles is 2.05 wt%, with the decay trend consistent with the material's hydrogen storage state.

[0082] In the specific workflow of this invention, a gas channel for containing materials is formed inside the housing 1. Both the inlet and outlet are connected to the gas channel for air intake and exhaust. At least one flow guiding component 2 is built into the housing 1. The flow guiding component 2 includes a first flow guiding element 21, which is detachably connected to the inner wall of the housing 1 and divides the gas channel into at least two interconnected flow path cavities to extend the flow path of the gas within the gas channel. Compared to the prior art, by setting the housing 1 to contain materials and using the inlet and outlet to introduce gas into the housing 1, and then extending the flow path of the gas within the gas channel through at least one flow guiding component 2, the gas and materials are in full contact, which is beneficial for the active regeneration of the materials and can be used for the active regeneration of waste solid hydrogen storage materials.

[0083] This device, through the aforementioned structure, can solve the technical problem in the prior art where it is difficult to restore the performance of waste solid hydrogen storage materials using conventional methods, or the performance restoration effect is poor.

[0084] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. An active regeneration device for waste solid hydrogen storage materials, characterized in that, include: A housing having a gas passage and an air inlet and an air outlet connected to the gas passage; as well as At least one flow guiding component, the flow guiding component including a first flow guiding element, the first flow guiding element being built into the gas channel and detachably connected to the inner wall of the housing, the first flow guiding element being capable of dividing the gas channel into at least two interconnected flow channel cavities for extending the flow path of the gas in the gas channel; The shell includes a cylindrical body, a first end cap, and a second end cap. The first end cap and the second end cap are respectively disposed at both ends of the cylindrical body and are both connected to the cylindrical body. The first end cap, the second end cap, and the interior of the cylindrical body together form the gas channel. The first end cap has the air inlet, and the second end cap has the air outlet. The first flow guide includes a first baffle plate and a first connecting block. The first baffle plate is arranged along a direction perpendicular to the axis of the housing. One end of the first connecting block is detachably connected to the inner wall of the housing, and the other end is connected to the first baffle plate. The flow guiding assembly further includes a second flow guiding component, which is staggered with the first baffle plate and detachably connected to the inner wall of the cylinder. The distance between the second flow guiding component and the first baffle plate is adjustable.

2. The active regeneration device for waste solid hydrogen storage materials according to claim 1, characterized in that, The housing also includes a first valve and a second valve. The first valve is disposed on the first end cap and connected to the air inlet for opening or closing the air inlet. The second valve is disposed on the second end cap and connected to the air outlet for opening or closing the air outlet.

3. The active regeneration device for waste solid hydrogen storage materials according to claim 1, characterized in that, The inner wall of the cylinder is provided with a first sliding groove along its length. The cross-section of the first sliding groove is "T" shaped. The first connecting block is provided in conjunction with the first sliding groove and is slidably embedded in the first sliding groove.

4. The active regeneration device for waste solid hydrogen storage materials according to claim 3, characterized in that, The inner wall of the cylinder is provided with a second sliding groove along its length. The second sliding groove is located on the opposite side of the first sliding groove. The second guide includes a second baffle plate and a second connecting block. The second baffle plate is parallel to the first baffle plate and is spaced apart from it. One end of the second connecting block is slidably embedded in the second sliding groove and the other end is connected to the second baffle plate.

5. The active regeneration device for waste solid hydrogen storage materials according to claim 4, characterized in that, The number of flow guiding components is multiple, and the multiple flow guiding components are spaced apart along the length direction of the cylinder, and the spacing between two adjacent flow guiding components is adjustable.

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