Hydrogen production apparatus and hydrogen production method

Abstract

The application discloses a hydrogen production device and a hydrogen production method. The hydrogen production device comprises a reaction part and a carbon discharge part. The reaction part has a reaction chamber. An outlet is arranged at the top of the reaction part and is communicated with the reaction chamber. The carbon discharge part is opposite to the outlet and is connected with the reaction part to seal the outlet. The carbon discharge part comprises a carbon discharge assembly and a driving assembly. The carbon discharge assembly is arranged on the side of the outlet away from the reaction chamber. The driving assembly is arranged on the side of the carbon discharge assembly away from the outlet and is connected with the carbon discharge assembly. The carbon discharge assembly is used to discharge the solid carbon at the outlet. In the process of continuously cracking methane to produce hydrogen, the solid carbon is continuously accumulated upward in the state of being layered with the molten metal in an up-down manner. The solid carbon continuously accumulated upward from the outlet is removed by the carbon discharge assembly, the carbon is discharged without stopping, and the production efficiency is improved. Meanwhile, the carbon discharge part is arranged above the outlet, the space occupation is effectively reduced, the structure of the hydrogen production device is simplified, and unnecessary energy consumption and pipeline blockage are reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of hydrogen production, and particularly relates to a hydrogen production device and a hydrogen production method. BACKGROUND

[0002] As another zero-carbon emission hydrogen production technology, the methane cracking hydrogen production technology can also produce high-value carbon products such as graphite, carbon nanotubes and fullerenes, and thus has attracted widespread attention. Among them, the high-temperature molten metal-based methane cracking hydrogen production technology has become a research hotspot because of its simple device and relatively high conversion rate. The high-temperature molten metal can quickly and uniformly heat the methane, resulting in the cracking of the methane to produce hydrogen and solid carbon. Because the density of the produced solid carbon is much lower than that of the liquid metal, the solid carbon can be automatically separated from the liquid metal and float on the surface of the liquid metal, effectively avoiding various drawbacks in the traditional methane cracking process.

[0003] However, in the actual reaction process, the solid carbon floating on the surface of the molten metal will continuously increase due to the continuous reaction, so it is necessary to regularly clean and discharge the produced solid carbon from the reactor to ensure the continuous progress of the methane cracking reaction. However, this will inevitably require shutdown for processing, which not only leads to a decrease in production efficiency, but also may cause an increase in production cost. SUMMARY

[0004] The application aims to solve the problem that the solid carbon produced by the existing molten metal cracking of methane cannot be discharged synchronously and needs to be discharged after shutdown. The application also provides a hydrogen production method.

[0005] Technical solution: The hydrogen production device provided by the application comprises:

[0006] a reaction part having a reaction chamber, a top part of the reaction part being provided with an outlet, the outlet being in communication with the reaction chamber;

[0007] a carbon discharging part opposite to the outlet and connected with the reaction part to seal the outlet, the carbon discharging part comprising a carbon discharging assembly and a driving assembly, the carbon discharging assembly being arranged on a side of the outlet away from the reaction chamber, and the driving assembly being arranged on a side of the carbon discharging assembly away from the outlet and connected with the carbon discharging assembly;

[0008] The carbon discharging assembly is used to discharge the solid carbon at the outlet.

[0009] In some embodiments, the driving assembly comprises:

[0010] a housing comprising a top wall and a side wall connected with the top wall, the top wall and the side wall enclosing a containing cavity, the top wall being opposite to the outlet;

[0011] A driving member movably arranged on a side of the side wall away from the accommodating cavity;

[0012] A driven member arranged in the accommodating cavity and rotatably connected to the top wall;

[0013] Wherein, the driving member and the driven member at least partially coincide in orthographic projection on the side wall, so that the driving member rotates to drive the driven member to rotate.

[0014] In some embodiments, the driving member is arranged spaced apart from the side wall, and the driven member is arranged spaced apart from the side wall.

[0015] In some embodiments, the side of the side wall away from the accommodating cavity is provided with a support platform, and the driving member is movably arranged on a side of the support platform away from the reaction part.

[0016] In some embodiments, the side of the support platform away from the reaction part is provided with an accommodating groove, and the driving member is movably arranged in the accommodating groove.

[0017] In some embodiments, the driving member comprises a first magnet, the driven member comprises a second magnet, the first magnet and the second magnet are magnetically opposite; when the driving member and the driven member are stationary, the first magnet and the second magnet at least partially coincide in orthographic projection on the side wall.

[0018] In some embodiments,

[0019] The driving member comprises:

[0020] A first support arranged around the side wall;

[0021] A plurality of first magnets arranged spaced apart outside the side wall and respectively connected to a side of the first support facing the side wall;

[0022] The driven member comprises:

[0023] A transmission shaft rotatably connected to the top wall;

[0024] A second support sleeved on the transmission shaft and fixedly connected with the transmission shaft;

[0025] A plurality of second magnets arranged spaced apart and respectively connected to a side of the second support facing the side wall;

[0026] Wherein, when the driving member and the driven member are stationary, each of the second magnets and one of the first magnets at least partially coincide in orthographic projection on the side wall.

[0027] In some embodiments, the housing further comprises a bottom wall connected to the side wall away from the top wall and covering the accommodating cavity, the second support and the second magnet are located in the accommodating cavity, and a portion of the transmission shaft passes through the bottom wall and is connected with the carbon discharge assembly, and the transmission shaft is rotatably connected with the bottom wall.

[0028] In some embodiments, the driving assembly further comprises a cooling assembly arranged around a side of the side wall away from the accommodating cavity.

[0029] In some embodiments, a flow guide part is further included, the flow guide part is connected with the driving assembly, a side of the flow guide part away from the driving assembly is arranged around the outlet and is connected with the reaction part, the flow guide part has a flow guide cavity, the carbon discharge assembly is arranged in the flow guide cavity, the outlet is in communication with the flow guide cavity, and the flow guide cavity is used for accommodating solid carbon generated by hydrogen production.

[0030] In some embodiments, the flow guide part further has:

[0031] a flow guide channel in communication with the flow guide cavity and inclined to extend away from the reaction part at an end of the flow guide cavity away from the driving assembly, so as to guide the solid carbon out of the accommodating cavity;

[0032] a first gas outlet arranged at a side of the flow guide cavity away from the flow guide channel and in communication with the flow guide cavity.

[0033] In some embodiments, a collection part is further included, the collection part is connected to an end of the flow guide part away from the driving assembly, the collection part has a temporary storage cavity in communication with the flow guide channel for temporarily storing the solid carbon guided out of the flow guide channel.

[0034] In some embodiments, the collection part further has a transition cavity and a collection cavity, the transition cavity is arranged at a side of the temporary storage cavity away from the flow guide channel, and the collection cavity is arranged at a side of the transition cavity away from the temporary storage cavity, a first valve is arranged between the temporary storage cavity and the transition cavity to separate or connect the temporary storage cavity and the transition cavity, and a second valve is arranged between the transition cavity and the collection cavity to separate or connect the transition cavity and the collection cavity.

[0035] In some embodiments, the carbon discharge assembly is a centrifugal impeller.

[0036] Correspondingly, the embodiments of the present application provide a hydrogen production method, which applies the hydrogen production device as described in any one of the foregoing embodiments, and comprises the following steps:

[0037] arranging a molten metal in the reaction chamber of the reaction part;

[0038] methane from the bottom of the reaction part into the reaction chamber, and passing the methane through the molten metal;

[0039] After the solid carbon produced after the methane cracking reaches the outlet position, the driving assembly is rotated to drive the carbon removal assembly to remove the solid carbon exceeding the outlet from the reaction part.

[0040] Beneficial effects: Compared with the prior art, the hydrogen production device provided by the embodiment of the present application comprises a reaction part and a carbon removal part; the reaction part has a reaction chamber, and the top of the reaction part is provided with an outlet communicating with the reaction chamber; the carbon removal part is opposite to the outlet and connected with the reaction part to seal the outlet; the carbon removal part comprises a carbon removal assembly and a driving assembly, the carbon removal assembly is arranged on the side of the outlet away from the reaction chamber, and the driving assembly is arranged on the side of the carbon removal assembly away from the outlet and connected with the carbon removal assembly; wherein the carbon removal assembly is used to remove the solid carbon at the outlet. The present application takes advantage of the characteristics that solid carbon is incompatible with molten metal and separates from each other, so that the solid carbon and the high-temperature molten metal present a layered state under the action of gravity. In the process of continuously cracking methane to produce hydrogen, the solid carbon continuously accumulates upward, and at this time, the carbon removal assembly is arranged at the outlet of the reaction part, which can remove the solid carbon which continues to accumulate upward from the outlet. In this way, the solid carbon can be removed during the methane cracking process, the carbon removal can be realized without stopping the machine, and the production efficiency is improved. At the same time, the carbon removal part is directly arranged above the outlet, which effectively reduces the occupation of space, simplifies the structure of the entire hydrogen production device, effectively reduces the redundancy of the device, and reduces unnecessary energy consumption and pipeline blockage.

[0041] Compared with the prior art, the embodiment of the present application provides a hydrogen production method, which applies the hydrogen production device as described in any one of the preceding embodiments, and comprises the following steps: arranging molten metal in the reaction chamber of the reaction part; passing methane from the bottom of the reaction part into the reaction chamber, and passing the methane through the molten metal; after the solid carbon produced after the methane cracking reaches the outlet position, rotating the driving assembly to drive the carbon removal assembly to remove the solid carbon exceeding the outlet from the reaction part. The hydrogen production method of the present application can realize continuous hydrogen production and carbon removal during the hydrogen production process by directly rotating the driving assembly to mobilize the carbon removal assembly to remove the solid carbon at the outlet to the corresponding collection part when the solid carbon gradually stacks upward from the reaction part and exceeds the outlet. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings described in the following are only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0043] Figure 1 is a schematic diagram of the overall structure of a hydrogen production device according to an embodiment of the present application;

[0044] Figure 2 is an exploded view of the overall structure of a hydrogen production device according to an embodiment of the present application;

[0045] Figure 3 is a sectional view of a hydrogen production device according to an embodiment of the present application;

[0046] Figure 4 is a partial sectional view of a hydrogen production device according to an embodiment of the present application;

[0047] Figure 5 is a schematic diagram of the overall structure of a carbon discharge part according to an embodiment of the present application;

[0048] Figure 6 is a schematic diagram of the overall structure of a driving member according to an embodiment of the present application.

[0049] Reference signs:

[0050] 1, reaction part; 11, reaction chamber; 12, outlet; 2, carbon discharge part; 21, carbon discharge assembly; 22, driving assembly; 221, housing; 2211, top wall; 2212, side wall; 2213, accommodating cavity; 2214, support table; 2215, accommodating groove; 2216, bottom wall; 2217, second gas outlet; 222, driving member; 2221, first magnet; 2222, first support; 223, driven member; 2231, second magnet; 2232, transmission shaft; 2233, second support; 224, cooling assembly; 3, flow guide part; 31, flow guide cavity; 32, flow guide channel; 33, first gas outlet; 4, collection part; 41, temporary storage cavity; 42, transition cavity; 43, collection cavity; 44, first valve; 45, second valve; 5, molten metal; 6, solid carbon. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort belong to the scope of protection of the present application.

[0052] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, at least one of which can be one, two or more, unless otherwise specifically limited. In the description of the present application, "vertical" means completely vertical at 90° or almost completely vertical, for example, within an angle range of 80°-100°, it is considered as vertical, similarly, "parallel" means completely parallel or almost completely parallel, for example, within a range of 10° of complete parallel, it is considered as parallel.

[0053] Please refer to Figures 1-6 The hydrogen production device described in the embodiments of the present application comprises a reaction part 1 and a carbon discharge part 2; the reaction part 1 has a reaction chamber 11, and the top of the reaction part 1 is provided with an outlet 12 which communicates with the reaction chamber 11; the carbon discharge part 2 is opposite to the outlet 12 and is connected with the reaction part 1 to seal the outlet 12; the carbon discharge part 2 comprises a carbon discharge assembly 21 and a driving assembly 22, the carbon discharge assembly 21 is arranged on the side of the outlet 12 away from the reaction chamber 11; the driving assembly 22 is arranged on the side of the carbon discharge assembly 21 away from the outlet 12 and is connected with the carbon discharge assembly 21; wherein the carbon discharge assembly 21 is used to discharge the solid carbon 6 at the outlet 12.

[0054] In the embodiments of the present application, by virtue of the characteristics that the solid carbon 6 is incompatible with the molten metal 5 and separates from each other, the solid carbon 6 and the high-temperature molten metal 5 present a layered state under the action of gravity, and in the process of continuous cracking of methane to produce hydrogen, the solid carbon 6 continuously accumulates upward, at this time, the carbon discharge assembly 21 is arranged at the outlet 12 of the reaction part 1, which can remove the solid carbon 6 which continues to accumulate upward from the outlet 12, so that the removal of the solid carbon 6 can be carried out during the process of cracking of methane, and non-stop carbon discharge is realized, and the production efficiency is improved.

[0055] In addition, the carbon discharge part 2 is directly arranged above the outlet 12 in the embodiment of the present application, which effectively reduces the space occupation, simplifies the structure of the hydrogen production device, effectively reduces the device redundancy, and reduces unnecessary energy consumption and pipeline blockage. Specifically, the high-temperature molten metal 5 of the embodiment of the present application is always located in the reaction chamber 11 of the reaction part 1, and only needs to maintain the temperature in the reaction chamber 11 by an external heating device. The outlet 12 is only arranged at the top of the reaction chamber 11, and the solid carbon 6 continuously accumulates upward with the continuous methane cracking. The high-temperature molten metal 5 is located below the solid carbon 6 and will not overflow and flow back. In this way, the heat loss of the high-temperature molten metal 5 is avoided, so that more energy is not consumed to heat the high-temperature molten metal 5 to maintain the temperature of the reaction chamber 11. At the same time, the high-temperature molten metal 5 is always located in the reaction chamber 11, avoiding the intermediate pipeline of the high-temperature molten metal 5 flowing out and flowing back, which can avoid the heat loss and the solidification and blockage of the high-temperature molten metal 5 in the reflux pipeline, and reduce the amount of high-temperature molten metal 5 in the reaction chamber 11.

[0056] In addition, it also needs to be explained that in the embodiment of the present application, the carbon discharge part 2 is located above the reaction chamber 11, the outlet 12 is located at the top of the reaction part 1, and the solid carbon 6 continuously accumulates upward after being generated. At this time, in the process of the solid carbon 6 accumulating upward, part of the molten metal 5 attached to the solid carbon 6 will continuously deposit downward. In the process of the solid carbon 6 continuously accumulating upward, the molten metal 5 and the solid carbon 6 are better separated, so the step of separating the solid carbon 6 and the molten metal 5 is omitted, and the overall structure is further simplified. At the same time, the carbon discharge part 2 is located above the reaction part 1, which effectively reduces the space occupation of the hydrogen production device on the ground, further reducing the production cost.

[0057] Please refer to Figure 2 and Figure 4 In some embodiments, the driving assembly 22 includes a housing 221, a driving member 222 and a driven member 223. The housing 221 includes a top wall 2211 and a side wall 2212 connected to the top wall 2211, and the top wall 2211 and the side wall 2212 enclose a containing cavity 2213. The top wall 2211 is opposite to the outlet 12. The driving member 222 is movably arranged on the side of the side wall 2212 away from the containing cavity 2213. The driven member 223 is arranged in the containing cavity 2213 and is rotatably connected to the top wall 2211. The orthographic projection of the driving member 222 and the driven member 223 on the side wall 2212 at least partially overlaps, so that the driving member 222 rotates to drive the driven member 223 to rotate.

[0058] In the embodiment of the present application, the housing 221 separates the driving member 222 and the driven member 223, and the containing cavity 2213 is used to accommodate the driven member 223, thereby driving the carbon discharge assembly 21 to rotate.

[0059] It should be noted that the active member 222 and the driven member 223 of the embodiment of the present application can be connected or not connected. The driven member 223 is rotationally connected to the top wall 2211 and does not pass through the top wall 2211. In this way, the driven member 223 is encapsulated in the accommodating cavity 2213, avoiding the penetration of the shell 221, thereby reducing the possibility of air leakage of the device. The cost of investment for sealing and the later maintenance cost are also reduced. The active member 222 is arranged outside the side wall 2212 of the shell 221 around the driven member 223. The rotation of the active member 222 drives the rotation of the driven member 223, and further drives the rotation of the carbon discharging assembly 21. Specifically, a magnetic field is established between the active member 222 and the driven member 223. By using the magnetic attraction characteristic, the rotation of the active member 222 attracts the driven member 223 to rotate.

[0060] Please refer to Figures 4-6 Further, in some embodiments, the active member 222 includes a first magnet 2221, and the driven member 223 includes a second magnet 2231. The first magnet 2221 and the second magnet 2231 are magnetically opposite. When the active member 222 and the driven member 223 are stopped, the orthographic projection of the first magnet 2221 and the second magnet 2231 on the side wall 2212 at least partially overlaps.

[0061] In the embodiment of the present application, the side wall 2212 is preferably a magnetic conductive material, such as a magnetic conductive metal. By setting the first magnet 2221 and the second magnet 2231 magnetically opposite, using the principle of opposite attraction, the rotation of the first magnet 2221 outside the side wall 2212 can drive the rotation of the second magnet 2231 inside the side wall 2212. Finally, the first magnet 2221 is attracted by the second magnet 2231. When the first magnet 2221 is fixed and stopped, the second magnet 2231 also stops, thereby stopping the rotation of the carbon discharging assembly 21.

[0062] It should be further noted that in the embodiment of the present application, when the active member 222 and the driven member 223 are stopped, the orthographic projection of the first magnet 2221 and the second magnet 2231 on the side wall 2212 at least partially overlaps. Preferably, the projection of one of which has a smaller area completely falls within the projection of the other which has a larger area. At this time, the distance between the first magnet 2221 and the second magnet 2231 can be kept to be the smallest, the relative stability of the first magnet 2221 and the second magnet 2231 can be maintained, and the relative stability of the position of the active member 222 and the driven member 223 can be ensured.

[0063] As shown in Figure 4 In some embodiments, the active member 222 is spaced apart from the side wall 2212, and the driven member 223 is spaced apart from the side wall 2212.

[0064] In the embodiment, the driving member 222 and the driven member 223 are spaced apart from the side wall 2212, and in the rotation of the driving member 222 and the driven member 223, the side wall 2212 is not contacted, so that the friction is effectively reduced, the abrasion of the driving member 222, the driven member 223 and the side wall 2212 is reduced, and the service life of them is improved.

[0065] As shown in Figure 4 and Figure 5 In some embodiments, the side wall 2212 is provided with a support platform 2214 away from the accommodating cavity 2213, and the driving member 222 is movably arranged on the side of the support platform 2214 away from the reaction part 1.

[0066] In the embodiment, the support platform 2214 supports the driving member 222 from below, so that the first member is guaranteed to be in the predetermined position, the situation that the driving member 222 deviates from the predetermined position and cannot realize the following rotation of the driven member 223 is avoided, and the stability of the driving member driving the rotation of the carbon removal assembly 21 is guaranteed.

[0067] As shown in Figure 4 and Figure 5 In some embodiments, the support platform 2214 is provided with an accommodating groove 2215 away from the reaction part 1, and the driving member 222 is movably arranged in the accommodating groove 2215.

[0068] In the embodiment, the accommodating groove 2215 is used for accommodating the driving member 222, so as to define the movement track of the driving member 222, and provide a guide function for the movement of the driving member 222.

[0069] Please refer to Figures 4-6 In some embodiments, the driving member 222 comprises a first support 2222 and a plurality of first magnets 2221, the first support 2222 is arranged around the side wall 2212, and the plurality of first magnets 2221 are spaced apart and arranged outside the side wall 2212 and connected to one side of the first support 2222 facing the side wall 2212. The driven member 223 comprises a transmission shaft 2232, a second support 2233 and a plurality of second magnets 2231, the transmission shaft 2232 is rotatably connected to the top wall 2211, the second support 2233 is sleeved on the transmission shaft 2232 and fixedly connected with the transmission shaft 2232, and the plurality of second magnets 2231 are spaced apart and connected to one side of the second support 2233 facing the side wall 2212. When the driving member 222 and the driven member 223 are stopped, each second magnet 2231 and each first magnet 2221 are at least partially overlapped in the orthographic projection on the side wall 2212.

[0070] In this embodiment, multiple first magnets 2221 are fixed on the first bracket 2222, thus forming a whole between the first bracket 2222 and the first magnets 2221. By adjusting the first bracket 2222, multiple first magnets 2221 can rotate simultaneously in one direction, improving the convenience of adjustment. Multiple second magnets 2231 are fixed on the second bracket 2233, realizing the linkage between the second magnets 2231 and the second bracket 2233. The rotation of the second bracket 2233 drives the rotation of the transmission shaft 2232, which in turn drives the carbon removal assembly 21 to rotate. Thus, when the carbon removal assembly 21 rotates, the solid carbon 6 at the outlet 12 is discharged from directly above the outlet 12.

[0071] It should be noted that, in this embodiment, the number of first magnets 2221 and second magnets 2231 is preferably equal, that is, multiple first magnets 2221 and multiple second magnets 2231 correspond one-to-one. Initially, when not rotating, the first magnets 2221 and second magnets 2231 are opposite each other. Then, the first bracket 2222 is rotated, and the first magnets 2221 rotate with the first bracket 2222. Simultaneously, due to magnetic attraction, the rotation of the first magnets 2221 drives the second magnets 2231 to move. The movement of the second magnets 2231 drives the second bracket 2233 to rotate, which in turn drives the transmission shaft 2232 to rotate, thereby driving the carbon removal assembly 21 to rotate for carbon removal. It should be noted that the rotation of multiple first magnets 2221 simultaneously drives the corresponding second magnets 2231 to rotate, providing more driving force, reducing the difficulty of driving, and achieving easy carbon removal.

[0072] It should also be noted that in this embodiment, the first support 2222 can be a ring structure, or a cross-shaped, star-shaped, or radiating structure with multiple support rods radiating outward from the center. This structure can both fix the second magnet 2231 and reduce the weight of the second support 2233, thereby further reducing the driving difficulty.

[0073] It should also be noted that the active component 222 in this embodiment can be rotated manually or driven by a motor.

[0074] like Figure 4 As shown, in some embodiments, the housing 221 further includes a bottom wall 2216, which is connected to the side of the side wall 2212 away from the top wall 2211 and covers the receiving cavity 2213. The second bracket 2233 and the second magnet 2231 are located in the receiving cavity 2213. A portion of the drive shaft 2232 passes through the bottom wall 2216 and is connected to the carbon removal assembly 21. The drive shaft 2232 is rotatably connected to the bottom wall 2216.

[0075] In the embodiment of the present application, the bottom wall 2216 covers the containing cavity 2213, which can effectively prevent the heat in the reaction chamber 11 from being transferred to the containing cavity 2213 through the outlet 12, and avoid the direct contact between the second magnet 2231 and the high-temperature gas discharged from the outlet 12. Thus, the temperature in the containing cavity 2213 is lower than that in the reaction chamber 11, which can protect the magnetism of the second magnet 2231 in the containing cavity 2213.

[0076] In addition, it should be noted that the bottom wall 2216 is rotatably connected with the transmission shaft 2232, and in this case, there may be a poor sealing condition between the bottom wall 2216 and the transmission shaft 2232. In this case, a small amount of gas may escape into the containing cavity 2213. Therefore, a second gas outlet 2217 can be further arranged on the shell 221 to guide the hydrogen in the containing cavity 2213 out.

[0077] Please refer to Figure 2 , Figure 4 and Figure 5 In some embodiments, the driving assembly 22 further comprises a cooling assembly 224, which is arranged around the side of the side wall 2212 away from the containing cavity 2213.

[0078] In the embodiment of the present application, the arrangement of the cooling assembly 224 can further reduce the temperature of the shell 221, and thus cool the inside of the containing cavity 2213, so as to ensure that the driven member 223 is in a low-temperature environment, and effectively protect the magnetism of the second magnet 2231 from being destroyed. In addition, the cooling assembly 224 is arranged on the side of the driving member 222 away from the top wall 2211, and in this case, the driving member 222 is located on the side of the cooling assembly 224 away from the reaction part 1, which can effectively block the heat of the high-temperature gas discharged from the reaction chamber 11 from being transferred to the driving member 222, and thus maintain the magnetic stability of the first magnet 2221 of the driving member 222. In this way, by arranging the cooling assembly 224, the driving assembly 22 can continuously and stably have the driving capability, and the service life thereof can be ensured.

[0079] It should be further noted that the cooling assembly 224 in the embodiment of the present application can be a cooling coil, which circulates cooling water inside to achieve continuous cooling.

[0080] As shown in Figures 1-3 In some embodiments, the hydrogen production device further comprises a flow guide part 3, which is connected with the driving assembly 22. The flow guide part 3 is arranged around the outlet 12 on the side away from the driving assembly 22 and is connected with the reaction part 1. The flow guide part 3 has a flow guide cavity 31, and the carbon removal assembly 21 is arranged in the flow guide cavity 31. The outlet 12 is in communication with the flow guide cavity 31, and the flow guide cavity 31 is used to contain the solid carbon 6 produced in the hydrogen production.

[0081] In the embodiments of the present application, the flow guide part 3 is arranged to accommodate the solid carbon 6 discharged from the carbon discharge assembly 21 at the outlet 12 in the hydrogen production process, which is equivalent to expanding the horizontal space at the outlet 12, and the solid carbon 6 is swept from above the outlet 12 into the flow guide cavity 31 of the flow guide part 3, so as to keep the outlet 12 free of accumulation of excess solid carbon 6.

[0082] For reference, please see Figure 3 and Figure 4 In some embodiments, the flow guide part 3 further has a flow guide channel 32 and a first gas outlet 33; the flow guide channel 32 is in communication with the flow guide cavity 31, and the end of the flow guide channel 32 away from the driving assembly 22 extends in a direction away from the reaction part 1, so as to guide the solid carbon 6 out of the accommodation cavity 2213; and the first gas outlet 33 is arranged on the side of the flow guide cavity 31 away from the flow guide channel 32 and is in communication with the flow guide cavity 31.

[0083] In the embodiments of the present application, the flow guide channel 32 is located at the end of the flow guide cavity 31 away from the driving assembly 22, and when the carbon discharge assembly 21 discharges the solid carbon 6 into the flow guide cavity 31, the solid carbon 6 will enter the flow guide channel 32 under the action of gravity and slide downward along the flow guide channel 32 due to the fact that the flow guide channel 32 is located below the flow guide cavity 31 and extends in a direction away from the reaction part 1. Meanwhile, in the hydrogen production process, the hydrogen produced by the cracking of methane will be discharged into the flow guide cavity 31 through the outlet 12, and therefore, the first gas outlet 33 is arranged on the flow guide part 3 and is in communication with the flow guide cavity 31, so as to smoothly discharge the hydrogen in the flow guide cavity 31, keep the gas pressure in the flow guide cavity 31 stable, and realize the continuous production and discharge of hydrogen.

[0084] For reference, please see Figures 1-3 In some embodiments, the hydrogen production device further comprises a collection part 4 connected to the end of the flow guide part 3 away from the driving assembly 22; the collection part 4 has a temporary storage cavity 41 in communication with the flow guide channel 32 for temporarily storing the solid carbon 6 guided out of the flow guide channel 32.

[0085] In the embodiments of the present application, the collection part 4 can be connected to the end of the flow guide channel 32 away from the flow guide cavity 31, and the temporary storage cavity 41 of the collection part 4 is in communication with the flow guide channel 32 to collect the solid carbon 6 discharged from the flow guide channel 32, and the flow guide channel 32 is sealed to ensure the sealing of the entire hydrogen production device.

[0086] As Figure 3As shown, in some embodiments, the collection part 4 further has a transition cavity 42 and a collection cavity 43, the transition cavity 42 is arranged on the side of the temporary storage cavity 41 away from the flow guide channel 32, and the collection cavity 43 is arranged on the side of the transition cavity 42 away from the temporary storage cavity 41; a first valve 44 is arranged between the temporary storage cavity 41 and the transition cavity 42 to separate or connect the temporary storage cavity 41 and the transition cavity 42; a second valve 45 is arranged between the transition cavity 42 and the collection cavity 43 to separate or connect the transition cavity 42 and the collection cavity 43.

[0087] In the embodiments of the present application, the temporary storage cavity 41 is used to continuously receive the solid carbon 6 discharged from the flow guide channel 32 and temporarily store the solid carbon 6. The first valve 44 and the second valve 45 are always in a closed state at the beginning. When the solid carbon 6 in the temporary storage cavity 41 is temporarily stored to a certain amount, the first valve 44 is first opened to make the temporary storage cavity 41 communicate with the transition cavity 42, at this time part of the solid carbon 6 in the temporary storage cavity 41 falls into the transition cavity 42 under the action of gravity. Then the first valve 44 is closed to make the temporary storage cavity 41 restore the sealed state, at this time the temporary storage cavity 41 is in a communication state with the flow guide channel 32, the flow guide cavity 31 and the reaction chamber 11, and the temporary storage cavity 41 is in a sealed state by closing the first valve 44 to avoid the leakage of hydrogen gas from the collection part 4. Then the second valve 45 is opened to make the transition cavity 42 communicate with the collection cavity 43, at this time the solid carbon 6 falls from the transition cavity 42 into the collection cavity 43 under the action of gravity. Then the second valve 45 is closed to seal the transition cavity 42, thereby achieving the effect of further sealing. At this time, the solid carbon 6 in the collection chamber can be transferred. It should be noted that during the transfer of the solid carbon 6, the second valve 45 is in a closed state, at this time the first valve 44 can be opened again to transfer the solid carbon 6 from the temporary storage cavity 41 to the transition cavity 42, thereby realizing the synchronous movement of the carbon.

[0088] As shown, in some embodiments, the carbon discharge assembly 21 is a centrifugal impeller. Figure 5

[0089] In the embodiments of the present application, the carbon discharge assembly 21 adopts a centrifugal impeller, which can generate centrifugal force when rotating to provide a driving force for the outward movement of the solid carbon 6, thereby throwing the solid carbon 6 out of the centrifugal impeller and achieving a more rapid and clean discharge of the solid carbon 6 from the opening, achieving a better carbon discharge effect and avoiding the accumulation of the solid carbon 6 around the opening, thereby maintaining a continuous and stable carbon discharge effect.

[0090] ​Correspondingly, the application provides a hydrogen production method, which applies the hydrogen production device of any one of the preceding embodiments, and includes the following steps: disposing high-temperature liquid metal in the reaction chamber 11 of the reaction part 1; introducing methane into the reaction chamber 11 from the bottom of the reaction part 1, and making the methane pass through the high-temperature molten liquid metal; after the solid carbon 6 produced after the cracking of the methane reaches the position of the outlet 12, rotating the driving assembly 22 to drive the carbon discharging assembly 21 to rotate to discharge the solid carbon 6 exceeding the outlet 12 from the reaction part 1.

[0091] The hydrogen production method of the application can not only realize efficient hydrogen production, but also discharge the solid carbon 6 produced in the hydrogen production process directly from the outlet 12 of the reaction part 1, improve the carbon discharging efficiency, and has a simple carbon discharging method and is convenient to operate.

[0092] In the above embodiments, the description of each embodiment has its own focus, and the part not described in detail in an embodiment can be referred to the relevant description of other embodiments.

[0093] The hydrogen production device and method provided by the embodiments of the application are described in detail above, and the principles and implementation manners of the application are described by using specific examples. The above description of the embodiments is only used to help understand the technical solutions of the application and the core idea thereof; those skilled in the art should understand that the technical solutions recorded in the preceding embodiments can be modified, or some technical features can be replaced equivalently; and the modification or replacement does not make the essence of the corresponding technical solution deviate from the scope of the technical solutions of the embodiments of the application.

Claims

1. A hydrogen production apparatus characterized by comprising: The device comprises: a reaction part (1) having a reaction chamber (11), a top of the reaction part (1) being provided with an outlet (12) in communication with the reaction chamber (11); a carbon discharge part (2) opposite to the outlet (12) and connected with the reaction part (1) to seal the outlet (12); the carbon discharge part (2) comprises a carbon discharge assembly (21) and a driving assembly (22), the carbon discharge assembly (21) being arranged on a side of the outlet (12) away from the reaction chamber (11), and the driving assembly (22) being arranged on a side of the carbon discharge assembly (21) away from the outlet (12) and connected with the carbon discharge assembly (21); the driving assembly (22) comprises a housing (221), a driving member (222) and a driven member (223), the housing (221) comprises a top wall (2211) and a side wall (2212) connected with the top wall (2211), and the top wall (2211) and the side wall (2212) enclose a containing cavity (2213); the driving member (222) is movably arranged on a side of the side wall (2212) away from the containing cavity (2213); the driven member (223) is arranged in the containing cavity (2213) and rotatably connected with the top wall (2211); wherein the driving member (222) and the driven member (223) at least partially coincide in orthographic projection on the side wall (2212) to enable the driving member (222) to rotate to drive the driven member (223) to rotate; the driving member (222) comprises a first magnet (2221), and the driven member (223) comprises a second magnet (2231), the first magnet (2221) and the second magnet (2231) being magnetically opposite; when the driving member (222) and the driven member (223) are stationary, the first magnet (2221) and the second magnet (2231) at least partially coincide in orthographic projection on the side wall (2212); wherein the carbon discharge assembly (21) is used to discharge solid carbon (6) at the outlet (12).

2. The hydrogen production apparatus according to claim 1, characterized by The top wall (2211) is opposite to the outlet (12).

3. The hydrogen production apparatus according to claim 2, characterized by The driving member (222) is arranged in spaced relation to the side wall (2212), and the driven member (223) is arranged in spaced relation to the side wall (2212).

4. The hydrogen production apparatus according to claim 3, characterized by A supporting table (2214) is arranged on a side of the side wall (2212) away from the containing cavity (2213), and the driving member (222) is movably arranged on a side of the supporting table (2214) away from the reaction part (1).

5. The hydrogen production apparatus according to claim 4, characterized by A containing groove (2215) is arranged on a side of the supporting table (2214) away from the reaction part (1), and the driving member (222) is movably arranged in the containing groove (2215).

6. The hydrogen production device according to claim 1, wherein the driving member (222) comprises: a first support (2222) arranged around the side wall (2212); A plurality of first magnets (2221) are arranged at intervals outside the side wall (2212) and connected to one side of the first support (2222) facing the side wall (2212) respectively; The driven member (223) comprises: A transmission shaft (2232) rotatably connected to the top wall (2211); A second support (2233) sleeved on the transmission shaft (2232) and fixedly connected with the transmission shaft (2232); A plurality of second magnets (2231) arranged at intervals and connected to one side of the second support (2233) facing the side wall (2212) respectively; Wherein, when the driving member (222) and the driven member (223) are stationary, each second magnet (2231) and one first magnet (2221) on the side wall (2212) at least partially overlap in orthographic projection.

7. The hydrogen production apparatus according to claim 6, characterized by The shell (221) further comprises a bottom wall (2216) connected to one side of the side wall (2212) away from the top wall (2211) and covering the accommodation cavity (2213), the second support (2233) and the second magnet (2231) are located in the accommodation cavity (2213), part of the transmission shaft (2232) passes through the bottom wall (2216) and is connected with the carbon discharge assembly (21), and the transmission shaft (2232) is rotatably connected with the bottom wall (2216).

8. The hydrogen production apparatus according to claim 2, wherein The driving assembly (22) further comprises a cooling assembly (224) arranged around one side of the side wall (2212) away from the accommodation cavity (2213).

9. The hydrogen production apparatus according to claim 2, wherein Further comprising a flow guide part (3), the flow guide part (3) is connected with the driving assembly (22), one side of the flow guide part (3) away from the driving assembly (22) is arranged around the outlet (12) and connected with the reaction part (1); the flow guide part (3) has a flow guide cavity (31), the carbon discharge assembly (21) is arranged in the flow guide cavity (31), the outlet (12) is communicated with the flow guide cavity (31), and the flow guide cavity (31) is used for accommodating solid carbon generated by hydrogen production.

10. The hydrogen production apparatus according to claim 9, characterized by The flow guide part (3) further has: A flow guide channel (32) communicated with the flow guide cavity (31), and one end of the flow guide channel (32) away from the driving assembly (22) extends in a direction away from the reaction part (1), so as to guide the solid carbon out of the accommodation cavity (2213); A first gas outlet (33) arranged on one side of the flow guide cavity (31) away from the flow guide channel (32) and communicated with the flow guide cavity (31).

11. The hydrogen production apparatus according to claim 10, characterized by The device further comprises a collecting part (4) connected to one end of the flow guiding part (3) away from the driving assembly (22); the collecting part (4) has a temporary storage cavity (41), a transition cavity (42) and a collecting cavity (43); the temporary storage cavity (41) is in communication with the flow guiding channel (32) for temporarily storing the solid carbon guided out of the flow guiding channel (32); the transition cavity (42) is arranged on the side of the temporary storage cavity (41) away from the flow guiding channel (32); the collecting cavity (43) is arranged on the side of the transition cavity (42) away from the temporary storage cavity (41); a first valve (44) is arranged between the temporary storage cavity (41) and the transition cavity (42) for separating or connecting the temporary storage cavity (41) and the transition cavity (42); a second valve (45) is arranged between the transition cavity (42) and the collecting cavity (43) for separating or connecting the transition cavity (42) and the collecting cavity (43).

12. The hydrogen production apparatus of claim 1, wherein, The carbon discharging assembly (21) is a centrifugal impeller.

13. A method of producing hydrogen, characterized by The hydrogen production device of any one of claims 1-12, comprising the following steps: A molten metal (5) is arranged in the reaction chamber (11) of the reaction part (1); Methane is introduced into the reaction chamber (11) from the bottom of the reaction part (1) and passes through the molten metal (5); After the solid carbon produced after the cracking of the methane reaches the position of the outlet (12), the driving assembly (22) is rotated, and the driving assembly (22) drives the carbon discharging assembly (21) to rotate to discharge the solid carbon (6) exceeding the outlet (12) out of the reaction part (1).

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