A gas-solid particle reactor for particle stacking and its operating method

Abstract

This invention discloses a gas-solid particle reactor and its operating method for particle stacking, relating to the field of carbon sequestration and emission reduction equipment technology. It includes an inlet / outlet device, a cylindrical reactor, an outlet device, and a production platform control mechanism. The production platform control mechanism is located below the cylindrical reactor, and the heating device is located on the outer side of the middle section of the cylindrical reactor. The inlet / outlet device is connected to the end of the cylindrical reactor via a sealed bearing A, and the outlet device is connected to the tail of the cylindrical reactor via a sealed bearing B, thus ensuring that the positions of the inlet / outlet device and the outlet device are not affected regardless of the rotation of the cylindrical reactor. This device, through particle stacking reaction, pioneers a new method for methane cracking to produce hydrogen, realizing the continuous production of nano-additives, and is of great significance for the clean utilization of methane gas and carbon sequestration and emission reduction.

Description

Technical fields:

[0002] This invention patent relates to the field of carbon sequestration and emission reduction equipment technology, and in particular to a particle stacked gas-solid particle reactor and its working method. Background technology:

[0004] The massive consumption of fossil fuels has led to greenhouse gas emissions. The enormous CO2 emissions will bring enormous disasters to humanity. Therefore, the development and utilization of clean and efficient new energy sources is increasingly urgent. Hydrogen energy, as a clean and efficient secondary energy source, is considered one of the most promising clean fuels.

[0005] Currently, most hydrogen production comes from methane steam reforming, but this reaction requires high temperature and pressure and produces a large amount of CO2. The main solution to this problem is to implement a gasifier in the coal seam and then produce hydrogen by spraying water, while sealing carbon dioxide underground as much as possible. However, this method cannot monitor the specific reaction status and will affect surface buildings, leading to three problems.

[0006] Another method is to produce hydrogen by electrolyzing water. However, due to the stable molecular structure of water, the energy consumption for hydrogen production through water electrolysis is high and the yield is low, so it can only be produced on a small scale.

[0007] There is a lack of existing technology that allows for convenient manual monitoring of production status, does not generate carbon dioxide, has low production costs, and enables continuous production. Summary of the Invention:

[0009] To address the shortcomings of existing technologies, a gas-solid particle reactor and its operating method for particle stacking are provided. The reactor has a simple structure and is easy to use. It can realize the cracking of methane to generate hydrogen and carbon nanomaterials without CO2 emissions. At the same time, the generated carbon nanomaterials can be used as additives to effectively improve the compressive strength of cement-based composite materials, thereby reducing the amount of cement used and effectively reducing CO2 emissions.

[0010] To achieve the above reaction, the present invention provides a gas-solid particle reactor for particle stacking, comprising an inlet / outlet device, a cylindrical reactor, an outlet device, and a production platform control mechanism; wherein the production platform control mechanism is located below the cylindrical reactor, and the heating device is located on the outer side of the middle section of the cylindrical reactor; the inlet / outlet device is connected to the end of the cylindrical reactor through a sealed bearing A, and the outlet device is connected to the tail of the cylindrical reactor through a sealed bearing B, thereby ensuring that the positions of the inlet / outlet device and the outlet device are not affected regardless of the rotation of the cylindrical reactor.

[0011] The cylindrical reactor includes a rotating cylinder, with a heating device on the outer side of the middle section of the rotating cylinder, and a granular material stacked reaction chamber on the inner side. The granular material stacked reaction chamber is equipped with a selective material interception device that intercepts the fed coarse material and allows the fed fine material to pass through. The front and rear ends of the rotating cylinder are respectively equipped with bearing supports A and B. The outer side of the rotating cylinder is equipped with a transmission device B connected to a power source. The power source drives the transmission device B, thereby enabling the rotating cylinder to rotate in the middle of the bearing support device.

[0012] The gas inlet and outlet device includes a sleeve structure that is fitted onto the end of a rotating cylinder at one end via a sealed bearing A. The other end of the sleeve structure is sealed, and a feed pipe is provided in the middle of the seal, which is inserted into the sleeve structure and extends into the rotating cylinder. The feed pipe conveys the material for methane cracking to produce hydrogen into the rotating cylinder through an internal material conveying device. The material includes coarse material that will be blocked by a selective material retention device and fine material that is allowed to pass through the selective material retention device. A gas inlet pipe is vertically provided at the top of the sleeve structure, and a discharge port B for discharging the coarse material after the reaction is vertically provided at the bottom of the sleeve structure.

[0013] The discharge device includes a sleeve structure that is fitted at one end to the tail of the rotating cylinder via a sealed bearing B. The top of the sleeve structure is vertically provided with an air outlet pipe, and the bottom of the discharge device is vertically provided with a discharge port A for discharging the fine material after the reaction.

[0014] The production platform control mechanism includes an equipment platform for setting up a cylindrical reactor. Bearing supports A and B are installed on the equipment platform. Two lifting devices A and B, which can be adjusted in height, are respectively installed below the equipment platform. The equipment platform is also equipped with a power source for driving transmission device B. The positive and negative tilt angles of the equipment platform can be adjusted by adjusting lifting devices A and B.

[0015] Furthermore, a gap is left between the feed pipe and the end opening of the rotary cylinder to allow material to be discharged.

[0016] Furthermore, the selective material interception device is a filter screen, the mesh size of which meets the requirement of intercepting coarse material fed into the feed pipe while allowing fine material to pass through.

[0017] Furthermore, the power source includes a transmission device A fixed to the equipment platform via a transmission support, a motor B connected to and driven by the transmission device A at its center, and the outer side of the transmission device A meshing with the transmission device B.

[0018] Furthermore, the coarse material is natural sand, including river sand, gravel, quartz sand, or artificially synthesized high-temperature resistant materials; its particle size ranges from 0.1 to 10 mm.

[0019] Furthermore, the fine materials serve as the substrate for the reaction, including fly ash, silica fume, and cement powder. The particle size is selected based on the selective material retention device in conjunction with the coarse materials. The particle size of the fine materials is less than 0.1 mm, which promotes the cracking reaction of methane. After the reaction, its physicochemical properties do not change.

[0020] Furthermore, in the selective material retention device, coarse and fine materials are stacked. The coarse material is intercepted at the selective material retention device, where some fine material is stacked. The coarse material disperses and suspends the fine material, thereby allowing methane to crack and generate carbon nanomaterials. The fine material serves as the substrate for the methane cracking reaction. The carbon nanomaterials generated by methane cracking are deposited on the surface of the fine material. During the reaction, the surface of the fine material is rapidly covered with carbon nanomaterials. With the movement of the fine material, the carbon nanomaterials are discharged from the discharge port A. The coarse material only needs to be replaced periodically.

[0021] Furthermore, multiple lifting plates are axially arranged on the inner wall of the rotary cylinder, with each lifting plate penetrating the entire rotary cylinder. When the rotary cylinder rotates and heats up, the lifting plates on the inner wall of the rotary cylinder stir and mix the material evenly, so that it is heated evenly and comes into full contact with methane and hydrogen.

[0022] A method for operating a gas-solid particle reactor of particle stacking type, comprising the following steps:

[0023] Adjust the height of lifting device A and lifting device B so that the rotating cylinder is tilted at an angle of 0~30°, with the air inlet and discharge device side higher than the discharge device side.

[0024] Protective gas is continuously introduced into the rotating cylinder through the intake pipe to expel oxygen;

[0025] The coarse material is conveyed into the rotary cylinder through the material conveying device in the feed pipe, with a rotation speed of 1-60 rpm;

[0026] Coarse material is fed into the rotary cylinder through the feed pipe. The feed rate is controlled so that the coarse material cannot completely block the selective material interception device. During the rotation of the rotary cylinder, the material is continuously lifted and then dropped by the lifting plates fixed on the inner wall of the rotary cylinder, so that the coarse material moves from high to low and is intercepted at the selective material interception device, where the coarse material accumulates.

[0027] Methane and hydrogen are introduced through the intake pipe, and the heating device is activated to heat the gas to 800-900 degrees Celsius.

[0028] Fine materials are continuously fed into a rotating and heated cylinder through a feed pipe. During the rotation of the cylinder, the fine materials are moved from a high position to a low position by the action of the lifting plates. After mixing with coarse materials, they form a substrate for the methane cracking reaction, promoting the cracking of methane to generate hydrogen. During the hydrogen generation process, carbon material is rapidly deposited on the surface of the fine materials, thereby reducing the effectiveness of the fine materials. Subsequently, the fine materials with carbon material deposited pass through a selective material retention device and are discharged from outlet A. The carbon material is carbon nanosheets or carbon nanotubes. The hydrogen generated by the reaction, unreacted methane, and protective gas are discharged through the outlet pipe and collected and treated uniformly.

[0029] Furthermore, after a period of use, coarse materials need to be unloaded and replaced periodically. The unloading process for coarse materials is as follows: Adjust the height of lifting device A and lifting device B so that the rotary cylinder is tilted and the material feeding system side is lower than the discharge device side; open discharge port B, start motor B, and let the rotary cylinder rotate at a constant speed. The coarse materials move from high to low and are finally discharged from discharge port B.

[0030] Beneficial effects:

[0031] In this device, methane and hydrogen are cracked at 800-900 degrees Celsius, with sand as the supporting framework and fly ash and other particulate materials as the substrate, to generate hydrogen and carbon nanomaterials, with no CO2 emissions. At the same time, the generated carbon nanomaterials can be used as additives to effectively improve the compressive strength of cement-based composite materials, thereby reducing the amount of cement used and further reducing CO2 emissions.

[0032] This device features a granular material stacking reaction chamber. The chamber is equipped with a selective material retention device that intercepts the fed coarse material while allowing the fine material to pass through. This allows the device to form a granular reaction pattern during operation, where coarse and fine materials are stacked, while simultaneously ensuring the rapid passage and discharge of fine materials, thus achieving efficient industrial-scale production. The device has two discharge ports for convenient periodic replacement of coarse materials, enabling continuous production of methane catalytic cracking for hydrogen production and carbon nanoparticle additives. Technically, this device, through its granular stacking reaction method, pioneers a new method for methane cracking for hydrogen production and achieves continuous production of nanoparticle additives, which is of great significance for the clean utilization of methane gas and carbon sequestration and emission reduction. Attached image description:

[0034] Figure 1 This is a schematic diagram of the overall structure of the gas-solid particle reactor of the present invention, which is used for particle stacking.

[0035] Figure 2 This is the present invention. Figure 1 Schematic diagram of section AA

[0036] Figure 3 This is the present invention. Figure 1 Schematic diagram of the BB section;

[0037] Figure 4 This is the present invention. Figure 1 A magnified view of a partially stacked reaction chamber for medium-sized particles.

[0038] In the diagram: 1-Feed pipe, 2-Transmission support, 3-Air inlet pipe, 4-Sealed bearing A, 5-Transmission device B, 6-Motor B, 7-Material conveying device, 8-Rotating cylinder, 9-Discharge port A, 10-Heating device, 11-Bearing support A, 12-Air outlet pipe, 13-Sealed bearing B, 14-Discharge device, 15-Selective material interception device, 16-Coarse material, 17-Fine material, 18-Transmission device A, 19-Bearing support B, 20-Discharge port B, 21-Lifting device A, 22-Equipment platform, 23-Lifting device B, 24-Lifting plate, 25-Air inlet and outlet device. Detailed implementation method:

[0040] The embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0041] like Figure 1 As shown, the present invention provides a gas-solid particle reactor for particle stacking, characterized in that it includes an inlet / outlet device 25, a cylindrical reactor, an outlet device 14, and a production platform control mechanism; wherein the production platform control mechanism is located below the cylindrical reactor, and the heating device is located on the outer side of the middle section of the cylindrical reactor; the inlet / outlet device 25 is connected to the end of the cylindrical reactor via a sealed bearing A4, and the outlet device 14 is connected to the tail of the cylindrical reactor via a sealed bearing B13, thereby ensuring that the positions of the inlet / outlet device 25 and the outlet device 14 are not affected regardless of the rotation of the cylindrical reactor.

[0042] The cylindrical reactor includes a rotating cylinder 8. A heating device 10 is provided on the outer side of the middle section of the rotating cylinder 8, and a granular material stacked reaction chamber is provided on the inner side. The granular material stacked reaction chamber is provided with a selective material interception device 15 that intercepts the fed coarse material 16 and allows the fed fine material 17 to pass through. The front and rear ends of the rotating cylinder 8 are respectively provided with bearing supports A11 and B19. The outer side of the rotating cylinder 8 is provided with a transmission device B5 connected to a power source. The power source drives the transmission device B5, so that the rotating cylinder 8 can rotate in the middle of the bearing support device.

[0043] The inlet and outlet device 25 includes a sleeve structure that is fitted onto the end of the rotating cylinder 8 via a sealed bearing A4 at one end. The other end of the sleeve structure is sealed, and a feed pipe 1 is provided in the middle of the seal, which is inserted into the sleeve structure and extends into the rotating cylinder 8. The feed pipe 1 conveys the material for methane cracking to produce hydrogen into the rotating cylinder 8 through an internally provided material conveying device 7. The material includes coarse material 16 that will be blocked by the selective material interception device 15 and fine material 17 that is allowed to pass through the selective material interception device 15. An inlet pipe 3 is vertically provided at the top of the sleeve structure, and a discharge port B20 for discharging the coarse material 16 after the reaction is vertically provided at the bottom of the sleeve structure. A gap is left between the feed pipe 1 and the end opening of the rotating cylinder 8 to allow material discharge.

[0044] The discharge device 14 includes a sleeve structure that is fitted at one end to the tail of the rotary cylinder 8 via a sealed bearing B13. The top of the sleeve structure is vertically provided with an air outlet pipe 12, and the bottom of the discharge device 14 is vertically provided with a discharge port A9 for discharging the fine material 17 after the reaction.

[0045] The production platform control mechanism includes an equipment platform 22 for setting up a cylindrical reactor. Bearing supports A11 and B19 are installed on the equipment platform 22. Two lifting devices A21 and B23, which can be adjusted in height, are respectively installed below the equipment platform 22. The equipment platform 22 is also equipped with a power source for driving transmission device B5. The positive and negative tilt angles of the equipment platform 22 can be adjusted by adjusting the lifting devices A21 and B23.

[0046] Figure 4 As shown, the selective material interception device 15 is a filter screen, and the mesh size of the filter screen meets the requirement of intercepting the coarse material 16 fed into the feed pipe and allowing the fine material 17 to pass through.

[0047] like Figure 2 As shown, the power source includes a transmission device A18 fixed to the equipment platform via a transmission support 2. A motor B6 is connected to and driven by the center of the transmission device A18, and the outer side of the transmission device A18 meshes with the transmission device B5.

[0048] The coarse material 16 is natural sand, including river sand, gravel, quartz sand, or artificially synthesized high-temperature resistant materials; its particle size ranges from 0.1 to 10 mm. The fine material 17 is a reaction substrate, including fly ash, silica fume, and cement powder. The particle size is selected according to the selective material retention device 15 in conjunction with the coarse material 16. The particle size of the fine material 17 is less than 0.1 mm to promote the cracking reaction of methane. Its physicochemical properties do not change after the reaction.

[0049] In the selective material retention device 15, coarse material 16 and fine material 17 are stacked. The coarse material 16 is intercepted at the selective material retention device 15. Some fine material 17 is stacked in the coarse material 16. The coarse material 16 is used to disperse and suspend the fine material 17, so that methane cracking generates carbon nanomaterials. The fine material 17 serves as the substrate for the methane cracking reaction. The carbon nanomaterials generated by methane cracking are deposited on the surface of the fine material 17. During the reaction, the surface of the fine material 17 is rapidly covered with carbon nanomaterials. With the movement of the fine material 17, the carbon nanomaterials are discharged from the discharge port A9. The coarse material 16 only needs to be replaced periodically.

[0050] like Figure 3 As shown, multiple lifting plates 24 are axially arranged on the inner wall of the rotary cylinder 8. Each lifting plate 24 runs through the entire rotary cylinder 8. When the rotary cylinder 8 is rotating and heating, the lifting plates 24 on the inner wall of the rotary cylinder 8 stir and mix the material evenly, so that it is heated evenly and comes into full contact with methane and hydrogen.

[0051] During operation, adjust the heights of lifting devices A and B to tilt the cylindrical reactor, with the left side higher than the right. Introduce protective gas through the inlet. Start motor B to rotate the cylindrical reactor at a uniform speed. Feed coarse material into the cylindrical reactor via a material conveying device. During the reactor's rotation, the material is lifted and scattered by lifting plates fixed to the inner wall. The material moves from left to right, from high to low, and is retained at the selective material retention device, where coarse material accumulates. Introduce methane and hydrogen through the inlet. Start the heating device and heat to 800-900 degrees Celsius. Subsequently, continuously feed fine material into the cylindrical reactor via the material conveying device. During the reactor's rotation, the fine material moves from high to low, passing through the coarse material and the selective material retention device. As the fine material passes through the coarse material, the two materials mix, forming a substrate for the methane cracking reaction. This promotes the cracking of methane to produce hydrogen and deposits carbon material within the fine material, which is then discharged from outlet A along with the fine material. The hydrogen produced in the reaction, unreacted methane, and protective gases are discharged from the gas outlet and collected for unified treatment.

[0052] After a period of use, the coarse material needs to be periodically unloaded and replaced. The unloading process for the coarse material is as follows: Adjust the height of lifting device A and lifting device B so that the cylindrical reactor is tilted, with the left side lower than the right side. Open discharge port B and start motor B to make the cylindrical reactor rotate at a uniform speed. The coarse material moves from the higher to the lower position and is discharged through discharge port B, thus achieving the unloading of the coarse material.

[0053] Coarse material 16 is intercepted at the selective material retention device 15. The function of coarse material 16 is to disperse and suspend fine material 17, allowing methane to crack and generate carbon nanomaterials of a specific form. Fine material 17 acts as a substrate for the methane cracking reaction. The carbon nanomaterials generated from methane cracking are deposited on the surface of fine material 17 and, along with the movement of fine material 17, are carried away from the reaction device through the discharge port A9. Once the fine material 17 is encapsulated by the deposited carbon nanomaterials, its effectiveness is greatly reduced, so fine material 17 needs continuous replenishment. Coarse material 16 primarily supports and suspends fine material 17, and its service life is much longer than that of fine material 17, so coarse material 16 only needs to be replaced periodically.

Claims

1. A gas-solid particle reactor for particle stacking, characterized in that: It includes an air inlet and outlet device (25), a cylindrical reactor, an outlet device (14), and a production platform control mechanism; wherein the production platform control mechanism is located below the cylindrical reactor, and the heating device is located on the outer side of the middle section of the cylindrical reactor; the air inlet and outlet device (25) is connected to the end of the cylindrical reactor through a sealed bearing A (4), and the outlet device (14) is connected to the tail of the cylindrical reactor through a sealed bearing B (13), thereby ensuring that the position of the air inlet and outlet device (25) and the outlet device (14) is not affected when the cylindrical reactor rotates; The cylindrical reactor includes a rotating cylinder (8) capable of rotation. A heating device (10) is provided on the outer side of the middle section of the rotating cylinder (8), and a granular material stacked reaction chamber is provided on the inner side. A selective material interception device (15) is provided in the granular material stacked reaction chamber to intercept the fed coarse material (16) and allow the fed fine material (17) to pass through. Bearing supports A (11) and B (19) are provided at the front and rear ends of the rotating cylinder (8) respectively. A transmission device B (5) connected to a power source is provided on the outer side of the rotating cylinder (8). The power source drives the transmission device B (5) so that the rotating cylinder (8) can rotate in the middle of the bearing support device. The inlet and outlet device (25) includes a sleeve structure that is fitted at one end of the rotating cylinder (8) through a sealed bearing A (4). The other end of the sleeve structure is sealed. A feed pipe (1) is provided in the middle of the seal and inserted into the sleeve structure until it reaches the rotating cylinder (8). The feed pipe (1) conveys the material for methane cracking to produce hydrogen into the rotating cylinder (8) through the internally provided material conveying device (7). The material includes coarse material (16) that will be blocked by the selective material interception device (15) and fine material (17) that is allowed to pass through the selective material interception device (15). An inlet pipe (3) is vertically provided at the top of the sleeve structure. A discharge port B (20) for discharging the coarse material (16) after the reaction is vertically provided at the bottom of the sleeve structure. The discharge device (14) includes a sleeve structure that is fitted at one end of the rotating cylinder (8) through a sealed bearing B (13). The top of the sleeve structure is vertically provided with an air outlet pipe (12), and the bottom of the discharge device (14) is vertically provided with a discharge port A (9) for discharging the fine material (17) after the reaction. The production platform control mechanism includes an equipment platform (22) for setting up a cylindrical reactor, bearing support A (11) and bearing support B (19) set on the equipment platform (22), and two lifting devices A (21) and B (23) that can be adjusted in height respectively are provided under the equipment platform (22). The equipment platform (22) is also provided with a power source for driving transmission device B (5). The positive and negative tilt angles of the equipment platform (22) can be changed by adjusting the lifting device A (21) and lifting device B (23). The selective material interception device (15) is a filter screen, the mesh size of which meets the requirement of intercepting the coarse material (16) fed into the feed pipe and allowing the fine material (17) to pass through; The coarse material (16) is natural sand, including river sand, quartz sand, or artificially synthesized high-temperature resistant materials; its particle size ranges from 0.1 to 10 mm. The fine material (17) is the substrate for the reaction, including fly ash, silicon powder and cement powder. The particle size is selected according to the selective material retention device (15) in conjunction with the coarse material (16). The particle size of the fine material (17) is less than 0.1 mm.

2. The gas-solid particle reactor for particle stacking as described in claim 1, characterized in that: A gap is left between the feed pipe (1) and the end opening of the rotary cylinder (8) to allow material to be discharged.

3. The gas-solid particle reactor for particle stacking as described in claim 1, characterized in that: The power source includes a transmission device A (18) fixed on the equipment platform by a transmission support (2). A motor B (6) is connected to the center of the transmission device A (18) and driven by it. The outer side of the transmission device A (18) meshes with the transmission device B (5).

4. The gas-solid particle reactor for particle stacking according to claim 1, characterized in that: The coarse material (16) and fine material (17) are stacked in the selective material retention device (15). The coarse material (16) is intercepted at the selective material retention device (15). Some fine material (17) is stacked in the coarse material (16). The coarse material (16) is used to disperse and suspend the fine material (17), so that the methane cracking generates carbon nanomaterials. The fine material (17) serves as the substrate for the methane cracking reaction. The carbon nanomaterials generated by the methane cracking are deposited on the surface of the fine material (17). During the reaction, the surface of the fine material (17) is quickly covered with carbon nanomaterials. With the movement of the fine material (17), the carbon nanomaterials are discharged from the discharge port A (9). The coarse material (16) only needs to be replaced periodically.

5. The gas-solid particle reactor for particle stacking according to claim 4, characterized in that: Multiple lifting plates (24) are axially arranged on the inner wall of the rotary cylinder (8). Each lifting plate (24) runs through the entire rotary cylinder (8). When the rotary cylinder (8) is rotating and heating, the lifting plates (24) on the inner wall of the rotary cylinder (8) stir and mix the material evenly, so that it is heated evenly and fully contacts methane and hydrogen.

6. A method of operating the gas-solid particle reactor for particle stacking as described in any one of claims 1-5, characterized in that... The steps are as follows: Adjust the height of lifting device A (21) and lifting device B (23) so that the rotary cylinder (8) is tilted and the side of the air inlet and outlet device (25) is higher than the side of the outlet device (14); Protective gas is continuously introduced into the rotating cylinder (8) through the air inlet pipe (3) to expel oxygen; Start motor B (6), and motor B (6) causes the rotating cylinder (8) to rotate at a constant speed through transmission device B (5); The coarse material (16) is conveyed to the rotary cylinder (8) through the material conveying device (7) in the feed pipe (1). The feed rate is controlled so that the coarse material (16) cannot completely block the selective material interception device (15). During the rotation of the rotary cylinder (8), the material is continuously lifted and then dropped by the lifting plate (24) fixed on the inner wall of the rotary cylinder (8), so that the coarse material (16) moves from high to low and is intercepted at the selective material interception device (15), where the coarse material (16) accumulates. Methane and hydrogen are introduced through the intake pipe (3), and the heating device is started to heat to 800-900 degrees Celsius; Fine material (17) is continuously fed into a rotating and heated cylinder (8) through a feed pipe (1). During the rotation of the cylinder (8), the fine material (17) is moved from a high position to a low position by the lifting plate (24). After mixing with coarse material (16), it forms a substrate for methane cracking reaction, promoting the cracking of methane to generate hydrogen. During the generation of hydrogen, carbon material is rapidly deposited on the surface of the fine material (17), thereby reducing the effect of the fine material (17). Subsequently, the fine material (17) with carbon material deposited passes through the selective material interception device (15) and is discharged from the discharge port A (9). The carbon material is carbon nanosheets or carbon nanotubes. The hydrogen generated by the reaction, unreacted methane and protective gas are discharged through the gas outlet pipe (12) and collected and treated uniformly.

7. The working method according to claim 6, characterized in that, After a period of use, the coarse material (16) needs to be unloaded and replaced regularly. The unloading process of the coarse material (16) is as follows: Adjust the height of the lifting device A (21) and the lifting device B (23) so that the rotary cylinder (8) is tilted and the material feeding system side is lower than the discharge device side; open the discharge port B, start the motor B (6), and let the rotary cylinder (8) rotate at a constant speed. The coarse material moves from high to low and is finally discharged from the discharge port B (20).

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