Carbon negative electrode material production device and process

Abstract

The invention discloses a carbon negative electrode material production device and process, and relates to the technical field of carbon negative electrode material production, the carbon negative electrode material production device comprises a heating mechanism, a rotating mechanism, a wall adhering mechanism, a ventilation mechanism and a carbon powder collecting mechanism; the heating mechanism comprises a cylinder body, a cavity is formed in the cylinder wall of the cylinder body, a heater is fixed in the cavity, and the heating mechanism is used for heating gas to react; the rotating mechanism is connected with the heating mechanism and used for driving the wall attaching mechanism to rotate and switch stations. Natural gas is fully attached to a heating position in an extrusion wall attaching mode, the natural gas fully reacts, the reaction degree of the natural gas is improved, the phenomenon of incomplete reaction of the natural gas is avoided, the heating position is cleaned, it is avoided that carbon powder is left at the heating position to affect heating, and waste caused by carbon powder left at the heating position is reduced; and meanwhile, gas and solid are separated by utilizing the characteristics of reactants, so that dust is prevented from remaining in the pipeline when the gas and the dust are mixed and discharged.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon negative electrode material production, and in particular to a carbon negative electrode material production device and process. Background Art

[0002] In the prior art, the authorization announcement number is: CN115709982B, a method and device for preparing carbon powder for hard carbon negative electrode material, including the following steps: S1: evacuate the reaction chamber to an absolute pressure of less than 500Pa; S2: quickly heat the reaction chamber to 1000-1150°C, and control the absolute pressure below 1000Pa; S3: maintain the temperature of the reaction chamber at 1000-1150°C, introduce natural gas, and control the absolute pressure at 2000-10000Pa; obtain a mixed gas containing carbon powder; S4: cool the mixed gas containing carbon powder: S5: filter the cooled mixed gas containing carbon powder for solid-gas separation, and purify the collected solid to obtain carbon powder for hard carbon negative electrode material. The preparation device includes a carbon powder deposition chamber, a gas cooling chamber, a carbon powder collection chamber, and a gas collection chamber, which are connected in sequence through pipelines. This application has the effect of reducing costs and reducing environmental pollution.

[0003] Although the above scheme has the above advantages, when the high-temperature reaction is carried out in the carbon powder deposition chamber, the above scheme uses a spiral air intake method to make the gas move down along the chamber wall, and then transports the gas and carbon powder out from the pipe below after the reaction. However, because the natural gas is decomposed into carbon powder and hydrogen during the high-temperature reaction, and because the density of hydrogen is lower than that of natural gas, there will be an upward force after the hydrogen is decomposed, which will cause a certain degree of confusion in the gas when the natural gas spirally adheres to the chamber wall. Moreover, the gas outlet is located below, and the unreacted natural gas will settle and be extracted after the hydrogen rises, so it is easy to cause incomplete reaction. In addition, after the heating position contacts with the natural gas, the carbon powder of the natural gas reaction will remain on the chamber wall, causing the carbon powder to remain in the room and cannot be completely discharged with the gas. While the carbon powder is discharged with the gas, it is also easy to cause residual phenomenon inside the pipeline. Summary of the invention

[0004] The present invention provides a carbon negative electrode material production device and process to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A carbon negative electrode material production device, comprising a heating mechanism, a rotating mechanism, a wall-attaching mechanism, a ventilation mechanism and a carbon powder collecting mechanism; The heating mechanism comprises a cylinder, a cylinder wall of which is provided with a cavity, a heater is fixed inside the cavity, and the heating mechanism is used for heating the gas for reaction; The rotating mechanism is connected to the heating mechanism and is used to drive the wall-attaching mechanism to rotate and switch positions; The wall-adhering mechanism is installed inside the heating mechanism and connected to the rotating mechanism for gas wall-adhering reaction and carbon powder processing; The ventilation mechanism is connected with the rotating mechanism and the wall-adhering mechanism and is used to introduce natural gas; The carbon powder collecting mechanism is connected with the heating mechanism and the wall sticking mechanism and is used for collecting carbon powder.

[0006] Furthermore, the heating mechanism also includes a support frame fixed to the outside of the cylinder, a conical cover plate is fixed to the top of the cylinder, and an air outlet pipe is fixed through the inside of the conical cover plate.

[0007] Furthermore, the rotating mechanism is rotatably connected to a hollow shaft inside the conical cover plate, a plurality of connecting rods are fixed to the bottom end of the hollow shaft, a gear one is fixed to the top outer wall of the hollow shaft, a gear two is meshed with one side of the gear one, a motor is fixed to the top of the conical cover plate, and an output shaft of the motor is fixedly connected to gear two.

[0008] Further, the wall-adhering mechanism comprises a gas box fixed to one end of the connecting rod, a plurality of the gas boxes are sleeved inside the cylinder, and the opening of the gas box faces the inner wall of the cylinder, the opening edge of the gas box is in contact with the inner wall of the cylinder, the opening edge of the gas box is in the shape of a knife edge, a hydrogen outlet is provided at the top of the gas box, a filter material is provided inside the hydrogen outlet, and a carbon powder outlet is provided at the bottom; A top plate is fixed on the top of the plurality of gas boxes, the top plate is fixed on the outside of the hollow shaft, a sealing plate is arranged on the top of the top plate, the sealing plate is sleeved on the outside of the hollow shaft, and the edge of the sealing plate is fixed to the inner wall of the cylinder; A partition is fixed to the inner wall of the gas box, an arc-shaped piston block is sleeved inside the gas box, the arc-shaped piston block is located on the top of the partition, a plurality of springs are fixed to the inner side of the arc-shaped piston block away from the inner wall of the cylinder, a mounting plate is fixed to one end of the plurality of springs, a hydraulic cylinder is fixed to the side of the mounting plate away from the spring, the hydraulic cylinder is externally connected to an oil supply device, the outer cylinder of the hydraulic cylinder is fixed inside the gas box, and a plurality of air holes are provided at the connection between the outer cylinder of the hydraulic cylinder and the gas box to avoid negative pressure when the arc-shaped piston block moves; A spring groove is provided at the bottom of the arc-shaped piston block, a plurality of springs 2 are fixed to the inner wall of the spring groove, an arc-shaped baffle is fixed to one end of the plurality of springs 2, and the arc-shaped baffle is sleeved inside the spring groove.

[0009] Furthermore, the ventilation mechanism includes a tube body 1 fixed inside the hollow shaft, the top end of the tube body 1 is rotatably connected to a rotary sealing connector, the rotary sealing connector is connected to a natural gas supply pipeline, the bottom end of the tube body 1 is connected to multiple tube bodies 2, the tube bodies 2 pass through and are fixed inside the hollow shaft, one end of the tube body 2 is connected to a gas diverter, one side of the gas diverter is connected to multiple gas outlet nozzles, the multiple gas outlet nozzles are fixed inside the gas box in an inclined upward direction, and the gas outlet nozzles are located at the bottom of the partition.

[0010] Furthermore, the carbon powder collecting mechanism comprises a bottom plate rotatably connected to the bottom of the cylinder, a plurality of carbon powder outlets 2 corresponding to the carbon powder outlets 1 are provided on the bottom plate, the top of the bottom plate is fixedly connected to a plurality of gas boxes and the carbon powder outlets 2 are connected to the carbon powder outlet 1, a feed pipe is fixed inside the carbon powder outlet 2, and an electric valve is installed inside the feed pipe; A toner box is arranged at the bottom of the bottom plate, a plurality of toner inlets are opened at the top of the toner box, the feed pipe is fixed inside the toner inlet, and a discharge pipe is connected to the bottom of the toner box.

[0011] A carbon negative electrode material production process, which is applicable to the above-mentioned carbon negative electrode material production device, comprises the following steps: Step 1: Purify and pretreat the natural gas to remove sulfur, water and carbon dioxide; Step 2: Passing the treated natural gas into a carbon negative electrode material production device for high temperature reaction to obtain carbon powder and hydrogen; Step 3: Preliminary separation of carbon powder and hydrogen, and discharge of hydrogen; Step 4: Cool down and further filter the exhausted hydrogen.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention realizes the switching of multiple positions by installing a rotating mechanism and a heating mechanism, thereby reducing the temperature recovery time of the heating position and improving the reaction efficiency; 2. The present invention installs a wall-sticking mechanism to discharge gas through the rotating mechanism while scraping off the carbon powder adsorbed on the cylinder wall to avoid the residue of carbon powder, and makes the natural gas fully fit with the heating position by squeezing, thereby improving the reaction rate of natural gas and ensuring the full reaction of natural gas; The present application utilizes an extrusion-wall-adhering method to make the natural gas fully fit with the heating position, so that the natural gas fully reacts, improves the degree of reaction of the natural gas, avoids incomplete reaction of the natural gas, cleans the heating position, avoids residue at the heating position affecting heating, and reduces waste caused by carbon powder residue at the heating position. At the same time, the characteristics of the reactants are utilized to separate the gas from the solid, so as to avoid dust residue inside the pipe when the gas and dust are mixed and discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of a carbon negative electrode material production device proposed in the present invention.

[0014] Figure 2 This is a schematic diagram of the cross-sectional structure of a carbon negative electrode material production device proposed in the present invention.

[0015] Figure 3 for Figure 2 Schematic diagram of the local enlarged structure at point A.

[0016] Figure 4 This is a first-person structural diagram of an explosion inside a cylinder of a carbon negative electrode material production device proposed in the present invention.

[0017] Figure 5 This is a schematic structural diagram from a second perspective of an explosion inside a cylinder of a carbon negative electrode material production device proposed in the present invention.

[0018] Figure 6 This is a schematic diagram of the ventilation mechanism structure of a carbon negative electrode material production device proposed in the present invention.

[0019] In the figure: 1. Heating mechanism; 11. Cylinder; 12. Cavity; 13. Heater; 14. Conical cover plate; 15. Air outlet pipe; 16. Support frame; 2. Rotating mechanism; 21. Hollow shaft; 22. Motor; 23. Gear 2; 24. Gear 1; 25. Connecting rod; 3. Wall-attaching mechanism; 31. Gas box; 32. Partition plate; 33. Hydrogen outlet; 34. Top plate; 35. Carbon powder outlet 1; 36. Hydraulic cylinder; 37. Mounting plate; 38. Spring 1; 39. Arc piston block; 310. Spring groove; 311. Spring 2; 312. Arc baffle; 313. Sealing plate; 4. Ventilation mechanism; 41. Tube body 1; 42. Rotary sealing connector; 43. Tube body 2; 44. Gas diverter; 45. Gas outlet nozzle; 5. Toner collecting mechanism; 51. Bottom plate; 52. Feeding pipe; 53. Toner box; 54. Toner inlet; 55. Feeding pipe. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0023] Example 1: Reference Figure 1-Figure 6 : A carbon negative electrode material production device, comprising a heating mechanism 1, a rotating mechanism 2, a wall-attaching mechanism 3, a ventilation mechanism 4 and a carbon powder collecting mechanism 5; The heating mechanism 1 comprises a cylinder 11, a cylinder wall of the cylinder 11 is provided with a cavity 12, a heater 13 is fixed inside the cavity 12, and the heating mechanism 1 is used for heating the gas for reaction; The rotating mechanism 2 is connected to the heating mechanism 1 and is used to drive the wall-attaching mechanism 3 to rotate and switch positions; The rotating mechanism 2 cooperates with the heating mechanism 1 to realize the switching of multiple positions, reduce the temperature recovery time of the heating position, and improve the reaction efficiency; The wall-adhering mechanism 3 is installed inside the heating mechanism 1 and connected to the rotating mechanism 2, and is used for gas wall-adhering reaction and carbon powder processing; The wall-adhering mechanism 3 discharges gas by rotating the rotating mechanism 2 and scrapes off the carbon powder adsorbed on the cylinder wall to avoid the residue of carbon powder, and makes the natural gas fully adhere to the heating position by squeezing, thereby improving the reaction rate of the natural gas; The ventilation mechanism 4 is connected with the rotating mechanism 2 and the wall-adhering mechanism 3 and is used for introducing natural gas; The carbon powder collecting mechanism 5 is connected to the heating mechanism 1 and the wall-adhering mechanism 3 and is used for collecting carbon powder.

[0024] The heating mechanism 1 further comprises a support frame 16 fixed to the outside of the cylinder 11 , a conical cover plate 14 is fixed to the top of the cylinder 11 , and an air outlet pipe 15 is fixedly passed through the inside of the conical cover plate 14 .

[0025] The rotating mechanism 2 is rotatably connected to the hollow shaft 21 inside the conical cover plate 14, a plurality of connecting rods 25 are fixed to the bottom end of the hollow shaft 21, a gear 1 24 is fixed to the top outer wall of the hollow shaft 21, a gear 2 23 is meshed with one side of the gear 1 24, a motor 22 is fixed to the top of the conical cover plate 14, and the output shaft of the motor 22 is fixedly connected to the gear 2 23.

[0026] The wall-adhering mechanism 3 includes a gas box 31 fixed to one end of the connecting rod 25. A plurality of gas boxes 31 are sleeved inside the cylinder 11, and the opening of the gas box 31 faces the inner wall of the cylinder 11. The opening edge of the gas box 31 is in contact with the inner wall of the cylinder 11. The opening edge of the gas box 31 is in the shape of a blade. A hydrogen outlet 33 is provided at the top of the gas box 31. A filter material is provided inside the hydrogen outlet 33. A carbon powder outlet 35 is provided at the bottom. A top plate 34 is fixed on the top of the multiple gas boxes 31, and the top plate 34 is fixed to the outside of the hollow shaft 21. A sealing plate 313 is arranged on the top of the top plate 34, and the sealing plate 313 is sleeved on the outside of the hollow shaft 21. The edge of the sealing plate 313 is fixed to the inner wall of the cylinder 11; A partition 32 is fixed to the inner wall of the gas box 31, and an arc-shaped piston block 39 is sleeved inside the gas box 31. The arc-shaped piston block 39 is located on the top of the partition 32. A plurality of springs 38 are fixed to the side of the arc-shaped piston block 39 away from the inner wall of the cylinder 11. The springs 38 are made of ceramic material. A mounting plate 37 is fixed to one end of the plurality of springs 38. A hydraulic cylinder 36 is fixed to the side of the mounting plate 37 away from the springs 38. The hydraulic cylinder 36 is externally connected to an oil supply device. The outer cylinder of the hydraulic cylinder 36 is fixed inside the gas box 31. A plurality of air holes are provided at the connection between the outer cylinder of the hydraulic cylinder 36 and the gas box 31 to avoid negative pressure when the arc-shaped piston block 39 moves. A spring groove 310 is provided at the bottom of the arc-shaped piston block 39, and a plurality of springs 311 are fixed to the inner wall of the spring groove 310. The springs 311 are made of ceramic material, and an arc-shaped baffle 312 is fixed at one end of the plurality of springs 311. The arc-shaped baffle 312 is sleeved inside the spring groove 310. The arc-shaped baffle 312 blocks the bottom when the hydraulic cylinder 36 pushes the arc-shaped piston block 39 to squeeze the air, so that the gas moves upward and is discharged.

[0027] The ventilation mechanism 4 includes a tube body 41 fixed inside the hollow shaft 21, the top end of the tube body 41 is rotatably connected to a rotary sealing connector 42, the rotary sealing connector 42 is connected to the natural gas supply pipeline, the bottom end of the tube body 41 is connected to a plurality of tube bodies 43, the tube bodies 43 pass through and are fixed inside the hollow shaft 21, one end of the tube body 43 is connected to a gas diverter 44, one side of the gas diverter 44 is connected to a plurality of gas outlet nozzles 45, the plurality of gas outlet nozzles 45 are fixed inside the gas box 31 in an inclined upward direction, and the gas outlet nozzles 45 are located at the bottom of the partition 32.

[0028] The carbon powder collecting mechanism 5 includes a bottom plate 51 rotatably connected to the bottom of the cylinder 11, and a plurality of carbon powder outlets 2 corresponding to the carbon powder outlets 1 35 are provided on the bottom plate 51. The top of the bottom plate 51 is fixedly connected to the plurality of gas boxes 31, and the carbon powder outlets 2 are connected to the carbon powder outlets 1 35. A feed pipe 52 is fixed inside the carbon powder outlet 2, and an electric valve is installed inside the feed pipe 52. A toner box 53 is disposed at the bottom of the bottom plate 51 , a plurality of toner inlets 54 are provided at the top of the toner box 53 , a feed pipe 52 is fixed inside the toner inlet 54 , and a discharge pipe 55 is connected to the bottom of the toner box 53 .

[0029] Example 2: Reference Figure 2-6 : This embodiment provides a carbon negative electrode material production process based on embodiment 1, which is applicable to the above-mentioned carbon negative electrode material production device, and includes the following steps: Step 1: Purify and pretreat the natural gas to remove sulfur, water and carbon dioxide; Step 2: Passing the treated natural gas into a carbon negative electrode material production device for high temperature reaction to obtain carbon powder and hydrogen; Step 3: Preliminary separation of carbon powder and hydrogen, and discharge of hydrogen; Step 4: Cool down and further filter the exhausted hydrogen.

[0030] Working principle of carbon negative electrode material production device: The heater 13 is started to heat the cylinder 11, and then the natural gas passes into the tube body 1 41 through the rotating sealing connector 42, and then is diverted to the inside of the tube body 2 43, and then is diverted to the inside of multiple gas outlet nozzles 45 through the gas diverter 44. The gas outlet nozzles 45 spray upward into the gas box 31 and contact the inner wall of the cylinder 11. The high-temperature inner wall of the cylinder 11 causes the natural gas to react with high temperature to form carbon powder and hydrogen. The carbon powder is adsorbed on the inner wall of the cylinder 11, and the unreacted natural gas and hydrogen pass through the arc baffle 312 and The gap of the cylinder 11 enters between the arc piston block 39 and the cylinder 11, and the hydrogen outlet 33 is sealed by the sealing plate 313. As the gas increases, the arc piston block 39 will be pushed to move the compression spring 1 38 to expand the space. The arc piston block 39 keeps the gas close to the inner wall of the gas box 31, so that the gas can fully contact with the high temperature position to achieve a full reaction. The density of hydrogen is lower than that of natural gas, so when the natural gas stops being supplied, the reacted hydrogen will rise, and the unreacted natural gas will settle. The starter motor 22 drives the gear 2 23 to rotate. The gear 23 rotates to drive the gear 1 24, the hollow shaft 21, the tube 1 41, the tube 2 43, the connecting rod 25, the gas box 31 and the structure inside the gas box 31 to rotate accordingly, so that the hydrogen outlet 33 rotates to the notch position of the sealing plate 313 to release the seal of the hydrogen outlet 33. After the hydrogen outlet 33 is opened, the arc-shaped piston block 39 will move close to the inner wall of the cylinder 11 due to the thrust of the spring 1 38, squeezing the gas to make it spray out from the hydrogen outlet 33 to the top of the sealing plate 313. Because the hydrogen is located at the top, the squeezing process The hydrogen in the middle will be discharged first, and the natural gas in the lower part will be fully filled between the arc piston block 39 and the cylinder 11 due to the reduction of space after the hydrogen is discharged, so that the natural gas can fully contact and react with the cylinder 11, and then the hydraulic cylinder 36 is started to push the mounting plate 37 and the spring 38 to move the arc piston block 39 to fit the inner wall of the cylinder 11, so that the gas in between can be quickly discharged through the hydrogen outlet 33, and the natural gas can fully contact and react with the heating position in an extrusion manner, so that the natural gas reaction is more complete, and the natural gas reaction efficiency is improved; The gas box 31 rotates while driving the bottom plate 51, the feeding pipe 52 and the toner box 53 to rotate synchronously. At the same time, the edge of the gas box 31 scrapes off the toner on the inner wall of the cylinder 11, and opens the electric valve in the feeding pipe 52. Then, the toner enters the toner box 53 through the toner outlet 1 35, the toner outlet 2 and the feeding pipe 52 for temporary storage. After the hydrogen enters the top of the sealing plate 313, it will leave through the hydrogen outlet 33, and then the gas box 31 will continue to rotate to the next heating position. Because the previous heating position is lowered to a certain temperature by natural gas and requires time to return to temperature, the heating position needs to be replaced to ensure the heating efficiency. If there are four gas boxes 31, the cylinder 11 will have eight heating positions.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A carbon negative electrode material production device, comprising a heating mechanism (1), a rotating mechanism (2), a wall-attaching mechanism (3), a ventilation mechanism (4) and a carbon powder collecting mechanism (5), characterized in that: The heating mechanism (1) comprises a cylinder (11), a cylinder wall of the cylinder (11) is provided with a cavity (12), a heater (13) is fixed inside the cavity (12), and the heating mechanism (1) is used to heat the gas for reaction; The rotating mechanism (2) is connected to the heating mechanism (1) and is used to drive the wall-attaching mechanism (3) to rotate and switch working positions; The wall-adhering mechanism (3) is installed inside the heating mechanism (1) and connected to the rotating mechanism (2), and is used for gas wall-adhering reaction and carbon powder processing; The ventilation mechanism (4) is connected to the rotating mechanism (2) and the wall-adhering mechanism (3) and is used to introduce natural gas; The carbon powder collecting mechanism (5) is connected to the heating mechanism (1) and the wall-adhering mechanism (3) and is used for collecting carbon powder.

2. A carbon negative electrode material production device according to claim 1, characterized in that: The heating mechanism (1) further comprises a support frame (16) fixed to the outside of the cylinder (11); a conical cover plate (14) is fixed to the top of the cylinder (11); and an air outlet pipe (15) is fixedly passed through the interior of the conical cover plate (14).

3. A carbon negative electrode material production device according to claim 2, characterized in that: The rotating mechanism (2) is rotatably connected to a hollow shaft (21) inside the conical cover plate (14); a plurality of connecting rods (25) are fixed to the bottom end of the hollow shaft (21); a gear 1 (24) is fixed to the top outer wall of the hollow shaft (21); a gear 2 (23) is meshed with one side of the gear 1 (24); a motor (22) is fixed to the top of the conical cover plate (14); and an output shaft of the motor (22) is fixedly connected to the gear 2 (23).

4. A carbon negative electrode material production device according to claim 3, characterized in that: The wall-adhering mechanism (3) comprises a gas box (31) fixed to one end of the connecting rod (25), a plurality of the gas boxes (31) are sleeved inside the cylinder (11), and the opening of the gas box (31) faces the inner wall of the cylinder (11), the opening edge of the gas box (31) is in contact with the inner wall of the cylinder (11), the opening edge of the gas box (31) is in the shape of a knife edge, a hydrogen outlet (33) is provided at the top of the gas box (31), a filter material is provided inside the hydrogen outlet (33), and a carbon powder outlet (35) is provided at the bottom; A top plate (34) is fixed on the top of the plurality of gas boxes (31), the top plate (34) is fixed on the outside of the hollow shaft (21), a sealing plate (313) is provided on the top of the top plate (34), the sealing plate (313) is sleeved on the outside of the hollow shaft (21), and the edge of the sealing plate (313) is fixed to the inner wall of the cylinder (11); A partition (32) is fixed to the inner wall of the gas box (31), an arc-shaped piston block (39) is sleeved inside the gas box (31), the arc-shaped piston block (39) is located on the top of the partition (32), a plurality of springs (38) are fixed to the side of the arc-shaped piston block (39) away from the inner wall of the cylinder (11), a mounting plate (37) is fixed to one end of the plurality of springs (38), a hydraulic cylinder (36) is fixed to the side of the mounting plate (37) away from the springs (38), the hydraulic cylinder (36) is externally connected to an oil supply device, the outer cylinder of the hydraulic cylinder (36) is fixed inside the gas box (31), and a plurality of air holes are provided at the connection between the outer cylinder of the hydraulic cylinder (36) and the gas box (31) to avoid negative pressure when the arc-shaped piston block (39) moves; A spring groove (310) is provided at the bottom of the arc-shaped piston block (39), a plurality of springs (311) are fixed to the inner wall of the spring groove (310), an arc-shaped baffle (312) is fixed to one end of the plurality of springs (311), and the arc-shaped baffle (312) is sleeved inside the spring groove (310).

5. A carbon negative electrode material production device according to claim 4, characterized in that: The ventilation mechanism (4) comprises a tube body 1 (41) fixed inside the hollow shaft (21); the top end of the tube body 1 (41) is rotatably connected to a rotary sealing connector (42); the rotary sealing connector (42) is connected to a natural gas supply pipeline; the bottom end of the tube body 1 (41) is connected to a plurality of tube bodies 2 (43); the tube bodies 2 (43) penetrate and are fixed inside the hollow shaft (21); one end of the tube bodies 2 (43) is connected to a gas diverter (44); one side of the gas diverter (44) is connected to a plurality of gas outlet nozzles (45); the plurality of gas outlet nozzles (45) are fixed inside the gas box (31) in an inclined upward direction; the gas outlet nozzles (45) are located at the bottom of the partition (32).

6. A carbon negative electrode material production device according to claim 5, characterized in that: The carbon powder collecting mechanism (5) comprises a bottom plate (51) rotatably connected to the bottom of the cylinder (11), the bottom plate (51) being provided with a plurality of carbon powder outlets 2 corresponding to the carbon powder outlets 1 (35), the top of the bottom plate (51) being fixedly connected to a plurality of gas boxes (31) and the carbon powder outlets 2 being connected to the carbon powder outlets 1 (35), a feed pipe (52) being fixedly provided inside the carbon powder outlets 2, and an electric valve being installed inside the feed pipe (52); A toner box (53) is provided at the bottom of the bottom plate (51), a plurality of toner inlets (54) are provided at the top of the toner box (53), the feed pipe (52) is fixed inside the toner inlet (54), and a discharge pipe (55) is connected to the bottom of the toner box (53).

7. A carbon negative electrode material production process, which is applicable to a carbon negative electrode material production device according to claim 6, characterized in that: The following steps are involved: Step 1: Purify and pretreat the natural gas to remove sulfur, water and carbon dioxide; ‌ Step 2: Passing the treated natural gas into a carbon negative electrode material production device for high temperature reaction to obtain carbon powder and hydrogen; Step 3: Preliminary separation of carbon powder and hydrogen, and discharge of hydrogen; Step 4: Cool down and further filter the exhausted hydrogen.

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