Device for recovering waste gas in carbon material production

Abstract

The utility model discloses a device for recovering waste gas in carbon material production, which belongs to the technical field of waste gas recovery, and comprises a rack, a gas filtering mechanism, an oxygen removal mechanism, a water removal mechanism, a methane separation mechanism and a hydrogen collection mechanism, the oxygen removal mechanism is arranged on the right side of the gas filtering mechanism, the water removal mechanism is arranged on the right side of the oxygen removal mechanism, the methane separation mechanism is arranged on the right side of the water removal mechanism, and the hydrogen collection mechanism is arranged on the right side of the methane separation mechanism; the gas filtering mechanism comprises a buffer tank, limiting rings, a circular base, a first extension rod, a vertical guide wheel, a sealing cover and a filter element, the buffer tank is fixedly mounted on the upper side of the rack, and the two limiting rings are fixedly mounted in the buffer tank. By means of the mode, dust attached to the filter element and dust on the inner wall of the tank body can be cleaned under the condition that equipment is not disassembled.

Description

Technical Field

[0001] This utility model relates to the field of waste gas recovery technology, specifically a device for waste gas recovery in carbon material production. Background Technology

[0002] In the production of carbon materials, the high-temperature chemical vapor deposition (CVD) process generates a large amount of waste gas, mainly composed of methane (CH4), hydrogen (H2), oxygen (O2), and moisture. Direct emission of waste gas will cause air pollution, and recycling the waste gas can save a lot of costs. When recycling waste gas, it is usually necessary to filter the dust and other impurities in the waste gas first. After filtering the dust from the gas, a large amount of dust and impurities will adhere to the surface of the filter element, affecting the gas output of the filter element. Therefore, the equipment needs to be disassembled frequently for cleaning or replacement of the filter element.

[0003] Chinese patent CN220696332U discloses a waste gas and waste material recovery device for the production of silicon carbide refractory materials. The device includes a fixed frame, a conveyor belt for transporting waste material, and a waste gas pipe for transporting waste gas fitted at the bottom of the fixed frame. Evenly distributed bases are fixedly installed at the four corners of the bottom surface of the fixed frame. A support frame is fixedly installed above the fixed frame, and a conveying pump is fixedly installed on the support frame. A spray head connected to the conveying pump is installed in the support frame. A cooling chamber and a waste gas purification chamber are fixedly installed on the bottom surface of the fixed frame. The cooling chamber is connected to the inner side of the fixed frame via an inlet. The waste gas pipe passes through the inner side of the cooling chamber and connects to the waste gas purification chamber. A drain valve is installed at the bottom of the cooling chamber. The waste gas purification chamber stores an alkaline solution for removing harmful gases. Two sets of symmetrically distributed conveying rollers are movably fitted in the fixed frame, and a drive motor fixedly connected to a section of the conveying rollers is fixedly installed on the outside of the fixed frame.

[0004] However, the technical solution of this patent has the following problems:

[0005] This patent does not allow for the cleaning of dust adhering to the filter element and dust on the inner wall of the tank without disassembling the equipment.

[0006] Therefore, those skilled in the art have provided an apparatus for recovering waste gas in the production of carbon materials to solve the above-mentioned problems. Utility Model Content

[0007] The purpose of this invention is to provide a device for waste gas recovery in carbon material production, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] An apparatus for waste gas recovery in carbon material production includes a frame and further comprises: a gas filtration mechanism, an oxygen removal mechanism, a water removal mechanism, a methane separation mechanism, and a hydrogen collection mechanism. The gas filtration mechanism is mounted on the frame. The oxygen removal mechanism is located to the right of the gas filtration mechanism, the water removal mechanism is located to the right of the oxygen removal mechanism, the methane separation mechanism is located to the right of the water removal mechanism, and the hydrogen collection mechanism is located to the right of the methane separation mechanism. The gas filtration mechanism includes: a buffer tank, limiting rings, a circular base, a first extension rod, a vertical guide wheel, a sealing cover, and a filter element. The buffer tank is fixedly mounted on the upper side of the frame, two limiting rings are fixedly mounted inside the buffer tank, and the circular base is located inside the buffer tank. Multiple first extension rods are fixedly installed on the outer circular sidewall of the circular base. The vertical guide wheel is rotatably connected to the end of the first extension rod away from the circular base via a rotating shaft. The vertical guide wheel is positioned between two limiting rings. The sealing cover is fixedly installed on the upper side of the buffer tank. The filter element is fixedly installed on the upper side of the circular base. An air inlet is fixedly installed on the left side of the buffer tank. An air outlet is fixedly installed on the right side of the buffer tank. An impurity discharge outlet is fixedly installed on the lower side of the buffer tank. A flexible hose is fixedly installed at the lower air outlet end of the filter element. The end of the flexible hose away from the filter element is fixedly connected to the air outlet. A gas compressor is fixedly installed on the right side of the frame. The end of the air outlet away from the flexible hose is fixedly connected to the input end of the gas compressor.

[0010] Furthermore, the gas filtration mechanism also includes an intermittent drive assembly, which is mounted on a first extension rod. The intermittent drive assembly includes a permanent magnet, an electromagnet, and a tension spring. The permanent magnet is fixedly mounted on the first extension rod at the front of the circular base. The electromagnet is located to the right of the permanent magnet and is fixedly mounted on the upper side of the limiting ring via a bracket. One end of each of the multiple tension springs is fixedly connected to the limiting ring, and the other end of each tension spring is fixedly connected to the first extension rod.

[0011] Furthermore, the gas filtration mechanism also includes a sidewall cleaning assembly, which is installed on the upper side of the buffer tank. The sidewall cleaning assembly includes an arc-shaped plate, a drive motor, a vertical plate, a first rotating plate, a second rotating plate, a first magnet, and a second magnet. The arc-shaped plate is rotatably connected to the lower side of the sealing cover via a rotating shaft. The drive motor is fixedly installed on the upper side of the sealing cover, and the output shaft of the drive motor is fixedly connected to the rotating shaft of the arc-shaped plate. The two vertical plates are fixedly installed on the left and right sides of the arc-shaped plate. One end of each of the two first rotating plates is hinged to the vertical plate. The second rotating plate is rotatably connected to the end of the first rotating plate away from the vertical plate via a rotating shaft. The first magnet is fixedly installed on the vertical plate, and the second magnet is fixedly installed on the second rotating plate. The first magnet and the second magnet repel each other. A scraper is fixedly installed on the second rotating plate for scraping dust off the inner wall of the buffer tank.

[0012] Furthermore, the gas filtration mechanism also includes a horizontal limiting component, which is mounted on a circular base. The horizontal limiting component includes a second extension rod and a horizontal guide wheel. A plurality of second extension rods are fixedly mounted on the outer circumferential sidewall of the circular base. The horizontal guide wheel is rotatably connected to the end of the second extension rod away from the circular base via a rotating shaft. The horizontal guide wheel is disposed between two limiting rings, and the outer ring of the horizontal guide wheel is disposed on the inner sidewall of the buffer tank.

[0013] Furthermore, the deoxygenation mechanism includes: a deoxygenator, which is located on the right side of the gas filtration mechanism. The input end of the deoxygenator is fixedly connected to the output end of the gas compressor. The deoxygenator can be a vacuum deoxygenator manufactured by Yuanyang Power Auxiliary Machinery Co., Ltd.

[0014] Furthermore, the dehydration mechanism includes a molecular sieve dehydration device, which is located on the right side of the deaerator. The input end of the molecular sieve dehydration device is fixedly connected to the deoxygenated oxygen output end. The molecular sieve dehydration device can be a Cutter Process Solutions molecular sieve dehydration device manufactured by HC Petroleum Equipment.

[0015] Furthermore, the methane separation mechanism includes: a separation tank, a heat exchanger, and a gas-liquid separator. The separation tank is located on the right side of the molecular sieve dehydration device. The heat exchanger is fixedly installed inside the separation tank. The gas-liquid separator is fixedly installed inside the separation tank. The input end of the heat exchanger is fixedly connected to the output end of the molecular sieve dehydration device. The input end of the gas-liquid separator is fixedly connected to the output end of the heat exchanger. The separation tank consists of two layers, inner and outer, with a vacuum in the middle to block heat conduction and improve insulation.

[0016] Furthermore, the hydrogen collection mechanism includes a hydrogen purifier, which is located on the right side of the separation tank. The input end of the hydrogen purifier is fixedly connected to the output end of the gas-liquid separator. The hydrogen purifier can be a palladium tube type hydrogen purifier manufactured by Chengdu Guixin Technology Co., Ltd.

[0017] Compared with the prior art, the beneficial effects of this utility model are: 1. When too much dust and impurities adhere to the outer wall of the filter element, the electromagnet of the intermittent drive component is activated. The electromagnet and the permanent magnet repel each other, causing the permanent magnet to move. The movement of the permanent magnet drives the first extension rod to move. The movement of the first extension rod drives the vertical guide wheel to rotate between the two limit rings, reducing the friction when the circular base rotates. The movement of the first extension rod drives the circular base to rotate. The rotation of the circular base causes the tension springs on the other first extension rods to undergo elastic deformation. The electromagnet is turned off, and the elastically deformed tension springs return to their original position, pulling the circular base back to its initial position. By intermittently starting and stopping the electromagnet, the circular base rotates repeatedly, which is beneficial for shaking off the dust on the outer wall of the filter element of the circular base without disassembling the equipment.

[0018] 2. The rotation of the drive motor output of the side wall cleaning component drives the arc plate to rotate, which in turn drives the vertical plate to rotate. The vertical plate then drives the two first rotating plates to rotate, which in turn drives the second rotating plate to rotate. The first and second magnets repel each other, ensuring that the second rotating plate remains in close contact with the inner wall of the buffer tank. The scraper on the second rotating plate is also in close contact with the inner wall of the buffer tank. The rotation of the second rotating plate drives the scraper to rotate, which facilitates the cleaning of dust adhering to the inner wall of the buffer tank without disassembling the equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a front view of the present utility model;

[0021] Figure 3 This is a top view of the present invention;

[0022] Figure 4 For along Figure 3 Sectional view along the AA direction;

[0023] Figure 5 for Figure 4 Enlarged view of A in the middle;

[0024] Figure 6 A schematic diagram of the gas filtration mechanism of this utility model with some parts removed. Figure 1 ;

[0025] Figure 7 A schematic diagram of the gas filtration mechanism of this utility model with some parts removed. Figure 2 ;

[0026] Figure 8 This is a flowchart of the waste gas recovery process.

[0027] In the diagram: 1. Frame; 2. Gas filtration mechanism; 21. Buffer tank; 22. Limiting ring; 23. Circular base; 24. First extension rod; 25. Vertical guide wheel; 26. Sealing cover; 27. Filter element; 28. Air inlet; 29. ​​Air outlet; 210. Impurity discharge outlet; 211. Hose; 212. Gas compressor; 213. Permanent magnet; 214. Electromagnet; 215. Tension spring; 216. Arc plate; 217. Drive motor; 218. 8. Vertical plate; 219. First rotating plate; 220. Second rotating plate; 221. First magnet; 222. Second magnet; 223. Scraper; 224. Second extension rod; 225. Horizontal guide wheel; 3. Deoxygenation mechanism; 31. Deaerator; 4. Dehydration mechanism; 41. Molecular sieve dehydration device; 5. Methane separation mechanism; 51. Separation tank; 52. Heat exchanger; 53. Gas-liquid separator; 6. Hydrogen collection mechanism; 61. Hydrogen purifier. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0030] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-8A device for waste gas recovery in carbon material production includes a frame 1, and further includes: a gas filtration mechanism 2, an oxygen removal mechanism 3, a water removal mechanism 4, a methane separation mechanism 5, and a hydrogen collection mechanism 6. The gas filtration mechanism 2 is mounted on the frame 1. The oxygen removal mechanism 3 is located to the right of the gas filtration mechanism 2, the water removal mechanism 4 is located to the right of the oxygen removal mechanism 3, the methane separation mechanism 5 is located to the right of the water removal mechanism 4, and the hydrogen collection mechanism 6 is located to the right of the methane separation mechanism 5. The gas filtration mechanism 2 includes: a buffer tank 21, a limiting ring 22, a circular base 23, a first extension rod 24, a vertical guide wheel 25, a sealing cover 26, and a filter element 27. The buffer tank 21 is fixedly mounted on the upper side of the frame 1. Two limiting rings 22 are fixedly mounted inside the buffer tank 21. The circular base 23 is located inside the buffer tank 21. Multiple first extension rods 24 are also included. Rod 24 is fixedly installed on the outer side wall of circular base 23. Vertical guide wheel 25 is rotatably connected to the end of first extension rod 24 away from circular base 23 via a rotating shaft. Vertical guide wheel 25 is disposed between two limiting rings 22. Sealing cover 26 is fixedly installed on the upper side of buffer tank 21. Filter element 27 is fixedly installed on the upper side of circular base 23. Air inlet 28 is fixedly installed on the left side of buffer tank 21. Air outlet 29 is fixedly installed on the right side of buffer tank 21. Impurity discharge outlet 210 is fixedly installed on the lower side of buffer tank 21. Hose 211 is fixedly installed on the lower air outlet end of filter element 27. The end of hose 211 away from filter element 27 is fixedly connected to air outlet 29. Gas compressor 212 is fixedly installed on the right side of frame 1. The end of air outlet 29 away from hose 211 is fixedly connected to the input end of gas compressor 212.

[0031] After the waste gas is recovered, dust and oil mist are first removed by the gas filtration unit 2. The filtered gas is then pressurized by the gas compressor 212. The compressor exhaust temperature is about 50°C. The gas enters the deoxygenation unit 3, which catalyzes oxygen into water. The methane separation unit 5 separates methane and hydrogen. The hydrogen collection unit 6 purifies and collects the hydrogen.

[0032] After the waste gas is recovered, it enters the buffer tank 21 through the air inlet 28 of the buffer tank 21 of the gas filtration mechanism 2. The gas is filtered by the filter element 27. Dust and other impurities mixed in the gas adhere to the outside of the filter element 27 and the inner wall of the buffer tank 21. The filtered gas enters the hose 211 through the lower outlet of the filter element 27. The gas enters the gas compressor 212 through the hose 211 and is compressed.

[0033] The gas filtration mechanism 2 further includes an intermittent drive assembly, which is mounted on the first extension rod 24. The intermittent drive assembly includes a permanent magnet 213, an electromagnet 214, and a tension spring 215. The permanent magnet 213 is fixedly mounted on the first extension rod 24 on the front side of the circular base 23. The electromagnet 214 is located on the right side of the permanent magnet 213 and is fixedly mounted on the upper side of the limiting ring 22 by a bracket. One end of each of the tension springs 215 is fixedly connected to the limiting ring 22, and the other end of each tension spring 215 is fixedly connected to the first extension rod 24.

[0034] When excessive dust and impurities adhere to the outer wall of the filter element 27, the electromagnet 214 of the intermittent drive assembly is activated. The electromagnet 214 and the permanent magnet 213 repel each other, causing the permanent magnet 213 to move. The movement of the permanent magnet 213 drives the first extension rod 24 to move. The movement of the first extension rod 24 causes the vertical guide wheel 25 to rotate between the two limit rings 22, reducing the friction when the circular base 23 rotates. The movement of the first extension rod 24 causes the circular base 23 to rotate. The rotation of the circular base 23 causes the tension springs 215 on the other first extension rods 24 to undergo elastic deformation. The electromagnet 214 is turned off, and the elastically deformed tension springs 215 return to their original positions, pulling the circular base 23 back to its initial position. Through the intermittent activation and deactivation of the electromagnet 214, the circular base 23 rotates repeatedly, shaking off the dust and impurities on the outer wall of the filter element 27 and discharging them from the impurity discharge port 210 on the lower side of the buffer tank 21. This helps to shake off the dust from the outer wall of the filter element 27.

[0035] Example 2: In some embodiments, such as Figures 1-8 In a preferred embodiment of this utility model, the gas filtration mechanism 2 further includes a sidewall cleaning assembly, which is installed on the upper side of the buffer tank 21. The sidewall cleaning assembly includes an arc-shaped plate 216, a drive motor 217, a vertical plate 218, a first rotating plate 219, a second rotating plate 220, a first magnet 221, and a second magnet 222. The arc-shaped plate 216 is rotatably connected to the lower side of the sealing cover 26 via a rotating shaft. The drive motor 217 is fixedly installed on the upper side of the sealing cover 26, and the output shaft of the drive motor 217 is fixedly connected to... The two vertical plates 218 are fixedly installed on the left and right sides of the arc plate 216, connected to the rotating shaft of the arc plate 216. One end of the two first rotating plates 219 is hinged to the vertical plates 218. The second rotating plate 220 is rotatably connected to the end of the first rotating plate 219 away from the vertical plates 218 through the rotating shaft. The first magnet 221 is fixedly installed on the vertical plate 218, and the second magnet 222 is fixedly installed on the second rotating plate 220. A scraper 223 is fixedly installed on the second rotating plate 220 for scraping dust off the inner wall of the buffer tank 21.

[0036] The drive motor 217 of the side wall cleaning component rotates, causing the arc plate 216 to rotate. The rotation of the arc plate 216 causes the vertical plate 218 to rotate. The rotation of the vertical plate 218 causes the two first rotating plates 219 to rotate. The rotation of the first rotating plates 219 causes the second rotating plate 220 to rotate. The first magnet 221 and the second magnet 222 repel each other, so that the second rotating plate 220 is always in close contact with the inner wall of the buffer tank 21. The scraper 223 on the second rotating plate 220 is in close contact with the inner wall of the buffer tank 21. The rotation of the second rotating plate 220 causes the scraper 223 to rotate, scraping off the dust and impurities on the inner wall of the buffer tank and discharging them from the impurity discharge port 210 on the lower side of the buffer tank 21, which is beneficial for cleaning the dust attached to the inner wall of the buffer tank 21.

[0037] The gas filtration mechanism 2 further includes a horizontal limiting component, which is mounted on a circular base 23. The horizontal limiting component includes a second extension rod 224 and a horizontal guide wheel 225. A plurality of second extension rods 224 are fixedly mounted on the outer side wall of the circular base 23. The horizontal guide wheel 225 is rotatably connected to one end of the second extension rod 224 away from the circular base 23 via a rotating shaft. The horizontal guide wheel 225 is disposed between two limiting rings 22, and the outer ring of the horizontal guide wheel 225 is disposed on the inner side wall of the buffer tank 21.

[0038] The rotation of the circular base 23 drives the second extension rod 224 to rotate, and the rotation of the second extension rod 224 drives the horizontal guide wheel 225 to rotate. The rotation of the horizontal guide wheel 225 ensures that the circular base 23 is always within the preset range on the side of the buffer tank 21, which helps to maintain the stability of the rotation of the circular base 23 and the filter element 27.

[0039] The deoxygenation mechanism 3 includes a deoxygenator 31, which is located on the right side of the gas filtration mechanism 2. The input end of the deoxygenator 31 is fixedly connected to the output end of the gas compressor 212. The deoxygenator 31 can be a vacuum deoxygenator manufactured by Yuanyang Power Auxiliary Machinery Co., Ltd. The deoxygenator 31 removes oxygen from the gas.

[0040] The dehydration mechanism 4 includes a molecular sieve dehydration device 41, which is located on the right side of the deaerator 31. The input end of the molecular sieve dehydration device 41 is fixedly connected to the deoxygenated gas output end. The molecular sieve dehydration device 41 can be a Cutter Process Solutions molecular sieve dehydration device manufactured by HC Petroleum Equipment. The molecular sieve dehydration device 41 removes moisture from the gas.

[0041] The methane separation mechanism 5 includes: a separation tank 51, a heat exchanger 52, and a gas-liquid separator 53. The separation tank 51 is located on the right side of the molecular sieve dehydration device 41. The heat exchanger 52 is fixedly installed inside the separation tank 51, and the gas-liquid separator 53 is fixedly installed inside the separation tank 51. The input end of the heat exchanger 52 is fixedly connected to the output end of the molecular sieve dehydration device 41, and the input end of the gas-liquid separator 53 is fixedly connected to the output end of the heat exchanger 52. The separation tank 51 consists of two layers, inner and outer, with a high vacuum in the middle to block heat conduction. The heat exchanger 52 can be a single or double metal rolled heat exchange tube manufactured by Wuxi Mingjia Heat Exchange Technology Co., Ltd., and the gas-liquid separator 53 can be a GLS-1000 model gas-liquid separator manufactured by Jiangsu Chuanjie Machinery Equipment Co., Ltd.

[0042] The separation tank 51 of the methane separation unit 5 is filled with liquid nitrogen as a cold source. After the gas is dried and dehydrated, it enters the heat exchanger 52. After being cooled by liquid nitrogen, the gas in the heat exchanger 52 is cooled to -154 degrees Celsius, which liquefies the methane in the gas. Since the boiling points of methane and hydrogen are quite different, the gas side enters the gas-liquid separator 53. The liquid methane is output through the gas-liquid separator 53 for secondary use. The hydrogen enters the hydrogen collection unit 6, where it is cooled by liquid nitrogen to preferentially liquefy the methane and reduce hydrogen loss.

[0043] The hydrogen collection mechanism 6 includes a hydrogen purifier 61, which is located on the right side of the separator 51. The input end of the hydrogen purifier 61 is fixedly connected to the output end of the gas-liquid separator 53. The hydrogen purifier 61 can be a palladium tube type hydrogen purifier produced by Chengdu Guixin Technology Co., Ltd.

[0044] Hydrogen enters the hydrogen purifier 61 of the hydrogen collection mechanism 6, where it is purified and used as a product gas.

[0045] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for waste gas recovery in carbon material production, comprising a frame (1), characterized in that, Also includes: The system comprises a gas filtration mechanism (2), an oxygen removal mechanism (3), a water removal mechanism (4), a methane separation mechanism (5), and a hydrogen collection mechanism (6). The gas filtration mechanism (2) is mounted on a frame (1). The oxygen removal mechanism (3) is located to the right of the gas filtration mechanism (2). The water removal mechanism (4) is located to the right of the oxygen removal mechanism (3). The methane separation mechanism (5) is located to the right of the water removal mechanism (4). The hydrogen collection mechanism (6) is located to the right of the methane separation mechanism (5). The system includes: a buffer tank (21), limiting rings (22), a circular base (23), first extension rods (24), vertical guide wheels (25), a sealing cap (26), and a filter element (27). The buffer tank (21) is fixedly installed on the upper side of the frame (1). Two limiting rings (22) are fixedly installed inside the buffer tank (21). The circular base (23) is located inside the buffer tank (21). Multiple first extension rods (24) are fixedly installed on the outer sidewall of the circular base (23). The vertical guide wheels (25) pass through... The rotating shaft is rotatably connected to the end of the first extension rod (24) away from the circular base (23). The vertical guide wheel (25) is set between two limiting rings (22). The sealing cover (26) is fixedly installed on the upper side of the buffer tank (21). The filter element (27) is fixedly installed on the upper side of the circular base (23). An air inlet (28) is fixedly installed on the left side of the buffer tank (21). An air outlet (29) is fixedly installed on the right side of the buffer tank (21). An impurity discharge outlet (29) is fixedly installed on the lower side of the buffer tank (21). 10) A hose (211) is fixedly installed at the lower air outlet end of the filter element (27). The end of the hose (211) away from the filter element (27) is fixedly connected to the air outlet (29). A gas compressor (212) is fixedly installed on the right side of the frame (1). The end of the air outlet (29) away from the hose (211) is fixedly connected to the input end of the gas compressor (212). The gas filtration mechanism (2) further includes: an intermittent drive assembly, which is installed on the first extension rod (24).

2. The apparatus for waste gas recovery in carbon material production according to claim 1, characterized in that, The intermittent drive assembly includes a permanent magnet (213), an electromagnet (214), and a tension spring (215). The permanent magnet (213) is fixedly mounted on the first extension rod (24) on the front side of the circular base (23). The electromagnet (214) is located on the right side of the permanent magnet (213). The electromagnet (214) is fixedly mounted on the upper side of the limiting ring (22) by a bracket. One end of each of the tension springs (215) is fixedly connected to the limiting ring (22), and the other end of each tension spring (215) is fixedly connected to the first extension rod (24).

3. The apparatus for waste gas recovery in carbon material production according to claim 2, characterized in that, The gas filtration mechanism (2) further includes a sidewall cleaning assembly, which is installed on the upper side of the buffer tank (21). The sidewall cleaning assembly includes an arc-shaped plate (216), a drive motor (217), a vertical plate (218), a first rotating plate (219), a second rotating plate (220), a first magnet (221), and a second magnet (222). The arc-shaped plate (216) is rotatably connected to the lower side of the sealing cover (26) via a rotating shaft. The drive motor (217) is fixedly installed on the upper side of the sealing cover (26), and the output shaft of the drive motor (217) is fixedly connected to the rotating shaft of the arc-shaped plate (216). Two vertical plates (218) are fixedly installed on the left and right sides of the arc plate (216). One end of the two first rotating plates (219) is hinged to the vertical plate (218). The second rotating plate (220) is rotatably connected to the end of the first rotating plate (219) away from the vertical plate (218) through a rotating shaft. The first magnet (221) is fixedly installed on the vertical plate (218). The second magnet (222) is fixedly installed on the second rotating plate (220). The first magnet (221) and the second magnet (222) repel each other. A scraper (223) is fixedly installed on the second rotating plate (220).

4. The apparatus for waste gas recovery in carbon material production according to claim 3, characterized in that, The gas filtration mechanism (2) further includes a horizontal limiting component, which is mounted on a circular base (23).

5. The apparatus for waste gas recovery in carbon material production according to claim 4, characterized in that, The deoxygenation mechanism (3) includes a deoxygenator (31), which is located on the right side of the gas filtration mechanism (2). The input end of the deoxygenator (31) is fixedly connected to the output end of the gas compressor (212).

6. The apparatus for waste gas recovery in carbon material production according to claim 5, characterized in that, The dewatering mechanism (4) includes a molecular sieve dewatering device (41), which is located on the right side of the deaerator (31), and the input end of the molecular sieve dewatering device (41) is fixedly connected to the deoxygenated oxygen output end.

7. The apparatus for waste gas recovery in carbon material production according to claim 6, characterized in that, The methane separation mechanism (5) includes: a separation tank (51), a heat exchanger (52), and a gas-liquid separator (53). The separation tank (51) is located on the right side of the molecular sieve dehydration device (41). The heat exchanger (52) is fixedly installed inside the separation tank (51). The gas-liquid separator (53) is fixedly installed inside the separation tank (51). The input end of the heat exchanger (52) is fixedly connected to the output end of the molecular sieve dehydration device (41). The input end of the gas-liquid separator (53) is fixedly connected to the output end of the heat exchanger (52). The separation tank (51) consists of two layers, inner and outer, with a vacuum in the middle.

8. The apparatus for waste gas recovery in carbon material production according to claim 7, characterized in that, The hydrogen collection mechanism (6) includes a hydrogen purifier (61), which is located on the right side of the separator (51), and the input end of the hydrogen purifier (61) is fixedly connected to the output end of the gas-liquid separator (53).

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