A desulfurization treatment device for a lithium battery negative electrode graphite material

Abstract

The present application relates to the technical field of desulfurization treatment device, and disclose a kind of lithium battery negative graphite material's desulfurization treatment device, the problem of insufficient desulfurization of existing desulfurization treatment device is solved, it includes graphitization furnace, bag-type dust collector, pressurizing pump, gas guide pipe, desulfurization tower and controller, gas guide pipe is connected between graphitization furnace and desulfurization tower, bag-type dust collector and pressurizing pump are all connected on gas guide pipe, desulfurization tower is by tower body, gas-liquid premixing desulfurization mechanism, conducting mechanism, several spray desulfurizers, liquid inlet pipe, circulating pump one, liquid suction pipe one, blow-off pipe and exhaust port are constituted, gas-liquid premixing desulfurization mechanism is connected to the bottom end inside tower body, conducting mechanism is connected to the intermediate position inside tower body, spray desulfurizer is connected to the top end inside tower body, liquid suction pipe one is connected to one side of tower body, liquid inlet pipe is connected to the top end of one side of liquid suction pipe one;The sufficiency of desulfurization can be improved by the desulfurization treatment device, to avoid air pollution.

Description

Technical Field

[0001] This invention belongs to the technical field of desulfurization treatment devices, specifically a desulfurization treatment device for graphite materials used in lithium battery negative electrodes. Background Technology

[0002] With the widespread application of lithium-ion batteries in electric vehicles and energy storage, the lithium battery industry continues to develop rapidly, which puts forward higher requirements for the graphitization of anode materials. The main graphitization equipment for lithium-ion battery graphite anode materials on the market includes Aisson graphitization furnace and series graphitization furnace.

[0003] When lithium battery anode graphite materials undergo high-temperature graphitization, a large amount of sulfur-containing gas is generated. Currently, the sulfur-containing gas generated during the graphitization process of lithium battery anode graphite materials is usually treated by a desulfurization tower. However, the currently used wet desulfurization towers only achieve desulfurization through spraying. The sprayed reaction liquid is difficult to fully contact with the sulfur-containing flue gas, which can easily lead to insufficient desulfurization. The discharge of sulfur-containing gas will seriously affect the environment. Therefore, this application proposes a desulfurization treatment device for lithium battery anode graphite materials. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a desulfurization treatment device for graphite materials of lithium battery negative electrode, which effectively solves the problem of insufficient desulfurization in existing desulfurization treatment devices.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a desulfurization treatment device for graphite materials used in lithium-ion battery anodes, comprising a graphitization furnace, a bag filter, a pressurizing pump, a gas duct, a desulfurization tower, and a controller. The gas duct is connected between the graphitization furnace and the desulfurization tower. The bag filter and the pressurizing pump are both connected to the gas duct. The desulfurization tower is electrically connected to the controller. The desulfurization tower consists of a tower body, a gas-liquid premixing desulfurization mechanism, a conductive mechanism, several spray desulfurizers, a liquid inlet pipe, a circulating pump, a liquid extraction pipe, a sewage discharge pipe, and a discharge pipe. The tower consists of a gas inlet, a gas-liquid premixed desulfurization mechanism connected to the bottom of the tower body and connected to the gas guide pipe, a conductive mechanism connected to the middle of the tower body and connected in conjunction with the gas-liquid premixed desulfurization mechanism, a spray desulfurizer fixedly connected to the top of the tower body, a liquid extraction pipe connected to one side of the tower body and fixedly connected to the spray desulfurizer, a liquid inlet pipe connected to the top of one side of the liquid extraction pipe, a circulating pump connected to the liquid extraction pipe, a sewage discharge pipe fixedly connected to one side of the bottom of the tower body, and an exhaust port fixedly connected to the top of the tower body.

[0006] Preferably, the gas-liquid premixed desulfurization mechanism comprises a central support body, a gas-liquid premixer, a rotary drive assembly, a flow divider assembly, a flow guide sleeve, an arc-shaped honeycomb flow divider plate, and a reaction liquid replacement assembly. The central support body is fixedly connected to the middle position of the bottom end inside the tower body. The gas guide pipe passes through the central support body and is connected to it through several O-ring seals. The gas-liquid premixer is sleeved on the central support body and is rotatably connected to it through a bearing. The rotary drive assembly is connected between the central support body and the gas-liquid premixer. The flow divider assembly is connected to the bottom end of the outer surface of the gas-liquid premixer. The flow guide sleeve is fixedly connected to the bottom end of the inner surface of the tower body. The reaction liquid replacement assembly is fixedly connected to the top end of the gas-liquid premixer. The arc-shaped honeycomb flow divider plate is fixedly connected to the outer surface of the reaction liquid replacement assembly and matches the arc-shaped honeycomb flow divider plate.

[0007] Preferably, the gas-liquid premixer is composed of an outer shell, an inner shell, and a honeycomb filler. The inner shell is located inside the outer shell, and the honeycomb filler is fixedly connected between the outer shell and the inner shell. One end of the air guide pipe is inserted through the outer shell and the inner shell. Several exhaust holes are opened at the top of the side of the air guide pipe. The air guide pipe is rotatably connected to the inner shell through a bearing, and the air guide pipe is rotatably connected to the outer shell through a plane bearing.

[0008] Preferably, the rotary drive assembly consists of a drive motor, a drive gear, and an internal gear ring. The drive motor is inserted and connected to the side of the top of the central support body, the drive gear is fixedly connected to the output shaft of the drive motor, and the internal gear ring is fixedly connected to the bottom of the inner surface of the inner shell and meshes with the drive gear.

[0009] Preferably, the reaction liquid replacement assembly consists of a support top seat, a second circulation pump, a second extraction pipe, several drainage pipes, a retaining ring, and several conductive components. The support top seat is fixedly connected to the middle position of the top of the outer shell, the second circulation pump is fixedly connected to the inside of the support top seat, the second extraction pipe passes through the support top seat and is connected to the second circulation pump, the drainage pipe passes through the outer shell and is connected to the second circulation pump, the retaining ring is fixedly connected to the side of the top of the support top seat, and the conductive components are fixedly connected to the top of the support top seat and electrically connected to the second circulation pump.

[0010] Preferably, the flow-dividing assembly consists of an annular honeycomb flow-dividing plate and several stirring rods. The annular honeycomb flow-dividing plate is fixedly connected to the outer surface of the outer shell, and the stirring rods are fixedly connected to the top and bottom of the annular honeycomb flow-dividing plate. Several flow-blocking plates matching the flow-dividing assembly are fixedly installed on the inner surface of the tower body.

[0011] Preferably, the conductive component one is composed of a plurality of positive conductive pillars, a plurality of positive conductive contacts, a plurality of negative conductive pillars and a plurality of negative conductive contacts. The positive conductive pillars and negative conductive pillars are fixedly connected to the top of the support base and electrically connected to the circulating pump two. The positive conductive contacts and negative conductive contacts are respectively fixedly connected to the top of the sides of the positive conductive pillars and negative conductive pillars.

[0012] Preferably, the conductive mechanism consists of a detachable bracket, a vertical bracket, a support beam, and a second conductive component. The detachable bracket is inserted into one side of the tower body, the vertical bracket is fixedly connected to one side inside the tower body, the support beam is snapped between the detachable bracket and the vertical bracket, and the second conductive component is electrically connected to the controller through several cables.

[0013] Preferably, the conductive component two consists of a conical sleeve, an insulating support ring, a positive conductive carbon ring, and a negative conductive carbon ring. The conical sleeve is fixedly connected to the middle position of the bottom end of the support beam, the insulating support ring is fixedly connected to the inside of the conical sleeve, the positive conductive carbon ring and the negative conductive carbon ring are respectively fixedly connected to the outer surface and inner surface of the insulating support ring, the positive conductive carbon ring and the negative conductive carbon ring are respectively slidably connected to the positive conductive contact and the negative conductive contact, and an annular groove matching the retaining ring is provided on the side of the bottom end of the conical sleeve.

[0014] Compared with the prior art, the beneficial effects of the present invention are: (1) In operation, by setting up a graphitization furnace, a bag filter, a pressurizing pump, a gas guide pipe, a desulfurization tower and a controller, the graphitization process of the negative electrode graphite material of lithium battery can be realized. Desulfurization is achieved during the graphitization process. By setting up a desulfurization tower consisting of a tower body, a gas-liquid premixing desulfurization mechanism, a conductive mechanism, several spray desulfurizers, a liquid inlet pipe, a circulating pump, a liquid extraction pipe, a sewage discharge pipe and an exhaust port, the sulfur-containing gas generated during the graphitization process can be purified to avoid the sulfur-containing gas being discharged into the air and causing pollution. (2) By setting up a gas-liquid premixing desulfurization mechanism consisting of a central support body, a gas-liquid premixer, a rotary drive assembly, a flow splitting assembly, a flow guide sleeve, an arc-shaped honeycomb flow splitting plate, and a reaction liquid replacement assembly, the sulfur-containing gas can be fully contacted with the reaction liquid, improving the comprehensiveness and fullness of the reaction, thereby improving the effect and efficiency of desulfurization treatment and avoiding air pollution. (3) By setting up a conductive component 1 consisting of several positive conductive pillars, several positive conductive contacts, several negative conductive pillars and several negative conductive contacts, and a conductive component 2 consisting of a conical sleeve, an insulating support ring, a positive conductive carbon ring and a negative conductive carbon ring, it is possible to power the circulating pump 2 during the rotation process, and to replace the reaction liquid inside the gas-liquid premixer through the circulating pump 2, thereby improving the treatment effect of sulfur-containing gas. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0016] In the attached diagram: Figure 1This is one of the schematic diagrams of the desulfurization treatment device for the graphite material of the lithium battery negative electrode of the present invention; Figure 2 This is the second schematic diagram of the desulfurization treatment device for the graphite material of the lithium battery negative electrode of the present invention; Figure 3 This is a schematic diagram of the gas-liquid premixed desulfurization mechanism of the present invention; Figure 4 This is a schematic diagram of the connection structure between the gas-liquid premixed desulfurization mechanism and the tower body of the present invention; Figure 5 This is a cross-sectional view of the gas-liquid premixed desulfurization mechanism of the present invention; Figure 6 For the present invention Figure 5 A magnified view of a portion of the image; Figure 7 This is a schematic diagram of the conductive mechanism structure of the present invention; Figure 8 This is a schematic diagram of the conductive component two of the present invention; Figure 9 This is a schematic diagram of the connection structure between conductive component two and conductive component one of the present invention; In the diagram: 1. Graphitization furnace; 2. Baghouse dust collector; 3. Booster pump; 4. Gas guide pipe; 5. Desulfurization tower; 6. Controller; 7. Tower body; 8. Gas-liquid premixing desulfurization mechanism; 9. Conductive mechanism; 10. Spray desulfurizer; 11. Liquid inlet pipe; 12. Circulation pump one; 13. Liquid extraction pipe one; 14. Sewage pipe; 15. Exhaust port; 16. Central support body; 17. Gas-liquid premixer; 18. Rotary drive assembly; 19. Diversion assembly; 20. Guide sleeve; 21. Arc-shaped honeycomb diversion plate; 22. Reaction liquid replacement assembly; 23. O-ring seal; 24. Bearing one; 25. Outer shell; 26. Inner shell; 27. Honeycomb filler; 28. Exhaust port; 9. Bearing II; 30. Surface bearing; 31. Drive motor; 32. Drive gear; 33. Internal gear ring; 34. Support top seat; 35. Circulation pump II; 36. Liquid extraction pipe II; 37. Drainage pipe; 38. Retaining ring; 39. Conductive component I; 40. Annular honeycomb diverter plate; 41. Stirring rod; 42. Baffle plate; 43. Positive conductive column; 44. Positive conductive contact; 45. Negative conductive column; 46. Negative conductive contact; 47. Detachable bracket; 48. Vertical bracket; 49. Support beam; 50. Conductive component II; 51. Conical sleeve; 52. Insulating support ring; 53. Positive conductive carbon ring; 54. Negative conductive carbon ring; 55. Annular groove. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] Example 1, by Figure 1 and Figure 2 The present invention discloses a desulfurization treatment device for graphite materials used in lithium-ion battery anodes, comprising a graphitization furnace 1, a bag filter 2, a pressurizing pump 3, a gas duct 4, a desulfurization tower 5, and a controller 6. The gas duct 4 is connected between the graphitization furnace 1 and the desulfurization tower 5. The bag filter 2 and the pressurizing pump 3 are both connected to the gas duct 4. The desulfurization tower 5 is electrically connected to the controller 6. The desulfurization tower 5 consists of a tower body 7, a gas-liquid premixing desulfurization mechanism 8, a conductive mechanism 9, several spray desulfurizers 10, a liquid inlet pipe 11, a circulating pump 12, a liquid extraction pipe 13, a sewage discharge pipe 14, and an exhaust port 15. The premixed desulfurization mechanism 8 is connected to the bottom of the tower body 7 and is connected to the gas guide pipe 4. The conductive mechanism 9 is connected to the middle position inside the tower body 7 and is connected in conjunction with the gas-liquid premixed desulfurization mechanism 8. The spray desulfurizer 10 is fixedly connected to the top of the tower body 7. The liquid extraction pipe 13 is connected to one side of the tower body 7 and is fixedly connected to the spray desulfurizer 10. The liquid inlet pipe 11 is connected to the top of the side of the liquid extraction pipe 13. The circulating pump 12 is connected to the liquid extraction pipe 13. The sewage discharge pipe 14 is fixedly connected to one side of the bottom of the tower body 7. The exhaust port 15 is fixedly connected to the top of the tower body 7. The graphite material of the lithium battery negative electrode is graphitized in a graphitization furnace 1. The sulfur-containing gas generated during the graphitization process enters the interior of the gas guide pipe 4. The sulfur-containing gas is dusted by a bag filter 2 and then pressurized by a pressurizing pump 3, so that the sulfur-containing gas enters the interior of the desulfurization tower 5 and then enters the interior of the gas-liquid premixed desulfurization mechanism 8. Since the gas-liquid premixed desulfurization mechanism 8 is located inside the treatment liquid, the sulfur-containing gas can react with the treatment liquid in advance to achieve pretreatment of the sulfur-containing gas and improve the desulfurization effect. Then, the gas is subjected to secondary spray treatment by the spray desulfurizer 10 to further improve the desulfurization effect. The spray desulfurizer 10 is continuously supplied with liquid by the circulation pump 12 and the liquid extraction pipe 13 to achieve the circulation of the treatment liquid. New treatment liquid can be added periodically through the liquid inlet pipe 11.

[0019] Example 2, based on Example 1, is... Figures 1 to 6The gas-liquid premixed desulfurization mechanism 8 is composed of a central support body 16, a gas-liquid premixer 17, a rotary drive assembly 18, a flow divider assembly 19, a flow guide sleeve 20, an arc-shaped honeycomb flow divider plate 21, and a reaction liquid replacement assembly 22. The central support body 16 is fixedly connected to the middle position of the bottom of the tower body 7. The gas guide pipe 4 passes through the central support body 16 and is connected to it through several O-rings 23. The gas-liquid premixer 17 is sleeved on the central support body 16 and is rotatably connected to it through a bearing 24. The rotary drive assembly 18 is connected between the central support body 16 and the gas-liquid premixer 17. The flow divider assembly 19 is connected to the bottom end of the outer surface of the gas-liquid premixer 17. The flow guide sleeve 20 is fixedly connected to the bottom end of the inner surface of the tower body 7. The reaction liquid replacement assembly 22 is fixedly connected to the top end of the gas-liquid premixer 17. The arc-shaped honeycomb flow divider plate 21 is fixedly connected to the outer surface of the reaction liquid replacement assembly 22 and matches the arc-shaped honeycomb flow divider plate 21. The central support 16 supports the gas-liquid premixer 17, the rotary drive assembly 18 drives the gas-liquid premixer 17 to rotate, the diversion assembly 19, the guide sleeve 20 and the arc-shaped honeycomb diversion plate 21 can perform two diversion operations on the gas discharged from the gas-liquid premixer 17, so that the gas is fully dispersed, and the reaction liquid replacement assembly 22 can continuously replace the reaction liquid inside the gas-liquid premixer 17, thereby improving the state of the reaction liquid; The gas-liquid premixer 17 is composed of an outer shell 25, an inner shell 26 and a honeycomb filler 27. The inner shell 26 is located inside the outer shell 25. The honeycomb filler 27 is fixedly connected between the outer shell 25 and the inner shell 26. One end of the air guide pipe 4 is inserted through the outer shell 25 and the inner shell 26. Several exhaust holes 28 are opened at the top of the side of the air guide pipe 4. The air guide pipe 4 and the inner shell 26 are rotatably connected by a bearing 29. The air guide pipe 4 and the outer shell 25 are rotatably connected by a plane bearing 30. The gas enters between the outer shell 25 and the inner shell 26, and then passes through the honeycomb filler 27. The honeycomb filler 27 can continuously change the flow path of the gas. Since the honeycomb filler 27 is filled with reaction liquid, the gas can fully react with the reaction liquid, thereby improving the desulfurization effect. The rotary drive assembly 18 consists of a drive motor 31, a drive gear 32, and an internal gear ring 33. The drive motor 31 is inserted and connected to the side of the top of the central support body 16. The drive gear 32 is fixedly connected to the output shaft of the drive motor 31. The internal gear ring 33 is fixedly connected to the bottom of the inner surface of the inner sleeve 26 and meshes with the drive gear 32. The drive motor 31 drives the drive gear 32 to rotate, and the drive gear 32 drives the internal gear ring 33 to rotate, thereby driving the gas-liquid premixer 17 to rotate, which can stir the reaction liquid, improve the uniformity, and thus improve the fullness of the reaction with the gas. The reaction liquid replacement assembly 22 consists of a support top seat 34, a second circulation pump 35, a second extraction pipe 36, several drainage pipes 37, a retaining ring 38, and several conductive components 39. The support top seat 34 is fixedly connected to the middle position of the top of the outer shell 25. The second circulation pump 35 is fixedly connected to the inside of the support top seat 34. The second extraction pipe 36 passes through the support top seat 34 and is connected to the second circulation pump 35. The drainage pipes 37 pass through the outer shell 25 and are connected to the second circulation pump 35. The retaining ring 38 is fixedly connected to the side of the top of the support top seat 34. The conductive components 39 are fixedly connected to the top of the support top seat 34 and are electrically connected to the second circulation pump 35. The second circulation pump 35 operates, continuously drawing the reaction liquid through the second liquid extraction pipe 36, and then discharging the reaction liquid into the gas-liquid premixer 17 through the liquid discharge pipe 37, thereby continuously replacing the reaction liquid inside the gas-liquid premixer 17. The reaction liquid is in full contact with the gas inside the gas-liquid premixer 17 to achieve desulfurization. The flow distribution assembly 19 consists of an annular honeycomb flow distribution plate 40 and several stirring rods 41. The annular honeycomb flow distribution plate 40 is fixedly connected to the outer surface of the outer shell 25, and the stirring rods 41 are fixedly connected to the top and bottom of the annular honeycomb flow distribution plate 40. Several flow baffles 42 that match the flow distribution assembly 19 are fixedly provided on the inner surface of the tower body 7. The annular honeycomb flow divider 40 and the stirring rod 41 can disperse the gas and stir the reaction liquid. The flow obstruction plate 42 can obstruct the flow. Through the combined action of the stirring rod 41 and the flow obstruction plate 42, the reaction liquid can be fully stirred and homogenized.

[0020] Example 3, based on Example 2, by Figure 2 , Figure 6 , Figure 7 , Figure 8 and Figure 9The conductive component 39 is composed of several positive conductive posts 43, several positive conductive contacts 44, several negative conductive posts 45, and several negative conductive contacts 46. The positive conductive posts 43 and negative conductive posts 45 are fixedly connected to the top of the support base 34 and electrically connected to the circulation pump 35. The positive conductive contacts 44 and negative conductive contacts 46 are respectively fixedly connected to the top of the sides of the positive conductive posts 43 and negative conductive posts 45. The conductive mechanism 9 is composed of a detachable bracket 47, a vertical bracket 48, a support beam 49, and the conductive component 50. The detachable bracket 47 is inserted into one side of the tower body 7, the vertical bracket 48 is fixedly connected to one side inside the tower body 7, and the support beam 49 is snapped into the detachable bracket 47. Between seat 47 and vertical card seat 48, conductive component 2 50 is electrically connected to controller 6 through several cables. Conductive component 2 50 is composed of conical sleeve 51, insulating support ring 52, positive conductive carbon ring 53 and negative conductive carbon ring 54. Conical sleeve 51 is fixedly connected to the middle position of the bottom end of support beam 49. Insulating support ring 52 is fixedly connected to the inside of conical sleeve 51. Positive conductive carbon ring 53 and negative conductive carbon ring 54 are respectively fixedly connected to the outer surface and inner surface of insulating support ring 52. Positive conductive carbon ring 53 and negative conductive carbon ring 54 are slidably connected to positive conductive contact 44 and negative conductive contact 46 respectively. An annular groove 55 matching the retaining ring 38 is opened on the side of the bottom end of conical sleeve 51. The rotating circulation pump 35 requires power to perform the reaction liquid replacement operation. The positive conductive post 43, positive conductive contact 44, negative conductive post 45, and negative conductive contact 46 are electrically connected to the circulation pump 35 and rotate with the reaction liquid replacement assembly 22. The positive conductive contact 44 and negative conductive contact 46 contact the positive conductive carbon ring 53 and negative conductive carbon ring 54 respectively to achieve sliding power supply, thereby ensuring the normal operation of the circulation pump 35. The positive conductive carbon ring 53 and negative conductive carbon ring 54 are consumable parts. When the positive conductive carbon ring 53 and negative conductive carbon ring 54 are severely worn, the detachable bracket 47, vertical bracket 48, and support beam 49 can be disassembled, and then the positive conductive carbon ring 53 and negative conductive carbon ring 54 can be replaced.

[0021] In operation, the system, equipped with a graphitization furnace, bag filter, pressurized pump, gas duct, desulfurization tower, and controller, enables the graphitization of graphite materials for lithium-ion battery anodes. Desulfurization is achieved during the graphitization process. The desulfurization tower, consisting of a tower body, gas-liquid premixing desulfurization mechanism, conductive mechanism, several spray desulfurizers, inlet pipe, circulating pump, extraction pipe, drain pipe, and exhaust port, effectively purifies the sulfur-containing gases generated during graphitization, preventing them from being released into the air and causing pollution. The system also incorporates a central support, gas-liquid premixer, rotary drive assembly, flow distribution assembly, guide sleeve, and arc-shaped honeycomb flow distribution plate. The gas-liquid premixing desulfurization mechanism, consisting of a reaction liquid replacement component, enables the sulfur-containing gas to fully contact the reaction liquid, improving the comprehensiveness and completeness of the reaction, thereby enhancing the desulfurization effect and efficiency and preventing air pollution. By setting up a conductive component one consisting of several positive conductive columns, several positive conductive contacts, several negative conductive columns, and several negative conductive contacts, and a conductive component two consisting of a conical sleeve, an insulating support ring, a positive conductive carbon ring, and a negative conductive carbon ring, power can be supplied to the circulating pump two during the rotation process. The circulating pump two replaces the reaction liquid inside the gas-liquid premixer, improving the treatment effect of sulfur-containing gas.

Claims

1. A desulfurization treatment device for graphite material of lithium battery negative electrode, comprising a graphitization furnace (1), a bag filter (2), a pressurizing pump (3), a gas guide pipe (4), a desulfurization tower (5), and a controller (6), characterized in that: The gas guide pipe (4) is connected between the graphitization furnace (1) and the desulfurization tower (5). The bag filter (2) and the pressurization pump (3) are both connected to the gas guide pipe (4). The desulfurization tower (5) is electrically connected to the controller (6). The desulfurization tower (5) consists of a tower body (7), a gas-liquid premixed desulfurization mechanism (8), a conductive mechanism (9), several spray desulfurizers (10), a liquid inlet pipe (11), a circulating pump (12), a liquid extraction pipe (13), a sewage discharge pipe (14), and an exhaust port (15). The gas-liquid premixed desulfurization mechanism (8) is connected to the bottom of the tower body (7) and is connected to the gas guide pipe (4). The connection is as follows: the conductive mechanism (9) is connected to the middle position inside the tower body (7) and is connected in conjunction with the gas-liquid premixed desulfurization mechanism (8); the spray desulfurizer (10) is fixedly connected to the top of the tower body (7); the first liquid extraction pipe (13) is connected to one side of the tower body (7) and is fixedly connected to the spray desulfurizer (10); the liquid inlet pipe (11) is connected to the top of the side of the first liquid extraction pipe (13); the first circulating pump (12) is connected to the first liquid extraction pipe (13); the sewage pipe (14) is fixedly connected to one side of the bottom end of the tower body (7); and the exhaust port (15) is fixedly connected to the top of the tower body (7). The gas-liquid premixed desulfurization mechanism (8) consists of a central support body (16), a gas-liquid premixer (17), a rotary drive assembly (18), a flow divider assembly (19), a flow guide sleeve (20), an arc-shaped honeycomb flow divider plate (21), and a reaction liquid replacement assembly (22). The central support body (16) is fixedly connected to the middle position of the bottom of the tower body (7). The gas guide pipe (4) is inserted through the central support body (16) and connected to it through several O-ring seals (23). The gas-liquid premixer (17) is fitted onto the central support body (16) and connected to it through several O-ring seals (23). Bearing 1 (24) is rotatably connected to it, the rotary drive assembly (18) is connected between the central support body (16) and the gas-liquid premixer (17), the diversion assembly (19) is connected to the bottom end of the outer surface of the gas-liquid premixer (17), the guide sleeve (20) is fixedly connected to the bottom end of the inner surface of the tower body (7), the reaction liquid replacement assembly (22) is fixedly connected to the top end of the gas-liquid premixer (17), and the arc honeycomb diversion plate (21) is fixedly connected to the outer surface of the reaction liquid replacement assembly (22) and matches the arc honeycomb diversion plate (21); The gas-liquid premixer (17) is composed of an outer shell (25), an inner shell (26) and a honeycomb filler (27). The inner shell (26) is located inside the outer shell (25). The honeycomb filler (27) is fixedly connected between the outer shell (25) and the inner shell (26). One end of the gas guide pipe (4) is inserted between the outer shell (25) and the inner shell (26). Several exhaust holes (28) are opened at the top of the side of the gas guide pipe (4). The gas guide pipe (4) and the inner shell (26) are rotatably connected by bearing two (29). The gas guide pipe (4) and the outer shell (25) are rotatably connected by a plane bearing (30). The reaction liquid replacement assembly (22) consists of a support top seat (34), a second circulation pump (35), a second suction pipe (36), several drainage pipes (37), a retaining ring (38), and several first conductive components (39). The support top seat (34) is fixedly connected to the middle position of the top of the outer shell (25). The second circulation pump (35) is fixedly connected to the inside of the support top seat (34). The second suction pipe (36) passes through the support top seat (34) and is connected to the second circulation pump (35). The drainage pipe (37) passes through the outer shell (25) and is connected to the second circulation pump (35). The retaining ring (38) is fixedly connected to the side of the top of the support top seat (34). The first conductive component (39) is fixedly connected to the top of the support top seat (34) and is electrically connected to the second circulation pump (35). The flow divider assembly (19) consists of an annular honeycomb flow divider plate (40) and several stirring rods (41). The annular honeycomb flow divider plate (40) is fixedly connected to the outer surface of the outer shell (25), and the stirring rods (41) are fixedly connected to the top and bottom of the annular honeycomb flow divider plate (40). Several flow baffles (42) matching the flow divider assembly (19) are fixedly installed on the inner surface of the tower body (7).

2. The desulfurization treatment device for lithium battery negative electrode graphite material according to claim 1, characterized in that: The rotary drive assembly (18) consists of a drive motor (31), a drive gear (32) and an internal gear ring (33). The drive motor (31) is inserted and connected to the side of the top of the central support body (16). The drive gear (32) is fixedly connected to the output shaft of the drive motor (31). The internal gear ring (33) is fixedly connected to the bottom of the inner surface of the inner shell (26) and meshes with the drive gear (32).

3. The desulfurization treatment device for lithium battery negative electrode graphite material according to claim 1, characterized in that: The first conductive component (39) is composed of several positive conductive posts (43), several positive conductive contacts (44), several negative conductive posts (45) and several negative conductive contacts (46). The positive conductive posts (43) and negative conductive posts (45) are fixedly connected to the top of the support base (34) and electrically connected to the second circulating pump (35). The positive conductive contacts (44) and negative conductive contacts (46) are fixedly connected to the top of the sides of the positive conductive posts (43) and negative conductive posts (45), respectively.

4. The desulfurization treatment device for lithium battery negative electrode graphite material according to claim 1, characterized in that: The conductive mechanism (9) consists of a detachable card holder (47), a vertical card holder (48), a support beam (49), and a second conductive component (50). The detachable card holder (47) is inserted into one side of the tower body (7), the vertical card holder (48) is fixedly connected to one side inside the tower body (7), the support beam (49) is snapped between the detachable card holder (47) and the vertical card holder (48), and the second conductive component (50) is electrically connected to the controller (6) through several cables.

5. The desulfurization treatment device for lithium battery negative electrode graphite material according to claim 4, characterized in that: The conductive component 2 (50) is composed of a conical sleeve (51), an insulating support ring (52), a positive conductive carbon ring (53), and a negative conductive carbon ring (54). The conical sleeve (51) is fixedly connected to the middle position of the bottom end of the support beam (49). The insulating support ring (52) is fixedly connected to the inside of the conical sleeve (51). The positive conductive carbon ring (53) and the negative conductive carbon ring (54) are respectively fixedly connected to the outer surface and the inner surface of the insulating support ring (52). The positive conductive carbon ring (53) and the negative conductive carbon ring (54) are slidably connected to the positive conductive contact (44) and the negative conductive contact (46), respectively. The side of the bottom end of the conical sleeve (51) is provided with an annular groove (55) that matches the retaining ring (38).

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