Continuous carbonization rotary furnace for negative electrode of sodium battery

Abstract

A heating furnace tube is rotationally arranged on a heating supporting seat, the two ends of the heating furnace tube are connected with a furnace head cover and a furnace tail cover in a dynamic sealing mode, and a feeding assembly penetrates through the furnace head cover and extends into the heating furnace tube, so that crushed materials are conveyed to a guiding assembly and rotate along with the heating furnace tube; the materials can be uniformly overturned and pushed forwards; the heating assembly surrounds the periphery of the heating furnace pipe, and the waste heat utilization assembly is connected into the heating assembly and the heating furnace pipe so as to achieve waste heat utilization. The cooling furnace tube is rotationally arranged on the cooling supporting seat, two ends of the cooling furnace tube are in dynamic sealing connection with the furnace head cover and the furnace tail cover, and the heating furnace tube is connected to the cooling furnace tube through an inclined articulated chute, so that sintered materials are conveyed into the cooling furnace tube; the cooling assembly spirally extends into the cooling furnace tube so as to achieve material cooling. The device has the characteristics of continuous feeding and discharging, crushing function, sufficient material overturning, precise and controllable sintering time, high cooling efficiency and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of rotary furnaces, and in particular relates to a rotary furnace for continuous carbonization of negative electrodes of sodium batteries. Background Art

[0002] In the process of using rotary kilns for carbonization of sodium negative electrodes, tar waste gas is generated during the carbonization process. Tar is easy to condense and block pipes, and tar treatment is troublesome and wastes heat. When biomass materials are in strip or block form, the feeder screw is seriously damaged. During the sintering process of materials with a high moisture content (such as biomass materials with high humidity) or a large amount of sintering carbonization and binder removal, a large amount of water vapor or gasified tar needs to be discharged to fully dry or carbonize the materials. For the sintering of materials with higher quality requirements, most of the time, it is necessary to accurately control the sintering residence time to ensure the quality of the materials. After the sintering of the materials is completed, the materials need to be cooled before they can be packaged, so a high-efficiency cooling device is required.

[0003] To solve the above problems, the existing solutions include: insulation or even heating of the exhaust pipe, but it is still difficult to avoid tar condensation. Heat recovery uses heat exchangers, but the heat exchange efficiency of heat exchangers is limited. When the material is in strip or block form, manual pre-crushing or additional crushing devices are used. These two forms make it impossible to achieve continuous production of continuous equipment or require additional series devices to increase operating costs.

[0004] When solving the problem of high moisture content or large amount of sintering carbonization binder discharge, the existing method is to add a lifting plate, but the sintering residence time is difficult to achieve precise control. When achieving precise control of the sintering residence time, the existing equipment uses an additional spiral push plate device for control, but on the one hand, the spiral push plate cannot have a flipping effect on the material, and on the other hand, the setting of the spiral push plate is equivalent to reducing the diameter of the gas flow channel in the radial direction, reducing the flow rate of the exhaust gas under the same flow rate, thereby weakening the drying or carbonization effect. In the cooling setting, the existing equipment uses the outer wall of the furnace tube to spray cooling water. This method has low cooling efficiency and consumes a lot of water. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a sodium battery negative electrode continuous carbonization rotary furnace with compact structure, continuous material loading and unloading, self-contained crushing function, sufficient material turning, precise and controllable sintering time and high cooling efficiency in view of the above defects of the existing rotary furnace. To achieve the above purpose, the present invention can adopt the following technical solutions:

[0006] A sodium battery negative electrode continuous carbonization rotary kiln, comprising: a heating support seat, a heating furnace tube, a heating component, a waste heat utilization component, a cooling furnace tube, a cooling support seat, a cooling component, a feeding component and a guide component;

[0007] The heating furnace tube is rotatably arranged on the heating support seat, and the two ends of the heating furnace tube are respectively connected to the heating furnace head cover and the heating furnace tail cover for dynamic sealing. A guide assembly is arranged in the heating furnace tube, and the feeding assembly is arranged on the heating support seat, and the output end of the feeding assembly passes through the heating furnace head cover and extends into the heating furnace tube. After the material is crushed by the feeding assembly, it is transported to the guide assembly in the heating furnace tube, and as the heating furnace tube rotates, the material is evenly turned over and pushed forward in the heating furnace tube; the heating assembly is arranged around the outer periphery of the heating furnace tube to realize heating and sintering of the material, one end of the waste heat utilization assembly is connected to the heating assembly, and the other end of the waste heat utilization assembly passes through the heating furnace tail cover and extends into the heating furnace tube, so that the waste heat in the heating furnace tube is input into the heating assembly;

[0008] The cooling furnace tube is rotatably arranged on the cooling support seat, and the two ends of the cooling furnace tube are respectively dynamically sealed with the cooling furnace head cover and the cooling furnace tail cover. An inclined chute is provided at the bottom of the heating furnace tail cover, and the output end of the inclined chute passes through the cooling furnace head cover and extends into the cooling furnace tube, so as to realize the transportation of the sintered material in the heating furnace tube to the cooling furnace tube; the cooling component passes through the cooling furnace tail cover and spirally extends into the cooling furnace tube, so as to realize the cooling of the sintered material.

[0009] As a further improvement of the present invention, the feeding assembly includes a feeder, a vibrating base and an inclined discharge pipe; the vibrating base is arranged on a heating support seat, the feeder is arranged on a vibrating base, one end of the inclined discharge pipe is connected to an output end of the feeder, and the other end of the inclined discharge pipe penetrates the heating furnace head cover and extends into the heating furnace tube. After the material is crushed by the feeder, it falls into the heating furnace tube through the inclined discharge pipe.

[0010] As a further improvement of the present invention, the feed assembly also includes a pusher, which is connected to the output end of the feeder and faces the inclined discharge pipe to push the material in the inclined discharge pipe to fall into the heating furnace tube.

[0011] As a further improvement of the present invention, the guide assembly includes a material guide inclined plate and a material baffle plate arranged on the inner wall surface of the heating furnace tube; the material guide inclined plate is located at the front end of the heating furnace tube and is connected to the feed assembly; the material baffle plate is located at the rear end of the material guide inclined plate, and the material baffle plate is arranged along the axial direction of the heating furnace tube, and two adjacent material baffle plates are staggered in the axial direction to control the axial displacement of the material in the heating furnace tube.

[0012] As a further improvement of the present invention, a plurality of the material guiding inclined plates are arranged in a single circle in the same cross section; a single material blocking plate is arranged in a single circle in the same cross section, and the material blocking plates are arranged alternately and staggered in different cross sections.

[0013] As a further improvement of the present invention, the heating component includes a heating chamber, the heating furnace tube runs through the heating chamber, a heater is provided at the bottom of the heating chamber, and an air inlet and an air exhaust port are respectively provided on both sides of the top of the heating chamber. The air inlet is connected to the waste heat utilization component through a hot air duct, and the air exhaust port is provided with an exhaust fan to enable the hot air in the waste heat utilization component to flow to the heating chamber, so as to preheat the material in the heating furnace tube.

[0014] As a further improvement of the present invention, the waste heat utilization component includes an incinerator; an upwardly inclined tail gas inlet pipe is provided at the bottom of the incinerator, the tail gas inlet pipe passes through the heating furnace tail cover and extends into the heating furnace tube, and the top of the incinerator is connected to the heating chamber through a hot air duct; an igniter and an air compensation port are provided on the side of the incinerator, and the tar tail gas generated in the heating furnace tube burns in the incinerator to form high-temperature hot air, and the high-temperature hot air is input into the heating chamber through the hot air duct.

[0015] As a further improvement of the present invention, the outer side of the heating furnace tube is wrapped with a first insulation layer, the outer side of the incinerator is wrapped with a second insulation layer, and the air compensation port is provided with an air supply fan.

[0016] As a further improvement of the present invention, the cooling assembly includes a spiral cooling pipe, a double-layer jacketed pipe, a drain pipe and a liquid inlet pipe; the spiral cooling pipe is spirally distributed at the tail end of the cooling furnace pipe, the double-layer jacketed pipe runs through the cooling furnace tail cover, the two ends of the inner tube of the double-layer jacketed pipe are respectively connected to the liquid outlet and the drain pipe of the spiral cooling pipe, and the two ends of the outer tube of the double-layer jacketed pipe are connected to the liquid inlet and the liquid inlet pipe of the spiral cooling pipe.

[0017] As a further improvement of the present invention, the heating furnace tubes and the cooling furnace tubes are both arranged at an incline.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] 1. The sodium battery negative electrode continuous carbonization rotary kiln of the present invention is characterized in that a heating furnace head cover and a heating furnace tail cover are respectively arranged at both ends of the heating furnace tube, and a guide assembly is arranged in the furnace tube. The output end of the feeding assembly passes through the furnace head cover and extends into the furnace tube. After the material is crushed by the feeding assembly, it is transported to the guide assembly in the furnace tube, that is, the material is automatically fed. As the furnace tube rotates, the material is evenly turned over and pushed forward in the furnace tube through the guide assembly. At the same time, the sintering time of the material in the furnace tube can be accurately controlled, which is beneficial to improving the sintering quality of the material. At the same time, the heating system is arranged around the outer periphery of the furnace tube, which realizes The material is evenly heated and sintered; a cooling furnace head cover and a cooling furnace tail cover are respectively arranged at both ends of the cooling furnace tube, and an inclined chute is arranged at the bottom of the heating furnace tail cover, and the output end of the inclined chute passes through the cooling furnace head cover and extends into the cooling furnace tube, so that the material sintered in the heating furnace tube is transported to the cooling furnace tube; further, the cooling component passes through the cooling furnace tail cover and spirally extends into the cooling furnace tube, so that the material after sintering is cooled down. Since the heating furnace tube and the cooling furnace tube are operated separately and independently, the water demand for material cooling is small, and the cooling contact area is large, the cooling effect is good, and the production efficiency of sodium battery negative electrode carbonization is significantly improved.

[0020] 2. The sodium battery negative electrode continuous carbonization rotary kiln of the present invention adopts an inclined feeding pipe to cooperate with the feeder. Under the action of the vibrating base, the material is crushed by the feeder and then fed along the inclined large-diameter feeding pipe, so that the material is smoother. At the same time, a pusher is provided. When the material is abnormally blocked, it can also be unblocked by pushing the pusher, thereby ensuring the reliability of the feeding.

[0021] 3. The sodium battery negative electrode continuous carbonization rotary kiln of the present invention avoids tar condensation and polluting materials by obliquely inserting the tail gas input pipe into the high temperature zone at the rear of the heating furnace tube, and uses an incinerator to burn the tar nearby and generate high-temperature hot gas for heating the furnace body, thereby realizing the utilization of waste heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structural principle of a rotary furnace for continuous carbonization of negative electrodes of sodium batteries in a specific embodiment of the present invention;

[0023] Legend: 1. Heating support seat; 2. Feeder; 3. Heating furnace head cover; 4. Heating furnace tube; 5. Heating component; 6. Hot air duct; 7. Waste heat utilization component; 8. Heating furnace tail cover; 9. Cooling furnace head cover; 10. Cooling furnace tube; 11. Cooling support seat; 12. Cooling component; 13. Cooling furnace tail cover; 14. Vibrating base; 15. Pusher; 16. Inclined discharge pipe; 17. Feeding port; 18. Guide ramp; 19. Exhaust fan; 20. Baffle plate; 21. First insulation layer; 22. Heating chamber; 23. Second insulation layer; 24. Incinerator; 25. Ignitor; 26. Air compensation port; 27. Exhaust gas inlet pipe; 28. Inclined chute; 29. ​​Spiral cooling pipe; 30. Double-layer jacketed pipe; 31. Drain pipe; 32. Liquid inlet pipe; 33. Heater. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0025] In the description of the present invention, it should be understood that the terms "side", "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" 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, and do not indicate or imply 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.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of the indicated technical features. 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, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0027] Example

[0028] like Figure 1 As shown, the sodium battery negative electrode continuous carbonization rotary kiln of the present invention includes: a heating support seat 1, a heating furnace tube 4, a heating component 5, a waste heat utilization component 7, a cooling furnace tube 10, a cooling support seat 11, a cooling component 12, a feeding component and a guide component.

[0029] The heating furnace tube 4 is rotatably arranged on the heating support seat 1, and the two ends of the heating furnace tube 4 are respectively connected to the heating furnace head cover 3 and the heating furnace tail cover 8 for dynamic sealing. A guide assembly is arranged in the heating furnace tube 4, and the feed assembly is arranged on the heating support seat 1, and the output end of the feed assembly passes through the heating furnace head cover 3 and extends into the heating furnace tube 4. After the material is crushed by the feed assembly, it is transported to the guide assembly in the heating furnace tube 4, and as the heating furnace tube 4 rotates, the material is evenly turned over and pushed forward in the heating furnace tube 4. The heating assembly 5 is arranged around the outer periphery of the heating furnace tube 4 to achieve heating and sintering of the material. One end of the waste heat utilization assembly 7 is connected to the heating assembly 5, and the other end of the waste heat utilization assembly 7 passes through the heating furnace tail cover 8 and extends into the heating furnace tube 4, so that the waste heat in the heating furnace tube 4 is input into the heating assembly 5.

[0030] The cooling furnace tube 10 is rotatably arranged on the cooling support seat 11, and the two ends of the cooling furnace tube 10 are respectively connected to the cooling furnace head cover 9 and the cooling furnace tail cover 13 in a dynamic sealing manner. The bottom of the heating furnace tail cover 8 is provided with an inclined chute 28, and the output end of the inclined chute 28 passes through the cooling furnace head cover 9 and extends into the cooling furnace tube 10, so as to realize the transportation of the sintered materials in the heating furnace tube 4 to the cooling furnace tube 10. The cooling assembly 12 passes through the cooling furnace tail cover 13 and spirally extends into the cooling furnace tube 10, so as to realize the cooling and temperature reduction of the sintered materials.

[0031] In this embodiment, the heating furnace tube 4 and the cooling furnace tube 10 are both inclined at a certain angle to facilitate the movement of materials in the furnace body. An air inlet is provided in the heating furnace head cover 3, through which protective gas can be transported into the heating furnace tube 4. A corresponding material outlet is provided at the bottom of the cooling furnace tail cover 13, and the cooled material is discharged from the material outlet to achieve continuous production.

[0032] In this embodiment, the heating furnace tube 4 and the cooling furnace tube 10 are separated and operated independently, and a preheating utilization component is provided to collect and utilize the heat energy in the heating furnace tube 4, which not only improves the efficiency of material sintering, but also improves the utilization efficiency of heat energy. In addition, when cooling in the material cooling furnace tube 10, the amount of water required is small, the cooling contact area is large, the cooling effect is good, and the production efficiency of sodium negative electrode carbonization is significantly improved.

[0033] like Figure 1 As shown, the feed assembly includes a feeder 2, a vibrating base 14 and an inclined feed tube 16. The vibrating base 14 is arranged on the heating support seat 1, the feeder 2 is arranged on the vibrating base 14, one end of the inclined feed tube 16 is connected to the output end of the feeder 2, and the other end of the inclined feed tube 16 penetrates the heating furnace head cover 3 and extends into the heating furnace tube 4. After the strip or block material is broken by the feeder 2, it falls into the heating furnace tube 4 through the inclined feed tube 16 under the action of the vibrating base 14.

[0034] Furthermore, the feed assembly further includes a pusher 15, which is connected to the output end of the feeder 2 and faces the inclined feed tube 16, so as to push the material in the inclined feed tube 16 to fall into the heating furnace tube 4. The pusher 15 can be specifically in the form of a piston push rod, which has a simple structure and is easy to operate. When the material is blocked in the inclined feed tube 16, the feed can be unblocked by pushing the pusher 15.

[0035] like Figure 1 As shown, the guide assembly includes a guide ramp 18 and a baffle plate 20 arranged on the inner wall of the heating furnace tube 4. The guide ramp 18 is located at the front end of the heating furnace tube 4 and docks with the feed assembly. The baffle plate 20 is located at the rear end of the guide ramp 18. The baffle plates 20 are arranged along the axial direction of the heating furnace tube 4, and two adjacent baffle plates 20 are mutually staggered in the axial direction to control the axial displacement of the material in the heating furnace tube 4.

[0036] Furthermore, multiple guide inclined plates 18 are provided in a single circle on the same cross section. One material blocking plate 20 is provided in a single circle on the same cross section, and different cross sections are alternately staggered.

[0037] In this embodiment, after the material enters the heating furnace tube 4, due to the inclination angle and the rotation of the heating furnace tube 4, the material moves from the furnace head to the furnace tail inside the heating furnace tube 4. A plurality of material guide inclined plates 18 are arranged in a single circle in the material guide area of ​​the heating furnace tube 4. When the material is transported by the feeder 2 and falls into the front end of the heating furnace tube 4, since there is a certain angle between the material guide inclined plates 18 and the axial direction of the heating furnace tube 4, when the heating furnace tube 4 rotates, the material guide inclined plates 18 will bring the material to the rear end in time to prevent the material from being blocked at the feed inlet of the heating furnace tube 4. A plurality of mutually displaced material baffles 20 are arranged in the axial direction of the heating furnace tube 4 in the material baffle area of ​​the heating furnace tube 4, and the axial distance between each material baffle 20 is fixed. When the material enters the material baffle area, the first material baffle 20 at the bottom of the heating furnace tube 4 blocks the material from moving forward. When the heating furnace tube 4 rotates, the first material baffle 20 gradually flips to the top of the heating furnace tube 4. Since the first material baffle 20 moves to the top of the heating furnace tube 4, the material moves forward without obstruction. However, when the first baffle plate 20 flips to the top of the heating furnace tube 4, the second baffle plate 20 at the top of the heating furnace tube 4 flips to the bottom of the heating furnace tube 4, and the material stops moving due to the obstruction of the second baffle plate 20. In this process, the distance that the material moves forward in the heating furnace tube 4 is the axial distance between the first baffle plate 20 and the second baffle plate 20. Therefore, by setting the distance between the baffle plates 20 and then controlling the speed, the material movement speed can be accurately controlled.

[0038] At the same time, the guide ramp 18 is set in multiple pieces in a single circle, so it will not cause axial obstruction to the exhaust channel in the axial direction, and the baffle plate 20 is set in only one piece in a single circle of the same cross section, and the different cross sections are set alternately and staggered, so the baffle plate 20 only forms an axial obstruction of the size of a single piece, and the axial obstruction of the exhaust channel is small, so the setting of the guide ramp 18 and the baffle plate 20 ensures the smooth flow of the exhaust channel and the maximum exhaust volume, so that the material is fully dried or carbonized. In addition, other areas inside the heating furnace tube 4 can be set with a lifting plate. When the heating furnace tube 4 rotates, the lifting plate lifts the material to achieve the purpose of accelerating drying or carbonization.

[0039] like Figure 1 As shown, the heating component 5 includes a heating chamber 22, and the heating furnace tube 4 runs through the heating chamber 22. The first insulation layer 21 is wrapped around the outside of the heating furnace tube 4 to insulate the heating area of ​​the heating furnace tube 4 to improve the heating uniformity of the material in the heating furnace tube 4. A heater 33 is provided at the bottom of the heating chamber 22 to continuously heat the heating furnace tube 4. An air inlet and an air outlet are provided on both sides of the top of the heating chamber 22, respectively. The air inlet is connected to the waste heat utilization component 7 through a hot air duct 6, and the air outlet is provided with an exhaust fan 19 to realize the flow and extraction of hot air in the heating chamber 22. At the same time, the hot air in the waste heat utilization component 7 can also flow to the heating chamber 22 to preheat the material in the heating furnace tube 4.

[0040] like Figure 1 As shown, the waste heat utilization component 7 includes an incinerator 24. An upwardly inclined tail gas inlet pipe 27 is provided at the bottom of the incinerator 24. The tail gas inlet pipe 27 penetrates the heating furnace tail cover 8 and extends into the heating furnace tube 4. The top of the incinerator 24 is connected to the heating chamber 22 through the hot air duct 6. The insertion position of the tail gas inlet pipe 27 is the tail end of the heating furnace tube 4. The temperature at this position is higher than the temperature at the front end. Therefore, the tar tail gas generated by the sintering of the material is in a gaseous state at this position and is not easy to condense. At the same time, the tail gas inlet pipe 27 is inserted upwardly. Even if the tail gas in the tail gas inlet pipe 27 encounters condensation, the condensation of the tar tail gas will flow into the incinerator 24 along the tail gas inlet pipe 27 under the action of gravity, and will not pollute the sintered material at the tail of the heating furnace tube 4. An igniter 25 and an air compensation port 26 are provided on the side of the incinerator 24. During operation, the tar tail gas enters the incinerator 24 under the action of the internal pressure of the heating furnace tube 4 and the action of the fan 19. Under the action of the igniter 25 and the air compensation port 26, the tar is fully burned in the incinerator 24 to form high-temperature hot air. The hot air is input into the heating chamber 22 through the hot air duct 6 to continuously supply heat to the heating chamber 22, thereby achieving the purpose of preheating and utilization, and also solving the problem of tail gas tar blockage and heat waste.

[0041] Furthermore, the outer side of the incinerator 24 is wrapped with a second heat-insulating layer 23 to improve the utilization rate of heat energy. The air compensation port 26 is provided with a supplementary fan to supplement the oxygen required for tar incineration and improve the quality of tar incineration.

[0042] like Figure 1 As shown, the cooling assembly 12 includes a spiral cooling pipe 29, a double-layer jacket pipe 30, a liquid discharge pipe 31 and a liquid inlet pipe 32. The spiral cooling pipe 29 is spirally distributed at the tail end of the cooling furnace pipe 10. During the rotation of the cooling furnace pipe 10, the spiral cooling pipe 29 plays a certain spiral pushing role. The double-layer jacket pipe 30 is composed of an inner pipe and an outer pipe. The inner pipe is located inside the outer pipe. The inner pipe and the outer pipe form an annular cavity. The double-layer jacket pipe 30 is welded and fixed to the cooling furnace tail cover 13. The outer pipe of the double-layer jacket pipe 30 is located on the side outside the equipment and connected to the liquid inlet pipe 32. The outer pipe of the double-layer jacket pipe 30 is located on the side inside the equipment and connected to the outer water inlet of the spiral cooling pipe 29. The inner pipe of the double-layer jacket pipe 30 is located on the side outside the equipment and connected to the liquid discharge pipe 31. The inner pipe of the double-layer jacket pipe 30 is located on the side inside the equipment and connected to the central drain port of the spiral cooling pipe 29. The cooling water flows from the liquid inlet pipe 32 into the outer tube of the double-layer jacket pipe 30, and then flows into the spiral cooling pipe 29. The cooling water passes through the spiral cooling pipe 29 to turn over and circulate the material covered on the upper part of the spiral cooling pipe 29 to cool it. This method has a large water cooling contact area, a small amount of water required, and a good cooling effect. The cooling water passing through the spiral cooling pipe 29 enters the inner tube of the double-layer jacket pipe 30, and flows into the drain pipe 31, and flows out through the drain pipe 31.

[0043] Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can use the above disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the spirit and technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solutions of the present invention still fall within the scope of protection of the technical solutions of the present invention.

Claims

1. A sodium battery negative electrode continuous carbonization rotary kiln, characterized in that: include: A heating support seat (1), a heating furnace tube (4), a heating component (5), a waste heat utilization component (7), a cooling furnace tube (10), a cooling support seat (11), a cooling component (12), a feed component and a guide component; The heating furnace tube (4) is rotatably arranged on the heating support seat (1), and the two ends of the heating furnace tube (4) are respectively connected to the heating furnace head cover (3) and the heating furnace tail cover (8) in a dynamic sealing manner. A guide component is arranged in the heating furnace tube (4), and the feed component is arranged on the heating support seat (1), and the output end of the feed component passes through the heating furnace head cover (3) and extends into the heating furnace tube (4). After the material is crushed by the feed component, it is transported to the guide component in the heating furnace tube (4). As the heating furnace tube (4) rotates, the material is evenly turned over and pushed forward in the heating furnace tube (4); the heating component (5) is arranged around the outer periphery of the heating furnace tube (4) to achieve heating and sintering of the material; one end of the waste heat utilization component (7) is connected to the heating component (5), and the other end of the waste heat utilization component (7) passes through the heating furnace tail cover (8) and extends into the heating furnace tube (4), so that the waste heat in the heating furnace tube (4) is input into the heating component (5); The cooling furnace tube (10) is rotatably arranged on the cooling support seat (11), and the two ends of the cooling furnace tube (10) are respectively connected to the cooling furnace head cover (9) and the cooling furnace tail cover (13) in a dynamic sealing manner. The bottom of the heating furnace tail cover (8) is provided with an inclined chute (28), and the output end of the inclined chute (28) passes through the cooling furnace head cover (9) and extends into the cooling furnace tube (10), so as to realize the transportation of the sintered material in the heating furnace tube (4) to the cooling furnace tube (10); the cooling component (12) passes through the cooling furnace tail cover (13) and spirally extends into the cooling furnace tube (10), so as to realize the cooling and temperature reduction of the sintered material.

2. The sodium battery negative electrode continuous carbonization rotary kiln according to claim 1, characterized in that: The feeding assembly comprises a feeder (2), a vibrating base (14) and an inclined feed pipe (16); the vibrating base (14) is arranged on a heating support seat (1), the feeder (2) is arranged on the vibrating base (14), one end of the inclined feed pipe (16) is connected to the output end of the feeder (2), and the other end of the inclined feed pipe (16) passes through the heating furnace head cover (3) and extends into the heating furnace tube (4); after the material is crushed by the feeder (2), it falls into the heating furnace tube (4) through the inclined feed pipe (16).

3. The sodium battery negative electrode continuous carbonization rotary kiln according to claim 2, characterized in that: The feed assembly also includes a pusher (15), which is connected to the output end of the feeder (2) and faces the inclined discharge pipe (16) to push the material in the inclined discharge pipe (16) to fall into the heating furnace tube (4).

4. The sodium battery negative electrode continuous carbonization rotary kiln according to claim 2, characterized in that: The guide assembly comprises a material guide inclined plate (18) and a material baffle plate (20) arranged on the inner wall surface of the heating furnace tube (4); the material guide inclined plate (18) is located at the front end of the heating furnace tube (4) and is connected to the material feed assembly; the material baffle plate (20) is located at the rear end of the material guide inclined plate (18), the material baffle plate (20) is arranged along the axial direction of the heating furnace tube (4), and two adjacent material baffle plates (20) are mutually offset in the axial direction, so as to control the axial displacement of the material in the heating furnace tube (4).

5. The sodium battery negative electrode continuous carbonization rotary kiln according to claim 4, characterized in that: The material guide inclined plates (18) are provided in multiple pieces in a single circle with the same cross section; the material blocking plates (20) are provided in one piece in a single circle with the same cross section, and are alternately staggered in different cross sections.

6. The sodium battery negative electrode continuous carbonization rotary kiln according to claim 4, characterized in that: The heating component (5) comprises a heating chamber (22), the heating furnace tube (4) runs through the heating chamber (22), a heater (33) is provided at the bottom of the heating chamber (22), an air inlet and an air outlet are provided at both sides of the top of the heating chamber (22), the air inlet is connected to the waste heat utilization component (7) through a hot air duct (6), and the air outlet is provided with an exhaust fan (19) to enable the hot air in the waste heat utilization component (7) to flow to the heating chamber (22), so as to preheat the material in the heating furnace tube (4).

7. The sodium battery negative electrode continuous carbonization rotary kiln according to claim 6, characterized in that: The waste heat utilization component (7) comprises an incinerator (24); an upwardly inclined tail gas inlet pipe (27) is provided at the bottom of the incinerator (24); the tail gas inlet pipe (27) passes through the heating furnace tail cover (8) and extends into the heating furnace tube (4); the top of the incinerator (24) is connected to the heating chamber (22) through a hot air duct (6); an igniter (25) and an air compensation port (26) are provided on the side of the incinerator (24); the tar tail gas generated in the heating furnace tube (4) burns in the incinerator (24) to form high-temperature hot air, and the high-temperature hot air is input into the heating chamber (22) through the hot air duct (6).

8. The sodium battery negative electrode continuous carbonization rotary kiln according to claim 7, characterized in that: The outside of the heating furnace tube (4) is wrapped with a first thermal insulation layer (21), the outside of the incinerator (24) is wrapped with a second thermal insulation layer (23), and the air compensation port (26) is provided with a supplementary air fan.

9. The sodium battery negative electrode continuous carbonization rotary kiln according to any one of claims 1 to 8, characterized in that: The cooling assembly (12) comprises a spiral cooling pipe (29), a double-layer jacket pipe (30), a liquid discharge pipe (31) and a liquid inlet pipe (32); the spiral cooling pipe (29) is spirally distributed at the inner tail end of the cooling furnace pipe (10), the double-layer jacket pipe (30) passes through the cooling furnace tail cover (13), the two ends of the inner pipe of the double-layer jacket pipe (30) are respectively connected to the liquid outlet and the liquid discharge pipe (31) of the spiral cooling pipe (29), and the two ends of the outer pipe of the double-layer jacket pipe (30) are connected to the liquid inlet and the liquid inlet pipe (32) of the spiral cooling pipe (29).

10. The sodium battery negative electrode continuous carbonization rotary kiln according to any one of claims 1 to 8, characterized in that: The heating furnace tube (4) and the cooling furnace tube (10) are both arranged at an inclination.

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