Lithium battery negative electrode carbon-based material pitch coke pyrolysis device

Abstract

The utility model relates to the technical field of lithium batteries, in particular to a lithium battery negative electrode carbon-based material pitch coke pyrolysis device which comprises a base plate, a supporting plate is fixedly arranged at the position, close to the left end, of the upper surface of the base plate, and a pyrolysis cylinder is rotationally arranged at the top of the supporting plate through a rotating frame; a switch box is fixedly arranged at the left end of the top of the outer side of the pyrolysis cylinder, the top of the switch box communicates with a heating power supply through a connecting wire, the middle of the heating power supply sleeves the outer side of the pyrolysis cylinder, and the right side of the heating power supply communicates with a heating wire through a connecting wire. By arranging the pyrolysis cylinder, the sleeve, the gas filling pipe, the pressure pump and the like, high-pressure gas is sprayed into the pyrolysis cylinder through the gas filling pipe under the action of the pressure pump, so that a small amount of pitch coke in the pyrolysis cylinder is blown out through the high-pressure gas, and the pitch coke after pyrolysis is prevented from remaining in the pyrolysis cylinder; and subsequent pyrolysis work is prevented from being influenced, and the work investment of manually cleaning the interior of the pyrolysis barrel is reduced.

Description

Technical Field

[0001] This application relates to the technical field of lithium batteries, and in particular to a device for pyrolysis of pitch coke, a carbon-based material for lithium battery negative electrodes. Background Technology

[0002] The carbon-based materials for lithium-ion battery anodes mainly include graphite, amorphous carbon, carbon nanotubes, and graphene. Hard carbon refers to amorphous carbon that is difficult to graphitize at high temperatures. It is usually prepared by high-temperature pyrolysis of polymers or biomass materials with special structures. Coal-based pitch coke is a solid residue obtained after high-temperature dry distillation or delayed coking of coal pitch. It is a low-sulfur, low-ash coke produced by directly coking coal pitch (medium-temperature pitch or hard pitch) in a coking oven or by using delayed coking. During the pyrolysis process of carbon-based materials, after the internal pyrolysis of the pyrolysis cylinder is completed, a large amount of residue remains on the inner wall. Due to the closed state of the pyrolysis cylinder, it is difficult to clean, which affects the continuous pyrolysis work of the subsequent pyrolysis cylinder. Furthermore, due to the influence of the working environment during the pyrolysis process, it is not easy to remove the pyrolyzed pitch coke, which delays the pyrolysis process of the pitch coke. Utility Model Content

[0003] To address the problems mentioned in the background art, this application provides a device for pyrolyzing pitch coke, a carbon-based material for lithium battery anodes.

[0004] This application provides a lithium battery negative electrode carbon-based material pitch coke pyrolysis device, which adopts the following technical solution: it includes a base plate, a support plate is fixedly installed on the upper surface of the base plate near the left end, a pyrolysis cylinder is rotatably installed on the top of the support plate via a rotating frame, a switch box is fixedly installed on the left end of the top of the outer side of the pyrolysis cylinder, a heating power supply is connected to the top of the switch box via a connecting line, the middle part of the heating power supply is sleeved on the outer side of the pyrolysis cylinder, a heating wire is connected to the right side of the heating power supply via a connecting line, the middle part of the heating wire is sleeved on the outer side of the middle part of the pyrolysis cylinder, a pad is fixedly installed on the right end of the outer side of the pyrolysis cylinder, a pressure pump is fixedly installed on the top of the pad, an air filling pipe is fixedly installed on one side of the pressure pump, a sleeve is connected to the end of the air filling pipe away from the pressure pump, and the middle part of the sleeve is fixedly sleeved on the outer side of the right end of the pyrolysis cylinder.

[0005] A vertical plate is fixedly installed in the middle of the upper surface of the base plate. A hydraulic telescopic rod is fixedly installed on the right side of the vertical plate near the bottom. A power inclined rod is rotatably installed at the end of the hydraulic telescopic rod away from the vertical plate. The top of the power inclined rod is rotatably installed in the middle of the outside of the pyrolysis cylinder via a rotating frame.

[0006] Optionally, a discharge slide plate is fixedly installed at the middle of the left end of the upper surface of the base plate. The top of the discharge slide plate is lower than the lower surface of the pyrolysis cylinder. The discharge slide plate is aligned with the discharge port at the left end of the pyrolysis cylinder. A vertical plate is fixedly installed at the middle of the right end of the base plate. The top of the vertical plate slides in contact with the bottom of the outer side of the pyrolysis cylinder.

[0007] Optionally, multiple identical nozzles are evenly arranged on one side of the sleeve, with the end of the nozzle away from the sleeve extending into the interior of the pyrolysis cylinder and being fixedly inserted into the outer side of the pyrolysis cylinder.

[0008] Optionally, a movable plate is fixedly installed on the outer side of the end of the power inclined rod away from the pyrolysis cylinder. The end of the movable plate away from the power inclined rod is slidably sleeved on the outer side of one end of the limiting crossbar. The left end of the inclined rod is fixedly installed on one side of the bottom of the vertical plate.

[0009] Optionally, a feeding port is fixedly provided at the top of the right end of the pyrolysis cylinder, a feeding plate is slidably provided on the outside of the feeding port, an auger shaft is rotatably provided in the middle of the pyrolysis cylinder, the right end of the auger shaft extends to the outside of the pyrolysis cylinder and a motor is fixedly provided thereon, and the outside of the motor is fixedly provided at the right end of the pyrolysis cylinder.

[0010] Optionally, a heating main pipe is connected to the right side of the heating power supply via a power line. The heating main pipe is sleeved on the outside of the pyrolysis cylinder. There are two heating main pipes, both of which are sleeved on the outside of the pyrolysis cylinder. The two heating main pipes are symmetrically arranged on both sides of the heating wire and are both connected to the heating wire.

[0011] In summary, this application includes the following beneficial technical effects:

[0012] 1. This utility model, by setting up components such as a pyrolysis cylinder, a sleeve, an air filling pipe, and a pressure pump, uses the pressure pump to spray high-pressure gas into the interior of the pyrolysis cylinder through the air filling pipe. This achieves the effect of blowing out a small amount of asphalt coke inside the pyrolysis cylinder through the high-pressure gas, avoiding the residue of asphalt coke after pyrolysis remaining inside, preventing it from affecting subsequent pyrolysis work, and reducing the manual labor input for cleaning the interior of the pyrolysis cylinder.

[0013] 2. This utility model incorporates components such as a hydraulic telescopic rod and a power inclined rod. The retraction of the hydraulic telescopic rod moves the bottom of the power inclined rod, lifting the right end of the pyrolysis cylinder. This facilitates the discharge of the pyrolyzed asphalt coke, reducing manual contact with the high-temperature pyrolysis cylinder and maximizing operator protection. Furthermore, the internal auger shaft keeps the asphalt coke in motion during pyrolysis, preventing its accumulation and quickly moving it to the discharge port on the left for easy unloading. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the overall three-dimensional structure of the front in an embodiment of this application;

[0015] Figure 2 This is a schematic diagram of the front structure in an embodiment of this application;

[0016] Figure 3 This is a schematic diagram of the three-dimensional cross-sectional structure of the pyrolysis cylinder in an embodiment of this application;

[0017] Figure 4 This is a schematic diagram of the three-dimensional structure of the sleeve in an embodiment of this application.

[0018] Reference numerals: 1. Base plate; 2. Nozzle; 3. Pyrolysis cylinder; 4. Motor; 5. Feed plate; 6. Pressure pump; 7. Sleeve; 8. Heating wire; 9. Main heating pipe; 10. Heating power supply; 11. Switch box; 12. Discharge slide plate; 13. Support plate; 14. Vertical plate; 15. Hydraulic telescopic rod; 16. Limiting crossbar; 17. Power diagonal rod; 18. Moving plate; 19. Pad plate; 20. Air inflator; 21. Screw shaft. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0020] This application discloses a device for pyrolysis of pitch coke, a carbon-based material for lithium-ion battery anodes. For example... Figure 1 As shown, the device includes a base plate 1. A discharge slide plate 12 is fixedly installed in the middle of the left end of the upper surface of the base plate 1. The discharge slide plate 12 is positioned at the discharge port to prevent the asphalt coke from flowing to other locations when discharged, and to facilitate collection. The top of the discharge slide plate 12 is lower than the lower surface of the pyrolysis cylinder 3. The discharge slide plate 12 is aligned with the discharge port at the left end of the pyrolysis cylinder 3. A vertical plate is fixedly installed in the middle of the right end of the base plate 1. The top of the vertical plate slides in contact with the bottom of the outer side of the pyrolysis cylinder 3. The vertical plate supports the bottom of the pyrolysis cylinder 3, preventing the pyrolysis cylinder 3 from moving downwards excessively.

[0021] A support plate 13 is fixedly installed on the upper surface of the base plate 1 near the left end. A pyrolysis cylinder 3 is rotatably mounted on the top of the support plate 13 via a rotating frame. A feed port is fixedly installed on the top right end of the pyrolysis cylinder 3 to facilitate the outflow of the pyrolyzed asphalt coke. A feed plate 5 is slidably mounted on the outside of the feed port. An auger shaft 21 is rotatably mounted in the middle of the pyrolysis cylinder 3. The auger shaft 21 transports the asphalt coke inside to one end. The right end of the auger shaft 21 extends to the outside of the pyrolysis cylinder 3 and is fixedly mounted on a motor 4. The motor 4 provides power to the auger shaft 21 inside. The outside of the motor 4 is fixedly mounted on the right end of the pyrolysis cylinder 3.

[0022] A switch box 11 is fixedly installed at the left end of the top of the pyrolysis cylinder 3. A heating power supply 10 is connected to the top of the switch box 11 via a connecting line. A heating main pipe 9 is connected to the right side of the heating power supply 10 via a power line. The heating main pipe 9 is sleeved on the outside of the pyrolysis cylinder 3. There are two heating main pipes 9. Both heating main pipes 9 are sleeved on the outside of the pyrolysis cylinder 3. The two heating main pipes 9 are symmetrically arranged on both sides of the heating wire 8 and are connected to the heating wire 8. The two heating main pipes 9 and the heating wire 8 are connected as a whole. The heating main pipes 9 provide power to the heating wire 8, and the heating wire 8 provides heat to the outside of the pyrolysis cylinder 3.

[0023] The middle part of the heating power supply 10 is sleeved on the outside of the pyrolysis cylinder 3. The right side of the heating power supply 10 is connected to the heating wire 8 through a connecting wire. The middle part of the heating wire 8 is sleeved on the outside of the middle part of the pyrolysis cylinder 3. A pad 19 is fixedly installed on the right end of the outside of the pyrolysis cylinder 3. A pressure pump 6 is fixedly installed on the top of the pad 19. An air filling pipe 20 is fixedly installed on one side of the pressure pump 6. The end of the air filling pipe 20 away from the pressure pump 6 is connected to a sleeve 7. Multiple identical nozzles 2 are evenly arranged on one side of the sleeve 7. The end of the nozzle 2 away from the sleeve 7 extends into the inside of the pyrolysis cylinder 3 and is fixedly inserted into the outside of the pyrolysis cylinder 3. Multiple nozzles 2 are evenly arranged on the outside of the pyrolysis cylinder 3. The nozzles 2 spray high-pressure gas into one end of the inside of the pyrolysis cylinder 3 and spray it evenly to prevent residual asphalt coke inside. The middle part of the sleeve 7 is fixedly sleeved on the outside of the right end of the pyrolysis cylinder 3.

[0024] A vertical plate 14 is fixedly installed in the middle of the upper surface of the base plate 1. A hydraulic telescopic rod 15 is fixedly installed on the right side of the vertical plate 14 near the bottom. A power inclined rod 17 is rotatably installed at the end of the hydraulic telescopic rod 15 away from the vertical plate 14. A movable plate 18 is fixedly installed on the outer side of the end of the power inclined rod 17 away from the pyrolysis cylinder 3. The end of the movable plate 18 away from the power inclined rod 17 is slidably sleeved on the outer side of one end of the limiting crossbar 16. The left end of the inclined rod is fixedly installed on one side of the bottom of the vertical plate 14. The power inclined rod 17 moves left and right under the action of the hydraulic telescopic rod 15. The power inclined rod 17 drives the movable plate 18 to slide on the outer side of the limiting crossbar 16. The limiting crossbar 16 limits the power inclined rod 17 and ensures that it can slide stably. The top of the power inclined rod 17 is rotatably installed in the middle of the outer side of the pyrolysis cylinder 3 through a rotating frame.

[0025] The implementation principle of the lithium battery negative electrode carbon-based material pitch coke pyrolysis device in this application embodiment is as follows: During use, the carbon-based material pitch coke to be pyrolyzed is fed into the pyrolysis cylinder 3 through the feeding plate 5. The heating power supply 10 is controlled by the switch box 11. The resistance wire inside the heating main pipe 9 generates heat under the control of the power supply. By reasonably controlling the pyrolysis conditions, the pitch coke inside undergoes pyrolysis. At this time, the auger shaft 21 is driven by the motor 4 to rotate, and the auger shaft 21 drives the pitch coke inside to rotate, making the heating more uniform. The pyrolysis is completed. Then, the auger shaft 21 transfers the completed asphalt coke to the left end of the pyrolysis cylinder 3. At the same time, the movement of the hydraulic telescopic rod 15 causes the bottom of the power inclined rod 17 to move to the left, and the top of the power inclined rod 17 pushes the right end of the pyrolysis cylinder 3 upward, so that the pyrolysis cylinder 3 is in an inclined state, which facilitates the outflow of the asphalt coke inside. When asphalt coke remains inside, the pressure pump 6 is started to inject high-pressure gas through the air filling pipe 20. The gas is then sprayed into the pyrolysis cylinder 3 through the surrounding nozzles 2, which successfully blows off the asphalt coke adhering to the inner wall of the pyrolysis cylinder 3, making it easy to completely discharge.

[0026] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pyrolysis device for pitch coke of carbon-based material for negative electrode of lithium battery comprising a base plate (1), characterized in that: The upper surface of the base plate (1) is fixedly provided with a support plate (13) near the left end, and the top of the support plate (13) is rotatably provided with a pyrolysis cylinder (3) through a rotating frame, and the left end of the top of the pyrolysis cylinder (3) is fixedly provided with a switch box (11), and the top of the switch box (11) is communicated with a heating power supply (10) through a connecting line, and the middle part of the heating power supply (10) is sleeved on the outside of the pyrolysis cylinder (3), and the right side of the heating power supply (10) is communicated with a heating wire (8) through a connecting line, and the middle part of the heating wire (8) is sleeved on the outside of the middle part of the pyrolysis cylinder (3), and the right end of the outside of the pyrolysis cylinder (3) is fixedly provided with a backing plate (19), and the top of the backing plate (19) is fixedly provided with a pressure pump (6), and one side of the pressure pump (6) is fixedly provided with an inflation pipe (20), and one end of the inflation pipe (20) away from the pressure pump (6) is communicated with a sleeve pipe (7), and the middle part of the sleeve pipe (7) is fixedly sleeved on the outside of the right end of the pyrolysis cylinder (3). The upper surface of the base plate (1) is fixedly provided with a vertical plate (14), and the right side of the vertical plate (14) is fixedly provided with a hydraulic telescopic rod (15) near the bottom, and one end of the hydraulic telescopic rod (15) away from the vertical plate (14) is rotatably provided with a power inclined rod (17), and the top of the power inclined rod (17) is rotatably arranged on the middle part of the outside of the pyrolysis cylinder (3) through a rotating frame.

2. The device according to claim 1, wherein the device is characterized by: The left end of the upper surface of the base plate (1) is fixedly provided with a discharging slide plate (12), and the top of the discharging slide plate (12) is lower than the position of the lower surface of the pyrolysis cylinder (3), and the discharging slide plate (12) is arranged on the same straight line with the discharging port of the left end of the pyrolysis cylinder (3), and the middle part of the right end of the base plate (1) is fixedly provided with a vertical plate, and the top of the vertical plate is in sliding contact with the bottom of the outside of the pyrolysis cylinder (3).

3. The device according to claim 1, wherein the device is characterized by: The sleeve pipe (7) is uniformly provided with a plurality of same spray pipes (2) on one side, and one end of the spray pipe (2) away from the sleeve pipe (7) extends into the pyrolysis cylinder (3) and is fixedly inserted into the outside of the pyrolysis cylinder (3).

4. The device according to claim 1, wherein the device is characterized by: The outside of one end of the power inclined rod (17) away from the pyrolysis cylinder (3) is fixedly provided with a moving plate (18), one end of the moving plate (18) away from the power inclined rod (17) is slidably sleeved on the outside of one end of the limiting horizontal rod (16), and the left end of the inclined rod is fixedly arranged on one side of the bottom of the vertical plate (14).

5. The device according to claim 1, wherein the device is characterized by: The top of the right end of the pyrolysis cylinder (3) is fixedly provided with a discharging port, and the outside of the discharging port is slidably provided with a discharging plate (5), and the middle part of the pyrolysis cylinder (3) is rotatably provided with an auger shaft (21), and the right end of the auger shaft (21) extends to the outside of the pyrolysis cylinder (3) and is fixedly provided with a motor (4), and the outside of the motor (4) is fixedly arranged on the right end of the pyrolysis cylinder (3).

6. The device according to claim 1, wherein the device is characterized by: The right side of the heating power supply (10) is communicated with a heating main pipe (9) through a power line, and the heating main pipe (9) is sleeved on the outside of the pyrolysis cylinder (3), and the number of the heating main pipe (9) is two, and the two heating main pipes (9) are sleeved on the outside of the pyrolysis cylinder (3), and the two heating main pipes (9) are symmetrically arranged on both sides of the heating wire (8) and are communicated with the heating wire (8).

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