Method for preparing carbon material from battery separator waste, applications and apparatus

Abstract

The application provides a battery diaphragm waste preparation carbon material method, application and equipment, relates to the field of carbon material preparation.The battery diaphragm waste preparation carbon material method comprises the following steps: S1, discharging, disassembling, peeling, crushing and screening waste batteries to obtain a diaphragm;S2, mixing urea and the diaphragm according to a mass ratio of 4:1, grinding to obtain a mixture;S3, placing the mixture in a tube furnace, gradient doping, heating under a certain atmosphere at a temperature of 200-300 DEG C for 20-40 min, heating at 360-4000 DEG C for 10-20 min, and heating again at 550-650 DEG C for 50-70 min to obtain a pyrolytic carbon material.The battery diaphragm waste preparation carbon material method provided by the application uses waste battery diaphragm and urea as raw materials, has a simple preparation process, low cost, realizes simultaneous completion of carbonization and nitrogen and oxygen doping, does not need additional solvent or complex pretreatment, has a waste utilization rate of 100%, and reduces plastic pollution from the source.

Description

Technical Field

[0001] This invention relates to the field of carbon material preparation, and in particular to a method, application, and equipment for preparing carbon materials from battery separator waste. Background Technology

[0002] With the rapid development of the global battery industry, environmental management and resource recycling of waste batteries have become urgent needs. As an important component of batteries, battery separators are mainly composed of polyolefin plastics such as polyethylene (PE) and polypropylene (PP). They have high thermal stability and strong carbon-carbon bonds, and are easily decomposed into volatile hydrocarbon molecules by direct pyrolysis, making it difficult to achieve efficient resource utilization.

[0003] Existing research focuses on the recycling of electrode materials and electrolytes, while the recycling of battery separators is still in the experimental stage and faces problems such as high energy consumption, low separation efficiency, and limited generation of added value products.

[0004] Therefore, it is necessary to provide a method, application, and equipment for preparing carbon materials from battery separator waste to solve the above-mentioned technical problems. Summary of the Invention

[0005] This invention provides a method for preparing carbon materials from waste battery separators, which solves the problem that there is still room for improvement in the recycling of battery separators from waste batteries.

[0006] To solve the above-mentioned technical problems, the present invention provides a method for preparing carbon materials from battery separator waste, comprising the following steps:

[0007] S1. Discharge, disassemble, peel, crush, and sieve the waste batteries to obtain a separator;

[0008] S2. Mix urea and diaphragm at a mass ratio of 4:1, grind them, and obtain a mixture.

[0009] S3. Place the mixture in a tube furnace, perform gradient doping, and heat it at 200-300℃ for 20-40 min under a certain atmosphere, then at 360-4000℃ for 10-20 min, and then at 550-650℃ for 50-70 min to obtain pyrolytic carbon material.

[0010] S4. Immerse the pyrolytic carbon material in a 0.8-1.2 mol / L potassium hydroxide solution, stir for 20-40 min to activate it, seal and let it stand, separate, wash and dry to obtain nitrogen-oxygen co-doped porous carbon material.

[0011] In step S3, the mixture is heated at 240°C for 30 minutes under a nitrogen atmosphere at a flow rate of 30-60 mL / min.

[0012] This invention also provides an application of a nitrogen-oxygen co-doped porous carbon material prepared using the aforementioned method for preparing carbon materials from battery separator waste, comprising the following steps:

[0013] S41. Mix nitrogen-oxygen co-doped porous carbon material with 5 mol / L methylene blue solution, shake for 0.5-1.5 h, filter, and obtain methylene blue adsorbed saturated carbon material;

[0014] S42. Place the methylene blue-adsorbed saturated carbon material in a reactor. The reactor is equipped with a near-infrared laser head and an ultrasonic probe. Add a preset volume of deionized water, turn on the laser with a wavelength of 808nm and a light intensity of 2W / cm² and the ultrasonic wave with a power of 100W, introduce low-temperature nitrogen gas, and desorb for 50-70 minutes to obtain the desorbed carbon material.

[0015] S43. The desorbed carbon material is repeatedly washed with ethanol and deionized water, and then dried to obtain the regenerated adsorbent, namely the regenerated nitrogen-oxygen co-doped porous carbon material.

[0016] The present invention also provides an apparatus for preparing carbon materials from battery separator waste, and a method for preparing carbon materials from the aforementioned battery separator waste, comprising:

[0017] A conveying device, comprising a mounting frame and a conveying roller structure, wherein the conveying roller structure is mounted on the mounting frame and an operating cavity is provided through the middle of the conveying roller structure;

[0018] A cutting assembly, comprising a support, a cutting device, and a moving device, wherein the cutting device is mounted on the support, and the moving device is used to drive the support to move along the setting direction of the conveying device;

[0019] A lifting device is provided below the operating cavity;

[0020] A rotating platform, which is installed at the output end of the lifting device;

[0021] A clamping device is suspended above the operating chamber and is used to clamp the waste batteries to be cut.

[0022] Preferably, the conveying device further includes two conveyor belts, which are installed at intervals on the conveying roller structure and located on both sides of the operating cavity.

[0023] Preferably, the rotary table includes a rotary motor, a rotary shaft, and a support. The rotary motor is installed at the output end of the lifting device, and the support is installed on the output shaft of the rotary motor via the rotary shaft.

[0024] Preferably, the moving device includes a support rod, a slider, and a toothed plate. The support rod is horizontally mounted on the mounting frame via an assembly plate. The slider is sleeved on the support rod. The toothed plate is mounted on the slider, with the teeth of the toothed plate facing the rotation axis. The bracket is mounted on the slider.

[0025] The rotary table also includes a gear mounted on the rotary shaft. When the lifting device lowers the rotary table to a preset height, the support is lower than the conveying surface of the conveying device, and the gear meshes with the toothed plate.

[0026] Preferably, the lifting device includes a lifting cylinder and a mounting frame, the lifting cylinder is mounted on the mounting frame, the mounting frame is mounted on the output end of the lifting cylinder, and the rotary motor is mounted inside the mounting frame.

[0027] Preferably, the lifting device further includes a positioning shaft, which is vertically mounted on the mounting frame via a mounting plate. Positioning holes are provided at both ends of the toothed plate, wherein one of the positioning holes is aligned with the positioning shaft.

[0028] Preferably, the equipment for preparing carbon materials from battery separator waste further includes a collection box, which is disposed below the support rods. There are two support rods, which are spaced apart.

[0029] Compared with related technologies, the method, application, and equipment for preparing carbon materials from battery separator waste provided by this invention have the following beneficial effects:

[0030] This invention provides a method for preparing carbon materials from waste battery separators. Using waste battery separators and urea as raw materials, the preparation process is simple and low-cost. It achieves simultaneous carbonization and nitrogen-oxygen doping without the need for additional solvents or complex pretreatment. The waste utilization rate reaches 100%, reducing plastic pollution from the source.

[0031] Nitrogen-oxygen co-doped carbon materials possess abundant C=O / C=N and CN / CO bonds, enhancing their surface polarity and hydrophilicity. This significantly improves their adsorption capacity for dyes such as methylene blue, resulting in an adsorption capacity 2-3 times higher than that of traditional activated carbon. Based on one-step pyrolysis, a two-stage pyrolysis process is introduced to promote uniform doping of nitrogen and oxygen elements, thereby increasing the surface active sites and chemical activity of the carbon material.

[0032] Photothermal local heating and ultrasonic cavitation stripping achieve a desorption rate of 98% (multiple cycles) and reduce energy consumption by 40%. Attached Figure Description

[0033] Figure 1 This is a flowchart illustrating the steps of the method for preparing carbon materials from battery separator waste provided by the present invention.

[0034] Figure 2 A flowchart of steps for applying nitrogen-oxygen co-doped porous carbon materials provided by the present invention;

[0035] Figure 3 A schematic diagram of the equipment for preparing carbon materials from battery separator waste provided by the present invention;

[0036] Figure 4 for Figure 3 A schematic diagram of the equipment for preparing carbon materials from battery separator waste, shown from another perspective;

[0037] Figure 5 for Figure 4 A partial structural schematic diagram of the equipment used to prepare carbon materials from battery separator waste is shown.

[0038] Figure 6 A schematic diagram of the assembly of the lifting device and the rotary table provided by the present invention;

[0039] Figure 7 A schematic diagram of waste batteries located on a conveying device provided by the present invention;

[0040] Figure 8 The present invention provides schematic diagrams of different states during the cutting process of waste batteries, wherein... Figure 8 (a) A schematic diagram showing the waste battery being prepared for cutting on a pressing and conveying device. Figure 8 (b) is a schematic diagram of the lifting device raising the rotating platform to lift the waste battery and rotating the waste battery to switch the cutting position.

[0041] Numbering on the map:

[0042] 1. Conveying device; 11. Mounting frame; 12. Conveying roller structure; 13. Conveying belt; 101. Operating chamber;

[0043] 2. Cutting assembly; 21. Support; 22. Cutting device; 23. Moving device;

[0044] 231. Support rod; 232. Slider; 233. Gear plate; 234. Positioning hole;

[0045] 3. Lifting device; 31. Lifting cylinder; 32. Mounting frame; 33. Slide rod; 34. Positioning shaft;

[0046] 4. Rotary table; 41. Rotary motor; 42. Rotary shaft; 43. Support; 44. Gear;

[0047] 5. Clamping device; 51. Fixing frame; 52. Lowering cylinder; 53. Pressure plate;

[0048] 6. Collection box;

[0049] 7. Used batteries. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0051] This invention provides a method, application, and equipment for preparing carbon materials from battery separator waste.

[0052] Please refer to the following: Figure 1 In one embodiment of the present invention, the method for preparing carbon materials from battery separator waste includes the following steps:

[0053] S1. Discharge, disassemble, peel, crush, and sieve the waste batteries to obtain a separator;

[0054] S2. Mix urea and diaphragm at a mass ratio of 4:1, grind them, and obtain a mixture.

[0055] S3. Place the mixture in a tube furnace, perform gradient doping, and heat it at 200-300℃ for 20-40 min under a certain atmosphere, then at 360-4000℃ for 10-20 min, and then at 550-650℃ for 50-70 min to obtain pyrolytic carbon material.

[0056] S4. Immerse the pyrolytic carbon material in a 0.8-1.2 mol / L potassium hydroxide solution, stir for 20-40 min to activate it, seal and let it stand, separate, wash and dry to obtain nitrogen-oxygen co-doped porous carbon material.

[0057] In step S3, the mixture is heated at 240°C for 30 minutes under a nitrogen atmosphere at a flow rate of 30-60 mL / min.

[0058] Using waste battery separators and urea as raw materials, the preparation process is simple and low-cost, achieving simultaneous carbonization and nitrogen-oxygen doping without the need for additional solvents or complex pretreatment, and achieving 100% waste utilization, thus reducing plastic pollution at the source.

[0059] As a preferred embodiment of this invention, specifically:

[0060] The waste batteries are discharged, disassembled, peeled, crushed, and sieved to obtain a separator.

[0061] Urea and diaphragm were mixed at a mass ratio of 4:1 and then ground to obtain a mixture.

[0062] The mixture was placed in a tube furnace and gradient doped. It was heated at 240°C for 30 min, 380°C for 15 min, and then at 600°C for 60 min under a nitrogen atmosphere of 50 mL / min to obtain pyrolytic carbon material.

[0063] The pyrolytic carbon material was immersed in 30 mL of 1 M potassium hydroxide solution and stirred for 30 min to activate it. After being sealed and allowed to stand for 12 h, it was separated, washed, and dried to obtain nitrogen-oxygen co-doped porous carbon material.

[0064] The application of nitrogen-oxygen co-doped porous carbon materials in this invention includes their use in the field of supercapacitors or as negative electrode materials for batteries;

[0065] The present invention also provides an application of a nitrogen-oxygen co-doped porous carbon material prepared by the method for preparing carbon materials from battery separator waste, comprising the following steps:

[0066] S41. Mix nitrogen-oxygen co-doped porous carbon material with 5 mol / L methylene blue solution, shake for 0.5-1.5 h, filter, and obtain methylene blue adsorbed saturated carbon material;

[0067] S42. Place the methylene blue-adsorbed saturated carbon material in a reactor. The reactor is equipped with a near-infrared laser head and an ultrasonic probe. Add a preset volume of deionized water, turn on the laser with a wavelength of 808nm and a light intensity of 2W / cm² and the ultrasonic wave with a power of 100W, introduce low-temperature nitrogen gas, and desorb for 50-70 minutes to obtain the desorbed carbon material.

[0068] S43. The desorbed carbon material is repeatedly washed with ethanol and deionized water, and then dried to obtain the regenerated adsorbent, namely the regenerated nitrogen-oxygen co-doped porous carbon material.

[0069] Nitrogen-oxygen co-doped carbon materials possess abundant C=O / C=N and CN / CO bonds, enhancing their surface polarity and hydrophilicity. This significantly improves their adsorption capacity for dyes such as methylene blue, resulting in an adsorption capacity 2-3 times higher than that of traditional activated carbon. Based on one-step pyrolysis, a two-stage pyrolysis process is introduced to promote uniform doping of nitrogen and oxygen elements, thereby increasing the surface active sites and chemical activity of the carbon material.

[0070] Photothermal local heating and ultrasonic cavitation stripping achieve a desorption rate of 98% (multiple cycles) and reduce energy consumption by 40%.

[0071] As an optional approach in this embodiment, specifically:

[0072] Nitrogen-oxygen co-doped porous carbon material was mixed with 5M methylene blue solution, shaken for 1 hour, and filtered to obtain methylene blue adsorbed saturated carbon material.

[0073] The methylene blue-adsorbed saturated carbon material was placed in a reactor with a built-in near-infrared laser head and an ultrasonic probe. 50 mL of deionized water was added, and the laser with a wavelength of 808 nm and a light intensity of 2 W / cm² and the ultrasonic probe with a power of 100 W were turned on. Low-temperature nitrogen gas was introduced, and desorption was carried out for 60 min to obtain the desorbed carbon material.

[0074] The desorbed carbon material was washed three times with ethanol and deionized water and dried at 60°C to obtain the regenerated adsorbent (nitrogen-oxygen co-doped porous carbon material).

[0075] The present invention also provides an apparatus for preparing carbon materials from battery separator waste, and a method for preparing carbon materials from the aforementioned battery separator waste, comprising:

[0076] The conveying device 1 includes a mounting frame 11 and a conveying roller structure 12. The conveying roller structure 12 is mounted on the mounting frame 11, and an operating cavity 101 is provided through the middle of the conveying roller structure 12.

[0077] The cutting assembly 2 includes a support 21, a cutting device 22, and a moving device 23. The cutting device 22 is mounted on the support 21, and the moving device 23 is used to drive the support 21 to move along the setting direction of the conveying device 1.

[0078] Lifting device 3, which is located below the operating cavity 101;

[0079] Rotary table 4, which is installed at the output end of the lifting device 3;

[0080] A clamping device 5 is suspended above the operating chamber 101 and is used to clamp the waste battery 7 to be cut.

[0081] In this embodiment, the equipment for preparing carbon materials from waste battery separators is used to cut the casing of the waste battery 7 in step S1 to dismantle the waste battery 7; this equipment is mainly used to cut square batteries; after the square battery is placed on the conveying device 1, its longer ends extend outside the conveying device 1, which makes it easier for the cutting device 22 to cut the ends of the waste battery 7 casing.

[0082] The cutting device 22 includes a drive motor, an assembly frame, a cover, and a cutting blade. The drive motor is mounted on the bracket 21 via the assembly frame, and the cover is mounted on the assembly frame via a connecting shaft. The bottom of the cover is open. The cutting blade is detachably mounted on the output end of the drive motor and is located inside the cover. The bottom end of the cutting blade extends to the outside of the cover through the bottom opening.

[0083] Here, "the moving device 23 is used to drive the support 21 to move along the setting direction of the conveying device 1" does not mean moving along the conveying direction of the conveying device 1, but rather along the setting direction of the conveying device 1, that is, it can move in both the conveying direction and the opposite direction of the conveying device 1.

[0084] After the waste battery 7 is discharged, it is fed to the conveying device 1. The conveying device 1 aligns the waste battery 7 with the position of the operating chamber 101. Then the pressing device 5 presses the waste battery 7, and one end of the waste battery 7 is aligned with the cutting blade of the cutting device 22.

[0085] When the cutting device 22 is working, the moving device 23 drives the cutting device 22 to move towards the waste battery 7, cutting off one end of the waste battery 7's casing. After one end is cut, the clamping device 5 releases the waste battery 7, and the lifting device 3 lifts the rotating table 4. The rotating table 4 interacts with the waste battery 7 and lifts the waste battery 7 to separate it from the conveying device 1. Then, the rotating table 4 drives the waste battery 7 to rotate 180 degrees, aligning the other end of the waste battery 7 with the cutting blade of the cutting device 22. Similarly, the cutting component 2 is used to cut the other end of the waste battery 7. After cutting, the rotating table 4 rotates the waste battery 7 so that both cut ends are aligned with the conveying direction of the conveying device 1. Then, the lifting device 3 lowers the rotating table 4, causing the waste battery 7 to fall onto the conveying device 1. The rotating table 4 separates from the waste battery 7, and the conveying device 1 transports the waste battery 7 to the next station.

[0086] By opening an operating cavity 101 on the conveying device 1, and cooperating with the cutting component 2, the rotary table 4, the lifting device 3 and the pressing device 5, multiple positions of the waste battery 7 can be cut. After cutting, the waste battery 7 can be directly placed on the conveying device 1 and transported to the next work station for processing without the need for an additional cutting table. After cutting, it is pushed to the conveying equipment and transported to the next work station.

[0087] When the equipment is used in a production line, the two ends of the casing of the waste battery 7 are cut as described above, and then the waste battery 7 is adjusted so that the two ends after cutting face the direction of conveying device 1. A pushing structure is set at the rear of the conveying device 1 to push the inner core of the waste battery 7 directly out of the casing and push the core out along the direction of the cut opening.

[0088] When the equipment is not used on the production line, the four sides of the waste battery 7 can be aligned with the cutting device 22 in sequence by adjusting the rotary table 4, and the four sides of the waste battery 7 can be cut by the cutting component 2, so as to facilitate the subsequent removal of the battery cells.

[0089] In this embodiment, the start and stop of the conveying device 1 can be achieved by setting a sensor on the conveying device 1, such as a photoelectric switch or a laser sensor. When the sensor detects the waste battery 7 being conveyed, the waste battery 7 is conveyed to a preset position and the conveying device 1 stops.

[0090] When the waste battery 7 is fed onto the conveyor 1, it is placed in a preset position so that after the subsequent sensor detects that the waste battery 7 has stopped conveying, the center of the waste battery 7 can be aligned with the rotary table 4.

[0091] Alternatively, the delivery time can be set via program settings based on parameters such as the delivery speed of the conveying device 1 and the length of the battery.

[0092] Please see Figure 3 and Figure 4 As an optional embodiment, the conveying device 1 further includes two conveyor belts 13, which are installed at intervals on the conveying roller structure 12 and located on both sides of the operating cavity 101.

[0093] By setting two conveyor belts 13 on both sides of the operating chamber 101, the two ends of the waste battery 7 are placed on the conveyor belts 13, and the conveyor belts 13 can transport the waste battery 7 more smoothly.

[0094] The conveyor roller structure 12 consists of multiple rollers, which are rotated at intervals on the mounting frame 11. By setting the conveyor belt 13, only the rollers at both ends of the conveyor roller structure 12 need to drive the conveyor belt 13 to achieve conveying. One of the rollers is connected to the drive equipment, which drives the roller to rotate.

[0095] When the conveyor belt 13 is not installed, the adjacent rollers of the conveyor roller structure 12 are connected in sequence by a transmission component, which can be a belt and pulley, a synchronous pulley and a synchronous belt, etc.

[0096] Two sets of shorter rollers are provided at the position corresponding to the operating cavity 101, and are symmetrically installed on the mounting frame 11. The distance between the two sets of shorter rollers forms the operating cavity 101.

[0097] in Figure 3 and Figure 4 The conveying device 1 shown is a part of the overall conveying device 1.

[0098] Please see Figure 5 In this embodiment, the rotating table 4 includes a rotating motor 41, a rotating shaft 42, and a support 43. The rotating motor 41 is installed at the output end of the lifting device 3, and the support 43 is installed on the output shaft of the rotating motor 41 through the rotating shaft 42.

[0099] When the used battery 7 is driven to rotate, the rotating motor 41 drives the support 43 to rotate through the rotating shaft 42, and the support 43 drives the used battery 7 located on it to rotate.

[0100] A rubber pad is provided on the top of the support 43 to increase friction with the waste battery 7 and improve the stability when driving the waste battery 7 to rotate.

[0101] In other embodiments, the rotary table 4 includes an assembly frame, a rotary motor 41, a rotary cylinder, and a support 43. The rotary motor 41 is mounted on the working ground or on the mounting frame 11 via the assembly frame. The rotary cylinder is connected to the output shaft of the rotary motor 41 via a keyway, and a bearing seat is mounted on the rotary cylinder. The bearing seat is connected to the output end of the lifting device 3 via a connecting block. In this case, the lifting device 3 and the rotary table 4 are arranged adjacent to each other.

[0102] As an optional embodiment, the moving device 23 is a belt conveyor, a push cylinder, or a threaded conveyor structure, used to drive the support 21 to move.

[0103] Please see Figure 5 As another optional embodiment, the moving device 23 includes a support rod 231, a slider 232, and a toothed plate 233. The support rod 231 is horizontally mounted on the mounting frame 11 via an assembly plate. The slider 232 is sleeved on the support rod 231. The toothed plate 233 is mounted on the slider 232, and the teeth of the toothed plate 233 face the rotation axis 42. The bracket 21 is mounted on the slider 232.

[0104] The rotary table 4 also includes a gear 44, which is mounted on the rotating shaft 42. When the lifting device 3 lowers the rotary table 4 to a preset height, the support 43 is lower than the conveying surface of the conveying device 1, and the gear 44 meshes with the toothed plate 233.

[0105] When the conveying device 1 conveys a waste battery 7 above the operating chamber 101, the support 43 in the rotating table 4 is below the waste battery 7. At this time, the gear 44 meshes with the toothed plate 233. The rotating table 4 is in the position adjustment state, which is used to drive the cutting device 22 to move and cut the waste battery 7.

[0106] Specifically, such as Figure 8 In (a), the rotary motor 41 drives the rotary shaft 42 to rotate counterclockwise. The rotary shaft 42 drives the gear 44 to rotate. The gear 44 interacts with the toothed plate 233, causing the toothed plate 233 to move to the left. The toothed plate 233 drives the slider 232 to move accordingly. The slider 232 drives the cutting device 22 to move to the left through the bracket 21, cutting one end of the waste battery 7.

[0107] After one end is cut, the lifting device 3 raises the rotating platform 4, and the gear 44 moves upward and separates from the gear plate 233, as shown. Figure 8 In step (b), the rotating table 4 lifts the waste battery 7 and separates it from the conveying device 1. Subsequently, the rotating table 4 drives the waste battery 7 to rotate and adjust the cutting direction. At this time, the rotating table 4 is in a rotating state.

[0108] The lifting device 3 then lowers the rotating table 4 to a preset height, so that the waste battery 7 is placed on the conveying device 1. The rotating table 4 separates from the waste battery 7. At this time, the gear 44 meshes with the toothed plate 233 again, and the waste battery 7 is then cut again or conveyed to the next work station after cutting.

[0109] Thus, the rotary table 4 can sequentially realize the functions of driving the cutting device 22 to move and cut the shell of the waste battery 7, and driving the waste battery 7 to rotate and adjust the cutting position; and during the switching between the two states, the rotary table 4 can be raised and lowered to raise and lower the waste battery 7, thereby facilitating the adjustment of the cutting direction by rotating the battery.

[0110] Among them, the number of teeth on gear 44 is an integer. After each 180-degree rotation, the teeth on gear 44 can be aligned with the tooth grooves on gear plate 233 again.

[0111] Please see Figure 5 and Figure 6 In this embodiment, the lifting device 3 includes a lifting cylinder 31 and a mounting frame 32. The lifting cylinder 31 is mounted on the mounting bracket 11, the mounting frame 32 is mounted on the output end of the lifting cylinder 31, and the rotary motor 41 is mounted inside the mounting frame 32.

[0112] During operation, the lifting cylinder 31 raises or lowers the mounting frame 32, and the mounting frame 32 drives the rotary motor 41 to move accordingly. The rotary motor 41 drives the support 43 to rise or fall through the rotating shaft 42.

[0113] The lifting cylinder 31 can be a pneumatic cylinder, a hydraulic cylinder, or an electric push cylinder.

[0114] The mounting frame 11 has multiple legs at its bottom, and a connecting frame is installed between the legs. The lifting cylinder 31 is installed on the connecting frame.

[0115] Preferably, the lifting device 3 also includes a plurality of slide rods 33, which are mounted on the connecting frame and located on both sides of the lifting cylinder 31. Preferably, two slide rods 33 are provided on each side. Mounting ears are provided on both sides of the mounting frame 32, and the mounting ears are fitted onto the slide rods 33 to form a sliding connection.

[0116] By setting the slide bar 33, the stability of the mounting frame 32 when moving up and down is improved, thereby improving the stability of the rotary table 4 when lifting and lowering.

[0117] In other embodiments, the mounting frame 32 can be replaced with a connecting block and a bearing seat. The bearing seat is mounted on the rotating shaft 42, and the connecting block connects the bearing seat and the lifting cylinder 31. In this case, the rotary motor 41 is mounted on the connecting frame through the assembly frame, and the output shaft of the rotary motor 41 is connected to the inner wall of the rotating shaft 42 via a sliding key.

[0118] Please see Figure 5 and Figure 6 As a preferred embodiment, the lifting device 3 further includes a positioning shaft 34, which is vertically mounted on the mounting frame 32 via a mounting plate. Both ends of the toothed plate 233 are provided with positioning holes 234, wherein one of the positioning holes 234 is aligned with the positioning shaft 34.

[0119] By setting a positioning shaft 34 and opening positioning holes 234 at both ends of the toothed plate 233, the positioning holes 234 are aligned with the positioning shaft 34 in the initial state. After one end of the waste battery 7 is cut, the positioning holes 234 at the other end of the toothed plate 233 are aligned.

[0120] Each time the lifting device 3 lifts the rotating table 4, the gear 44 separates from the toothed plate 233, and the support 43 lifts the waste battery 7 to separate from the conveying device 1, the positioning shaft 34 is inserted into the positioning hole 234, thereby limiting the toothed plate 233, that is, limiting the cutting component 2, to prevent the entire cutting component 2 from shifting, and at the same time ensuring that the toothed plate 233 can remain aligned with the gear 44.

[0121] In this embodiment, one or more positioning holes 234 are provided at each end of the toothed plate 233. Two positioning holes 234 are provided at both ends of the toothed plate 233, and the number of positioning shafts 34 is set accordingly.

[0122] Please see Figure 4 As a preferred embodiment, the equipment for preparing carbon materials from battery separator waste further includes a collection box 6, which is disposed below the support rod 231. There are two support rods 231, which are spaced apart.

[0123] By setting two support rods 231 at intervals, a feeding port is formed between the two support rods 231. After the cutting component 2 cuts one end of the waste battery 7 casing, the cut end casing falls into the collection box 6 through the feeding port for unified collection, which facilitates the subsequent cleaning of the cut casing.

[0124] Please see Figure 4In this embodiment, the pressing device 5 includes a fixed frame 51, a lower pressing cylinder 52 and a pressing plate 53. One end of the fixed frame 51 is mounted on the mounting frame 11, and the other end is suspended above the operating cavity 101. The lower pressing cylinder 52 is mounted on the other end of the mounting frame 11, and the pressing plate 53 is mounted on the output end of the lower pressing cylinder 52 and located above the operating cavity 101.

[0125] The center of the pressure plate 53 is aligned with the center of the support 43.

[0126] In use, the lower cylinder 52 pushes the pressure plate 53 against the top of the used battery 7, as follows: Figure 8 In step (a), the waste battery 7 is pressed onto the conveying device 1.

[0127] The downward cylinder 52 can be a pneumatic cylinder, a hydraulic cylinder, or an electric push cylinder.

[0128] In other embodiments, the pressure plate 53 can be replaced with an inverted U-shaped frame, which is installed at the output end of the lower pressure cylinder 52. In use, the lower pressure cylinder 52 pushes down the inverted U-shaped frame and places it on the uncut ends of the waste battery 7, pressing the waste battery 7 onto the conveying device 1.

[0129] Preferably, the top of the bracket 21 is retractable. The bracket 21 includes an inverted L-shaped frame and a mounting sleeve. The inverted L-shaped frame is mounted on the slider 232, and the mounting sleeve is fitted onto the top of the inverted L-shaped frame. Figure 4 In the cutting device 22, the assembly frame is installed on the mounting sleeve, and the mounting sleeve is threaded with a positioning pin. The top of the inverted L-shaped frame has multiple sets of limiting holes, and the bottom end of the positioning pin is inserted into the limiting hole to limit the mounting sleeve and the inverted L-shaped frame.

[0130] By making the top of the bracket 21 retractable, it can accommodate batteries of different sizes within a certain range.

[0131] The position of each set of limiting holes is set to correspond to multiple standard-sized batteries.

[0132] The working principle of the equipment for preparing carbon materials from battery separator waste provided by this invention is as follows:

[0133] After the waste battery 7 is discharged, it is fed to the conveying device 1. The conveying device 1 aligns the waste battery 7 with the position of the operating chamber 101. Then the pressing device 5 presses the waste battery 7, and one end of the waste battery 7 is aligned with the cutting blade of the cutting device 22.

[0134] The cutting device 22 operates, and the moving device 23 drives the cutting device 22 to move towards the waste battery 7, cutting off one end of the waste battery 7's casing. After one end is cut, the clamping device 5 releases the waste battery 7, and the lifting device 3 lifts the rotating table 4. The rotating table 4 interacts with the waste battery 7 and lifts the waste battery 7 to separate it from the conveying device 1. Then, the rotating table 4 drives the waste battery 7 to rotate 180 degrees, aligning the other end of the waste battery 7 with the cutting blade of the cutting device 22. Similarly, the cutting component 2 is used to cut the other end of the waste battery 7. After cutting, the rotating table 4 rotates the waste battery 7 so that both cut ends are aligned with the conveying direction of the conveying device 1. Then, the lifting device 3 lowers the rotating table 4, causing the waste battery 7 to fall onto the conveying device 1. The rotating table 4 separates from the waste battery 7, and the conveying device 1 transports the waste battery 7 to the next workstation.

[0135] Specifically, when the conveying device 1 conveys a waste battery 7 above the operating chamber 101, the support 43 in the rotating table 4 is below the waste battery 7. At this time, the gear 44 meshes with the toothed plate 233, and the rotating table 4 is in a position adjustment state, which is used to drive the cutting device 22 to move and cut the waste battery 7.

[0136] Specifically, such as Figure 8 In (a), the rotary motor 41 drives the rotary shaft 42 to rotate counterclockwise. The rotary shaft 42 drives the gear 44 to rotate. The gear 44 interacts with the toothed plate 233, causing the toothed plate 233 to move to the left. The toothed plate 233 drives the slider 232 to move accordingly. The slider 232 drives the cutting device 22 to move to the left through the bracket 21, cutting one end of the waste battery 7.

[0137] After one end is cut, the lifting device 3 raises the rotating platform 4, and the gear 44 moves upward and separates from the gear plate 233, as shown. Figure 8 In step (b), the rotating table 4 lifts the waste battery 7 and separates it from the conveying device 1. Subsequently, the rotating table 4 drives the waste battery 7 to rotate and adjust the cutting direction. At this time, the rotating table 4 is in a rotating state.

[0138] The lifting device 3 then lowers the rotating table 4 to a preset height, so that the waste battery 7 is placed on the conveying device 1. The rotating table 4 separates from the waste battery 7. At this time, the gear 44 meshes with the toothed plate 233 again, and the waste battery 7 is then cut again or conveyed to the next work station after cutting.

[0139] Thus, the rotary table 4 can sequentially realize the functions of driving the cutting device 22 to move and cut the shell of the waste battery 7, and driving the waste battery 7 to rotate and adjust the cutting position; and during the switching between the two states, the rotary table 4 can be raised and lowered to raise and lower the waste battery 7, thereby facilitating the adjustment of the cutting direction by rotating the battery.

[0140] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A method for preparing a carbon material from battery separator waste, characterized by, Includes the following steps: S1. Discharge, disassemble, peel, crush, and sieve the waste batteries to obtain a separator; S2. Mix urea and diaphragm at a mass ratio of 4:1, grind them, and obtain a mixture. S3. Place the mixture in a tube furnace, perform gradient doping, and heat it at 200-300℃ for 20-40 min under a certain atmosphere, then at 360-4000℃ for 10-20 min, and then at 550-650℃ for 50-70 min to obtain pyrolytic carbon material. S4. Immerse the pyrolytic carbon material in a 0.8-1.2 mol / L potassium hydroxide solution, stir for 20-40 min to activate it, seal and let it stand, separate, wash and dry to obtain nitrogen-oxygen co-doped porous carbon material.

2. The method of claim 1, wherein the battery separator scrap is a polyolefin-based separator. In step S3, the mixture is heated at 240°C for 30 minutes under a nitrogen atmosphere at a flow rate of 30-60 mL / min.

3. Use of a nitrogen and oxygen co-doped porous carbon material prepared by a method of preparing a carbon material using a battery separator waste according to any one of claims 1-2, characterized in that, Includes the following steps: S41. Mix nitrogen-oxygen co-doped porous carbon material with 5 mol / L methylene blue solution, shake for 0.5-1.5 h, filter, and obtain methylene blue adsorbed saturated carbon material; S42. Place the methylene blue-adsorbed saturated carbon material in a reactor. The reactor is equipped with a near-infrared laser head and an ultrasonic probe. Add a preset volume of deionized water, turn on the laser with a wavelength of 808nm and a light intensity of 2W / cm² and the ultrasonic wave with a power of 100W, introduce low-temperature nitrogen gas, and desorb for 50-70 minutes to obtain the desorbed carbon material. S43. The desorbed carbon material is repeatedly washed with ethanol and deionized water, and then dried to obtain the regenerated adsorbent, namely the regenerated nitrogen-oxygen co-doped porous carbon material.

4. An apparatus for preparing carbon materials from battery separator waste, characterized in that, A method for preparing carbon materials from battery separator waste as described in any one of claims 1-2, comprising: A conveying device, comprising a mounting frame and a conveying roller structure, wherein the conveying roller structure is mounted on the mounting frame and an operating cavity is provided through the middle of the conveying roller structure; A cutting assembly, comprising a support, a cutting device, and a moving device, wherein the cutting device is mounted on the support, and the moving device is used to drive the support to move along the setting direction of the conveying device; A lifting device is provided below the operating cavity; A rotating platform, which is installed at the output end of the lifting device; A clamping device is suspended above the operating chamber and is used to clamp the waste batteries to be cut.

5. The equipment for preparing carbon materials from battery separator waste according to claim 4, characterized in that, The conveying device also includes two conveyor belts, which are installed at intervals on the conveying roller structure and located on both sides of the operating cavity.

6. The equipment for preparing carbon materials from battery separator waste according to claim 5, characterized in that, The rotary table includes a rotary motor, a rotary shaft, and a support. The rotary motor is installed at the output end of the lifting device, and the support is installed on the output shaft of the rotary motor via the rotary shaft.

7. The equipment for preparing carbon materials from battery separator waste according to claim 6, characterized in that, The moving device includes a support rod, a slider, and a toothed plate. The support rod is horizontally mounted on the mounting frame via an assembly plate. The slider is sleeved on the support rod. The toothed plate is mounted on the slider, with the teeth of the toothed plate facing the rotation axis. The bracket is mounted on the slider. The rotary table also includes a gear mounted on the rotary shaft. When the lifting device lowers the rotary table to a preset height, the support is lower than the conveying surface of the conveying device, and the gear meshes with the toothed plate.

8. The equipment for preparing carbon materials from battery separator waste according to claim 7, characterized in that, The lifting device includes a lifting cylinder and a mounting frame. The lifting cylinder is mounted on the mounting frame, the mounting frame is mounted on the output end of the lifting cylinder, and the rotary motor is mounted inside the mounting frame.

9. The equipment for preparing carbon materials from battery separator waste according to claim 8, characterized in that, The lifting device also includes a positioning shaft, which is vertically mounted on the mounting frame via a mounting plate. Positioning holes are provided at both ends of the toothed plate, and one of the positioning holes is aligned with the positioning shaft.

10. The equipment for preparing carbon materials from battery separator waste according to claim 7, characterized in that, The equipment for preparing carbon materials from battery separator waste also includes a collection box, which is located below the support rods. There are two support rods, which are spaced apart.

Images