Oxygen-free carbonization cracking equipment

Abstract

Oxygen-free carbonization cracking equipment comprises a containing cavity, a heating device, a feeding device and a rotary conveying device are arranged in the containing cavity, the heating device heats the containing cavity, the feeding device and the rotary conveying device are sequentially arranged, and the rotary conveying device is arranged in the containing cavity. The rotary conveying device comprises a rotating shaft, connecting rods and a material pushing plate for pushing materials in the direction where the discharging port is located, the multiple connecting rods are arranged, one end of each connecting rod is connected with the rotating shaft, the other end of each connecting rod extends in the direction away from the rotating shaft, and the multiple connecting rods are sequentially arranged in the axis direction; the material pushing plate is arranged at the end, away from the rotating shaft, of the connecting rod, and an included angle is formed between the plane where the material pushing plate is located and the axis of the rotating shaft. According to the anaerobic carbonization cracking equipment, the diaphragm can be completely carbonized and cracked, and the carbonization time can be shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery recycling, in particular to an oxygen-free carbonization cracking device. Background Art

[0002] In recent years, with the rapid rise of the new energy vehicle industry, a large number of waste power batteries will be generated. The recycling of waste lithium batteries can not only solve the environmental pollution caused by battery disposal, but also bring huge economic value, which is of great significance. In the recycling of lithium batteries, the diaphragm between the positive and negative electrodes is an impurity that must be separated.

[0003] Anaerobic pyrolysis is widely used for diaphragm separation after battery crushing because it can separate the diaphragms more thoroughly.

[0004] Anaerobic pyrolysis is to directly use high temperature to carbonize the diaphragm. In the lithium battery recycling production line, the carbonization pyrolysis equipment is generally steel belt furnace and rotary kiln. The material enters the steel belt of the equipment, and the steel belt runs in the furnace for heating and carbonization pyrolysis, with nitrogen protection. However, when the steel belt furnace is used to transport the material, the organic matter in the lithium battery crushing material is not completely carbonized and pyrolyzed because the material is in a static state on the steel belt, and there is a problem of long carbonization time. Utility Model Content

[0005] In view of this, the utility model provides an oxygen-free carbonization and cracking device, which can relatively completely carbonize and crack the diaphragm and can reduce the carbonization time.

[0006] The utility model provides an oxygen-free carbonization cracking device, comprising a accommodating chamber, in which a heating device, a feeding device and a rotating conveying device are arranged, the heating device heats the accommodating chamber, the feeding device and the rotating conveying device are arranged in sequence, the rotating conveying device comprises a rotating shaft, a connecting rod and a pushing plate for pushing materials in the direction of the discharge port, there are multiple connecting rods, one end of each connecting rod is connected to the rotating shaft, and the other end extends in a direction away from the rotating shaft, multiple connecting rods are arranged in sequence along the axial direction, the pushing plate is arranged on one end of the connecting rod away from the rotating shaft, and an angle is formed between the plane where the pushing plate is located and the axis of the rotating shaft.

[0007] Furthermore, on the rotating shaft, the connecting rods are arranged in groups of two at intervals. In the same group of connecting rods, two connecting rods are respectively arranged on both sides of the rotating shaft, and the axes of the two connecting rods are located on the same straight line. The extension directions of the axes of two adjacent groups of connecting rods are perpendicular to each other.

[0008] Furthermore, the axis of the connecting rod is located on the plane where the pusher plate connected to the connecting rod is located, and on the two connecting rods in the same group, an angle is formed between the planes where the two connected pusher plates are located.

[0009] Furthermore, the angle between the plane where the push plate is located and the axis of the rotating shaft is 40-45°.

[0010] Furthermore, a plurality of fixing columns are arranged in the accommodating cavity, and the plurality of fixing columns are sequentially fixed to the inner side wall of the accommodating cavity along the length direction of the accommodating cavity, and the rotating shaft is rotatably arranged on the fixing columns.

[0011] Furthermore, a temperature sensor for detecting the temperature of the accommodating chamber and / or an oxygen content sensor for detecting the oxygen content in the accommodating chamber are arranged on the fixing column.

[0012] Furthermore, the heating device is a segmented heating device, and multiple segments of the heating device are sequentially arranged in the accommodating cavity, and each segment of the heating device is correspondingly provided with a temperature sensor.

[0013] Furthermore, a first driving device is provided at one end of the accommodating chamber, and the first driving device is connected to the rotating shaft of the rotating conveying device. A first positive-pressure atmosphere protection chamber is also provided at the junction of the rotating shaft and the accommodating chamber. When working, the pressure of the gas in the first positive-pressure atmosphere protection chamber is greater than the pressure of the gas in the accommodating chamber.

[0014] Furthermore, a second driving device is provided on the accommodating chamber, the second driving device is connected to the feeding device, a second positive pressure atmosphere protection chamber is provided on the outer cover of the feeding device, and the second positive pressure atmosphere protection chamber is connected with the inside of the accommodating chamber through an airway.

[0015] Furthermore, a filter, an air-clearing nozzle and a pressure sensor for detecting the air permeability of the filter are provided at the smoke exhaust port, and the air-clearing nozzle is connected to the interlayer in the filter.

[0016] Furthermore, the length of the accommodating chamber is 7-10 m, and the time the raw materials are in the accommodating chamber is 40-50 min.

[0017] In summary, in the utility model, through the arrangement of the feeding device and the rotating conveying device, when the lithium battery is recycled, the raw material is first fed from the feed port to the feeding device, and the feeding device feeds the raw material to the rotating conveying device. Since the rotating conveying device is provided with a connecting rod and a pushing plate, when the raw material is conveyed, the connecting rod located in the middle of the accommodating chamber can stir and flip the raw material, and the pushing plate located around the accommodating chamber can push the raw material to move to the position of the discharge port. While flipping and moving, the heating device heats the raw material to make it oxygen-free carbonized. The raw material that has been oxygen-free carbonized is discharged from the discharge port, and the smoke after oxygen-free carbonization is discharged from the smoke exhaust port to complete the processing of the raw material. Since the rotating conveying device will continuously stir and flip the raw material during the entire processing process, this can make the organic matter in the lithium battery crushing material be carbonized and cracked more completely and at a faster speed.

[0018] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shown is a schematic structural diagram of an oxygen-free carbonization cracking device provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the present invention, the following is a detailed description in conjunction with the accompanying drawings and preferred embodiments.

[0021] The utility model provides an oxygen-free carbonization and cracking device, which can relatively completely carbonize and crack a diaphragm and can reduce the carbonization time.

[0022] Figure 1 The figure shows a schematic diagram of the structure of the oxygen-free carbonization cracking equipment provided by the embodiment of the utility model. Figure 1As shown, the oxygen-free carbonization cracking device provided in this embodiment includes a housing chamber 10, in which a heating device 21, a feeding device 30 and a rotating conveying device 40 are arranged. The feeding device 30 and the rotating conveying device 40 are arranged in sequence. A feed port 11 is provided at a position corresponding to the feeding device 30 on the housing chamber 10, and a discharge port 12 and a smoke exhaust port 13 are provided at the other end of the housing chamber 10 opposite to the feed port 11. The rotating conveying device 40 includes a rotating shaft 41, a connecting rod 42 and a pushing plate 43 for pushing materials in the direction of the discharge port 12. There are multiple connecting rods 42, one end of each connecting rod 42 is connected to the rotating shaft 41, and the other end extends in a direction away from the rotating shaft 41. The multiple connecting rods 42 are arranged in sequence along the axial direction of the rotating shaft 41, and the pushing plate 43 is provided on the end of the connecting rod 42 away from the rotating shaft 41. An angle is formed between the plane where the pushing plate 43 is located and the axis of the rotating shaft 41.

[0023] In this embodiment, by setting the feeding device 30 and the rotating conveying device 40, when recycling lithium batteries, the protective gas is first filled into the accommodating chamber 10, and then the raw materials are fed into the feeding device 30 from the feed port 11, and the feeding device 30 feeds the raw materials into the rotating conveying device 40. Since the rotating conveying device 40 is provided with a connecting rod 42 and a pushing plate 43, when the raw materials are conveyed, the connecting rod 42 located in the middle of the accommodating chamber 10 can stir and flip the raw materials, and the pushing plate 43 located around the accommodating chamber 10 can push the raw materials to move to the position of the discharge port 12 due to its relative tilt setting with the rotating shaft. While flipping and moving, the heating device 21 heats the raw materials to make them oxygen-free carbonized. The raw materials that have been oxygen-free carbonized are discharged from the discharge port 12, and the smoke after oxygen-free carbonization is discharged from the exhaust port 13 to complete the processing of the raw materials.

[0024] Since the rotating conveying device 40 continuously stirs and turns the raw materials during the entire processing process, the organic matter in the lithium battery crushed material can be carbonized and cracked more completely and at a faster speed.

[0025] Furthermore, in this embodiment, the length of the accommodating chamber 10 may be 7-10 m, and the time that the raw material stays in the accommodating chamber 10 is 40-50 min.

[0026] Furthermore, in this embodiment, on the rotating shaft 41, the connecting rods 42 are arranged in groups of two at intervals. In the same group of connecting rods 42, the two connecting rods 42 are respectively arranged on both sides of the rotating shaft 41, and the axes of the two connecting rods 42 are located on the same straight line. The extension directions of the axes of the two adjacent groups of connecting rods 42 are perpendicular to each other. Through the above-mentioned arrangement, the material can be better stirred and turned. The axis of the connecting rod 42 is located on the plane where the push plate 43 connected to the connecting rod 42 is located. On the two connecting rods 42 in the same group, an angle is formed between the planes where the two connected push plates 43 are located. Further, the angle formed between the plane where the push plate 43 is located and the axis of the rotating shaft 41 is 40-45°.

[0027] Furthermore, a plurality of fixing columns 50 are provided in the accommodating chamber 10, and the plurality of fixing columns 50 are sequentially fixed on the inner side wall of the accommodating chamber 10 along the length direction of the accommodating chamber 10, and the rotating shaft 41 is rotatably provided on the fixing columns 50. By providing the fixing columns 50, the rotating shaft 41 can be fixed on the one hand, and the rotating shaft 41 can also be ensured to rotate smoothly on the other hand. In this embodiment, the fixing columns 50 are fixed to the top of the accommodating chamber, that is, the rotating shaft 41 is suspended on the fixing columns 50. It can be understood that in other embodiments, the fixing columns 50 can also be fixed to the bottom of the accommodating chamber, and the rotating shaft 41 is supported on the fixing columns 50.

[0028] A temperature sensor 22 for detecting the temperature of the accommodating chamber 10 and / or an oxygen content sensor 23 for detecting the oxygen content in the accommodating chamber 10 are also disposed on the fixing column 50 .

[0029] Furthermore, in this embodiment, the above-mentioned heating device 21 can be segmented, and multiple segments of heating devices 21 are sequentially arranged in the accommodating chamber 10, and each segment of the heating device 21 can correspond to a temperature sensor 22, so that the temperature in the accommodating chamber 10 is more stable. In this embodiment, the temperature in the accommodating chamber 10 can be 400-450°C.

[0030] A first driving device 44 is provided at one end of the accommodating chamber 10, and the first driving device 44 is connected to the rotating shaft 41 of the rotating conveying device 40 to drive the rotating shaft 41 to rotate. A first positive pressure atmosphere protection chamber 45 is also provided at the junction of the rotating shaft 41 and the accommodating chamber 10, and the pressure of the gas in the first positive pressure atmosphere protection chamber 45 is greater than the pressure of the gas in the accommodating chamber 10. During operation, by supplementing the protective gas, such as nitrogen, in the first positive pressure atmosphere protection chamber 45, the pressure in the first positive pressure atmosphere protection chamber 45 is always greater than the pressure of the gas in the accommodating chamber 10, which can ensure the sealing performance of the junction of the rotating shaft 41 and the accommodating chamber 10.

[0031] A heat-insulating layer 14 may be disposed outside the accommodating cavity 10 .

[0032] Furthermore, the feeding device 30 can be a built-in shaftless screw feeding device 30, and a second driving device 31 is also provided at one end of the accommodating chamber 10 away from the first driving device 44, and the second driving device 31 is connected to the feeding device 30 to drive the feeding device 30.

[0033] A second positive pressure atmosphere protection chamber 32 is also provided outside the feeding device 30, and the second positive pressure atmosphere protection chamber 32 is connected to the interior of the accommodating chamber 10 through an air passage 321. The gas replenishing device replenishes the protective gas into the second positive pressure atmosphere protection chamber 32, and the protective gas enters the accommodating chamber 10 after filling the second positive pressure atmosphere protection chamber 32.

[0034] Furthermore, in order to ensure the sealing performance and facilitate the exhaust of smoke, the pressure of the protective gas in the accommodating chamber 10 is higher than the external air pressure, and an exhaust device (not shown) is also provided at the exhaust port 13 to ensure that the smoke can be continuously discharged from the accommodating chamber 10. A filter 131 is also provided at the exhaust port 13 to filter the smoke.

[0035] A clearing nozzle 132 is also provided at the smoke outlet 13, and the clearing nozzle is connected to the interlayer of the filter screen 131. A pressure sensor 133 for detecting the air permeability of the filter screen 131 is also provided on the side of the filter screen 131 away from the accommodating chamber 10. When the air permeability of the filter screen 131 is reduced to a set air volume value, protective gas is filled into the interlayer of the filter screen 131 from the clearing nozzle 132 to clear the filter screen 131.

[0036] Furthermore, in this embodiment, the discharge port 12 is located below the accommodating chamber 10. When the rotating conveying device 40 transports the anaerobic carbonized raw materials to the discharge port 12, the anaerobic carbonized raw materials are discharged from the accommodating chamber 10 by gravity and enter the next recovery process.

[0037] In summary, in the present invention, through the arrangement of the feeding device 30 and the rotating conveying device 40, when recycling lithium batteries, the raw materials are first fed into the feeding device 30 from the feed port 11, and the feeding device 30 feeds the raw materials into the rotating conveying device 40. Since the rotating conveying device 40 is provided with a connecting rod 42 and a pushing plate 43, when conveying the raw materials, the connecting rod 42 located in the middle of the accommodating chamber 10 can stir and flip the raw materials, and the pushing plate 43 located around the accommodating chamber 10 can push the raw materials to move to the position of the discharge port 12. While flipping and moving, the heating device 21 heats the raw materials to make them oxygen-free carbonized. The oxygen-free carbonized raw materials are discharged from the discharge port 12, and the smoke after oxygen-free carbonization is discharged from the smoke exhaust port 13 to complete the processing of the raw materials. Since the rotating conveying device 40 will continuously stir and flip the raw materials during the entire processing process, this can make the organic matter in the lithium battery crushing material be carbonized and cracked more completely, and at a faster speed.

[0038] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An oxygen-free carbonization and cracking device, characterized in that: The invention comprises a accommodating chamber, in which a heating device, a loading device and a rotating conveying device are arranged, the heating device heats the accommodating chamber, the loading device and the rotating conveying device are arranged in sequence, a feed port is provided at a position of the accommodating chamber corresponding to the loading device, a discharge port and a smoke exhaust port are provided at the other end of the accommodating chamber opposite to the feed port, the rotating conveying device comprises a rotating shaft, a connecting rod and a pushing plate for pushing material in the direction of the discharge port, there are a plurality of connecting rods, one end of each connecting rod is connected to the rotating shaft, and the other end extends in a direction away from the rotating shaft, a plurality of connecting rods are arranged in sequence along the axial direction of the rotating shaft, the pushing plate is provided on the end of the connecting rod away from the rotating shaft, and an angle is formed between the plane where the pushing plate is located and the axis of the rotating shaft.

2. The oxygen-free carbonization and cracking equipment according to claim 1, characterized in that: On the rotating shaft, the connecting rods are arranged in groups of two at intervals. In the same group of connecting rods, two connecting rods are respectively arranged on both sides of the rotating shaft, and the axes of the two connecting rods are located on the same straight line. The extension directions of the axes of two adjacent groups of connecting rods are perpendicular to each other.

3. The oxygen-free carbonization and cracking equipment according to claim 2, characterized in that: The axis of the connecting rod is located on the plane where the push plate connected to the connecting rod is located. On the two connecting rods in the same group, an angle is formed between the planes where the two connected push plates are located.

4. The oxygen-free carbonization and cracking equipment according to claim 1, characterized in that: The angle between the plane where the push plate is located and the axis of the rotating shaft is 40-45°.

5. The oxygen-free carbonization and cracking equipment according to claim 1, characterized in that: A plurality of fixing columns are arranged in the accommodating cavity. The plurality of fixing columns are sequentially fixed on the inner side wall of the accommodating cavity along the length direction of the accommodating cavity. The rotating shaft is rotatably arranged on the fixing columns.

6. The oxygen-free carbonization and cracking equipment according to claim 5, characterized in that: A temperature sensor for detecting the temperature of the accommodating chamber and / or an oxygen content sensor for detecting the oxygen content in the accommodating chamber are arranged on the fixing column.

7. The oxygen-free carbonization and cracking equipment according to claim 1, characterized in that: The heating device is a segmented heating device, and multiple segments of the heating device are sequentially arranged in the accommodating cavity, and each segment of the heating device is correspondingly provided with a temperature sensor.

8. The oxygen-free carbonization and cracking equipment according to claim 1, characterized in that: A first driving device is arranged at one end of the accommodating chamber, and the first driving device is connected to the rotating shaft of the rotating conveying device. A first positive-pressure atmosphere protection chamber is also arranged at the junction of the rotating shaft and the accommodating chamber. When working, the pressure of the gas in the first positive-pressure atmosphere protection chamber is greater than the pressure of the gas in the accommodating chamber.

9. The oxygen-free carbonization and cracking equipment according to claim 1, characterized in that: A second driving device is arranged on the accommodating chamber, the second driving device is connected to the feeding device, a second positive pressure atmosphere protection chamber is arranged on the outer cover of the feeding device, and the second positive pressure atmosphere protection chamber is connected with the inside of the accommodating chamber through an airway.

10. The oxygen-free carbonization and cracking equipment according to claim 1, characterized in that: The smoke exhaust port is provided with a filter, an air cleaning nozzle and a pressure sensor for detecting the air permeability of the filter, and the air cleaning nozzle is communicated with the interlayer in the filter.

11. The oxygen-free carbonization and cracking equipment according to claim 1, characterized in that: The length of the accommodating chamber is 7-10m, and the time the raw materials are kept in the accommodating chamber is 40-50min.

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