Thermolysis system of lithium battery recycling system

Abstract

This utility model relates to a pyrolysis system for lithium battery recycling, comprising a screw feeder, a drying kiln, a belt conveyor, a roasting kiln, and a cooling kiln. The screw feeder, at the very beginning, is connected to the discharge port of the crushing system, feeding the crushed material into the drying kiln. The discharge port of the drying kiln is connected to the feed hopper of the belt conveyor, and the end of the belt conveyor is connected to the feed port of the roasting kiln. An air pipe and a natural gas pipe are connected in the middle of the roasting kiln, and a nitrogen pipe and an exhaust pipe are connected to the feed port of the roasting kiln. The discharge port of the roasting kiln is connected to the cooling kiln. This utility model's lithium battery recycling system's pyrolysis system adds a drying kiln and a cooling kiln. The drying kiln ensures the material entering the roasting kiln is dry, improving roasting efficiency; the cooling kiln rapidly cools the material, reducing its residence time on the production line and improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the pyrolysis system of a lithium battery recycling system. Background Technology

[0002] With the rapid development of the new energy industry, a wave of lithium battery retirements is quietly approaching. How to efficiently and environmentally recycle the electrode materials from used batteries has become an urgent problem for the industry to solve.

[0003] Current lithium battery recycling systems use pyrolysis systems to directly roast materials, but the materials may be damp, resulting in low roasting efficiency. Furthermore, after roasting, it is necessary to wait for the materials to cool down before subsequent production can begin. Therefore, the materials need to pass through a long conveying channel to cool down, which affects work efficiency and increases the time the materials spend on the production line, thus hindering the improvement of work efficiency. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a pyrolysis system for a lithium battery recycling system that improves calcination efficiency and working efficiency.

[0005] The purpose of this utility model is achieved as follows: The pyrolysis system of the lithium battery recycling system includes a screw feeder, a drying kiln, a belt conveyor, a roasting kiln, and a cooling kiln. The screw feeder at the front is connected to the discharge port of the crushing system. The screw feeder feeds the crushed material into the drying kiln. The discharge port of the drying kiln is connected to the feed hopper of the belt conveyor. The end of the belt conveyor is connected to the feed port of the roasting kiln. Air pipes and natural gas pipes are connected in the middle of the roasting kiln. A nitrogen pipe is connected to the feed port of the roasting kiln. An exhaust pipe is connected to the feed port of the roasting kiln. The discharge port of the roasting kiln is connected to the cooling kiln.

[0006] The cooling water in the cooling kiln is connected to an external cooling water tank. The cooling kiln is connected to the cooling water tank via a drain pump, and the cooling water tank is connected to the cooling kiln via a return water pump.

[0007] Compared with the prior art, the beneficial effects of this utility model are: The pyrolysis system of this utility model lithium battery recycling system is equipped with a drying kiln and a cooling kiln. The drying kiln can ensure that the material entering the roasting kiln is dry and improve the roasting efficiency; the addition of the cooling kiln can quickly cool down the material, reduce the residence time of the material on the production line, and improve work efficiency. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the pyrolysis system of the lithium battery recycling system of this utility model.

[0009] Figure 2 for Figure 1 Structural diagram of the intermediate roasting kiln and cooling kiln.

[0010] The components include: 1. Screw feeder; 2. Drying kiln; 3. Belt conveyor; 4. Calcination kiln; 5. Air pipe; 6. Natural gas pipe; 7. Nitrogen pipe; 8. Exhaust pipe; 9. Cooling kiln; and 10. Cooling water tank. Detailed Implementation

[0011] See Figure 1 and Figure 2 This utility model relates to a pyrolysis system for lithium battery recycling, including a screw feeder 1, a drying kiln 2, a belt conveyor 3, a roasting kiln 4, and a cooling kiln 5. The screw feeder 1, which is the first part, is connected to the discharge port of the crushing system. The screw feeder 1 feeds the crushed material into the drying kiln 2 for drying. The discharge port of the drying kiln 2 is connected to the feed hopper of the belt conveyor 3, and the end of the belt conveyor 3 is connected to the feed port of the roasting kiln 4.

[0012] The roasting kiln 4 is connected to an air pipe 5 and a natural gas pipe 6 for roasting materials. A nitrogen pipe 7 is connected to the feed inlet of the roasting kiln 4 for use as a protective gas. An exhaust pipe 8 is connected to the feed inlet of the roasting kiln 4 for discharging the used gas.

[0013] The discharge port of the calcining kiln 4 is connected to the cooling kiln 9. The cooling water in the cooling kiln 9 is connected to the external cooling water tank 10. The cooling kiln 9 is connected to the cooling water tank 10 through the drain pump 11, which is used to cool the water used in the cooling kiln 9 again. The cooling water tank 10 is connected to the cooling kiln 9 through the return water pump 12, which is used to pass the cooled water in the cooling water tank 10 into the cooling kiln 9 for reuse.

[0014] Additionally, it should be noted that the above-described specific implementation is merely an optimized solution of this patent, and any modifications or improvements made by those skilled in the art based on the above concept are within the scope of protection of this patent.

Claims

1. A pyrolysis system for a lithium battery recycling system, characterized in that: It includes a screw feeder, a drying kiln, a belt conveyor, a calcining kiln, and a cooling kiln. The screw feeder at the front is connected to the discharge port of the crushing system. The screw feeder feeds the crushed material into the drying kiln. The discharge port of the drying kiln is connected to the feed hopper of the belt conveyor. The end of the belt conveyor is connected to the feed port of the calcining kiln. Air pipes and natural gas pipes are connected in the middle of the calcining kiln. A nitrogen pipe is connected to the feed port of the calcining kiln. An exhaust pipe is connected to the feed port of the calcining kiln. The discharge port of the calcining kiln is connected to the cooling kiln.

2. The pyrolysis system of the lithium battery recycling system according to claim 1, characterized in that: The cooling water in the cooling kiln is connected to an external cooling water tank. The cooling kiln is connected to the cooling water tank via a drain pump, and the cooling water tank is connected to the cooling kiln via a return water pump.

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