Lithium electricity new energy rotary kiln tail gas purification equipment

Abstract

The utility model provides a kind of lithium electric new energy rotary kiln tail gas purification equipment, comprising: rotary kiln flue gas main, one end of rotary kiln flue gas main is provided with first desulfurization dust removal tower, one end of first desulfurization dust removal tower is provided with second desulfurization dust removal tower, one end of second desulfurization dust removal tower is provided with third desulfurization dust removal tower, one end of third desulfurization dust removal tower is provided with first wet electric dust collector, one end of third desulfurization dust removal tower is provided with second wet electric dust collector, one end of second wet electric dust collector is provided with depth cooling white removal device, one end of depth cooling white removal device is provided with terminal wet electric dust collector, one end of terminal wet electric dust collector is provided with exhaust pipe, monitoring device is fixedly installed on exhaust pipe.The utility model provides a kind of lithium electric new energy rotary kiln tail gas purification equipment, by the purification of the large amount of pollutants generated in the operation process of rotary kiln, to control the large amount of pollutants generated in the production process of lithium electric new energy in ultra-low emission.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production, and in particular to a lithium battery new energy rotary kiln tail gas purification device. Background Technology

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the positive / negative electrode material and a non-aqueous electrolyte solution. Lithium batteries can be broadly divided into two categories: lithium metal batteries and lithium-ion batteries. Lithium-ion batteries do not contain metallic lithium and are rechargeable.

[0003] With the rapid development of the new energy battery industry, a large number of pollutants are generated during the operation of rotary kilns, a key process in the production of lithium batteries, which causes environmental pollution.

[0004] Therefore, it is necessary to provide a lithium-ion battery new energy rotary kiln exhaust gas purification device to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model provides a rotary kiln exhaust gas purification device for lithium battery new energy, which solves the problem of a large amount of pollutants being generated during the operation of the rotary kiln, a key process in the current lithium battery new energy production process, thus polluting the environment.

[0006] To solve the above-mentioned technical problems, this utility model provides a lithium battery new energy rotary kiln tail gas purification device, comprising:

[0007] A rotary kiln flue gas main is provided. A first desulfurization and dust removal tower is provided at one end of the rotary kiln flue gas main. A second desulfurization and dust removal tower is provided at one end of the first desulfurization and dust removal tower. A third desulfurization, dust removal, and defluorination tower is provided at one end of the second desulfurization and dust removal tower. A first wet electrostatic precipitator is provided at one end of the third desulfurization, dust removal, and defluorination tower. A second wet electrostatic precipitator is provided at one end of the second wet electrostatic precipitator. A deep cooling and whitening device is provided at one end of the deep cooling and whitening device. A terminal wet electrostatic precipitator is provided at one end of the terminal wet electrostatic precipitator. A flue gas exhaust pipe is provided at one end of the flue gas exhaust pipe. A monitoring device is fixedly installed on the flue gas exhaust pipe.

[0008] Preferably, a lime slurry conveying pump is provided at one end of the third desulfurization, dust removal and defluorination tower, a lime solution storage tank is provided at one end of the lime slurry conveying pump, a lime dissolving tank is provided at one end of the lime solution storage tank, and a lime powder storage silo is provided at one end of the lime dissolving tank.

[0009] Preferably, a wet electrostatic precipitator is provided with a wet electrostatic rinsing integrated water tank on one side, and a wet electrostatic rinsing water pump is provided with a wet electrostatic rinsing integrated water tank on one side.

[0010] Preferably, a water inlet pipe is provided on one side of the deep cooling de-whitening device, and a water return pipe is provided on the other side of the deep cooling de-whitening device.

[0011] Preferably, a support frame is fixedly installed inside the lime powder storage silo, and a stirring device is provided on the top of the support frame.

[0012] Preferably, the stirring device includes a rotating rod and a plurality of stirring blades, one end of the rotating rod being rotatably connected to the interior of the support frame, and the plurality of stirring blades being fixedly connected to the surface of the rotating rod.

[0013] Preferably, a stirring motor is fixedly installed on one side of the lime powder storage silo, and a transmission component is provided at the output end of the stirring motor.

[0014] Compared with related technologies, the lithium battery new energy rotary kiln tail gas purification equipment provided by this utility model has the following beneficial effects:

[0015] This utility model provides a rotary kiln exhaust gas purification device for lithium battery new energy. Through the rotary kiln flue gas main pipe, in conjunction with a first desulfurization and dust removal tower, a second desulfurization, dust removal, and thallium removal tower, a third desulfurization, dust removal, and fluorine removal tower, a first wet electrostatic precipitator, a second wet electrostatic precipitator, a deep cooling and whitening device, a terminal wet electrostatic precipitator monitoring device, and an exhaust pipe, the device purifies the large amount of pollutants generated during the operation of the rotary kiln. This effectively controls the large amount of pollutants generated during the key process of rotary kiln operation in lithium battery new energy production to within the following ranges: NOx ≤ 50 mg / Nm3, SO2 ≤ 35 mg / Nm3, particulate matter ≤ 5 mg / Nm3, fluoride ≤ 4 mg / Nm3, and metallic thallium ≤ 30 μg / Nm3, achieving ultra-low emission requirements. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of a first embodiment of a lithium battery new energy rotary kiln tail gas purification device provided by this utility model;

[0017] Figure 2 A schematic diagram of the structure of a second embodiment of a lithium battery new energy rotary kiln tail gas purification device provided by this utility model;

[0018] Figure 3 for Figure 2 The diagram shows a cross-sectional view of the lime powder storage silo.

[0019] Numbered in the diagram: 1. Rotary kiln flue gas main pipe; 2. First desulfurization and dust removal tower; 3. Second desulfurization, dust removal, and thallium removal tower; 4. Third desulfurization, dust removal, and fluorine removal tower; 5. First wet electrostatic precipitator; 6. Second wet electrostatic precipitator; 7. Deep cooling and whitening device; 8. Terminal wet electrostatic precipitator; 9. CEMS online monitoring (monitoring device); 10. Exhaust pipe.

[0020] 11. Lime powder storage silo; 12. Lime dissolving tank; 13. Lime solution storage tank; 14. Lime slurry conveying pump.

[0021] 15. Integrated wet electro-flushing water tank; 16. Wet electro-flushing water pump.

[0022] 17. Circulating cooling water supply; 18. Circulating cooling water return.

[0023] 19. Support frame; 20. Stirring device; 201. Rotating rod; 202. Stirring blade; 21. Stirring motor; 22. Transmission component. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] First Embodiment

[0026] Please refer to the following: Figure 1 ,in, Figure 1 A schematic diagram of the structure of a first embodiment of a lithium-ion battery new energy rotary kiln exhaust gas purification device provided by this utility model. A lithium-ion battery new energy rotary kiln exhaust gas purification device includes:

[0027] A rotary kiln flue gas main duct 1 is provided. A first desulfurization and dust removal tower 2 is provided at one end of the rotary kiln flue gas main duct 1. A second desulfurization and dust removal tower 3 is provided at one end of the first desulfurization and dust removal tower 2. A third desulfurization, dust removal and defluorination tower 4 is provided at one end of the second desulfurization and dust removal tower 3. A first wet electrostatic precipitator 5 is provided at one end of the third desulfurization, dust removal and defluorination tower 4. A second wet electrostatic precipitator 6 is provided at one end of the third desulfurization, dust removal and defluorination tower 4. A deep cooling and whitening device 7 is provided at one end of the second wet electrostatic precipitator 6. A terminal wet electrostatic precipitator 8 is provided at one end of the terminal wet electrostatic precipitator 8. An exhaust pipe 10 is provided at one end of the exhaust pipe 10. A monitoring device 9 is fixedly installed on the exhaust pipe 10.

[0028] One end of the rotary kiln flue gas main pipe 1 is connected to the first desulfurization and dust removal tower 2 through a pipe. One end of the first desulfurization and dust removal tower 2 is connected to the second desulfurization and dust removal tower 3 through a pipe. One end of the second desulfurization and dust removal tower 3 is connected to the third desulfurization, dust removal and defluorination tower 4 through a pipe.

[0029] One end of the third desulfurization, dust removal, and defluorination tower 4 is connected to the first wet electrostatic precipitator 5 and the second wet electrostatic precipitator 6 via pipes, while one end of the first wet electrostatic precipitator 5 and the second wet electrostatic precipitator 6 is connected to the deep cooling and whitening device 7 via connecting pipes.

[0030] One end of the deep cooling whitening device 7 is connected to the terminal wet electrostatic precipitator 8 via a pipe.

[0031] One end of the third desulfurization, dust removal and defluorination tower 4 is equipped with a lime slurry conveying pump 14, one end of the lime slurry conveying pump 14 is equipped with a lime solution storage tank 13, one end of the lime solution storage tank 13 is equipped with a lime dissolving tank 12, and one end of the lime dissolving tank 12 is equipped with a lime powder storage silo 11.

[0032] One end of the third desulfurization, dust removal, and defluorination tower 4 is connected to the lime slurry conveying pump 14 via a connecting pipe. One end of the lime slurry conveying pump 14 is connected to the lime solution storage tank 13 via a connecting pipe. One end of the lime solution storage tank 13 is connected to the lime dissolving tank 12 via a connecting pipe in conjunction with the lime slurry transfer pump. The lime powder storage silo 11 conveys lime into the interior of the lime dissolving tank 12 via a spiral blade conveyor.

[0033] The second wet electrostatic precipitator 6 is provided with a wet electrostatic rinsing integrated water tank 15 on one side, and a wet electrostatic rinsing water pump 16 is provided on one side of the wet electrostatic rinsing integrated water tank 15.

[0034] The output end of the wet electrostatic precipitator 16 is connected to the second wet electrostatic precipitator 6 and the first wet electrostatic precipitator 5 through a connecting pipe, and the wet electrostatic precipitator is rinsed.

[0035] A water inlet pipe 17 is provided on one side of the deep cooling de-whitening device 7, and a water return pipe 18 is provided on one side of the deep cooling de-whitening device 7.

[0036] Desulfurization and defluorination absorbent transportation: After passing through the lime powder storage silo 11, lime enters the lime dissolving tank 12, the lime solution storage tank 13, and the lime slurry conveying pump 14 in sequence, and is sent to each unit of the desulfurization, defluorination and dethallium removal tower.

[0037] Desulfurization, defluorination, and thallium removal products: 1. Desulfurization and defluorination products, calcium sulfate dihydrate and calcium fluoride, are sent to the pressure filter system and then to the solid waste treatment system for processing.

[0038] The thallium removal products enter a dedicated thallium removal device, and the products are processed by a qualified unit. The separated water is returned to the desulfurization, defluorination and thallium removal system for recycling.

[0039] Wet electro-flushing system: wet electro-flushing integrated water tank 15, wet electro-flushing water pump 16, and various wet electro-flushing systems.

[0040] Deep cooling and whitening cooling water system: Cooling water is circulated sequentially through the water inlet pipe 17 to the deep cooling and whitening device 7, and then returned to the cooling tower for reuse through the return water pipe 18.

[0041] This enables wastewater to be recycled and reused, achieving the goal of energy conservation and consumption reduction. The application of deep cooling dewhitening technology greatly improves the working environment and enhances environmental protection.

[0042] The working principle of the lithium battery new energy rotary kiln tail gas purification equipment provided by this utility model is as follows:

[0043] During operation, a large amount of pollutants generated by the rotary kiln of lithium-ion battery new energy are sequentially introduced into the first desulfurization and dust removal tower 2 through the rotary kiln flue gas main pipe 1, then into the second desulfurization, dust removal and thallium removal tower 3, and then into the third desulfurization, dust removal and fluorine removal tower 4. The flue gas then enters the first wet electrostatic precipitator 5 and the second wet electrostatic precipitator 6 for further dust removal. After being pressurized by the induced draft fan, the flue gas enters the deep cooling and whitening device 7, and then enters the terminal wet electrostatic precipitator 8 for deep dust removal before being discharged in compliance with standards. The purified flue gas is discharged into the atmosphere through the exhaust pipe 10, and the emitted flue gas is monitored by the monitoring device 9.

[0044] In the lithium battery new energy production process, the flue gas from the rotary kiln, a key component, passes through an SNCR denitrification and bag filter before entering the first desulfurization and dust removal tower. After further desulfurization and thallium removal in the second desulfurization and thallium removal tower, it enters the third desulfurization and fluorination tower. The desulfurized and defluorinated flue gas then passes through a parallel wet electrostatic precipitator cooling and whitening device, and finally undergoes deep dust removal in a terminal wet electrostatic precipitator before being discharged in compliance with emission standards.

[0045] Compared with related technologies, the lithium battery new energy rotary kiln tail gas purification equipment provided by this utility model has the following beneficial effects:

[0046] This utility model provides a rotary kiln tail gas purification device for lithium battery new energy. Through the rotary kiln flue gas main pipe 1, in conjunction with the first desulfurization and dust removal tower 2, the second desulfurization, dust removal and thallium removal tower 3, the third desulfurization, dust removal and fluorine removal tower 4, the first wet electrostatic precipitator 5, the second wet electrostatic precipitator 6, the deep cooling and whitening device 7, the terminal wet electrostatic precipitator 8, the monitoring device 9, and the exhaust pipe 10, a large amount of pollutants generated during the operation of the rotary kiln are purified. This effectively controls the large amount of pollutants generated during the operation of the rotary kiln, a key process in the production of lithium battery new energy, within the following ranges: NOx ≤ 50 mg / Nm3, SO2 ≤ 35 mg / Nm3, particulate matter ≤ 5 mg / Nm3, fluoride ≤ 4 mg / Nm3, and metallic thallium ≤ 30 μg / Nm3, achieving ultra-low emission requirements.

[0047] Second Embodiment

[0048] Please refer to the following: Figure 2 and Figure 3 Based on the first embodiment of this application, which provides a lithium-ion battery new energy rotary kiln tail gas purification device, the second embodiment of this application proposes another lithium-ion battery new energy rotary kiln tail gas purification device. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0049] Specifically, the difference in the second embodiment of this application regarding the purification equipment for the tail gas of a lithium-ion battery new energy rotary kiln is that, in the purification equipment for the tail gas of a lithium-ion battery new energy rotary kiln, a support frame 19 is fixedly installed inside the lime powder storage silo 11, and a stirring device 20 is provided on the top of the support frame 19.

[0050] The stirring device 20 includes a rotating rod 201 and a plurality of stirring blades 202. One end of the rotating rod 201 is rotatably connected to the inside of the support frame 19, and the plurality of stirring blades 202 are fixedly connected to the surface of the rotating rod 201.

[0051] A stirring motor 21 is fixedly installed on one side of the lime powder storage silo 11, and a transmission component 22 is provided at the output end of the stirring motor 21.

[0052] The stirring motor 21 is a servo motor, while the transmission component 22 is a belt with a pulley, a synchronous belt with a synchronous pulley, etc., used to connect the stirring motor 21 and the rotating rod 201, so that after the stirring motor 21 is started, the rotating rod 201 is driven to rotate through the transmission component 22.

[0053] The working principle of the lithium battery new energy rotary kiln tail gas purification equipment provided by this utility model is as follows:

[0054] In use, the stirring motor 21 is started, which drives the transmission component 22 to run, thereby causing the rotating rod 201 connected to multiple stirring blades 202 to rotate to one side, stirring the inside of the lime powder storage silo 11 and preventing lime from accumulating inside the lime powder storage silo 11 and causing blockage.

[0055] Compared with related technologies, the lithium battery new energy rotary kiln tail gas purification equipment provided by this utility model has the following beneficial effects:

[0056] This utility model provides a lithium battery new energy rotary kiln tail gas purification device. The stirring motor 21 and the transmission component 22 drive the stirring device 20, thereby preventing lime from accumulating inside the lime powder storage silo 11 and causing blockage.

[0057] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A lithium-ion battery new energy rotary kiln tail gas purification device, characterized in that, include: A rotary kiln flue gas main is provided. A first desulfurization and dust removal tower is provided at one end of the rotary kiln flue gas main. A second desulfurization and dust removal tower is provided at one end of the first desulfurization and dust removal tower. A third desulfurization, dust removal, and defluorination tower is provided at one end of the second desulfurization and dust removal tower. A first wet electrostatic precipitator is provided at one end of the third desulfurization, dust removal, and defluorination tower. A second wet electrostatic precipitator is provided at one end of the third desulfurization, dust removal, and defluorination tower. A deep cooling and whitening device is provided at one end of the second wet electrostatic precipitator. A terminal wet electrostatic precipitator is provided at one end of the terminal wet electrostatic precipitator. A flue gas exhaust pipe is provided at one end of the flue gas exhaust pipe. A monitoring device is fixedly installed on the flue gas exhaust pipe.

2. The lithium battery new energy rotary kiln tail gas purification equipment according to claim 1, characterized in that, A lime slurry conveying pump is provided at one end of the third desulfurization, dust removal and defluorination tower. A lime solution storage tank is provided at one end of the lime slurry conveying pump. A lime dissolving tank is provided at one end of the lime solution storage tank. A lime powder storage silo is provided at one end of the lime dissolving tank.

3. The lithium battery new energy rotary kiln tail gas purification equipment according to claim 1, characterized in that, The second wet electrostatic precipitator is provided with a wet electrostatic rinsing integrated water tank on one side, and a wet electrostatic rinsing water pump is provided on one side of the wet electrostatic rinsing integrated water tank.

4. The lithium battery new energy rotary kiln tail gas purification equipment according to claim 1, characterized in that, A water inlet pipe is provided on one side of the deep cooling de-whitening device, and a water return pipe is provided on the other side of the deep cooling de-whitening device.

5. The lithium battery new energy rotary kiln tail gas purification equipment according to claim 2, characterized in that, The lime powder storage silo is equipped with a fixed support frame inside, and a stirring device is installed on the top of the support frame.

6. The lithium battery new energy rotary kiln tail gas purification equipment according to claim 5, characterized in that, The stirring device includes a rotating rod and multiple stirring blades. One end of the rotating rod is rotatably connected to the inside of the support frame, and the multiple stirring blades are fixedly connected to the surface of the rotating rod.

7. The lithium battery new energy rotary kiln tail gas purification equipment according to claim 5, characterized in that, A stirring motor is fixedly installed on one side of the lime powder storage silo, and a transmission component is provided at the output end of the stirring motor.

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