Integrated water-cooling waste gas purification device

Abstract

The invention discloses an integrated water-cooling waste gas purification device, which belongs to the technical field of waste gas treatment equipment, and comprises a tray, a first support frame is arranged on the tray, the middle part of the first support frame is connected with a waste liquid collection box through a second support frame, the top of the first support frame is connected with a gas-liquid separation tank, and the upper part of the gas-liquid separation tank is communicated with a second gas inlet pipe; the second air inlet pipe is communicated with a U-shaped pipe, the U-shaped pipe is communicated with the first air inlet pipe, the top of the gas-liquid separation tank is connected with an air guide upper cover, the air guide upper cover is fixedly connected with a rotating disc, and a cooling water coil pipe is spirally laid on the rotating disc. According to the integrated water-cooling waste gas purification device disclosed by the invention, the U-shaped pipe is arranged, so that the noise level of a working environment is improved, the NMP recovery efficiency is remarkably improved, the environmental pollution is reduced, the space is saved, the maintenance requirement is reduced, the human resource investment and the maintenance cost are saved, waste gas is effectively treated, and resource reutilization is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment equipment, and in particular to an integrated water-cooled waste gas purification device. Background Art

[0002] During the lithium battery baking process, a large amount of NMP (N-methylpyrrolidone) waste gas is generated. This waste gas has the characteristics of high concentration, large air volume, and single solvent component. In the lithium battery production process, the vacuum pump is an indispensable equipment responsible for extracting the waste gas generated during the baking process. However, traditional vacuum pumps will generate significant noise and waste gas emissions during operation, which will have adverse effects on the working environment and surrounding ecology. Existing noise reduction and waste gas treatment technologies usually adopt a separation design, resulting in large equipment space, complex installation, and high maintenance costs. Especially for the treatment of NMP (N-methylpyrrolidone) waste gas, the existing technology is often inefficient and difficult to achieve a high recovery rate, resulting in waste of resources and environmental pollution. Therefore, a more efficient and environmentally friendly solution is urgently needed. Summary of the invention

[0003] The purpose of the present invention is to provide an integrated water-cooled exhaust gas purification device, which provides a U-shaped tube to improve the noise level of the working environment, significantly improve the recovery efficiency of NMP, reduce environmental pollution, save space, reduce maintenance requirements, save human resource investment and maintenance costs, effectively treat exhaust gas and realize resource recycling.

[0004] To achieve the above-mentioned objectives, the present invention provides an integrated water-cooled exhaust gas purification device, including a tray, a first support frame is provided on the tray, the middle part of the first support frame is connected to the waste liquid collection box through a second support frame, the top of the first support frame is connected to a gas-liquid separation tank, the top of the gas-liquid separation tank is connected to a second air inlet pipe, the second air inlet pipe is connected to a U-shaped pipe, the U-shaped pipe is connected to the first air inlet pipe, the top of the gas-liquid separation tank is connected to an air guide upper cover, the air guide upper cover is fixedly connected to a rotating disk, and a cooling water coil is spirally laid on the rotating disk.

[0005] Preferably, threaded holes are evenly arranged at the edge of the air guide cover, and a first exhaust pipe is arranged at the center thereof. One end of the first exhaust pipe is located above the air guide cover, and the other end thereof is located at the bottom of the gas-liquid separation tank. Water inlets and outlets are respectively arranged on both sides of the first exhaust pipe, and the water inlets and outlets are respectively connected to the cooling water coil.

[0006] Preferably, the gas-liquid separation tank is connected to the top of the waste liquid collection box, the bottoms of the gas-liquid separation tank and the waste liquid collection box are both hemispherical, a second exhaust pipe is provided on one side of the top of the waste liquid collection box, a first control valve is installed on the second exhaust pipe, a liquid level meter is installed in the waste liquid collection box, the bottom of the waste liquid collection box is connected to the first drain pipe, and a second control valve is installed on the first drain pipe.

[0007] Preferably, the second support frame includes a support ring and four support plates, the four support plates are evenly distributed on the support ring, and one end of the four support plates is fixedly connected to the support ring, and the other end thereof is fixedly connected to the waste liquid collection box.

[0008] Preferably, the bottom of the U-shaped tube is connected to the second liquid discharge pipe, and the second liquid discharge pipe is provided with a third control valve.

[0009] Preferably, a connecting piece is provided at the end of the first air inlet pipe.

[0010] Preferably, a support block is fixedly connected to the tray, and the bottom of the first support frame is connected to the support block by bolts.

[0011] Therefore, the present invention adopts the above-mentioned integrated water-cooled exhaust gas purification device, which has the following beneficial effects: 1. The integrated design integrates the U-shaped pipe with the exhaust gas treatment system, saving space. The integrated design reduces maintenance requirements, saves human resources and maintenance costs. The U-shaped pipe effectively reduces the noise caused by exhaust gas emissions and improves the noise level of the working environment. 2. The "heat recovery + condensation" process can be used to recycle the heat generated during the lithium battery baking process; significantly improve the recovery efficiency of NMP, reduce environmental pollution, effectively treat waste gas and realize resource recycling.

[0012] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of an integrated water-cooled exhaust gas purification device of the present invention; Figure 2 It is a cross-sectional view of an embodiment of the integrated water-cooled exhaust gas purification device of the present invention.

[0014] Reference numerals 1. Tray; 2. First support frame; 3. Second support frame; 4. Waste liquid collection box; 5. Gas-liquid separation tank; 6. Air guide cover; 7. Cooling water coil; 8. Rotating disk; 9. First exhaust pipe; 10. First air inlet pipe; 11. U-shaped pipe; 12. Second air inlet pipe; 13. Connector; 14. Second drain pipe; 15. Third control valve; 16. First drain pipe; 17. Second control valve; 18. Second exhaust pipe; 19. First control valve; 20. Support block. DETAILED DESCRIPTION

[0015] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0016] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0017] Embodiment 1 like Figure 1 to Figure 2 As shown, the present invention provides an integrated water-cooled waste gas purification device, including a tray 1, which can collect waste liquid, keep the environment clean, improve safety, and prevent waste liquid from polluting the ground. A first support frame 2 is provided on the tray 1, and a support block 20 is fixedly connected to the tray 1. The bottom of the first support frame 2 is connected to the support block 20 by bolts, and the first support frame 2 can be stably installed on the tray 1 to improve stability.

[0018] The middle part of the first support frame 2 is connected to the waste liquid collection box 4 through the second support frame 3, the first support frame 2 and the second support frame 3 support the waste liquid collection box 4, and the first support frame 2 supports the gas-liquid separation tank 5. The top of the first support frame 2 is connected to the gas-liquid separation tank 5, and the gas-liquid separation tank 5 is connected to the top of the waste liquid collection box 4. After the waste liquid is separated from the gas, it will flow into the waste liquid collection box 4 for collection, which is convenient for distillation and purification of NMP and recycling. The bottoms of the gas-liquid separation tank 5 and the waste liquid collection box 4 are both hemispherical, and the hemispherical design facilitates the complete outflow of liquid without residue.

[0019] A second exhaust pipe 18 is provided on one side of the top of the waste liquid collection box 4. The second exhaust pipe 18 can discharge excess gas in the waste liquid collection box 4 when the waste liquid flows into the waste liquid collection box 4. A first control valve 19 is installed on the second exhaust pipe 18. The first control valve 19 can control the on-off of the second exhaust pipe 18. A liquid level meter is installed in the waste liquid collection box 4 to measure the volume of the waste liquid in the waste liquid collection box 4 for easy recording. The bottom of the waste liquid collection box 4 is connected to the first drain pipe 16. A second control valve 17 is installed on the first drain pipe 16. The second control valve 17 can control the on-off of the first drain pipe 16. The first drain pipe 16 can discharge the waste liquid collected in the waste liquid collection box 4.

[0020] The second support frame 3 includes a support ring and four support plates, the four support plates are evenly distributed on the support ring, and one end of the four support plates is fixedly connected to the support ring, and the other end is fixedly connected to the waste liquid collection box 4. The four support plates are evenly distributed, and can stably connect the support ring and the waste liquid collection box 4, ensuring that the waste liquid collection box 4 is firmly fixed in a designated position, preventing the waste liquid collection box 4 from shaking or shifting during use, and the second support frame 3 can stably support the waste liquid collection box 4.

[0021] The top of the gas-liquid separation tank 5 is connected to the second air inlet pipe 12, the second air inlet pipe 12 is connected to the U-shaped pipe 11, the U-shaped pipe 11 is connected to the first air inlet pipe 10, and a connector 13 is provided at the end of the first air inlet pipe 10. The connector 13 can connect the vacuum pump with the first air inlet pipe 10, so that the vacuum pump can easily pass the NMP waste gas generated during the baking process of the lithium battery through the first air inlet pipe 10, the U-shaped pipe 11 and the second air inlet pipe 12 into the gas-liquid separation tank 5 for treatment. The U-shaped pipe 11 effectively reduces the noise generated when the vacuum pump discharges waste gas, thereby improving the overall working environment quality.

[0022] The bottom of the U-shaped tube 11 is connected to the second drainage pipe 14 , and a third control valve 15 is provided on the second drainage pipe 14 . Water will accumulate at the bottom of the U-shaped tube 11 , and the second drainage pipe 14 can discharge the accumulated water inside the U-shaped tube 11 . The third control valve 15 can control the on and off of the second drainage pipe 14 .

[0023] The top of the gas-liquid separation tank 5 is connected to the air guide cover 6, and the air guide cover 6 is fixedly connected to the rotating disk 8. A cooling water coil 7 is spirally laid on the rotating disk 8. The rotating disk 8 contacts the inner wall of the gas-liquid separation tank 5, so that the exhaust gas entering the gas-liquid separation tank 5 from the second air inlet pipe 12 can rotate along the rotating disk 8 and move downward. Since the vacuum pump extracts the exhaust gas during the baking process, the cooling water coil 7 can exchange heat with the exhaust gas, thereby recovering the heat generated during the baking process and improving the processing efficiency.

[0024] Threaded holes are evenly arranged at the edge of the air guide cover 6, so as to facilitate fixing the air guide cover 6 to the gas-liquid separation tank 5 by bolts. A first exhaust pipe 9 is arranged at the center of the air guide cover 6, one end of which is located above the air guide cover 6, and the other end is located at the bottom of the gas-liquid separation tank 5. The waste gas separated from the liquid will be discharged through the first exhaust pipe 9. A water inlet and a water outlet are respectively arranged on both sides of the first exhaust pipe 9, and the water inlet and the water outlet are respectively connected to the cooling water coil 7. The cooling water enters the cooling water coil 7 through the water inlet to perform heat exchange with the waste gas, thereby condensing the NPM from the waste gas, and the liquid is separated from the gas by the centrifugal force generated by the rotation by moving along the rotating disk 8. The cooling water after the heat exchange flows out through the water outlet into the circulation tower for heat recovery.

[0025] When the integrated water-cooled waste gas purification device provided by the present invention is used, cooling water is first sent into the cooling water coil 7 through the water inlet, and the vacuum pump sends the waste gas generated in the baking process into the gas-liquid separation tank 5 through the first air inlet pipe 10, the U-shaped pipe 11 and the second air inlet pipe 12. The NMP in the waste gas is condensed into liquid, and the waste liquid and the waste gas generate centrifugal force when rotating along the rotating disk 8, thereby separating the gas and liquid. The waste liquid flows into the waste liquid collection box 4 along the bottom of the gas-liquid separation tank 5, and the waste gas is discharged from the gas-liquid separation tank 5 through the first exhaust pipe 9.

[0026] The first control valve 19 on the second exhaust pipe 18 is opened, and when waste liquid flows in, the gas in the waste liquid collection box 4 can be discharged along the second exhaust pipe 18. When the liquid level gauge in the waste liquid collection box 4 shows that the waste liquid in the waste liquid collection box 4 reaches the specified requirement, the second control valve 17 is opened to discharge the waste liquid along the first drain pipe 16. When a lot of water accumulates in the U-shaped tube 11, the third control valve 15 can be opened to allow the accumulated water to flow out along the second drain pipe 14.

[0027] Therefore, the present invention adopts the above-mentioned integrated water-cooled exhaust gas purification device, and the U-shaped tube is set to improve the noise level of the working environment, significantly improve the recovery efficiency of NMP, reduce environmental pollution, save space, reduce maintenance requirements, save human resource investment and maintenance costs, effectively treat exhaust gas and realize resource recycling.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. An integrated water-cooled exhaust gas purification device, characterized in that: It includes a tray, on which a first support frame is provided, the middle part of the first support frame is connected to a waste liquid collection box through a second support frame, the top of the first support frame is connected to a gas-liquid separation tank, the top of the gas-liquid separation tank is connected to a second air inlet pipe, the second air inlet pipe is connected to a U-shaped pipe, the U-shaped pipe is connected to the first air inlet pipe, the top of the gas-liquid separation tank is connected to an air guide upper cover, the air guide upper cover is fixedly connected to a rotating disk, and a cooling water coil is spirally laid on the rotating disk.

2. The integrated water-cooled exhaust gas purification device according to claim 1 is characterized in that: Threaded holes are evenly arranged on the edge of the air guide cover, and a first exhaust pipe is arranged at the center. One end of the first exhaust pipe is located above the air guide cover, and the other end is located at the bottom of the gas-liquid separation tank. Water inlets and outlets are respectively arranged on both sides of the first exhaust pipe, and the water inlets and outlets are respectively connected to the cooling water coil.

3. The integrated water-cooled exhaust gas purification device according to claim 1 is characterized in that: The gas-liquid separation tank is connected to the top of the waste liquid collection box. The bottoms of the gas-liquid separation tank and the waste liquid collection box are both hemispherical. A second exhaust pipe is provided on one side of the top of the waste liquid collection box. A first control valve is installed on the second exhaust pipe. A liquid level meter is installed in the waste liquid collection box. The bottom of the waste liquid collection box is connected to the first drain pipe, and a second control valve is installed on the first drain pipe.

4. The integrated water-cooled exhaust gas purification device according to claim 1 is characterized in that: The second support frame includes a support ring and four support plates. The four support plates are evenly distributed on the support ring, and one end of the four support plates is fixedly connected to the support ring, and the other end thereof is fixedly connected to the waste liquid collection box.

5. The integrated water-cooled exhaust gas purification device according to claim 1 is characterized in that: The bottom of the U-shaped tube is communicated with the second liquid discharge pipe, and the second liquid discharge pipe is provided with a third control valve.

6. The integrated water-cooled exhaust gas purification device according to claim 1 is characterized in that: A connecting piece is provided at the end of the first air inlet pipe.

7. The integrated water-cooled exhaust gas purification device according to claim 1 is characterized in that: A support block is fixedly connected to the tray, and the bottom of the first support frame is connected to the support block through bolts.

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