A gas treatment device for constant temperature and humidity conditions

Abstract

The application relates to the technical field of gas treatment devices, in particular to a gas treatment equipment for constant-temperature and constant-humidity working conditions, which comprises a waste gas treatment tower, a spraying circulating structure arranged in the waste gas treatment tower and a gas treatment structure; the waste gas treatment tower comprises a tower body, the bottom of the tower body is provided with a liquid pool; the spraying circulating structure comprises a circulating spray pipe arranged in the waste gas treatment tower, a water supplement spray pipe and a circulating water tank connected to the circulating spray pipe, the circulating spray pipe and the water supplement spray pipe are directed towards the liquid pool, the circulating water tank is communicated with the liquid pool, and the circulating water tank is provided with a detection assembly for detecting the state of liquid; the gas treatment structure comprises a treatment assembly for treating gas and a monitoring assembly. The spraying circulating structure can spray gas and detect and discharge waste liquid, so that the accumulation of waste liquid does not affect the gas treatment quality; the gas treatment structure can treat gas to meet the constant-temperature and constant-humidity environment, so that the treatment equipment effectively adapts to the constant-temperature and constant-humidity process requirements.

Description

Technical Field

[0001] This application relates to the field of gas processing equipment technology, and in particular to a gas processing device for constant temperature and humidity conditions. Background Technology

[0002] In the lithium battery industry, coating lines generate a large amount of organic waste gas during production, which needs to be treated before it can be discharged. Due to the restrictions on organic emission standards, most coating lines adopt a treatment method of 90% recirculation and 10% external discharge with pressure regulation. This method can both recover heat from the waste gas and ensure the treatment effect of the discharged waste gas.

[0003] Depending on the process, some coating lines, such as diaphragm coating lines, require a constant temperature and humidity environment. This means that a constant temperature and humidity environment needs to be maintained within the oven to ensure coating quality. Conventional ovens are typically connected to external temperature and humidity control air handling units (such as temperature and humidity units) to process the recirculated air before it is returned to the oven. However, the recirculated air contains residual impurities. During processing within the temperature and humidity control unit, these impurities continuously adhere to and accumulate, forming waste liquid. Over time, this waste liquid can affect the equipment's operation and the quality of the return air, leading to high maintenance difficulty and operating costs, making it unsuitable for constant temperature and humidity conditions. Furthermore, these temperature and humidity control units are generally horizontally installed and need to be separately installed and connected from the oven, which not only makes debugging and adjustment difficult but also requires a significant amount of space. Utility Model Content

[0004] The purpose of this application is to provide a gas handling device for constant temperature and humidity conditions, aiming to improve the problem that conventional constant temperature and humidity air handling devices in related technologies are difficult to adapt to the process requirements of constant temperature and humidity conditions in ovens, so that the gas handling device can be adapted to constant temperature and humidity conditions, and has a compact structure that is easy to control and adjust.

[0005] This application provides a gas treatment device for constant temperature and humidity conditions, including an exhaust gas treatment tower, a spray circulation structure disposed on the exhaust gas treatment tower, and a gas treatment structure; the exhaust gas treatment tower includes a tower body, and a liquid accumulation tank is provided at the bottom of the tower body; the spray circulation structure includes a circulating spray pipe disposed on the exhaust gas treatment tower, a water replenishment spray pipe, and a circulating water tank connected to the circulating spray pipe, the circulating spray pipe and the water replenishment spray pipe facing the liquid accumulation tank, the circulating water tank being connected to the liquid accumulation tank, and the circulating water tank being provided with a detection component for detecting the liquid state; the gas treatment structure includes a treatment component for treating gas and a monitoring component, the treatment component being disposed along the height direction of the tower body.

[0006] Furthermore, the spray circulation structure also includes a waste liquid collection tank, and the circulating water tank is equipped with a connecting pipe and a circulating water pump. The connecting pipe connects the circulating spray pipe and the waste liquid collection tank.

[0007] Furthermore, the connecting pipeline includes a circulation pipeline section and an external discharge pipeline section. The circulation pipeline section is connected to the circulation spray pipe, and the external discharge pipeline section is connected to the waste liquid collection tank. A pneumatic ball valve switch is installed in the external discharge pipeline section.

[0008] Furthermore, the detection components include a level gauge, a conductivity meter, and a concentration meter disposed in the circulating water tank.

[0009] Furthermore, the treatment component is located on the side of the spray circulation structure away from the liquid accumulation tank, and the treatment component includes a plurality of wire mesh demisters, surface coolers, heaters, and primary and secondary filters arranged along the height direction of the tower body.

[0010] Furthermore, the monitoring component includes several temperature and humidity sensors and a differential pressure sensor. The temperature and humidity sensors are located between the wire mesh demister, the surface cooler, the heater, and the primary and secondary filters; the differential pressure sensor is located on one side of the primary and secondary filters.

[0011] The beneficial effects of this application are: 1. This application discloses a gas treatment device for constant temperature and humidity conditions. It comprises a circulating spray mechanism and a gas treatment structure within a waste gas treatment tower. Organic waste gas generated by the coating line is introduced into the tower, passing through the spray circulation structure and the gas treatment structure. The spray circulation structure removes impurities from the waste gas by spraying it through circulating spray pipes. Impurities accumulate in a liquid collection tank and are then introduced into a circulating water tank. A detection component monitors the liquid state in the circulating water tank, allowing for convenient treatment and discharge of the water or replenishment of external purified water via a water replenishment spray pipe, thus ensuring the quality of gas treatment. The gas treatment structure, through a treatment component and a monitoring component, treats the gas to adapt to constant temperature and humidity conditions. The gas treatment device allows for the detection and discharge of accumulated waste liquid, preventing its accumulation from affecting gas treatment quality. Furthermore, the vertical structure of the waste gas treatment tower allows it to be installed on one side of an oven, resulting in a compact overall structure and saving space.

[0012] 2. A gas treatment device for constant temperature and humidity conditions according to this application has a spray circulation structure with a waste liquid collection tank set on one side of the circulating water tank. The circulating water tank is connected to the waste liquid collection tank through an external discharge pipe section. When the detection component detects that the liquid condition is not good, the accumulated waste liquid can be automatically discharged and collected into the waste liquid collection tank by controlling the pneumatic ball valve to facilitate treatment. When the liquid level in the circulating water tank drops, pure water is replenished through the water replenishment spray pipe, making the gas treatment device easy to use and easy for operators to control.

[0013] 3. A gas treatment device for constant temperature and humidity conditions according to this application, wherein the treatment component further treats the sprayed gas by setting up a wire mesh demister, a surface cooler, a heater, and a primary and secondary efficiency filter, thereby ensuring that the gas meets the required constant temperature and humidity process requirements; at the same time, the treatment component works in conjunction with a monitoring component, which can monitor the gas temperature, humidity, and pressure difference in real time, thereby enabling convenient control of the treatment component based on the gas temperature, humidity, and pressure difference, ensuring the gas treatment effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a gas processing device for constant temperature and humidity conditions provided in an embodiment of this application; Figure 2 This is a schematic diagram of the spray circulation structure in the embodiments of this application; Figure 3 This is a schematic diagram of the gas processing structure in an embodiment of this application.

[0015] Explanation of reference numerals in the attached figures: 1. Waste gas treatment tower; 11. Tower body; 111. Liquid collection tank; 12. Air inlet; 13. Air outlet; 2. Spray circulation structure; 21. Circulating spray pipe; 22. Water replenishment spray pipe; 23. Circulating water tank; 231. Connecting pipe; 232. Circulating water pump; 24. Detection components; 241. Liquid level gauge; 242. Conductivity meter; 243. Concentration meter; 25. Waste liquid collection tank; 3. Gas treatment structure; 31. Treatment components; 311. Wire mesh demister; 312. Surface cooler; 313. Heater; 314. Primary and secondary filters; 32. Monitoring components; 321. Temperature and humidity sensor; 322. Differential pressure sensor. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0017] It should be noted that although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0019] Reference Figure 1 as well as Figure 2 This application provides a gas treatment device for constant temperature and humidity conditions, including a waste gas treatment tower 1, a spray circulation structure 2 disposed in the waste gas treatment tower 1, and a gas treatment structure 3. When the gas treatment device is running, the gas generated by the coating line is introduced into the waste gas treatment tower 1. The waste gas passes through the spray circulation structure 2 and the gas treatment structure 3. The spray circulation structure 2 sprays the waste gas, and the gas treatment structure 3 treats the waste gas to adapt it to constant temperature and humidity conditions.

[0020] Specifically, the waste gas treatment tower 1 includes a tower body 11, which is vertically arranged. The bottom of the tower body 11 has a liquid accumulation tank 111. The tower body 11 has an air inlet 12 and an air outlet 13, with the air inlet 12 located below the tower body 11 and the air outlet 13 located above the tower body 11. A spray circulation structure 2 and a gas treatment structure 3 are located between the air inlet 12 and the air outlet 13. After the waste gas enters the tower body 11 through the air inlet 12, the spray circulation structure 2 first sprays the waste gas to remove impurities. Then, the waste gas passes through the gas treatment structure 3, which performs cooling, heating, and filtration on the waste gas to further remove impurities and provide constant temperature and humidity treatment to meet the process requirements.

[0021] The spray circulation structure 2 includes a circulating spray pipe 21, a water replenishment spray pipe 22, and a circulating water tank 23 connected to the circulating spray pipe 21, all installed in the exhaust gas treatment tower 1. The circulating spray pipe 21 and the water replenishment spray pipe 22 face the air inlet 12 and the liquid accumulation tank 111. When exhaust gas enters from the air inlet 12, the circulating spray pipe 21 and the water replenishment spray pipe 22 spray water mist onto the exhaust gas to remove impurities. After the water mist comes into contact with the exhaust gas, it falls into the liquid accumulation tank 111 and accumulates. The circulating water tank 23 is located on one side of the liquid accumulation tank 111 and is connected to the liquid accumulation tank 111. The circulating water tank 23 is equipped with a detection component 24 for detecting the liquid state. In this embodiment, the detection component 24 includes a level gauge 241, a conductivity meter 242, and a concentration meter 243 installed in the circulating water tank 23. The level gauge 241 is used to detect the liquid level in the circulating water tank 23, the conductivity meter 242 is used to detect the conductivity in the circulating water tank 23, and the concentration meter 243 is used to detect the VOC concentration in the circulating water tank 23. The detection component 24 can conveniently and quickly determine the liquid state in the circulating water tank 23. Based on the liquid state, the operator can conveniently process the liquid in the liquid accumulation tank 111 accordingly. It is understood that the detection component 24 may further include other detection instruments, which can be selected according to actual needs.

[0022] When the VOC concentration in the circulating water tank 23 is high, i.e., the liquid condition is poor, the water mist sprayed by the circulating spray pipe 21 has a limited effect on the exhaust gas, affecting the return air quality. Therefore, it is necessary to replace the liquid in the circulating water tank 23 and the liquid accumulation tank 111. To this end, the spray circulation structure 2 also includes a waste liquid collection tank 25. The circulating water tank 23 is equipped with a connecting pipe 231 and a circulating water pump 232. The connecting pipe 231 connects the circulating spray pipe 21 and the waste liquid collection tank 25. In this embodiment, the connecting pipe 231 includes a circulating pipe section and an external discharge pipe section. The circulating pipe section connects to the circulating spray pipe 21, and the external discharge pipe section connects to the waste liquid collection tank 25. A pneumatic ball valve switch is installed in the external discharge pipe section. When the detection component 24 detects that the liquid condition is poor, the external discharge pipe section can be opened by controlling the pneumatic ball valve switch, allowing the accumulated waste liquid to be automatically discharged and collected into the waste liquid collection tank 25, thus facilitating the operator's treatment. When the liquid level in the circulating water tank 23 decreases, the water replenishment spray pipe 22 draws pure water from an external water source and sprays it out to spray the exhaust gas and replenish water.

[0023] Reference Figure 3After being sprayed by the spray circulation structure 2, the exhaust gas enters the gas treatment structure 3. The gas treatment structure 3 includes a treatment component 31 and a monitoring component 32 for treating the gas. The treatment component 31 is arranged along the height direction of the tower body 11. The treatment component 31 is located on the side of the spray circulation structure 2 away from the liquid accumulation tank 111. The treatment component 31 includes several wire mesh demisters 311, surface coolers 312, heaters 313, and primary and secondary filters 314 arranged along the height direction of the tower body 11. In this embodiment, there are two wire mesh demisters 311. The two wire mesh demisters 311 are located between the spray circulation structure 2 and the surface cooler 312, and between the surface cooler 312 and the electric heater 313, respectively. The surface cooler 312 is a finned surface cooler 312 with chilled water inlet and outlet. The heater 313 is a nickel alloy electric heater 313. The monitoring component 32 works in conjunction with the processing component 31 to further treat the gas. The processing component 31 includes several temperature and humidity sensors 321 and a differential pressure sensor 322. The temperature and humidity sensors 321 are located between the wire mesh demister 311, the surface cooler 312, the heater 313, and the primary and secondary filters 314. In this embodiment, there are five temperature and humidity sensors 321, located between the wire mesh demister 311, the surface cooler 312, the heater 313, and the primary and secondary filters 314. The differential pressure sensor 322 is located on one side of the primary and secondary filters 314. Through the temperature and humidity sensors 321 and the differential pressure sensor 322, the temperature, humidity, and differential pressure of the exhaust gas as it passes through the processing component 31 can be easily determined, facilitating the corresponding control of the processing component 31 to ensure that the exhaust gas better meets the process requirements of constant temperature and humidity.

[0024] When the exhaust gas passes through the wire mesh demister 311, it intercepts water droplets within the exhaust gas. The exhaust gas then enters the surface cooler 312, where it is cooled to the dew point temperature corresponding to the humidity level. The exhaust gas then re-enters the wire mesh demister 311 for secondary interception. The surface cooler 312 adjusts the chilled water circulation volume based on data from the temperature and humidity sensor 321. The electric heater 313 heats the gas to the target temperature, and the heating power of the electric heater is adjusted based on data from the temperature and humidity sensor 321. Finally, the gas undergoes filtration through the primary and secondary efficiency filters 314, meeting the return air requirements, and is then discharged from the outlet 13, returning to the coating machine oven for reuse according to a preset ratio.

[0025] Exemplary embodiments of this disclosure have been specifically shown and described above. It should be understood that this disclosure is not limited to the detailed structures, arrangements, or implementations described herein; rather, this disclosure is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended claims.

Claims

1. A gas handling device for use under constant temperature and humidity conditions, characterized in that, The system includes an exhaust gas treatment tower (1), a spray circulation structure (2) disposed on the exhaust gas treatment tower (1), and a gas treatment structure (3); the exhaust gas treatment tower (1) includes a tower body (11), and the bottom of the tower body (11) has a liquid accumulation pool (111); the spray circulation structure (2) includes a circulating spray pipe (21), a water replenishment spray pipe (22), and a circulating water tank (23) connected to the circulating spray pipe (21) disposed on the exhaust gas treatment tower (1), the circulating spray pipe (21) and the water replenishment spray pipe (22) facing the liquid accumulation pool (111), the circulating water tank (23) being connected to the liquid accumulation pool (111), and the circulating water tank (23) being provided with a detection component (24) for detecting the liquid state; the gas treatment structure (3) includes a treatment component (31) for treating gas and a monitoring component (32), the treatment component (31) being disposed along the height direction of the tower body (11).

2. The gas handling equipment for constant temperature and humidity conditions according to claim 1, characterized in that, The spray circulation structure (2) also includes a waste liquid collection tank (25). The circulating water tank (23) is provided with a connecting pipe (231) and a circulating water pump (232). The connecting pipe (231) connects the circulating spray pipe (21) and the waste liquid collection tank (25).

3. A gas handling device for constant temperature and humidity conditions according to claim 2, characterized in that, The connecting pipe (231) includes a circulation pipe section and an external discharge pipe section. The circulation pipe section is connected to the circulation spray pipe (21), and the external discharge pipe section is connected to the waste liquid collection tank (25). A pneumatic ball valve switch is installed in the external discharge pipe section.

4. A gas handling device for constant temperature and humidity conditions according to any one of claims 1-3, characterized in that, The detection component (24) includes a level gauge (241), a conductivity meter (242), and a concentration meter (243) installed in the circulating water tank (23).

5. A gas handling device for constant temperature and humidity conditions according to claim 1, characterized in that, The processing component (31) is located on the side of the spray circulation structure (2) away from the liquid accumulation tank (111). The processing component (31) includes a plurality of wire mesh demisters (311), surface coolers (312), heaters (313), and primary and secondary filters (314) arranged along the height direction of the tower body (11).

6. A gas handling device for constant temperature and humidity conditions according to claim 5, characterized in that, The monitoring component (32) includes a plurality of temperature and humidity sensors (321) and a differential pressure sensor (322). The plurality of temperature and humidity sensors (321) are located between the wire mesh demister (311), the surface cooler (312), the heater (313), and the primary and secondary filters (314); the differential pressure sensor (322) is located on one side of the primary and secondary filters (314).

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