A volatile organic waste gas catalytic oxidation reaction tower

Abstract

The utility model relates to organic waste gas catalytic oxidation reaction tower technical field discloses a volatile organic waste gas catalytic oxidation reaction tower, including the reaction tower, the inner wall bottom of reaction tower is provided with the filter mechanism, the filter mechanism is used for filtering to the gas, the top fixedly connected with the reaction mechanism of filter mechanism, the reaction mechanism carries out catalytic oxidation to the gas, the filter mechanism includes the fixed net board, the top all fixedly connected with the fan of fixed net board four around, the top fixedly connected with the isolation net board of fixed net board, the inner wall fixedly connected with support assembly of reaction tower near the middle part. In the utility model, the fixed net board is fixed near the bottom of the inner wall of the reaction tower, and the fan fixed at the top of the fixed net board can conduct gas upward, the connecting sleeve can further filter and purify the impurities in the gas, thereby facilitating subsequent catalytic oxidation, and meeting the production demand.

Description

Technical Field

[0001] This utility model relates to the technical field of catalytic oxidation reaction towers for organic waste gas, and in particular to a catalytic oxidation reaction tower for volatile organic waste gas. Background Technology

[0002] Volatile organic compounds (VOCs) are common pollutants in industrial production, widely originating from the coating, printing, chemical, and electronics industries. These gases contain various components such as benzene compounds, esters, and ketones, not only possessing irritating odors but also posing a serious threat to human health. Long-term exposure may lead to respiratory diseases, nervous system damage, and even increase the risk of cancer. Furthermore, VOCs are important precursors to ozone and PM2.5 formation, significantly impacting air quality. In some parts of my country, ozone exceedances caused by VOC emissions have become a major bottleneck for improving air quality in summer. With increasingly stringent environmental regulations, countries are continuously raising their VOC emission standards. my country's "Standard for the Control of Unorganized Emissions of Volatile Organic Compounds" explicitly requires enterprises to adopt efficient treatment measures to ensure stable compliance with VOC emission concentrations. The European Union has imposed even stricter requirements on VOC emission limits and control technologies across various industries. This forces enterprises to upgrade their VOC treatment equipment, necessitating a highly efficient, energy-saving, stable, and safe catalytic oxidation reaction tower to address the shortcomings of existing technologies and meet the dual demands of environmental compliance and production operations.

[0003] Currently, commercially available catalytic oxidation towers for volatile organic waste gas mainly consist of a core catalytic reaction component and a waste gas pretreatment component. In the catalytic oxidation treatment of volatile organic waste gas, filtration is a crucial pre-step to ensure the efficient and stable operation of the subsequent catalytic reaction. However, existing filtration systems in catalytic oxidation towers for volatile organic waste gas generally suffer from poor filtration efficiency, leading to a series of negative impacts on the entire treatment process. Poor filtration primarily manifests as incomplete removal of impurities from the waste gas. Industrial waste gas emissions contain a large amount of dust, paint mist particles, and sticky organic impurities. If filtration is incomplete, these impurities will enter the catalytic oxidation tower with the airflow. Monitoring data from a coating company shows that these impurities far exceed the catalyst's tolerance limit. These unfiltered impurities can severely damage the core components of the catalytic oxidation tower. After entering the catalytic bed, dust and paint mist particles gradually deposit in the pores on the catalyst surface, clogging the catalyst's active sites. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a catalytic oxidation reaction tower for volatile organic waste gas, which aims to improve the shortcomings of traditional catalytic oxidation reaction towers for organic waste gas in terms of poor filtration effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a catalytic oxidation reaction tower for volatile organic waste gas, comprising a reaction tower, wherein a filter mechanism is provided at the bottom of the inner wall of the reaction tower for filtering the gas, and a reaction mechanism is fixedly connected to the top of the filter mechanism for catalytic oxidation of the gas; The filtration mechanism includes a fixed mesh plate, with fans fixedly connected to all four sides of the top of the fixed mesh plate, and an isolation mesh plate fixedly connected to the top of the fixed mesh plate. A support assembly is fixedly connected to the inner wall of the reaction tower near the middle, and a first filter assembly is fixedly connected to the inner wall of the support assembly. A second filter assembly is fixedly connected to the top of the support assembly.

[0006] As a further description of the above technical solution: The reaction mechanism includes a second support plate, which is fixedly connected to the top of the inner wall of the reaction tower. A first connection is fixedly connected to the top four sides of the second support plate. A first catalyst assembly is fixedly connected to the outer wall of the first connection, and a second catalyst assembly is fixedly connected to the outer wall of the first connection near the top.

[0007] As a further description of the above technical solution: The support assembly includes a support plate, which is fixedly connected to the middle of the inner wall of the reaction tower, and conductive pipes are fixedly connected to all four sides of the inner wall of the support plate.

[0008] As a further description of the above technical solution: The first filter assembly includes a filter screen, which is fixed to the middle of the inner wall of the first support plate, and a disassembly sleeve is rotatably connected to the bottom of the outer wall of the first support plate.

[0009] As a further description of the above technical solution: The second filter assembly includes a connecting sleeve, which is fixed to the top of the first support plate. Activated carbon plates are fixedly connected to both the upper and lower ends of the inner wall of the connecting sleeve.

[0010] As a further description of the above technical solution: The first catalytic component includes an alumina catalytic bed, which is fixed to the inner wall of the second support plate. A first fixed cylinder is fixedly connected to the middle of the outer wall of the first connection, and a titanium dioxide catalytic bed is fixedly connected to the inner wall of the first fixed cylinder.

[0011] As a further description of the above technical solution: The second catalytic component includes a fixed cylinder, which is fixed to the outer wall of the first connection near the top. The inner wall of the fixed cylinder is fixedly connected to a connecting shaft, and the outer wall of the connecting shaft is fixedly connected to a composite molecular catalytic bed.

[0012] As a further description of the above technical solution: Handles are fixedly connected to the left and right sides of the middle part of the outer wall of the reaction tower, and air inlet pipes are fixedly connected to the four sides of the outer wall of the reaction tower near the bottom.

[0013] This utility model has the following beneficial effects: 1. In this utility model, a fixed mesh plate is fixed near the bottom of the inner wall of the reaction tower, and a fan fixed at the top of the fixed mesh plate can conduct gas upward. At the same time, the gas is conducted internally through a support plate fixed to the inner wall of the conduction pipe. The filter screen fixed to the inner wall of the conduction pipe can initially filter impurities. The internal cleaning can be achieved by disassembling the sleeve. The activated carbon plate fixed to the support plate has connecting sleeves fixed at both the upper and lower ends of its inner wall. The connecting sleeves can further filter and purify impurities in the gas, thereby facilitating subsequent catalytic oxidation and meeting production requirements.

[0014] 2. In this utility model, a second support plate is fixed to the inner wall of the reaction tower near the top, and a first connector is fixed around the top of the second support plate. The first connector supports the first and second fixed cylinders. The alumina catalytic bed fixed to the inner wall of the second support plate ensures that the waste gas enters the catalyst layer evenly while performing preliminary catalysis. The titanium dioxide catalytic bed fixed inside the first fixed cylinder enhances the decomposition of ester and ketone waste gases, thereby achieving the second stage of catalysis. At the same time, a composite molecular catalytic bed is fixed to the inner wall of the second fixed cylinder to achieve the final catalytic oxidation, thus meeting the waste gas treatment and utilization requirements and satisfying the discharge requirements. Attached Figure Description

[0015] Figure 1 This is a perspective view of the front side of the catalytic oxidation reaction tower for volatile organic waste gas proposed in this utility model; Figure 2 This is a structural diagram of the connecting sleeve of a catalytic oxidation reaction tower for volatile organic waste gas proposed in this utility model; Figure 3 This is a structural diagram of the fixed mesh plate of a catalytic oxidation reaction tower for volatile organic waste gas proposed in this utility model; Figure 4 This is a schematic diagram of the activated carbon plate structure of a catalytic oxidation reaction tower for volatile organic waste gas proposed in this utility model. Figure 5 This is a schematic diagram of the support plate structure of a catalytic oxidation reaction tower for volatile organic waste gas proposed in this utility model. Figure 6 This is a structural diagram of a composite molecular catalytic bed in a catalytic oxidation reaction tower for volatile organic waste gas proposed in this utility model.

[0016] Legend: 1. Reaction tower; 2. Filtration mechanism; 201. Fixed mesh plate; 202. Fan; 203. Isolation mesh plate; 204. Support assembly; 2041. Support plate one; 2042. Conducting pipe; 205. Filtration assembly one; 2051. Disassembly sleeve; 2052. Filter screen; 206. Filtration assembly two; 2061. Activated carbon plate; 2062. Connecting sleeve; 3. Reaction mechanism; 301. Support plate two; 302. Connection one; 303. Catalytic assembly one; 3031. Alumina catalytic bed; 3032. Fixed cylinder one; 3033. Titanium dioxide catalytic bed; 304. Catalytic assembly two; 3041. Fixed cylinder two; 3042. Connecting shaft two; 3043. Composite molecular catalytic bed; 4. Handle; 5. Inlet pipe. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see the appendix Figure 1 - Appendix Figure 3 The present invention provides an embodiment of a catalytic oxidation reaction tower for volatile organic waste gas, comprising a reaction tower 1, a filter mechanism 2 provided at the bottom of the inner wall of the reaction tower 1 for filtering the gas, and a reaction mechanism 3 fixedly connected to the top of the filter mechanism 2 for catalytic oxidation of the gas. The filtration mechanism 2 includes a fixed mesh plate 201, with fans 202 fixedly connected to the top four sides of the fixed mesh plate 201. An isolation mesh plate 203 is fixedly connected to the top of the fixed mesh plate 201. A support assembly 204 is fixedly connected to the inner wall of the reaction tower 1 near the middle. A filter assembly 205 is fixedly connected to the inner wall of the support assembly 204. An isolation mesh plate 203 is also fixedly connected to the top of the fixed mesh plate 201. The isolation mesh plate 203 further ensures the stratified filtration of the gas. In addition, a set of structurally stable support assemblies 204 is fixedly connected to the inner wall of the reaction tower 1 near the middle. A filter assembly 206 is fixedly connected to the top of the support assembly 204. Specifically, a high-efficiency filtration mechanism 2 is installed at the bottom of the inner wall of the reaction tower 1. The main function of the filtration mechanism 2 is to perform detailed and comprehensive filtration of the gas entering the reaction tower 1 to ensure the purity of the gas. At the top of the filtration mechanism 2, a reaction mechanism 3 specifically for gas treatment is connected by a sturdy fixing method. The core function of the reaction mechanism 3 is to perform a highly efficient catalytic oxidation reaction on the filtered gas, thereby improving the gas treatment effect. The structure of the filtration mechanism 2 mainly includes a stable fixed mesh plate 201. Multiple high-efficiency fans 202 are evenly and firmly fixed around the top of the fixed mesh plate 201. The function of these fans 202 is to promote the uniform flow of gas and enhance the filtration effect. A first filter assembly 205 is tightly fixed to the inner wall of the support assembly 204, and a second filter assembly 206 is also fixedly fixed to the top of the support assembly 204. The synergistic effect of these two stages of filter assemblies greatly improves the filtration efficiency and effect of the entire filtration mechanism 2.

[0019] Please see the appendix Figure 1 - Appendix Figure 3 The reaction mechanism 3 includes a second support plate 301, which fixes the inner wall of the reaction tower 1 near the top. The top of the second support plate 301 is fixedly connected to a first connection 302 around the top. The outer wall of the first connection 302 is fixedly connected to a first catalyst component 303, and the outer wall of the first connection 302 is fixedly connected to a second catalyst component 304 near the top. Specifically, the reaction mechanism 3 includes a support plate 2 301, which is firmly installed on the inner wall of the reaction tower 1 and located near the top of the reaction tower 1. Multiple connectors 1 302 are evenly fixedly connected around the top of the support plate 2 301. These connectors 1 302 not only serve as connections but also ensure the stability of the structure. A catalyst component 1 303 is fixedly connected to the outer wall of each connector 1 302. These catalyst components 1 303 play a key catalytic role in the reaction process. In addition, catalyst components 2 304 are fixedly connected to the outer wall of the connector 1 302 near the top. These catalyst components 2 304 further enhance the efficiency and effect of the reaction, ensuring that the entire reaction process can proceed smoothly. The reaction mechanism 3 is not only structurally stable but also efficiently completes the catalytic reaction task.

[0020] Please see the appendix Figure 1 - Appendix Figure 3Support assembly 204 includes a first support plate 2041, which is fixed to the inner wall of reaction tower 1 near the middle. Conductive pipes 2042 are fixedly connected to all four sides of the inner wall of the first support plate 2041. Filter assembly 205 includes a filter screen 2052, which is fixed to the middle of the inner wall of the first support plate 2041. A disassembly sleeve 2051 is rotatably connected to the bottom of the outer wall of the first support plate 2041. Filter assembly 206 includes a connecting sleeve 2062. The bottom of the outer wall of 41 has a rotatable disassembly sleeve 2051, which facilitates quick disassembly and installation during maintenance or replacement of the filter assembly. The second filter assembly 206 includes a connecting sleeve 2062, which is firmly installed on the top of the first support plate 2041 by a fixing device. The connecting sleeve 2062 is fixed to the top of the first support plate 2041, and activated carbon plates 2061 are fixedly connected to the upper and lower ends of the inner wall of the connecting sleeve 2062. Specifically, the support assembly 204 includes a support plate 2041, which is securely mounted on the inner wall of the reaction tower 1 by a fixing device, and its position is close to the middle area of ​​the reaction tower 1. Multiple conduction pipes 2042 are evenly fixedly connected around the inner wall of the support plate 2041. These conduction pipes 2042 are used to transport fluids or gases to ensure the smooth progress of the reaction process. The filter assembly 205 mainly consists of a filter screen 2052, which is securely mounted in the middle position of the inner wall of the support plate 2041 by a fixing device to perform preliminary filtration of the passing fluids or gases. Activated carbon plates 2061 are fixedly connected to both the upper and lower ends of the inner wall of the connecting sleeve 2062. These activated carbon plates 2061 are used to purify fluids or gases to ensure that the final discharged or used fluids or gases reach the required purity.

[0021] Please see the appendix Figure 1 - Appendix Figure 3Catalytic assembly 303 includes an alumina catalyst bed 3031, which is fixed to the inner wall of the support plate 301. A fixing cylinder 3032 is fixedly connected to the middle of the outer wall of the connection 302. A titanium dioxide catalyst bed 3033 is fixedly connected to the inner wall of the fixing cylinder 3032. Catalytic assembly 304 includes a fixing cylinder 3041, which is fixed to the outer wall of the connection 302 near the top. A connecting shaft 3042 is fixedly connected to the inner wall of the fixing cylinder 3041. The composite molecular catalytic bed 3043 is fixedly connected, and the second catalytic component 304 includes a fixed cylinder 3041, which is fixed to the outer wall of the first connection 302 near the top. The inner wall of the fixed cylinder 3041 is fixedly connected to the second connecting shaft 3042, and the outer wall of the second connecting shaft 3042 is fixedly connected to the composite molecular catalytic bed 3043, thereby achieving the effect of multi-stage catalysis. The left and right sides of the middle of the outer wall of the reaction tower 1 are fixedly connected to handles 4, and the outer wall of the reaction tower 1 near the bottom is fixedly connected to the four sides. Specifically, the catalytic component 303 mainly consists of an alumina catalytic bed 3031, which is firmly installed on the inner wall of the support plate 301 to ensure its stability during the catalytic process. In addition, a fixed cylinder 3032 is fixedly connected to the middle of the outer wall of the connection 302, and a titanium dioxide catalytic bed 3033 is fixedly connected to the inner wall of the fixed cylinder 3032, thus forming a multi-layered catalytic structure. Furthermore, handles 4 are provided on both the left and right sides of the middle of the outer wall of the reaction tower 1 for easy handling and movement by operators. At the same time, air inlet pipes 5 are fixedly connected to the four sides of the outer wall of the reaction tower 1 near the bottom to ensure that the reaction gas can enter the interior of the reaction tower 1 evenly, thereby improving the reaction efficiency.

[0022] Working principle: A fixed mesh plate 201 is fixed near the bottom of the inner wall of the reaction tower 1, and a fan 202 fixed at the top of the fixed mesh plate 201 can conduct gas upward. At the same time, the gas is conducted through the support plate 2041 fixed inside the inner wall of the conduction pipe 2042. The filter screen 2052 fixed inside the conduction pipe 2042 can initially filter impurities. The internal part can be cleaned by disassembling the sleeve 2051. The activated carbon plate 2061 fixed to the support plate 2041 has connecting sleeves 2062 fixed at both the upper and lower ends of its inner wall. The connecting sleeves 2062 can further filter and purify impurities in the gas, thereby facilitating subsequent catalytic oxidation and meeting production requirements. A second support plate 301 is fixed to the inner wall of reaction tower 1 near the top. Connectors 302 are fixed around the top of the second support plate 301. Connectors 302 support the first fixed cylinder 3032 and the second fixed cylinder 3041. An alumina catalytic bed 3031 fixed to the inner wall of the second support plate 301 ensures that waste gas enters the catalyst layer evenly during initial catalysis. A titanium dioxide catalytic bed 3033 fixed inside the first fixed cylinder 3032 enhances the decomposition of ester and ketone waste gases, thus achieving secondary catalysis. A composite molecular catalytic bed 3043 is fixed to the inner wall of the second fixed cylinder 3041 to achieve final catalytic oxidation, meeting the waste gas treatment and utilization requirements and satisfying discharge requirements.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A catalytic oxidation reaction tower for volatile organic waste gas, comprising a reaction tower (1), characterized in that: The bottom of the inner wall of the reaction tower (1) is provided with a filter mechanism (2), which is used to filter the gas. The top of the filter mechanism (2) is fixedly connected to a reaction mechanism (3), which catalytically oxidizes the gas. The filtration mechanism (2) includes a fixed mesh plate (201), with fans (202) fixedly connected to the top four sides of the fixed mesh plate (201), and an isolation mesh plate (203) fixedly connected to the top of the fixed mesh plate (201). A support assembly (204) is fixedly connected to the inner wall of the reaction tower (1) near the middle. A filter assembly one (205) is fixedly connected to the inner wall of the support assembly (204), and a filter assembly two (206) is fixedly connected to the top of the support assembly (204).

2. The catalytic oxidation reaction tower for volatile organic waste gas according to claim 1, characterized in that: The reaction mechanism (3) includes a second support plate (301), which is fixedly connected to the top of the inner wall of the reaction tower (1). A first connection (302) is fixedly connected to the top of the second support plate (301) around its perimeter. A first catalyst component (303) is fixedly connected to the outer wall of the first connection (302), and a second catalyst component (304) is fixedly connected to the outer wall of the first connection (302) near its top.

3. The catalytic oxidation reaction tower for volatile organic waste gas according to claim 1, characterized in that: The support assembly (204) includes a support plate (2041), which is fixedly connected to the middle of the inner wall of the reaction tower (1). Conducting pipes (2042) are fixedly connected to all four sides of the inner wall of the support plate (2041).

4. The catalytic oxidation reaction tower for volatile organic waste gas according to claim 3, characterized in that: The first filter assembly (205) includes a filter screen (2052), which is fixed in the middle of the inner wall of the first support plate (2041), and a disassembly sleeve (2051) is rotatably connected to the bottom of the outer wall of the first support plate (2041).

5. The catalytic oxidation reaction tower for volatile organic waste gas according to claim 3, characterized in that: The second filter assembly (206) includes a connecting sleeve (2062), which is fixed to the top of the first support plate (2041). Activated carbon plates (2061) are fixedly connected to the upper and lower ends of the inner wall of the connecting sleeve (2062).

6. The catalytic oxidation reaction tower for volatile organic waste gas according to claim 2, characterized in that: The first catalytic component (303) includes an alumina catalytic bed (3031), which is fixed to the inner wall of the second support plate (301). A first fixed cylinder (3032) is fixedly connected to the middle of the outer wall of the first connection (302), and a titanium dioxide catalytic bed (3033) is fixedly connected to the inner wall of the first fixed cylinder (3032).

7. The catalytic oxidation reaction tower for volatile organic waste gas according to claim 2, characterized in that: The second catalytic component (304) includes a second fixed cylinder (3041), which is fixed to the outer wall of the first connector (302) near the top. The inner wall of the second fixed cylinder (3041) is fixedly connected to a second connecting shaft (3042), and the outer wall of the second connecting shaft (3042) is fixedly connected to a composite molecular catalytic bed (3043).

8. The catalytic oxidation reaction tower for volatile organic waste gas according to claim 1, characterized in that: The outer wall of the reaction tower (1) is fixedly connected to handles (4) on both the left and right sides of the middle part, and the outer wall of the reaction tower (1) is fixedly connected to air inlet pipes (5) around the bottom.

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