Catalytic oxidation equipment integrating heat exchange and preheating functions

Abstract

The utility model discloses a catalytic oxidation equipment of integrated heat exchange and preheating function relates to catalytic oxidation technical field, including the shell, be provided with the preheating cavity on the shell, the front end of preheating cavity is provided with the air guide piece, the shape of air guide piece is set as the horn shape of front narrow back wide, the inside of preheating cavity is provided with the buffer board, in the utility model, after the filtration of exhaust gas filter device, through the exhaust gas inlet pipe and the horn shape air guide piece of front narrow back wide enters the preheating cavity, and the flow rate is adjusted to the steady flow of air guide piece, and the exhaust gas is smoothly entered. After the impact of exhaust gas buffer board, the buffer spring in telescopic pipe, damper cooperate arc shape elastic piece buffer vibration, reduce the stability of the influence equipment internal component, the round hole of buffer board disperses airflow, and the inclined hole of fixed plate guides airflow diffusion, makes exhaust gas distribute evenly in preheating cavity, and fully contacts heat, provides stable preheating condition for the catalytic oxidation reaction of combustion chamber, and helps to improve the reaction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of catalytic oxidation technology, specifically a catalytic oxidation device that integrates heat exchange and preheating functions. Background Technology

[0002] Catalytic oxidation equipment is an environmentally friendly treatment device that utilizes the principle of catalytic reaction to treat organic waste gas. Its core function is to lower the oxidation reaction temperature of organic pollutants through a catalyst, allowing the waste gas to undergo oxidative decomposition under relatively mild conditions, transforming it into harmless carbon dioxide and water, thereby achieving waste gas purification. The equipment typically first recovers heat from the high-temperature exhaust gas after the reaction through heat exchange to preheat the waste gas to be treated, reducing energy consumption. Then, a preheating module raises the waste gas temperature to the catalyst activation temperature before it enters the reaction chamber, where purification is completed under the action of the catalyst. It is widely used in waste gas treatment in industries such as chemical, coating, printing, and pharmaceutical, and features high purification efficiency, low energy consumption, and stable operation.

[0003] Currently, existing catalytic oxidation equipment typically has preheating and heat exchange functions to improve waste gas treatment efficiency and save energy. However, some shortcomings still exist in actual use. Some equipment lacks an effective airflow regulation structure inside the preheating chamber, resulting in uneven flow velocity of waste gas after entering the preheating chamber. This can easily lead to localized airflow concentration, causing insufficient heat contact between the waste gas and the heat inside the preheating chamber, thus affecting the preheating effect. At the same time, the impact generated when the waste gas enters the preheating chamber can cause vibration, which may affect the stability of the internal components of the equipment in the long run, thereby reducing the overall operating efficiency and service life of the equipment. Utility Model Content

[0004] The purpose of this invention is to provide a catalytic oxidation device that integrates heat exchange and preheating functions to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides a catalytic oxidation device integrating heat exchange and preheating functions, including a shell, a preheating chamber provided on the shell, an air guide provided at the front end of the preheating chamber, the air guide being shaped like a trumpet, narrow at the front and wide at the back, a buffer plate provided inside the preheating chamber, a fixed plate provided on one side of the buffer plate, a circular plate fixedly installed on both the buffer plate and the fixed plate, a telescopic tube and multiple elastic elements fixedly installed between the two circular plates, the elastic elements being arc-shaped, the telescopic tube consisting of a sleeve and a telescopic rod, a buffer spring and a damper fixedly installed between the sleeve and the telescopic rod, the buffer spring being sleeved on the outside of the damper, multiple circular holes provided on the buffer plate, and multiple oblique holes provided on the fixed plate.

[0006] Furthermore, the elastic element is uniformly arranged in a ring shape between the two circular plates, and the material of the elastic element is spring steel.

[0007] Furthermore, the fixing plate is configured as a frustum shape, and the fixing plate is narrower at the front and wider at the back.

[0008] Furthermore, the inclined direction of the oblique holes on the fixing plate is set from the center to the outer circumference.

[0009] Furthermore, a filter device is fixedly installed on the outer wall of the housing away from the air guide, and an exhaust gas inlet pipe is provided on the side of the filter device away from the housing.

[0010] Furthermore, a combustion chamber is provided on one side of the preheating chamber, a first through pipe is fixedly installed between the preheating chamber and the combustion chamber, a heat exchange chamber is provided on one side of the combustion chamber, a second through pipe is provided between the combustion chamber and the heat exchange chamber, and an exhaust pipe is fixedly installed on the side of the heat exchange chamber away from the second through pipe, the exhaust pipe extending to the outside of the outer shell.

[0011] Furthermore, a copper alloy tube is fixedly installed between the preheating chamber and the heat exchange chamber, and an induced draft fan is fixedly installed on the copper alloy tube.

[0012] Furthermore, the copper alloy tube is provided with thermal insulation cotton on its exterior.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, after being filtered by the filtration device, the exhaust gas enters the preheating chamber through the exhaust gas inlet pipe and the trumpet-shaped air guide that is narrow at the front and wide at the back. The air guide stabilizes the flow rate, ensuring a smooth entry of the exhaust gas. After the exhaust gas impacts the buffer plate, the buffer spring and damper inside the telescopic pipe, together with the arc-shaped elastic element, buffer the vibration, reducing the impact on the stability of the internal components of the equipment. The round holes of the buffer plate disperse the airflow, and the oblique holes of the fixed plate guide the airflow diffusion, allowing the exhaust gas to be evenly distributed in the preheating chamber and fully contact the heat, providing stable preheating conditions for the catalytic oxidation reaction in the combustion chamber and helping to improve the reaction efficiency.

[0014] 2. In this utility model, the elastic element made of spring steel has good elasticity and fatigue resistance. It is uniformly arranged in a ring between two circular plates. Through elastic deformation, it buffers the vibration of the buffer plate and the fixed plate in multiple directions. It is not easily damaged after long-term use, extends the service life, and ensures the stable operation of the buffer assembly, making the flow of exhaust gas in the preheating chamber more stable. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the internal structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the telescopic tube and the circular plate in this utility model; Figure 3 This is a schematic diagram of the connection structure between the buffer spring and the damper in this utility model; Figure 4 for Figure 1 Enlarged view of the structure at point A in the middle.

[0016] In the diagram: 1. Outer shell; 2. Preheating chamber; 3. Combustion chamber; 4. Heat exchange chamber; 5. Air guide; 6. Buffer plate; 7. Fixing plate; 8. Telescopic pipe; 9. Circular plate; 10. Elastic component; 11. Buffer spring; 12. Damper; 13. Copper alloy pipe; 14. Exhaust fan; 15. Filter device. 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 Figures 1-4 This utility model provides a technical solution: See Figures 1-4 As shown, a catalytic oxidation device integrating heat exchange and preheating functions includes a shell 1, a preheating chamber 2 on the shell 1, an air guide 5 at the front end of the preheating chamber 2, the air guide 5 being shaped like a trumpet with a narrow front and a wide rear, a buffer plate 6 inside the preheating chamber 2, a fixing plate 7 on one side of the buffer plate 6, and circular plates 9 fixedly installed on both the buffer plate 6 and the fixing plate 7, a telescopic tube 8 and multiple elastic elements 10 fixedly installed between the two circular plates 9, the elastic elements 10 being arc-shaped, the telescopic tube 8 consisting of a sleeve and a telescopic rod, a buffer spring 11 and a damper 12 fixedly installed between the sleeve and the telescopic rod, the buffer spring 11 being sleeved on the outside of the damper 12, multiple circular holes on the buffer plate 6, and multiple oblique holes on the fixing plate 7.

[0019] It should be noted that the buffer plate 6 is located inside the preheating chamber 2, while the fixing plate 7 is fixed inside the preheating chamber 2.

[0020] The exhaust gas enters from the filter device 15 through the exhaust gas inlet pipe, passes through the filter first, and then enters the preheating chamber 2 through the air guide 5. The air guide 5 has a trumpet-shaped structure that is narrow at the front and wide at the back, which can play a preliminary role in stabilizing the flow of the exhaust gas entering the preheating chamber 2. This allows the exhaust gas, which may have uneven flow rate, to gradually adjust its flow rate as it passes through the air guide 5, and enter the subsequent areas more smoothly.

[0021] The exhaust gas entering the preheating chamber 2 impacts the buffer plate 6, and the telescopic tube 8 and multiple arc-shaped elastic elements 10 between the buffer plate 6 and the fixed plate 7 begin to function. The buffer spring 11 and damper 12 in the telescopic tube 8, together with the arc-shaped elastic elements 10, buffer the vibration generated by the exhaust gas impact, reducing the impact on the stability of the internal components of the equipment.

[0022] Meanwhile, the multiple round holes on the buffer plate 6 and the multiple oblique holes on the fixed plate 7 divert and guide the exhaust gas, making the exhaust gas more evenly distributed in the preheating chamber 2. The multiple round holes on the buffer plate 6 can disperse the concentrated exhaust gas into multiple small airflows, avoiding excessively fast or slow local airflow velocities. The multiple oblique holes on the fixed plate 7, which slope from the center to the periphery, can guide the airflow passing through the buffer plate 6 to diffuse in all directions, further disrupting the original concentrated flow trend of the airflow. This makes the flow velocity of the airflow at different positions in the preheating chamber 2 more balanced, and the exhaust gas is more evenly distributed in the preheating chamber 2. This allows for more complete contact with the heat in the preheating chamber 2, providing more stable preheating conditions for the subsequent catalytic oxidation reaction in the combustion chamber 3, which helps to improve the overall reaction efficiency.

[0023] The exhaust gas then enters the combustion chamber 3 through the first pipe for catalytic oxidation. The reacted gas then enters the heat exchange chamber 4 through the second pipe and is finally discharged from the exhaust pipe extending outside the outer casing 1.

[0024] See Figure 4 The elastic element 10 is evenly arranged in a ring between the two circular plates 9, and the material of the elastic element 10 is spring steel.

[0025] The elastic element 10 is made of spring steel, which has good elasticity and fatigue resistance. When the exhaust gas impacts the buffer plate 6, it can effectively buffer the vibration through its own elastic deformation. It is evenly arranged in a ring between the two circular plates 9, which can buffer the vibration between the buffer plate 6 and the fixed plate 7 from multiple angles and positions, making the buffering effect more balanced. At the same time, the spring steel material can also ensure that the elastic element 10 is not easily damaged by frequent elastic deformation during long-term use, thus extending its service life and ensuring the stable operation of the entire buffer assembly, making the flow of exhaust gas in the preheating chamber 2 more stable.

[0026] See Figure 1 The fixing plate 7 is set in the shape of a frustum, and the fixing plate 7 is set to be narrower at the front and wider at the back.

[0027] The fixed plate 7 is shaped like a frustum, narrow at the front and wide at the back. This shape guides the exhaust gas passing through the buffer plate 6, allowing the exhaust gas to diffuse from the narrower front end to the wider rear end. This results in a wider distribution of the exhaust gas within the preheating chamber 2 and also helps to further stabilize the airflow, reducing turbulence and excessively high local flow rates during the exhaust gas flow process. This allows the exhaust gas to come into more uniform contact with the heat in the preheating chamber 2, improving the preheating effect and preparing it more fully for the subsequent catalytic oxidation reaction in the combustion chamber 3.

[0028] See Figure 1 The inclined direction of the oblique holes on the fixing plate 7 is from the center to the outer circumference.

[0029] The oblique holes on the fixed plate 7 are inclined from the center to the outer circumference, which can guide the exhaust gas to diffuse in the circumferential direction of the preheating chamber 2, breaking the tendency of exhaust gas to concentrate in the central area and allowing the airflow to be more evenly distributed in different positions in the preheating chamber 2. At the same time, the airflow velocity can be further adjusted to reduce local velocity differences, so that the exhaust gas can have more sufficient contact with the heat in the preheating chamber 2, improve the uniformity of preheating, and provide more stable conditions for the subsequent reaction in the combustion chamber 3.

[0030] See Figure 1 A filter device 15 is fixedly installed on the outer wall of the outer casing 1 away from the air guide 5, and an exhaust gas inlet pipe is provided on the side of the filter device 15 away from the outer casing 1.

[0031] The filter device 15 is fixed on the outer wall of the housing 1 away from the air guide 5, and an exhaust gas inlet pipe is set on the side away from the housing 1. This allows the exhaust gas to be filtered before entering the preheating chamber 2, intercepting particulate matter and other impurities contained in the exhaust gas. This prevents these impurities from adhering to the buffer plate 6, fixed plate 7 and other components in the preheating chamber 2, reducing component blockage and wear. At the same time, it can also prevent impurities from entering the combustion chamber 3 and affecting the normal progress of the catalytic oxidation reaction, ensuring the stable operation of all components of the equipment.

[0032] See Figure 1 A combustion chamber 3 is provided on one side of the preheating chamber 2. A first through pipe is fixedly installed between the preheating chamber 2 and the combustion chamber 3. A heat exchange chamber 4 is provided on one side of the combustion chamber 3. A second through pipe is provided between the combustion chamber 3 and the heat exchange chamber 4. An exhaust pipe is fixedly installed on the side of the heat exchange chamber 4 away from the second through pipe. The exhaust pipe extends to the outside of the outer shell 1.

[0033] The preheating chamber 2 is connected to the combustion chamber 3 through the first pipe, and the combustion chamber 3 is connected to the heat exchange chamber 4 through the second pipe. The exhaust pipe of the heat exchange chamber 4 extends to the outside of the outer shell 1, which allows the exhaust gas to flow in an orderly manner from the preheating chamber 2 to the combustion chamber 3 and then to the heat exchange chamber 4. This ensures that the exhaust gas is preheated before entering the combustion chamber 3 for catalytic oxidation. The high-temperature gas after the reaction can enter the heat exchange chamber 4 to complete heat recovery, and finally, the exhaust gas that meets the standards is discharged through the exhaust pipe. This not only ensures the smoothness of the exhaust gas treatment process, but also realizes the rational utilization of heat. At the same time, the fixed installation of each pipe and the exhaust pipe can reduce gas leakage and ensure the stability of equipment operation.

[0034] See Figure 1 A copper alloy tube 13 is fixedly installed between the preheating chamber 2 and the heat exchange chamber 4, and an induced draft fan 14 is fixedly installed on the copper alloy tube 13.

[0035] The copper alloy tube 13 is fixed between the preheating chamber 2 and the heat exchange chamber 4. Copper alloy has good thermal conductivity and can efficiently transfer the waste heat recovered in the heat exchange chamber 4 to the preheating chamber 2, helping to heat the waste gas to be treated. The induced draft fan 14 is fixed on the copper alloy tube 13, which can enhance the gas flow dynamics, allowing the waste heat in the heat exchange chamber 4 to flow more smoothly to the preheating chamber 2, improving the heat utilization efficiency. At the same time, it can help stabilize the airflow state in the preheating chamber 2, ensuring that the waste gas is preheated more evenly, and providing a stable environment for the subsequent catalytic oxidation reaction in the combustion chamber 3.

[0036] See Figure 1 The copper alloy tube 13 is covered with thermal insulation cotton.

[0037] The insulation cotton installed on the outside of the copper alloy tube 13 can reduce the heat loss of the copper alloy tube 13 during the heat transfer process, allowing more waste heat recovered from the heat exchange chamber 4 to be retained in the pipe and transferred to the preheating chamber 2. This avoids heat loss due to the influence of ambient temperature, ensures that the preheating chamber 2 can obtain enough heat to heat the waste gas to be treated, and also reduces the impact of heat leakage on the surrounding components of the equipment, ensuring heat transfer efficiency and equipment operation stability.

[0038] 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 catalytic oxidation device integrating heat exchange and preheating functions, comprising a shell (1), characterized in that: The outer shell (1) is provided with a preheating chamber (2), and the front end of the preheating chamber (2) is provided with an air guide (5). The air guide (5) is shaped like a trumpet with a narrow front and a wide back. The interior of the preheating chamber (2) is provided with a buffer plate (6). A fixed plate (7) is provided on one side of the buffer plate (6). A circular plate (9) is fixedly installed on both the buffer plate (6) and the fixed plate (7). A telescopic tube (8) and a number of elastic elements (10) are fixedly installed between the two circular plates (9). The elastic element (10) is arc-shaped. The telescopic tube (8) is composed of a sleeve and a telescopic rod. A buffer spring (11) and a damper (12) are fixedly installed between the sleeve and the telescopic rod. The buffer spring (11) is sleeved on the outside of the damper (12). A number of circular holes are opened on the buffer plate (6), and a number of oblique holes are provided on the fixed plate (7).

2. The catalytic oxidation device integrating heat exchange and preheating functions as described in claim 1, characterized in that: The elastic element (10) is uniformly arranged in a ring between the two circular plates (9), and the material of the elastic element (10) is spring steel.

3. The catalytic oxidation device integrating heat exchange and preheating functions as described in claim 2, characterized in that: The fixing plate (7) is configured as a frustum, and the fixing plate (7) is narrower at the front and wider at the back.

4. The catalytic oxidation device integrating heat exchange and preheating functions as described in claim 3, characterized in that: The inclined direction of the oblique hole on the fixing plate (7) is from the center to the outer wall of the circumference.

5. The catalytic oxidation device integrating heat exchange and preheating functions as described in claim 4, characterized in that: A filter device (15) is fixedly installed on the outer wall of the outer shell (1) away from the air guide (5), and an exhaust gas inlet pipe is provided on the side of the filter device (15) away from the outer shell (1).

6. The catalytic oxidation device integrating heat exchange and preheating functions as described in claim 5, characterized in that: A combustion chamber (3) is provided on one side of the preheating chamber (2). A first through pipe is fixedly installed between the preheating chamber (2) and the combustion chamber (3). A heat exchange chamber (4) is provided on one side of the combustion chamber (3). A second through pipe is provided between the combustion chamber (3) and the heat exchange chamber (4). An exhaust pipe is fixedly installed on the side of the heat exchange chamber (4) away from the second through pipe. The exhaust pipe extends to the outside of the outer shell (1).

7. The catalytic oxidation device integrating heat exchange and preheating functions as described in claim 6, characterized in that: A copper alloy tube (13) is fixedly installed between the preheating chamber (2) and the combustion chamber (3), and an induced draft fan (14) is fixedly installed on the copper alloy tube (13).

8. The catalytic oxidation device integrating heat exchange and preheating functions as described in claim 7, characterized in that: The copper alloy tube (13) is provided with thermal insulation cotton on the outside.

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