An apparatus for catalytically combusting organic exhaust gases

Abstract

The utility model relates to organic waste gas treatment technical field discloses a device for catalytic combustion treatment organic waste gas, including catalytic combustion chamber, multiple catalytic plate, replacement component and heat exchanger component. Among them, there is the waste gas pipeline that is connected in succession in catalytic combustion chamber up and down, and the waste gas pipeline bottom connects the gas inlet, and the top connects the gas outlet, and the side of catalytic combustion chamber is provided with multiple insertion slot, and multiple catalytic plate and multiple insertion slot one to one correspondence, and replacement component sets up in the side of catalytic combustion chamber close to catalytic plate, and heat exchanger component sets up in the side of catalytic combustion chamber away from catalytic plate. Through setting replacement component, the catalytic plate is extracted from catalytic combustion chamber or inserted into catalytic combustion chamber, and then the catalytic plate is replaced, and the operation is simple, thereby solve the problem that the catalytic bed layer is difficult to replace, in addition set up heat exchanger component to the heat of catalytic waste gas is recycled and handles organic waste gas, improves energy utilization rate, and reduces energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of organic waste gas treatment technology, specifically to a device for catalytic combustion treatment of organic waste gas. Background Technology

[0002] With the rapid development of industry, the emission of organic waste gas has caused serious environmental pollution. Commonly used methods for treating organic waste gas include catalytic combustion, direct combustion, and condensation recovery. Catalytic combustion heats the waste gas and converts it into harmless and odorless carbon dioxide and water through catalytic combustion. Under the action of a catalyst, hydrocarbons in the organic waste gas are rapidly oxidized into water and carbon dioxide at relatively low temperatures, thus achieving the purpose of treating the waste gas. However, due to problems such as catalyst poisoning, high costs of catalyst bed replacement and cleaning, and the fact that the emitted exhaust gas contains a lot of heat that is not well utilized, the promotion and application of this method in industrial production processes has been hindered. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the purpose of this utility model is to provide a device for catalytic combustion treatment of organic waste gas.

[0004] The device for catalytic combustion treatment of organic waste gas according to this utility model includes:

[0005] The catalytic combustion chamber has an exhaust gas pipeline that is connected vertically. The bottom of the exhaust gas pipeline is connected to an air inlet, and the top is connected to an air outlet. The side of the catalytic combustion chamber is provided with multiple slots. The catalytic tail gas formed after the organic waste gas is catalytically combusted in the catalytic combustion chamber flows out from the air outlet.

[0006] A catalyst plate is provided, wherein multiple catalyst plates are provided, and each of the multiple catalyst plates corresponds one-to-one with a multiple of the slots, and each catalyst plate is attached with a catalyst;

[0007] A replacement component is provided on the side of the catalytic combustion chamber near the catalytic plate, and is used to remove or insert the catalytic plate from the corresponding slot for replacement.

[0008] A heat exchanger assembly is disposed on the side of the catalytic combustion chamber away from the catalytic plate. The organic waste gas is preheated by the heat exchanger assembly and then enters the catalytic combustion chamber through the inlet. The catalytic tail gas flows out from the outlet and then enters the heat exchanger assembly to preheat the organic waste gas before being discharged to the next process.

[0009] Preferably, the replacement assembly includes two mounting plates disposed on the top and bottom sides of the catalytic combustion chamber, a movable plate disposed between the two mounting plates, a lifting mechanism disposed on either of the mounting plates, a linear drive unit disposed on the movable plate, an electromagnet disposed at the output end of the linear drive unit, and a magnetic conductor disposed on the catalytic plate. The lifting mechanism is used to drive the movable plate to move up and down. The output end of the linear drive unit passes through the movable plate and is connected to the electromagnet. The linear drive unit is used to drive the electromagnet to move closer to or away from the magnetic conductor.

[0010] Preferably, the lifting mechanism includes a drive motor mounted on the mounting plate, a drive screw mounted on the output end of the drive motor, and a guide rod mounted between the two mounting plates. The end of the drive screw away from the drive motor passes through the movable plate and is connected to the other mounting plate via a bearing. The drive screw is threadedly connected to the movable plate, and the guide rod passes through the movable plate to guide the up and down movement of the movable plate.

[0011] Preferably, the replacement component further includes an infrared beam sensor, which includes an infrared emitter disposed on the movable plate and an infrared receiver disposed on the catalytic plate opposite to the infrared emitter.

[0012] Preferably, each slot opening is provided with a settling groove, and a sealing plate matching the settling groove is provided on one side of the catalyst plate.

[0013] Preferably, a sealing groove is provided in the settling tank, and a sealing ring matching the sealing groove is provided on the inner side of the sealing plate.

[0014] Preferably, the inner side of the sealing plate is provided with a heat insulation layer.

[0015] Preferably, the heat exchanger assembly is a tubular heat exchanger, with the shell-side inlet and shell-side outlet of the tubular heat exchanger located at the top and bottom of the tubular heat exchanger, respectively, and the tube-side inlet and tube-side outlet of the tubular heat exchanger located at the bottom and top of the tubular heat exchanger, respectively. The shell-side inlet is connected to an organic waste gas source through a first pipe, the shell-side outlet is connected to the air inlet through a second pipe, the tube-side inlet is connected to the air outlet through a third pipe, and the tube-side outlet is connected to the next process through a fourth pipe.

[0016] Preferably, a filter plate is provided at the inlet of the first pipe.

[0017] The catalytic combustion treatment device for organic waste gas described in this utility model has the advantage that the catalytic plate can be extracted from or inserted into the catalytic combustion chamber by setting a replacement component, thereby replacing the catalytic plate. The operation is simple, thus solving the problem of difficulty in replacing the catalytic bed. In addition, the heat exchanger component is set to recover the heat of the catalytic waste gas and treat the organic waste gas, thereby improving the energy utilization rate and reducing energy consumption. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the catalytic combustion treatment device for organic waste gas according to the present invention.

[0019] Figure 2 This is a schematic diagram (from another perspective) of the catalytic combustion treatment device for organic waste gas according to this utility model.

[0020] Figure 3 This is a cross-sectional view (without heat exchanger assembly) of the catalytic combustion device for treating organic waste gas according to this utility model.

[0021] Figure 4 This is a utility model Figure 3 Enlarged diagram of point A in the middle.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Catalytic combustion chamber, 101 air inlet, 102 air outlet, 103 slot, 1031 settling tank, 1032 sealing tank;

[0024] 2. Catalytic converter plate; 21. Sealing plate; 22. Sealing ring;

[0025] 3 Replacement components, 31 Mounting plate, 32 Moving plate, 33 Lifting mechanism, 331 Drive motor, 332 Drive screw, 333 Guide rod, 34 Linear drive unit, 35 Electromagnet, 36 Magnetic conductor, 37 Infrared transmitter, 38 Infrared receiver.

[0026] 4 heat exchanger assembly, 41 first pipe, 411 filter plate, 42 second pipe, 43 third pipe, 44 fourth pipe. Detailed Implementation

[0027] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0032] like Figures 1-4 As shown, the catalytic combustion device for treating organic waste gas disclosed in this embodiment includes a catalytic combustion chamber 1, multiple catalytic plates 2, a replacement assembly 3, and a heat exchanger assembly 4. The catalytic combustion chamber 1 has an exhaust gas pipeline that connects vertically. The bottom of the exhaust gas pipeline is connected to the inlet 101, and the top is connected to the outlet 102. Multiple slots 103 are provided on the side of the catalytic combustion chamber 1. The catalytic tail gas formed after the organic waste gas is catalytically combusted in the catalytic combustion chamber 1 flows out from the outlet 102. Multiple catalytic plates 2 correspond one-to-one with multiple slots 103. Each catalytic plate 2 is coated with catalyst. The replacement component 3 is located on the side of the catalytic combustion chamber 1 near the catalytic plate 2. It is used to remove or insert the catalytic plate 2 from the corresponding slot 103 for replacement. The heat exchanger component 4 is located on the side of the catalytic combustion chamber 1 away from the catalytic plate 2. After the organic waste gas is preheated by the heat exchanger component 4, it enters the catalytic combustion chamber 1 from the inlet 101. After the catalytic tail gas flows out from the outlet 102, it enters the heat exchanger component 4 to preheat the organic waste gas before being discharged to the next process.

[0033] In this embodiment, during operation, the organic waste gas first enters the shell side of the heat exchanger assembly 4 for preheating. After preheating, it enters the catalytic combustion chamber 1 for catalytic combustion. The catalytic exhaust gas after combustion enters the tube side of the heat exchanger assembly 4, providing heat for the preheating of the organic waste gas and ensuring full utilization of energy. When it is necessary to replace the catalytic plate 2, the replacement assembly 3 pulls the catalytic plate 2 out of the slot 103, then replaces the old catalytic plate 2, takes out the new catalytic plate 2 and installs it on the replacement assembly 3, and then inserts the new catalytic plate 2 into the slot 103, completing the replacement of the catalytic plate 2. The operation is simple.

[0034] Preferably, the replacement component 3 includes two mounting plates 31 disposed on the top and bottom of the side of the catalytic combustion chamber 1, a movable plate 32 disposed between the two mounting plates 31, a lifting mechanism 33 disposed on either mounting plate 31, a linear drive unit 34 disposed on the movable plate 32, an electromagnet 35 disposed at the output end of the linear drive unit 34, and a magnetic conductor 36 disposed on the catalytic plate 2. The lifting mechanism 33 is used to drive the movable plate 32 to move up and down. The output end of the linear drive unit 34 passes through the movable plate 32 and is connected to the electromagnet 35. The linear drive unit 34 is used to drive the electromagnet 35 to move closer to or away from the magnetic conductor 36.

[0035] In practical use, the lifting mechanism 33 drives the moving plate 32 to move up and down. If the catalyst plate 2 needs to be replaced, the lifting mechanism 33 drives the moving plate 32 to move so that the electromagnet 35 is opposite to the magnetic conductor 36. Then the movement stops, the electromagnet 35 is energized, and the linear drive unit 34 drives the electromagnet 35 to move to the magnetic conductor 36, thereby attracting the catalyst plate 2. Then the linear drive unit 34 retracts, driving the catalyst plate 2 out. Then the staff removes the old catalyst plate 2 and replaces it with a new catalyst plate 2. Then the linear drive unit 34 extends, driving the new catalyst plate 2 to be inserted into the slot 103. After insertion, the electromagnet 35 is de-energized, and the linear drive unit 34 retracts back to its original position.

[0036] The linear drive unit 34 can be a cylinder, a hydraulic cylinder, or an electric actuator.

[0037] Preferably, the lifting mechanism 33 includes a drive motor 331 mounted on the mounting plate 31, a drive screw 332 mounted at the output end of the drive motor 331, and a guide rod 333 mounted between the two mounting plates 31. One end of the drive screw 332, away from the drive motor 331, passes through the moving plate 32 and is connected to the other mounting plate 31 via a bearing. The drive screw 332 is threadedly connected to the moving plate 32. The guide rod 333 passes through the moving plate 32 to guide its vertical movement. Specifically, when the drive motor 331 starts, it drives the drive screw 332 to rotate. Due to the threaded action of the moving plate 32 and the action of the guide rod 333, the moving plate 32 moves vertically. This operation is simple and easy to implement.

[0038] Preferably, the replacement component 3 further includes an infrared beam sensor, which includes an infrared emitter 37 disposed on the movable plate 32 and an infrared receiver 38 disposed on the catalytic plate 2 opposite to the infrared emitter 37. When the movable plate 32 moves, when the infrared receiver 38 receives the infrared signal emitted by the infrared emitter 37, the drive motor 331 stops working, and then the linear drive unit 34 starts working.

[0039] Preferably, each slot 103 opening is provided with a recess 1031, and a sealing plate 21 matching the recess 1031 is provided on one side of the catalytic plate 2. During installation, the sealing plate 21 is inserted into the recess 1031 to ensure the sealing of the slot 103. The sealing plate 21 and the recess 1031 can also be connected by a detachable connection method such as an electromagnet.

[0040] Preferably, a sealing groove 1032 is provided inside the settling tank 1031, and a sealing ring 22 matching the sealing groove 1032 is provided on the inner side of the sealing plate 21. The sealing groove 1032 and the sealing ring 22 can improve the sealing performance of the device and further prevent leakage. The catalyst plate 2 is a honeycomb ceramic catalyst bed, and the surface of the bed is loaded with a Pt-Pd bimetallic catalyst.

[0041] Preferably, an insulation layer is provided on the inner side of the sealing plate 21 to improve the insulation performance of the device and prevent heat loss. Alternatively, an insulation layer can also be provided on the outside of the catalytic combustion chamber 1.

[0042] Preferably, the heat exchanger assembly 4 is a tubular heat exchanger. The shell-side inlet and shell-side outlet of the tubular heat exchanger are located at the top and bottom of the tubular heat exchanger, respectively. The tube-side inlet and tube-side outlet of the tubular heat exchanger are located at the bottom and top of the tubular heat exchanger, respectively. The shell-side inlet is connected to the organic waste gas source through the first pipe 41, the shell-side outlet is connected to the air inlet 101 through the second pipe 42, the tube-side inlet is connected to the air outlet 102 through the third pipe 43, and the tube-side outlet is connected to the next process through the fourth pipe 44.

[0043] During the heat exchange process, the catalytic exhaust gas enters the tube side through the third pipe 43 to preheat the organic waste gas, thereby reducing the load on subsequent catalytic combustion.

[0044] Preferably, a filter plate 411 is provided at the inlet of the first pipe 41. The filter plate 411 can filter out impurities in the organic waste gas and prevent impurities from clogging the subsequent catalyst plate 2.

[0045] In summary, the catalytic combustion treatment device for organic waste gas of this invention solves the problem of difficult catalytic bed replacement by setting a replacement component to extract or insert the catalytic plate from the catalytic combustion chamber. In addition, the heat exchanger component recovers the heat of the catalytic waste gas and treats the organic waste gas, thereby improving energy utilization and reducing energy consumption.

[0046] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0047] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of this utility model.

Claims

1. A device for treating organic waste gas by catalytic combustion, characterized in that, include: A catalytic combustion chamber (1) has an exhaust gas pipeline that is connected vertically inside the catalytic combustion chamber (1). The bottom of the exhaust gas pipeline is connected to an air inlet (101) and the top is connected to an air outlet (102). The side of the catalytic combustion chamber (1) is provided with multiple slots (103). The catalytic tail gas formed after the organic waste gas is catalytically combusted in the catalytic combustion chamber (1) flows out from the air outlet (102). Catalytic plate (2), multiple catalytic plates (2) are provided, and multiple catalytic plates (2) correspond one-to-one with multiple slots (103), and each catalytic plate (2) is attached with a catalyst; Replacement component (3), which is disposed on the side of the catalytic combustion chamber (1) near the catalytic plate (2) for removing or inserting the catalytic plate (2) from the corresponding slot (103) for replacement; A heat exchanger assembly (4) is disposed on the side of the catalytic combustion chamber (1) away from the catalytic plate (2). The organic waste gas is preheated by the heat exchanger assembly (4) and enters the catalytic combustion chamber (1) through the air inlet (101). The catalytic tail gas flows out from the air outlet (102) and enters the heat exchanger assembly (4) to preheat the organic waste gas before being discharged to the next process.

2. The apparatus for catalytic combustion treatment of organic waste gas according to claim 1, characterized in that, The replacement component (3) includes two mounting plates (31) disposed on the top and bottom sides of the catalytic combustion chamber (1), a movable plate (32) disposed between the two mounting plates (31), a lifting mechanism (33) disposed on any of the mounting plates (31), a linear drive unit (34) disposed on the movable plate (32), an electromagnet (35) disposed at the output end of the linear drive unit (34), and a magnetic conductor (36) disposed on the catalytic plate (2). The lifting mechanism (33) is used to drive the movable plate (32) to move up and down. The output end of the linear drive unit (34) passes through the movable plate (32) and is connected to the electromagnet (35). The linear drive unit (34) is used to drive the electromagnet (35) to move closer to or away from the magnetic conductor (36).

3. The apparatus for treating organic waste gas by catalytic combustion according to claim 2, characterized in that, The lifting mechanism (33) includes a drive motor (331) mounted on the mounting plate (31), a drive screw (332) mounted at the output end of the drive motor (331), and a guide rod (333) mounted between the two mounting plates (31). The end of the drive screw (332) away from the drive motor (331) passes through the moving plate (32) and is connected to the other mounting plate (31) via a bearing. The drive screw (332) is threadedly connected to the moving plate (32). The guide rod (333) passes through the moving plate (32) to provide guidance for the up and down movement of the moving plate (32).

4. The apparatus for treating organic waste gas by catalytic combustion according to claim 3, characterized in that, The replacement component (3) also includes an infrared beam sensor, which includes an infrared emitter (37) disposed on the movable plate (32) and an infrared receiver (38) disposed on the catalyst plate (2) opposite to the infrared emitter (37).

5. The apparatus for treating organic waste gas by catalytic combustion according to claim 1, characterized in that, Each slot (103) opening is provided with a sink (1031), and a sealing plate (21) matching the sink (1031) is provided on one side of the catalyst plate (2).

6. The apparatus for treating organic waste gas by catalytic combustion according to claim 5, characterized in that, A sealing groove (1032) is provided inside the settling tank (1031), and a sealing ring (22) matching the sealing groove (1032) is provided on the inner side of the sealing plate (21).

7. The apparatus for catalytic combustion treatment of organic waste gas according to claim 5, characterized in that, The inner side of the sealing plate (21) is provided with a heat insulation layer.

8. The apparatus for treating organic waste gas by catalytic combustion according to claim 1, characterized in that, The heat exchanger assembly (4) is a tubular heat exchanger. The shell-side inlet and shell-side outlet of the tubular heat exchanger are located at the top and bottom of the tubular heat exchanger, respectively. The tube-side inlet and tube-side outlet of the tubular heat exchanger are located at the bottom and top of the tubular heat exchanger, respectively. The shell-side inlet is connected to the organic waste gas source through the first pipe (41). The shell-side outlet is connected to the air inlet (101) through the second pipe (42). The tube-side inlet is connected to the air outlet (102) through the third pipe (43). The tube-side outlet is connected to the next process through the fourth pipe (44).

9. The apparatus for treating organic waste gas by catalytic combustion according to claim 8, characterized in that, A filter plate (411) is provided at the inlet of the first pipe (41).

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