Apparatus for catalytic decomposition of nitrogen oxides in adipic acid off-gas

Abstract

This utility model belongs to the field of adipic acid tail gas treatment technology, and particularly relates to a catalytic decomposition device for nitrogen oxides in adipic acid tail gas. It includes a shell, a fixed frame, and two metal grids. It also includes: an air inlet pipe, fixedly installed on one side of the shell, and an air outlet pipe, both with negative pressure fans fixedly installed inside. Several electric heating tubes are fixedly installed inside the air inlet pipe. A fixed plate is inserted into the air outlet pipe, and three sliding frames are inserted into the fixed plate. From left to right, a pre-filter, an activated carbon filter, and a HEPA filter are fixedly installed in the three sliding frames. A connecting rod is rotatably installed inside the shell, and several rotating columns are rotatably installed on the connecting rod. This device ensures that all waste gas can be catalytically decomposed, ensuring thorough purification and the absence of particulate matter. It also facilitates the replacement of the pre-filter, activated carbon filter, and HEPA filter, and is simple and convenient to operate.

Description

Technical Field

[0001] This utility model belongs to the field of adipic acid tail gas treatment technology, and particularly relates to a catalytic decomposition device for nitrogen oxides in adipic acid tail gas. Background Technology

[0002] The function of the adipic acid tail gas nitrogen oxide catalytic decomposition unit is to treat nitrogen oxides (NOx) in the tail gas emitted during adipic acid production. With the help of a catalyst, it decomposes NOx into harmless nitrogen (N2) and oxygen (O2) under specific conditions, reducing nitrogen oxide emissions, lowering its pollution to the atmosphere, and helping enterprises meet environmental emission standards.

[0003] For example, Chinese patent CN218033181 U discloses a catalytic decomposition device for waste gas in air pollution control, belonging to the field of air pollution control technology. It includes a waste gas treatment box, with a blower fixedly connected to the bottom surface of the box. A top plate is fixedly mounted on the upper surface of the box by screws, and a drive motor is fixedly mounted on the upper surface of the top plate. A rotating shaft is fixedly mounted on the output end of the drive motor. The waste gas treatment box is divided into a combustion chamber, a cooling chamber, and a catalytic chamber by horizontal and vertical partitions inside. A catalyst is added to the catalytic chamber through a filling hopper. The waste gas entering the combustion chamber is heated by a heating wire, and the secondary combustion gas enters the catalytic chamber. A stirring rod is installed in the catalytic chamber, and the stirring rod is rotated by the drive motor in conjunction with the rotating shaft, which stirs the catalyst, ensuring that the waste gas is in full contact with the catalyst and guaranteeing the catalytic decomposition effect.

[0004] The aforementioned patent has the following problems:

[0005] This patented device has several drawbacks in its use. For example, the single stirring shaft used to mix the catalyst and waste gas results in low mixing efficiency, causing the waste gas to be discharged before complete catalytic decomposition. Furthermore, the single filter used for filtration is prone to clogging, requiring frequent replacements and wasting time. Therefore, we propose a catalytic decomposition device for nitrogen oxides in adipic acid tail gas. Utility Model Content

[0006] The purpose of this invention is to provide a device for the catalytic decomposition of nitrogen oxides in adipic acid tail gas, so as to solve the problems mentioned in the background art.

[0007] In view of this, the present invention provides a catalytic decomposition device for nitrogen oxides in adipic acid tail gas, comprising a shell, a fixing frame, and two metal grids, and further comprising:

[0008] An air inlet duct is fixedly installed on one side of the housing, and an air outlet duct is fixedly installed on the other side of the housing. Negative pressure fans are fixedly installed inside both the air inlet duct and the air outlet duct. Several electric heating tubes are fixedly installed inside the air inlet duct. A fixing plate is inserted into the air outlet duct. Three sliding frames are inserted into the fixing plate. From left to right, a pre-filter, an activated carbon filter, and a HEPA filter are fixedly installed in the three sliding frames.

[0009] A connecting rod is rotatably installed inside the housing. Several rotating columns are rotatably installed on the connecting rod. Several stirring blades are fixedly installed on each of the rotating columns. The metal grid is fixedly installed inside the housing. Two metal grids are fixedly installed inside a fixed frame.

[0010] A fixing component, located within a fixing plate, is used to fix the position of the fixing plate;

[0011] A drive assembly, located within the housing, is used to drive the connecting rod and several rotating columns to rotate.

[0012] In this technical solution, two negative pressure fans are first started. The negative pressure fan on the left draws the exhaust gas into the inlet duct. Then, the exhaust gas is heated by several electric heating tubes and enters the housing. Through the set drive components, several rotating columns and several stirring blades can be driven to rotate and spin. The stirring blades can fully stir and mix the catalyst and exhaust gas to ensure that the exhaust gas can be completely catalytically decomposed. Then, the exhaust gas is drawn from the housing into the outlet duct by the negative pressure fan on the right. Then, the exhaust gas is discharged to the outside after being filtered by the pre-filter, activated carbon filter and HEPA filter, ensuring that the exhaust gas is thoroughly purified and free of particulate matter. At the same time, the pre-filter, activated carbon filter and HEPA filter achieve staged filtration and will not be frequently blocked.

[0013] When it is necessary to replace the pre-filter, activated carbon filter, and HEPA filter, the fixing plate can be removed using the set fixing components. Then, the three sliding frames can be removed, and the new pre-filter, activated carbon filter, and HEPA filter can be inserted into the fixing plate through the three sliding frames. Finally, the fixing plate is inserted into the air outlet duct. The fixed plate can be fixed in position using the set fixing components, which makes it easy to replace the pre-filter, activated carbon filter, and HEPA filter, and the operation is simple and convenient.

[0014] In the above technical solution, the fixing component further includes:

[0015] A limiting groove is formed inside a fixed plate. A disc is rotatably installed inside the limiting groove. Two rotating rods are rotatably installed on the bottom of the disc. A rectangular plate is rotatably installed on one end of each of the two rotating rods. The sides of the two rectangular plates that are far apart from each other pass through the limiting groove and extend into the fixed plate. Both rectangular plates are inserted into the fixed plate.

[0016] The handle is fixedly installed on the top of the disc. The upper end of the handle passes through the limiting groove and extends to the outside. A torsion spring is sleeved on the handle. The two ends of the torsion spring are fixedly connected to the inner wall of the limiting groove and the disc, respectively. Both rectangular plates are slidably connected to the limiting groove. The handle is rotatably connected to the limiting groove.

[0017] In this technical solution, when it is necessary to replace the pre-filter, activated carbon filter, and HEPA filter, first turn the handle clockwise to rotate the disc clockwise. At the same time, the torsion spring twists, and the disc pulls the two rotating rods to rotate. The two rotating rods respectively drive the two rectangular plates to slide and move closer to each other. After the two rectangular plates are detached from the air outlet duct, the fixing plate can be removed. Then, the three sliding frames are removed. Next, the new pre-filter, activated carbon filter, and HEPA filter are inserted into the fixing plate through the three sliding frames. Then, the fixing plate is inserted into the air outlet duct. Then, the handle is released. Under the torsional force of the torsion spring, the handle and the disc rotate in opposite directions. The disc pushes the two rotating rods to rotate, and the two rotating rods respectively push the two rectangular plates to slide and move away from each other. Finally, the two rectangular plates are inserted into the air outlet duct, which can fix the position of the fixing plate. This facilitates the replacement of the pre-filter, activated carbon filter, and HEPA filter, and the operation is simple and convenient.

[0018] In the above technical solution, the driving component further includes:

[0019] A geared disc is fixedly installed inside a housing. A motor is fixedly installed on the top of the housing. The output shaft of the motor passes through the housing and the geared disc and is fixedly connected to a connecting rod. Gears are fixedly installed on the top of several rotating columns, and several gears mesh with the geared disc.

[0020] In this technical solution, two negative pressure fans are first started. The negative pressure fan on the left draws the exhaust gas into the inlet duct. The exhaust gas is then heated by several electric heating tubes before entering the housing. Simultaneously, the motor is started, and the motor drives the connecting rod to rotate. The connecting rod drives several gears and several rotating columns to rotate. At the same time, several gears mesh with the gear disc and rotate on their own axis. Several gears drive several rotating columns and several stirring blades to rotate and rotate on their own axis. Several stirring blades can fully mix the catalyst and exhaust gas, ensuring that the exhaust gas can be completely catalytically decomposed. Then, the exhaust gas is drawn from the housing into the outlet duct by the negative pressure fan on the right. Subsequently, the exhaust gas is filtered through a pre-filter, an activated carbon filter, and a HEPA filter before being discharged to the outside, ensuring that the exhaust gas is thoroughly purified and free of particulate matter. At the same time, the pre-filter, activated carbon filter, and HEPA filter achieve staged filtration, preventing frequent clogging.

[0021] In the above technical solution, a feed pipe is fixedly installed on the housing, and a rubber plug is inserted into one end of the feed pipe.

[0022] In this technical solution, the feed pipe allows workers to easily pour the catalyst into the shell, and the rubber stopper ensures that the exhaust gas will not overflow from the feed pipe to the outside.

[0023] In the above technical solution, the output shaft of the motor is further rotatably connected to the housing and the gear disc.

[0024] In this technical solution, it is ensured that the output shaft of the motor can rotate within the housing and the gear plate.

[0025] In the above technical solution, further, several of the electric heating tubes are distributed at equal intervals inside the air inlet pipe.

[0026] In this technical solution, it is ensured that the waste gas can be heated evenly, so that the catalytic decomposition reaction can proceed normally.

[0027] In the above technical solution, the three sliding frames are further distributed at equal intervals on the fixed plate.

[0028] In this technical solution, the pre-filter, activated carbon filter, and HEPA filter are guaranteed to achieve tiered filtration without frequent clogging.

[0029] The beneficial effects of this utility model are:

[0030] 1. The adipic acid tail gas nitrogen oxide catalytic decomposition device first starts two negative pressure fans. The negative pressure fan on the left draws the waste gas into the air inlet pipe. Then the waste gas enters the shell after being heated by several electric heating tubes. Through the set drive components, several rotating columns and several stirring blades can be driven to rotate and spin. The stirring blades can fully stir and mix the catalyst and waste gas to ensure that the waste gas can be completely catalytically decomposed.

[0031] 2. This adipic acid tail gas nitrogen oxide catalytic decomposition device filters the exhaust gas through a pre-filter, activated carbon filter, and HEPA filter before discharging it to the outside, ensuring thorough purification and eliminating particulate matter. The pre-filter, activated carbon filter, and HEPA filter provide staged filtration, preventing frequent clogging. A fixed plate can be removed using a mounting assembly, followed by the removal of three sliding frames. New pre-filters, activated carbon filters, and HEPA filters are then inserted into the fixed plate through the three sliding frames. The fixed plate is then inserted into the outlet duct. The mounting assembly secures the plate, facilitating easy replacement of the pre-filters, activated carbon filters, and HEPA filters. The operation is simple and convenient. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0033] Figure 2 This is a schematic diagram of the cross-sectional structure of the air inlet pipe of this utility model;

[0034] Figure 3 This is a schematic diagram of the cross-sectional structure of the air outlet pipe of this utility model;

[0035] Figure 4 This is one of the schematic diagrams of the cross-sectional structure of the fixing plate of this utility model;

[0036] Figure 5 This is the utility model Figure 4 Enlarged structural diagram at point A;

[0037] Figure 6 This is the second schematic diagram of the cross-sectional structure of the fixing plate of this utility model;

[0038] Figure 7 This is a schematic diagram of the cross-sectional structure of the shell of this utility model;

[0039] Figure 8 This is a schematic diagram of the connecting rod area structure of this utility model.

[0040] The markings in the diagram are as follows:

[0041] 1. Housing; 2. Inlet duct; 3. Outlet duct; 4. Negative pressure fan; 5. Electric heating element; 6. Fixing plate; 7. Sliding frame; 8. Primary filter; 9. Activated carbon filter; 10. HEPA filter; 11. Connecting rod; 12. Rotating column; 13. Stirring blade; 14. Limiting groove; 15. Disc; 16. Rotating rod; 17. Rectangular plate; 18. Handle; 19. Torsion spring; 20. Gear disc; 21. Motor; 22. Gear; 23. Fixing frame; 24. Metal mesh; 25. Feed pipe; 26. Rubber stopper. Detailed Implementation

[0042] The following is in conjunction with the appendix Figure 1 - Figure 8 This application will be described in further detail.

[0043] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0044] Example 1: This example provides a catalytic decomposition device for nitrogen oxides in adipic acid tail gas, including a shell 1, a fixing frame 23, and two metal grids 24, and further including:

[0045] Air inlet duct 2 is fixedly installed on one side of housing 1, and air outlet duct 3 is fixedly installed on the other side of housing 1. Negative pressure fan 4 is fixedly installed in both air inlet duct 2 and air outlet duct 3. Several electric heating tubes 5 are fixedly installed in air inlet duct 2. Fixing plate 6 is inserted into air outlet duct 3. Three sliding frames 7 are inserted into fixing plate 6. From left to right, a primary filter 8, an activated carbon filter 9, and a HEPA filter 10 are fixedly installed in the three sliding frames 7.

[0046] A connecting rod 11 is rotatably installed inside the housing 1. Several rotating columns 12 are rotatably installed on the connecting rod 11. Several stirring blades 13 are fixedly installed on each of the rotating columns 12. A metal grid 24 is fixedly installed inside the housing 1. Both metal grids 24 are fixedly installed inside the fixed frame 23.

[0047] A fixing component is located inside the fixing plate 6 and is used to fix the position of the fixing plate 6.

[0048] A drive assembly is located inside the housing 1 and is used to drive the connecting rod 11 and several rotating columns 12 to rotate.

[0049] First, two negative pressure fans 4 are started. The negative pressure fan 4 on the left draws the exhaust gas into the inlet pipe 2. Then, the exhaust gas is heated by several electric heating tubes 5 and enters the housing 1. Through the set drive components, several rotating columns 12 and several stirring blades 13 can be driven to rotate and spin. The stirring blades 13 can fully stir and mix the catalyst and exhaust gas to ensure that the exhaust gas can be completely catalytically decomposed. Then, the exhaust gas is drawn from the housing 1 into the outlet pipe 3 by the negative pressure fan 4 on the right. Then, the exhaust gas is filtered by the pre-filter 8, the activated carbon filter 9 and the HEPA filter 10 and discharged to the outside, ensuring that the exhaust gas is thoroughly purified and does not contain particulate matter. At the same time, the pre-filter 8, the activated carbon filter 9 and the HEPA filter 10 achieve staged filtration and will not be frequently blocked.

[0050] When it is necessary to replace the pre-filter 8, activated carbon filter 9, and HEPA filter 10, the fixing plate 6 can be removed using the fixed assembly. Then, the three sliding frames 7 can be removed, and the new pre-filter 8, activated carbon filter 9, and HEPA filter 10 can be inserted into the fixing plate 6 through the three sliding frames 7. Finally, the fixing plate 6 can be inserted into the air outlet duct 3. The fixed assembly can fix the position of the fixing plate 6, making it convenient to replace the pre-filter 8, activated carbon filter 9, and HEPA filter 10. The operation is simple and convenient.

[0051] In this embodiment, the fixing component includes:

[0052] A limiting groove 14 is formed in the fixed plate 6. A disc 15 is rotatably installed in the limiting groove 14. Two rotating rods 16 are rotatably installed at the bottom of the disc 15. A rectangular plate 17 is rotatably installed at one end of each of the two rotating rods 16. The two rectangular plates 17, which are far apart from each other, pass through the limiting groove 14 and extend into the fixed plate 6. The two rectangular plates 17 are inserted into the fixed plate 6.

[0053] Handle 18 is fixedly installed on the top of disc 15. The upper end of handle 18 passes through the limiting groove 14 and extends to the outside. A torsion spring 19 is sleeved on handle 18. The two ends of torsion spring 19 are fixedly connected to the inner wall of limiting groove 14 and disc 15 respectively. Both rectangular plates 17 are slidably connected to limiting groove 14. Handle 18 is rotatably connected to limiting groove 14.

[0054] When replacing the pre-filter 8, activated carbon filter 9, and HEPA filter 10, first turn the handle 18 clockwise, causing the disc 15 to rotate clockwise. Simultaneously, the torsion spring 19 twists, and the disc 15 pulls the two rotating rods 16 to rotate. The two rotating rods 16 then drive the two rectangular plates 17 to slide and move closer together. Once both rectangular plates 17 have detached from the air outlet duct 3, the fixing plate 6 can be removed. Then, the three sliding frames 7 can be removed, and finally, the new pre-filter 8, activated carbon filter 9, and HEPA filter 10 can be installed. Insert the three sliding frames 7 into the fixing plate 6, and then insert the fixing plate 6 into the air outlet duct 3. Then release the handle 18. Under the torsional force of the torsion spring 19, the handle 18 and the disc 15 rotate in opposite directions. The disc 15 pushes the two rotating rods 16 to rotate. The two rotating rods 16 push the two rectangular plates 17 to slide and move away from each other. Finally, both rectangular plates 17 are inserted into the air outlet duct 3, which can fix the position of the fixing plate 6, making it convenient to replace the pre-filter 8, activated carbon filter 9 and HEPA filter 10. The operation is simple and convenient.

[0055] In this embodiment, the driving component includes:

[0056] A gear disk 20 is fixedly installed inside a housing 1. A motor 21 is fixedly installed on the top of the housing 1. The output shaft of the motor 21 passes through the housing 1 and the gear disk 20 and is fixedly connected to the connecting rod 11. Gears 22 are fixedly installed on the top of several rotating columns 12, and several gears 22 mesh with the gear disk 20.

[0057] First, two negative pressure fans 4 are started. The negative pressure fan 4 on the left draws the exhaust gas into the inlet pipe 2. Then, the exhaust gas is heated by several electric heating tubes 5 and enters the housing 1. At the same time, the motor 21 is started. The motor 21 is powered on and drives the connecting rod 11 to rotate. The connecting rod 11 drives several gears 22 and several rotating columns 12 to rotate. At the same time, several gears 22 mesh with the gear plate 20 and rotate on their own axis. Several gears 22 drive several rotating columns 12 and several stirring blades 13 to rotate and rotate on their own axis. Several stirring blades 13 can fully stir and mix the catalyst and exhaust gas to ensure that the exhaust gas can be completely catalytically decomposed. Then, the exhaust gas is drawn from the housing 1 into the outlet pipe 3 by the negative pressure fan 4 on the right. Then, the exhaust gas is filtered by the pre-filter 8, the activated carbon filter 9 and the HEPA filter 10 and discharged to the outside, ensuring that the exhaust gas is thoroughly purified and free of particulate matter. At the same time, the pre-filter 8, the activated carbon filter 9 and the HEPA filter 10 achieve staged filtration and will not be frequently blocked.

[0058] Example 2:

[0059] This embodiment provides a catalytic decomposition device for nitrogen oxides in adipic acid tail gas, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0060] In this embodiment, a feed pipe 25 is fixedly installed on the housing 1, and a rubber plug 26 is inserted into one end of the feed pipe 25.

[0061] The feed pipe 25 allows staff to easily pour the catalyst into the housing 1, while the rubber stopper 26 ensures that the exhaust gas will not overflow from the feed pipe 25 to the outside.

[0062] Example 3:

[0063] This embodiment provides a catalytic decomposition device for nitrogen oxides in adipic acid tail gas, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0064] In this embodiment, the output shaft of the motor 21 is rotatably connected to the housing 1 and the gear disk 20.

[0065] This ensures that the output shaft of the motor 21 can rotate within the housing 1 and the gear plate 20.

[0066] Example 4:

[0067] This embodiment provides a catalytic decomposition device for nitrogen oxides in adipic acid tail gas, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0068] In this embodiment, several electric heating tubes 5 are distributed at equal intervals inside the air inlet pipe 2.

[0069] This includes ensuring that the exhaust gas is heated evenly to guarantee that the catalytic decomposition reaction can proceed normally.

[0070] Example 5:

[0071] This embodiment provides a catalytic decomposition device for nitrogen oxides in adipic acid tail gas, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0072] In this embodiment, the three sliding frames 7 are distributed at equal intervals on the fixed plate 6.

[0073] Among them, the primary filter 8, activated carbon filter 9, and HEPA filter 10 are guaranteed to achieve graded filtration and will not be frequently clogged.

[0074] It is worth noting that the electric heating tube 5 involved in this utility model is an electric heating tube 5 with product number G3 / 4 threaded single-ended heating tube produced by Yancheng Feiyu Alloy Electric Co., Ltd. The electric heating tube 5 involved in this utility model is existing technology, which can be fully implemented by those skilled in the art, and there is no need to elaborate. The content protected by this utility model does not involve any improvement to the structure and working principle of the electric heating tube 5.

[0075] Working principle: First, two negative pressure fans 4 are started. The negative pressure fan 4 on the left draws the exhaust gas into the inlet pipe 2. Then, the exhaust gas is heated by several electric heating tubes 5 and enters the housing 1. At the same time, the motor 21 is started. The motor 21 is powered on and drives the connecting rod 11 to rotate. The connecting rod 11 drives several gears 22 and several rotating columns 12 to rotate. At the same time, several gears 22 mesh with the gear plate 20 and rotate on their own axis. Several gears 22 drive several rotating columns 12 and several stirring blades 13 to rotate and rotate on their own axis. Several stirring blades 13 can fully stir and mix the catalyst and exhaust gas to ensure that the exhaust gas can be completely catalytically decomposed. Then, the exhaust gas is drawn from the housing 1 into the outlet pipe 3 by the negative pressure fan 4 on the right. Then, the exhaust gas is filtered by the pre-filter 8, the activated carbon filter 9 and the HEPA filter 10 and discharged to the outside, ensuring that the exhaust gas is thoroughly purified and does not contain particulate matter. At the same time, the pre-filter 8, the activated carbon filter 9 and the HEPA filter 10 achieve staged filtration and will not be frequently blocked.

[0076] When it is necessary to replace the pre-filter 8, activated carbon filter 9, and HEPA filter 10, first turn the handle 18 clockwise, causing the disc 15 to rotate clockwise. Simultaneously, the torsion spring 19 twists, and the disc 15 pulls the two rotating rods 16 to rotate. The two rotating rods 16 respectively drive the two rectangular plates 17 to slide and move closer to each other. After both rectangular plates 17 have detached from the air outlet duct 3, the fixing plate 6 can be removed. Then, the three sliding frames 7 can be removed, and the new pre-filter 8, activated carbon filter 9, and HEPA filter 10 can be installed through... Three sliding frames 7 are inserted into the fixing plate 6, and then the fixing plate 6 is inserted into the air outlet duct 3. Then, the handle 18 is released. Under the torsional force of the torsion spring 19, the handle 18 and the disc 15 rotate in opposite directions. The disc 15 pushes the two rotating rods 16 to rotate. The two rotating rods 16 push the two rectangular plates 17 to slide and move away from each other. Finally, both rectangular plates 17 are inserted into the air outlet duct 3, which can fix the position of the fixing plate 6, making it convenient to replace the pre-filter 8, activated carbon filter 9 and HEPA filter 10. The operation is simple and convenient.

[0077] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A device for catalytic decomposition of nitrogen oxides in adipic acid tail gas, comprising a shell (1), a fixing frame (23), and two metal grids (24), characterized in that, Also includes: An air inlet pipe (2) is fixedly installed on one side of the housing (1), and an air outlet pipe (3) is fixedly installed on the other side of the housing (1). Negative pressure fans (4) are fixedly installed in both the air inlet pipe (2) and the air outlet pipe (3). Several electric heating tubes (5) are fixedly installed in the air inlet pipe (2). A fixing plate (6) is inserted into the air outlet pipe (3). Three sliding frames (7) are inserted into the fixing plate (6). A primary filter (8), an activated carbon filter (9), and a HEPA filter (10) are fixedly installed in the three sliding frames (7) from left to right. A connecting rod (11) is rotatably installed inside the housing (1). Several rotating columns (12) are rotatably installed on the connecting rod (11). Several stirring blades (13) are fixedly installed on each of the rotating columns (12). The metal grid (24) is fixedly installed inside the housing (1). Two metal grids (24) are fixedly installed inside the fixed frame (23). A fixing component is located inside the fixing plate (6) and is used to fix the position of the fixing plate (6); A drive assembly located inside the housing (1) is used to drive the connecting rod (11) and a plurality of rotating columns (12) to rotate.

2. The adipic acid tail gas nitrogen oxide catalytic decomposition device according to claim 1, characterized in that, The fixing component includes: A limiting groove (14) is formed in a fixed plate (6). A disc (15) is rotatably installed in the limiting groove (14). Two rotating rods (16) are rotatably installed at the bottom of the disc (15). A rectangular plate (17) is rotatably installed at one end of each of the two rotating rods (16). The two rectangular plates (17) are both inserted into the limiting groove (14) and extend into the fixed plate (6) on the opposite sides. A handle (18) is fixedly installed on the top of a disc (15). The upper end of the handle (18) passes through the limiting groove (14) and extends to the outside. A torsion spring (19) is sleeved on the handle (18). The two ends of the torsion spring (19) are fixedly connected to the inner wall of the limiting groove (14) and the disc (15) respectively. The two rectangular plates (17) are slidably connected to the limiting groove (14). The handle (18) is rotatably connected to the limiting groove (14).

3. The adipic acid tail gas nitrogen oxide catalytic decomposition device according to claim 2, characterized in that, The driving component includes: A gear disk (20) is fixedly installed inside a housing (1). A motor (21) is fixedly installed on the top of the housing (1). The output shaft of the motor (21) passes through the housing (1) and the gear disk (20) and is fixedly connected to a connecting rod (11). A gear (22) is fixedly installed on the top of each of the rotating columns (12). The gears (22) mesh with the gear disk (20).

4. The adipic acid tail gas nitrogen oxide catalytic decomposition device according to claim 1, characterized in that, A feed pipe (25) is fixedly installed on the housing (1), and a rubber plug (26) is inserted into one end of the feed pipe (25).

5. The adipic acid tail gas nitrogen oxide catalytic decomposition device according to claim 3, characterized in that, The output shaft of the motor (21) is rotatably connected to the housing (1) and the gear plate (20).

6. The adipic acid tail gas nitrogen oxide catalytic decomposition device according to claim 1, characterized in that, Several of the electric heating tubes (5) are distributed at equal intervals inside the air inlet pipe (2).

7. The adipic acid tail gas nitrogen oxide catalytic decomposition device according to claim 1, characterized in that, The three sliding frames (7) are evenly spaced on the fixed plate (6).

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