A denitration device with a cleaning mechanism

Abstract

This invention relates to the field of denitrification equipment technology, specifically a denitrification device with a cleaning mechanism, including a mounting bracket, on the inner wall of which a control cabinet is installed. The invention achieves indirect contact between a top block and a corrugated protrusion, causing the mounting ring to move up and down. Simultaneously, the mounting ring drives the cleaning component to rotate. This combination causes the rotating sleeve in the cleaning component to move the brush bristles up and down, allowing the brush bristles to better remove dust from the surface of the catalytic tube. High-pressure gas is introduced into the inner cavity of the catalytic tube through the outlet. The high-pressure gas passes through the microporous structure of the catalytic tube and flows outwards. When the high-pressure gas exits the micropores of the catalytic tube, it carries away fine dust from the microporous cavity. By placing the denitrification tower at the lower end of the fixed bracket and the post-treatment tower at the upper end of the fixed bracket, while vertically installing the denitrification component within the mounting housing, the device occupies less space and is more practical.

Description

Technical Field

[0001] This invention relates to the field of denitrification equipment technology, specifically to a denitrification device with a cleaning mechanism. Background Technology

[0002] Denitrification devices are widely used in coal-fired power plants, industrial boilers, waste incineration plants, and other places that generate large amounts of flue gas. These locations, due to the high temperatures and abundant oxygen produced during combustion, easily generate large amounts of NOx, thus requiring denitrification devices to reduce emissions. Denitrification devices primarily utilize two technologies: Selective Catalytic Reduction (SCR) and Selective Non-Catalytic Reduction (SNCR) to remove NOx from flue gas. SCR technology, under the action of a catalyst, reacts a reducing agent such as ammonia or urea with NOx to produce nitrogen and water; while SNCR technology does not use a catalyst, directly injecting the reducing agent into the flue gas at high temperatures to react with NOx. A denitrification device is a specialized device designed to reduce and control nitrogen oxide emissions from flue gas. It uses specific technical means to convert NOx in flue gas into harmless or less harmful substances, thereby reducing its impact on the environment and human health. The performance of a denitrification device is usually evaluated by indicators such as denitrification efficiency and ammonia slip rate. Denitrification efficiency refers to the device's ability to remove NOx, while ammonia slip rate refers to the proportion of ammonia gas that has not participated in the reaction to the total amount of ammonia gas input. These two indicators are crucial for evaluating the performance of denitrification devices;

[0003] However, in the long-term use of existing denitrification devices, although the external surface of the denitrification catalyst may remain clean, tiny dust particles can still penetrate the surface and enter the micropores, causing blockage. Most denitrification systems are equipped with dust removal devices, but if the dust removal device is not designed properly or the dust removal effect is uneven, the dust on the catalyst surface will not be completely removed. Over time, the blockage problem on the catalyst surface will gradually worsen, leading to poor catalytic performance. At the same time, existing denitrification devices occupy a large area, which makes installation and subsequent maintenance inconvenient. Summary of the Invention

[0004] The present invention provides a denitrification device with a cleaning mechanism to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A denitrification device with a cleaning mechanism includes a mounting bracket, a control cabinet mounted on the inner wall of the mounting bracket, a ladder mounted on one side of the control cabinet and on the inner wall of the mounting bracket, a fixed bracket mounted on one side of the mounting bracket and corresponding to the ladder, a deacidification tower mounted on the inner wall of the fixed bracket, a post-treatment tower mounted directly above the deacidification tower and on the inner wall of the fixed bracket, and a mounting housing mounted on the inner wall of the mounting bracket.

[0007] A denitrification assembly is installed on the inner wall of the mounting housing. A cleaning assembly is installed on one side of the denitrification assembly and on the inner wall of the mounting housing. A deacidification tower is connected to the outer wall of the mounting housing via a first conduit. A second conduit is provided on the top outer wall of the mounting housing. A connecting pipe is provided on one side of the second conduit and at the top of the mounting housing. An electrically controlled valve is installed on the outer wall of the second conduit. One end of the electrically controlled valve is connected to a post-treatment tower via the second conduit. An ash hopper collector is connected to the bottom of the mounting housing via a third conduit.

[0008] As a preferred embodiment of the present invention, the denitrification assembly includes a fixed chassis, two sets of fixed chassis are arranged sequentially from top to bottom and are respectively located on the inner wall of the mounting housing, the outer wall of the fixed chassis is provided with an annular ventilation groove, and a catalyst cylinder is embedded in the bottom of the fixed chassis.

[0009] As a preferred embodiment of the present invention, the catalyst tube is composed of a ceramic fiber tube impregnated with a catalyst, wherein a connecting hole is opened at the top of the catalyst tube, and a second conduit is inserted and connected to the inner wall of the connecting hole; a baffle is provided at the bottom of the catalyst tube; and a connecting pipe is embedded in the outer wall of the catalyst tube.

[0010] As a preferred embodiment of the present invention, one end of the connecting pipe penetrates the mounting housing and extends to the outer wall of the mounting housing to install a high-pressure air pump, and one end of the connecting pipe penetrates the baffle and extends to the outer wall of the baffle to install a connector. An annular pipe is provided in the inner cavity of the catalytic cylinder and on the outer wall of the connecting pipe, wherein multiple sets of annular pipes are arranged sequentially from top to bottom, and an air outlet is arranged in a ring on the outer wall of the annular pipe.

[0011] As a preferred embodiment of the present invention, the cleaning component includes a fixed base, which is mounted on the bottom outer wall of a fixed chassis. A connecting groove is formed on the outer wall of the fixed base, wherein the catalytic cylinder is located in the inner cavity of the connecting groove, and an installation groove is formed on one side of the connecting groove and on the side wall of the fixed base.

[0012] As a preferred embodiment of the present invention, a wave-shaped protrusion is provided on the inner wall of the mounting groove, a top block is slidably connected to the outer wall of the wave-shaped protrusion, and a mounting ring is rotatably connected to the inner wall of the mounting groove, wherein there is a gap between the mounting ring and the mounting groove, and the top block is connected to the side wall of the mounting ring.

[0013] As a preferred embodiment of the present invention, the inner wall of the mounting ring is provided with fan blades in a ring, and a fixing rod is installed at the bottom end of the mounting ring. Multiple sets of fixing rods are arranged in a ring and are located on the outer wall of the mounting ring respectively. The fixing rods are arranged in pairs, and rotating rods are rotatably connected to the inner walls of the opposing fixing rods.

[0014] As a preferred embodiment of the present invention, a rotating sleeve is rotatably connected to the outer wall of the rotating rod, a limit block is installed on one side of the outer wall of the rotating sleeve, and bristles are installed on the other side of the outer wall of the rotating sleeve, and the bristles are symmetrically arranged, with the bristles located on one side of the catalytic cylinder.

[0015] As a preferred embodiment of the present invention, the control cabinet is connected to the high-pressure air pump via a wire and the connection method is electrical connection. A fixing plate is provided on the inner wall of the mounting bracket, wherein the cross-section of the fixing plate is L-shaped and the fixing plate is located on one side of the escalator.

[0016] This invention, by incorporating a cleaning component in a denitrification device with a cleaning mechanism, enables brush bristles to remove dust from the catalytic tube. When the top block and the corrugated protrusions make indirect contact, the mounting ring moves up and down, simultaneously causing the cleaning component to rotate. This, in turn, causes the rotating sleeve within the cleaning component to move the brush bristles up and down, allowing for better removal of dust from the catalytic tube surface. This solves the problem of incomplete dust removal from the catalyst surface due to an improperly designed or unevenly cleaned dust removal device. Over time, this leads to increased catalyst surface blockage and poor catalytic performance.

[0017] This invention enables high-pressure gas to be introduced into the inner cavity of the catalytic tube through the outlet by setting a denitrification component in a denitrification device with a cleaning mechanism. Since a baffle is set at the bottom port of the catalytic tube, when the inner cavity of the catalytic tube is filled with high-pressure gas, the high-pressure gas rushes out through the microporous structure of the catalytic tube. When the high-pressure gas rushes out of the micropores of the catalytic tube, it will carry out the fine dust inside the micropores. After the catalytic tube is flushed by the high-pressure gas, the inside of the micropores of the catalytic tube will be cleaner. This solves the problem that although the outer surface of the denitrification catalyst may be clean, tiny dust particles can still penetrate the surface and enter the micropores, causing blockage.

[0018] This invention addresses the problem of existing denitrification devices having a large overall footprint, which makes installation and maintenance inconvenient. The invention involves installing a mounting bracket and a fixed bracket within a denitrification device with a cleaning mechanism. The desulfurization tower is placed at the lower end of the fixed bracket, and the post-treatment tower is placed at the upper end of the fixed bracket. The mounting bracket's inner cavity contains a mounting shell, allowing the originally horizontally placed denitrification device to be vertically positioned within the mounting shell. This vertical arrangement reduces the device's footprint and solves the problem of existing denitrification devices having a large overall footprint, leading to inconvenience during installation and subsequent maintenance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a side view of the structure of the present invention;

[0021] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of structure A;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the mounting housing of the present invention;

[0023] Figure 5 For the present invention Figure 4 Enlarged schematic diagram of structure B;

[0024] Figure 6 This is a schematic diagram of the denitrification component structure of the present invention;

[0025] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the C-structure;

[0026] Figure 8 For the present invention Figure 6 A magnified schematic diagram of the D structure.

[0027] In the diagram: 1. Mounting bracket; 2. Control cabinet; 3. Ladder; 4. Fixed bracket; 5. Deacidification tower; 6. Post-treatment tower; 7. Mounting shell; 8. Denitrification assembly; 801. Fixed chassis; 802. Ventilation trough; 803. Catalytic converter; 804. Connecting hole; 805. Baffle; 806. Connecting pipe; 807. High-pressure air pump; 808. Connecting parts; 809. Annular pipe; 810. Air outlet; 9. Cleaning assembly; 901. Fixed base; 902, connecting groove; 903, mounting groove; 904, corrugated protrusion; 905, top block; 906, mounting ring; 907, fan blade; 908, fixed rod; 909, rotating rod; 910, rotating sleeve; 911, limiting block; 912, brush bristles; 10, first guide tube; 11, second guide tube; 12, connecting pipe; 13, electrically controlled valve; 14, third guide tube; 15, ash hopper collector; 16, fixed plate. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0029] Example: Please refer to Figure 1-8The denitrification device with a cleaning mechanism shown includes a mounting bracket 1, a control cabinet 2 installed on the inner wall of the mounting bracket 1, a ladder 3 installed on one side of the control cabinet 2 and on the inner wall of the mounting bracket 1, a fixed bracket 4 installed on one side of the mounting bracket 1 and corresponding to the ladder 3, a deacidification tower 5 installed on the inner wall of the fixed bracket 4, a post-treatment tower 6 installed directly above the deacidification tower 5 and on the inner wall of the fixed bracket 4, and a mounting housing 7 installed on the inner wall of the mounting bracket 1.

[0030] A denitrification assembly 8 is installed on the inner wall of the mounting housing 7. A cleaning assembly 9 is installed on one side of the denitrification assembly 8 and on the inner wall of the mounting housing 7. A deacidification tower 5 is connected to the outer wall of the mounting housing 7 via a first conduit 10. A second conduit 11 is provided on the top outer wall of the mounting housing 7. A connecting pipe 12 is provided on one side of the second conduit 11 and at the top of the mounting housing 7. An electrically controlled valve 13 is installed on the outer wall of the second conduit 11. One end of the electrically controlled valve 13 is connected to a post-treatment tower 6 via the second conduit 11. A dust collector 15 is connected to the bottom of the mounting housing 7 via a third conduit 14.

[0031] In this embodiment, specific references Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The denitrification assembly 8 includes a fixed base 801. Two sets of fixed bases 801 are arranged sequentially from top to bottom on the inner wall of the mounting housing 7. A venting groove 802 is annularly formed on the outer wall of the fixed base 801. A catalyst cartridge 803 is embedded in the bottom of the fixed base 801. The catalyst cartridge 803 is composed of ceramic fiber tubes impregnated with catalyst. A connecting hole 804 is formed at the top of the catalyst cartridge 803, and a second conduit 11 is inserted and connected to the inner wall of the connecting hole 804. A baffle 805 is provided at the bottom of the catalyst cartridge 803. A connecting pipe 806 is embedded in the outer wall of the catalytic cylinder 803. One end of the connecting pipe 806 passes through the mounting housing 7 and extends to the outer wall of the mounting housing 7 where a high-pressure air pump 807 is installed. The other end of the connecting pipe 806 passes through the baffle 805 and extends to the outer wall of the baffle 805 where a connector 808 is installed. An annular pipe 809 is provided in the inner cavity of the catalytic cylinder 803 and on the outer wall of the connecting pipe 806. Multiple sets of annular pipes 809 are arranged from top to bottom, and an outlet 810 is arranged in a ring on the outer wall of the annular pipe 809.

[0032] Based on the above structural and connection relationships, an annular tube 809 is provided on the inner cavity of the catalyst cylinder 803 and on the outer wall of the connecting pipe 806. Multiple sets of annular tubes 809 are arranged sequentially from top to bottom, and an outlet 810 is arranged in a ring on the outer wall of the annular tube 809. High-pressure gas is filled into the inner cavity of the catalyst cylinder 803 through the outlet 810. Since a baffle 805 is provided at the bottom port of the catalyst cylinder 803, when the inner cavity of the catalyst cylinder 803 is filled with high-pressure gas, the high-pressure gas rushes out through the microporous structure of the catalyst cylinder 803. When the high-pressure gas rushes out of the micropores of the catalyst cylinder 803, it will carry out the fine dust inside the micropore cavity. After the catalyst cylinder 803 is flushed by the high-pressure gas, the inside of the micropores of the catalyst cylinder 803 will be cleaner.

[0033] In this embodiment, specific references Figure 1 , Figure 2 , Figure 4 , Figure 7 and Figure 8 The cleaning component 9 includes a fixed base 901, which is mounted on the bottom outer wall of a fixed chassis 801. A connecting groove 902 is formed on the outer wall of the fixed base 901, with the catalytic cylinder 803 located within the inner cavity of the connecting groove 902. An installation groove 903 is formed on one side of the connecting groove 902 and on the side wall of the fixed base 901. A corrugated protrusion 904 is provided on the inner wall of the installation groove 903, and a top block 905 is slidably connected to the outer wall of the corrugated protrusion 904. An installation ring 906 is rotatably connected to the inner wall of the installation groove 903, with a gap between the installation ring 906 and the installation groove 903, and the top block is connected to the side wall of the installation ring 906. 905. Fan blades 907 are arranged in a ring on the inner wall of the mounting ring 906. A fixing rod 908 is installed at the bottom of the mounting ring 906. Multiple sets of fixing rods 908 are arranged in a ring and are located on the outer wall of the mounting ring 906. The fixing rods 908 are arranged in pairs. Rotating rods 909 are rotatably connected to the inner walls of the opposing fixing rods 908. Rotating sleeves 910 are rotatably connected to the outer walls of the rotating rods 909. A limit block 911 is installed on the outer wall of one side of the rotating sleeve 910, and brush bristles 912 are installed on the outer wall of the other side of the rotating sleeve 910. The brush bristles 912 are symmetrical and are located on one side of the catalyst cylinder 803.

[0034] Based on the above structural and connection relationships, when the high-pressure gas drives the fan blade 907 to rotate, it in turn drives the mounting ring 906 to rotate. When the mounting ring 906 rotates, it rotates on the inner wall of the mounting groove 903, which in turn drives the fixing rod 908 to rotate. When the top block 905 rotates under the influence of the mounting ring 906, it contacts the corrugated protrusion 904. When the top tip of the top block 905 contacts the crest of the corrugated protrusion 904, it will... The top block 905 drives the mounting ring 906 to move upward, which in turn causes the mounting ring 906 to drive the rotating rod 909 to move upward via the fixing rod 908. Conversely, when the bottom end of the top block 905 contacts the trough of the corrugated protrusion 904, the top block 905 drives the mounting ring 906 to move downward, which in turn causes the mounting ring 906 to drive the rotating rod 909 to move downward via the fixing rod 908. This causes the rotating sleeve 910 in the cleaning assembly 9 to drive the brush bristles 912 to move up and down, and the brush bristles 912 to better brush away dust from the surface of the catalytic cylinder 803.

[0035] The control cabinet 2 is electrically connected to the high-pressure air pump 807 via a wire, which enables the control cabinet 2 to control the operation of the high-pressure air pump 807. The inner wall of the mounting bracket 1 is provided with a fixing plate 16, which has an L-shaped cross-section. The fixing plate 16 is located on one side of the escalator 3. When the operator passes through the escalator 3 and enters the fixing plate 16, the fixing plate 16 and the mounting bracket 1 form an operating platform to facilitate the operator's work.

[0036] When the denitrification device with cleaning mechanism is working, the flue gas from the desulfurization tower 5 flows into the mounting shell 7 through the first conduit 10, causing the NOx in the flue gas and the catalyst impregnated in the ceramic fiber tube of the catalytic cylinder 803 to react with the NOx to generate nitrogen and water. At the same time, the dust generated during the denitrification process falls into the bottom of the inner cavity of the mounting shell 7, and then the dust collector 15 collects the dust in the inner cavity of the mounting shell 7. When the dust in the flue gas blocks the micropores of the catalytic cylinder 803, it is only necessary to connect the connecting pipe 12 to the external high-pressure gas pipeline, so that the high-pressure gas enters the inner cavity of the mounting shell 7 through the connecting pipe 12.

[0037] When high-pressure gas enters the inner cavity of the mounting housing 7, it passes through the fixed chassis 801 and the venting groove 802, blowing away dust from the surface of the catalytic cylinder 803. Simultaneously, the high-pressure gas drives the fan blade 907 to rotate, which in turn drives the mounting ring 906 to rotate. As the mounting ring 906 rotates, it rotates on the inner wall of the mounting groove 903, which in turn drives the fixed rod 908 to rotate.

[0038] When the fixed rod 908 is rotated, it causes the rotating sleeve 910 to rotate via the rotating rod 909. When the rotating sleeve 910 rotates, it causes the limiting block 911 to rotate. Due to centrifugal force, the limiting block 911 is subjected to an outward force, which causes the limiting block 911 to drive the rotating sleeve 910 to rotate on the outer wall of the rotating rod 909. The limiting block 911 and the rotating sleeve 910 tend to be in a horizontal position, which causes the rotating sleeve 910 to drive the brush bristles 912 to brush away dust from the surface of the catalyst cylinder 803. At the same time, when the mounting ring 906 rotates, it causes the top block 905 to rotate. Since the top block 905 and the corrugated protrusion 904 are in contact, when the top block 905 is rotated under the drive of the mounting ring 906, the top block 905 and the corrugated protrusion 904 are in contact.

[0039] When the top end of the top block 905 contacts the crest of the wave protrusion 904, the top block 905 will cause the mounting ring 906 to move upward, which in turn will cause the mounting ring 906 to move upward via the fixing rod 908 and the rotating rod 909. Conversely, when the bottom end of the top block 905 contacts the trough of the wave protrusion 904, the top block 905 will cause the mounting ring 906 to move downward, which in turn will cause the mounting ring 906 to move downward via the fixing rod 908 and the rotating rod 909.

[0040] The top block 905 and the wave-shaped protrusion 904 make indirect contact, thereby causing the mounting ring 906 to move up and down. At the same time, the mounting ring 906 drives the cleaning component 9 to rotate. The two work together to cause the rotating sleeve 910 in the cleaning component 9 to drive the brush bristles 912 to move up and down. The brush bristles 912 can better brush away the dust on the surface of the catalyst cylinder 803, thereby solving the problem that unreasonable dust removal device design or uneven dust removal effect will lead to the dust accumulation on the catalyst surface not being completely removed. Over time, the problem of catalyst surface blockage will gradually aggravate, resulting in poor catalytic effect.

[0041] By turning on the switch in control cabinet 2, the high-pressure air pump 807 is activated. When the high-pressure air pump 807 operates, it generates high-pressure gas, which flows through the connecting pipe 806 into the inner cavity of the annular pipe 809. The high-pressure gas then enters the inner cavity of the catalytic cylinder 803 through the outlet 810. Since a baffle 805 is provided at the bottom port of the catalytic cylinder 803, when the inner cavity of the catalytic cylinder 803 is filled with high-pressure gas, the high-pressure gas rushes out through the microporous structure of the catalytic cylinder 803. When the high-pressure gas rushes out of the micropores of the catalytic cylinder 803, it carries out the fine dust inside the micropores. The flushing of the catalytic cylinder 803 by the high-pressure gas makes the inside of the micropores of the catalytic cylinder 803 cleaner, thus solving the problem that although the outer surface of the denitrification catalyst may remain clean, tiny dust particles can still penetrate the surface and enter the micropores, causing blockage.

[0042] By placing the desulfurization tower 5 at the lower end of the fixed support 4 and the post-treatment tower 6 at the upper end of the fixed support 4, and by providing an installation shell 7 in the inner cavity of the mounting support 1, the originally horizontally placed denitrification device is vertically installed in the inner cavity of the installation shell 7, thereby arranging the device vertically and reducing the footprint of the device. This solves the problem that the existing denitrification devices occupy a large area, which makes the installation of the denitrification device inconvenient and the subsequent maintenance inconvenient.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A denitrification device with a cleaning mechanism, comprising a mounting bracket (1), characterized in that: A control cabinet (2) is provided on the inner wall of the mounting bracket (1). A ladder (3) is provided on one side of the control cabinet (2) and on the inner wall of the mounting bracket (1). A fixed bracket (4) is provided on one side of the mounting bracket (1) and corresponding to the ladder (3). A deacidification tower (5) is installed on the inner wall of the fixed bracket (4). A post-treatment tower (6) is provided directly above the deacidification tower (5) and on the inner wall of the fixed bracket (4). A mounting shell (7) is provided on the inner wall of the mounting bracket (1). A denitrification assembly (8) is installed on the inner wall of the mounting housing (7). A cleaning assembly (9) is installed on one side of the denitrification assembly (8) and on the inner wall of the mounting housing (7). A deacidification tower (5) is connected to the outer wall of the mounting housing (7) via a first conduit (10). A second conduit (11) is provided on the top outer wall of the mounting housing (7). A connecting pipe (12) is provided on one side of the second conduit (11) and at the top of the mounting housing (7). An electrically controlled valve (13) is installed on the outer wall of the second conduit (11). One end of the electrically controlled valve (13) is connected to a post-treatment tower (6) via the second conduit (11). A dust collector (15) is connected to the bottom of the mounting housing (7) via a third conduit (14). The denitrification assembly (8) includes a fixed chassis (801), which has two sets arranged from top to bottom and located on the inner wall of the mounting housing (7). A ventilation groove (802) is provided in a ring on the outer wall of the fixed chassis (801), and a catalyst cylinder (803) is embedded in the bottom of the fixed chassis (801). The cleaning component (9) includes a fixed base (901) which is mounted on the bottom outer wall of a fixed chassis (801). A connecting groove (902) is provided on the outer wall of the fixed base (901), wherein the catalyst cylinder (803) is located in the inner cavity of the connecting groove (902). An installation groove (903) is provided on one side of the connecting groove (902) and on the side wall of the fixed base (901).

2. The denitrification device with a cleaning mechanism according to claim 1, characterized in that: The catalyst tube (803) is composed of a ceramic fiber tube impregnated with a catalyst. The top of the catalyst tube (803) is provided with a connecting hole (804), and a second conduit (11) is inserted and connected to the inner wall of the connecting hole (804). A baffle (805) is provided at the bottom of the catalyst tube (803), and a connecting tube (806) is embedded in the outer wall of the catalyst tube (803).

3. A denitrification device with a cleaning mechanism according to claim 2, characterized in that: One end of the connecting pipe (806) passes through the mounting housing (7) and extends to the outer wall of the mounting housing (7) where a high-pressure air pump (807) is installed. One end of the connecting pipe (806) passes through the baffle (805) and extends to the outer wall of the baffle (805) where a connector (808) is installed. An annular pipe (809) is provided in the inner cavity of the catalyst cylinder (803) and on the outer wall of the connecting pipe (806). Multiple sets of annular pipes (809) are arranged from top to bottom, and an outlet (810) is arranged in a ring on the outer wall of the annular pipe (809).

4. A denitrification device with a cleaning mechanism according to claim 1, characterized in that: The inner wall of the mounting groove (903) is provided with a wave-shaped protrusion (904), and a top block (905) is slidably connected to the outer wall of the wave-shaped protrusion (904). The inner wall of the mounting groove (903) is rotatably connected with a mounting ring (906), wherein there is a gap between the mounting ring (906) and the mounting groove (903), and the top block (905) is connected to the side wall of the mounting ring (906).

5. A denitrification device with a cleaning mechanism according to claim 4, characterized in that: The inner wall of the mounting ring (906) is provided with fan blades (907) arranged in a ring. The bottom end of the mounting ring (906) is provided with a fixing rod (908). Multiple sets of fixing rods (908) are arranged in a ring and are located on the outer wall of the mounting ring (906). The fixing rods (908) are arranged in pairs. Rotating rods (909) are rotatably connected to the inner walls of the fixing rods (908) opposite to each other.

6. A denitrification device with a cleaning mechanism according to claim 5, characterized in that: A rotating sleeve (910) is rotatably connected to the outer wall of the rotating rod (909). A limit block (911) is installed on the outer wall of one side of the rotating sleeve (910), and a brush (912) is installed on the outer wall of the other side of the rotating sleeve (910). The brush (912) has a symmetrical structure and is located on one side of the catalyst cylinder (803).

7. A denitrification device with a cleaning mechanism according to claim 3, characterized in that: The control cabinet (2) is connected to the high-pressure air pump (807) via a wire and the connection method is electrical connection. A fixing plate (16) is provided on the inner wall of the mounting bracket (1), wherein the cross-section of the fixing plate (16) is L-shaped and the fixing plate (16) is located on one side of the escalator (3).

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