Denitration device with cleaning mechanism

Abstract

The invention relates to the technical field of denitration devices, in particular to a denitration device with a cleaning mechanism, which comprises a mounting bracket, and a control cabinet is arranged on the inner wall of the mounting bracket; through indirect contact of a top block and a wave-shaped convex block, a mounting ring moves up and down, meanwhile, the mounting ring drives a cleaning assembly to rotate and move, through cooperation of the top block and the wave-shaped convex block, a rotating sleeve in the cleaning assembly drives bristles to move up and down, and the bristles better brush dust on the surface of a catalytic tube; high-pressure gas is filled into the inner cavity of the catalysis pipe through the gas outlet, the high-pressure gas rushes to the outside through the micropore structure of the catalysis pipe, and when the high-pressure gas rushes out of the micropores of the catalysis pipe, fine dust in the inner cavity of the micropores can be brought out; the deacidification tower is placed at the lower end of the fixing support, the post-treatment tower is placed at the upper end of the fixing support, and meanwhile, the denitration assembly is vertically arranged in the inner cavity of the mounting shell, so that the occupied area of the device is smaller, and the practicability of the device is better.

Description

Technical Field

[0001] The invention relates to the technical field of denitration devices, in particular to a denitration device with a cleaning mechanism. Background Art

[0002] Denitrification devices are widely used in places that produce a large amount of flue gas, such as coal-fired power plants, industrial boilers, and waste incineration plants. Due to the high temperature and sufficient oxygen generated during the combustion process, these places are prone to form a large amount of NOx, so it is necessary to install denitrification devices to reduce their emissions. Denitrification devices mainly use two technologies, selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR), to remove NOx from flue gas. SCR technology reacts reducing agents such as ammonia or urea with NOx to produce nitrogen and water under the action of a catalyst; while SNCR technology does not use a catalyst and directly sprays the reducing agent into the flue gas under high temperature conditions to react with NOx. Denitrification devices are a type of equipment specially designed to reduce and control the emission of nitrogen oxides in flue gas. It converts NOx in flue gas into harmless or low-harmful substances by adopting specific technical means, thereby reducing its impact on the environment and human health. The performance of denitrification devices is usually evaluated by indicators such as denitrification efficiency and ammonia escape rate. Denitrification efficiency refers to the ability of the device to remove NOx, while ammonia escape rate refers to the proportion of ammonia that does not participate in the reaction to the total amount of ammonia input. These two indicators are crucial to evaluate the performance of the denitrification device; However, when the existing denitrification devices are used for a long time, 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 cleaning devices, but if the cleaning devices are not designed properly or the cleaning effect is uneven, the dust on the catalyst surface will not be completely removed. In the long run, the catalyst surface blockage problem will gradually increase, resulting in poor catalytic effect; at the same time, the existing denitrification devices occupy a large area as a whole, which will cause the denitrification device to be inconvenient to install and subsequent maintenance to be inconvenient. Summary of the invention

[0003] The present invention provides a denitration device with a cleaning mechanism to solve the above-mentioned problem.

[0004] To achieve the above object, the present invention provides the following technical solutions: A denitration device with a cleaning mechanism comprises a mounting bracket, a control cabinet is arranged on the inner wall of the mounting bracket, an escalator is arranged on one side of the control cabinet and located on the inner wall of the mounting bracket, a fixed bracket is arranged on one side of the mounting bracket and corresponding to the escalator, a deacidification tower is installed on the inner wall of the fixed bracket, a post-treatment tower is arranged directly above the deacidification tower and located on the inner wall of the fixed bracket, and a mounting shell is arranged on the inner wall of the mounting bracket; A denitration component is installed on the inner wall of the installation shell, a cleaning component is installed on one side of the denitration component and located on the inner wall of the installation shell, a deacidification tower is connected to the outer wall of the installation shell through a first conduit, a second conduit is provided on the top outer wall of the installation shell, a conducting pipe is provided on one side of the second conduit and located at the top of the installation shell, an electric-controlled valve is installed on the outer wall of the second conduit, one end of the electric-controlled valve is connected to the post-treatment tower through the second conduit, and the bottom of the installation shell is connected to the ash hopper collector through a third conduit.

[0005] As a preferred solution of the present invention, the denitrification component includes a fixed chassis, which is provided with two groups from top to bottom and are respectively located on the inner wall of the mounting shell, a ventilation groove is opened in a ring shape on the outer wall of the fixed chassis, and a catalytic cartridge is embedded in the bottom of the fixed chassis.

[0006] As a preferred solution of the present invention, the catalytic cylinder is composed of a ceramic fiber tube impregnated with a catalyst, wherein a connecting hole is opened at the top of the catalytic cylinder, and a second conduit is plugged and connected to the inner wall of the connecting hole, a baffle is arranged at the bottom end of the catalytic cylinder, and a connecting tube is embedded in the outer wall of the catalytic cylinder.

[0007] As a preferred solution of the present invention, one end of the connecting pipe passes through the mounting shell and extends to the outer wall of the mounting shell on which a high-pressure air pump is installed, one end of the connecting pipe passes through the baffle and extends to the outer wall of the baffle on which a connecting piece is installed, an annular tube is arranged in the inner cavity of the catalytic cylinder and on the outer wall of the connecting tube, wherein multiple groups of annular tubes are arranged in sequence from top to bottom, and an air outlet is arranged in a ring shape on the outer wall of the annular tube.

[0008] As a preferred solution of the present invention, the cleaning assembly includes a fixed base, which is installed on the bottom outer wall of the fixed chassis, and a connecting groove is opened on the outer wall of the fixed base, wherein the catalytic tube is located in the inner cavity of the connecting groove, and an installation groove is opened on one side of the connecting groove and on the side wall of the fixed base.

[0009] As a preferred solution of the present invention, a corrugated protrusion is provided on the inner wall of the mounting groove, a top block is slidably connected to the outer wall of the corrugated 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 side wall of the mounting ring is connected to the top block.

[0010] As a preferred solution of the present invention, fan blades are arranged in a ring shape on the inner wall of the mounting ring, and a fixing rod is installed at the bottom end of the mounting ring, wherein the fixing rods are arranged in a ring shape in multiple groups and are respectively located on the outer wall of the mounting ring, and the fixing rods are grouped in pairs, and rotating rods are rotatably connected on the opposite inner walls of the fixing rods.

[0011] As a preferred solution of the present invention, a rotating sleeve is rotatably connected to the outer wall of the rotating rod, a limiting block is installed on the outer wall of one side of the rotating sleeve, and bristles are installed on the outer wall of the other side of the rotating sleeve, and the bristles are symmetrically structured and located on one side of the catalytic cylinder.

[0012] As a preferred solution of the present invention, the control cabinet is connected to the high-pressure air pump through wires 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 an L-shaped structure, and the fixing plate is located on one side of the escalator.

[0013] The present invention can realize that the bristles can brush away the dust on the catalytic tube by arranging a cleaning component in the denitrification device with a cleaning mechanism. When the top block and the corrugated protrusion are indirectly in contact, the mounting ring is moved up and down, and at the same time, the mounting ring drives the cleaning component to rotate and move. The two cooperate with each other, so that the rotating sleeve in the cleaning component drives the bristles to move up and down, and the bristles can better brush away the dust on the surface of the catalytic tube, thereby solving the problem of unreasonable design of the cleaning device or uneven cleaning effect, which will result in the dust on the catalyst surface not being completely removed. In the long run, the clogging problem of the catalyst surface will gradually aggravate, resulting in poor catalytic effect.

[0014] The present invention can realize that high-pressure gas is filled into the inner cavity of the catalytic tube through the gas outlet by arranging a denitration component in a denitration device with a cleaning mechanism. Since a baffle is arranged 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 to the outside through the microporous structure of the catalytic tube. When the high-pressure gas rushes out of the micropores of the catalytic tube, it will bring out fine dust in the inner cavity of 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, thereby solving the problem that the outer surface of the denitration catalyst may remain clean, but tiny dust particles can still penetrate the surface and enter the inside of the micropores, causing blockage.

[0015] The present invention arranges an installation bracket and a fixed bracket in a denitrification device with a cleaning mechanism, places a deacidification tower at the lower end of the fixed bracket, places a post-treatment tower at the upper end of the fixed bracket, and simultaneously an installation shell is provided in the inner cavity of the installation bracket, and the originally horizontally placed denitrification device is vertically arranged in the inner cavity of the installation shell, and then the device is arranged vertically to make the device occupy a smaller area, thereby solving the problem that the existing denitrification device occupies a large area as a whole, which makes the installation of the denitrification device inconvenient and the subsequent maintenance inconvenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a side view structural schematic diagram of the present invention; Figure 3 For the present invention Figure 2 A magnified schematic diagram of the structure of A; Figure 4 It is a schematic diagram of the structure of the installation housing of the present invention; Figure 5 For the present invention Figure 4 A magnified schematic diagram of the B structure; Figure 6 It is a schematic diagram of the structure of the denitration component of the present invention; Figure 7 For the present invention Figure 6 A magnified schematic diagram of the C structure; Figure 8 For the present invention Figure 6 Schematic diagram of the enlarged D structure.

[0017] In the figure: 1. Mounting bracket; 2. Control cabinet; 3. Escalator; 4. Fixed bracket; 5. Deacidification tower; 6. Post-treatment tower; 7. Mounting shell; 8. Denitration component; 801. Fixed chassis; 802. Ventilation slot; 803. Catalytic cylinder; 804. Connecting hole; 805. Baffle; 806. Connecting pipe; 807. High-pressure air pump; 808. Connecting piece; 809. Ring pipe; 810. Air outlet; 9. Cleaning component; 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, limit block; 912, bristles; 10, first conduit; 11, second conduit; 12, conducting pipe; 13, electric control valve; 14, third conduit; 15, ash hopper collector; 16, fixed plate. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] Example: See Figure 1-8 A denitration device with a cleaning mechanism is shown, comprising a mounting bracket 1, a control cabinet 2 is arranged on the inner wall of the mounting bracket 1, an escalator 3 is arranged on one side of the control cabinet 2 and located on the inner wall of the mounting bracket 1, a fixed bracket 4 is arranged on one side of the mounting bracket 1 and corresponding to the escalator 3, a deacidification tower 5 is installed on the inner wall of the fixed bracket 4, a post-treatment tower 6 is arranged directly above the deacidification tower 5 and located on the inner wall of the fixed bracket 4, and a mounting shell 7 is arranged on the inner wall of the mounting bracket 1; A denitration component 8 is installed on the inner wall of the installation shell 7, a cleaning component 9 is installed on one side of the denitration component 8 and located on the inner wall of the installation shell 7, a deacidification tower 5 is connected to the outer wall of the installation shell 7 through a first conduit 10, a second conduit 11 is arranged on the outer wall of the top end of the installation shell 7, a conducting pipe 12 is arranged on one side of the second conduit 11 and located at the top end of the installation shell 7, an electric-controlled valve 13 is installed on the outer wall of the second conduit 11, one end of the electric-controlled valve 13 is connected to the post-treatment tower 6 through the second conduit 11, and the bottom of the installation shell 7 is connected to the ash hopper collector 15 through a third conduit 14.

[0020] In this embodiment, specific reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The denitration assembly 8 includes a fixed chassis 801, and the fixed chassis 801 is provided with two groups from top to bottom and respectively located on the inner wall of the mounting shell 7, and a ventilation groove 802 is provided in a ring shape on the outer wall of the fixed chassis 801, and a catalytic cartridge 803 is embedded in the bottom of the fixed chassis 801, and the catalytic cartridge 803 is composed of a ceramic fiber tube impregnated with a catalyst, wherein a connecting hole 804 is provided at the top of the catalytic cartridge 803, and a second conduit 11 is plugged and connected to the inner wall of the connecting hole 804, and a baffle 805 is provided at the bottom of the catalytic cartridge 803, A connecting pipe 806 is embedded in the outer wall of the catalytic tube 803, one end of the connecting pipe 806 penetrates the mounting shell 7 and extends to the outer wall of the mounting shell 7 where a high-pressure air pump 807 is installed, one end of the connecting pipe 806 penetrates the baffle 805 and extends to the outer wall of the baffle 805 where a connecting piece 808 is installed, an annular tube 809 is arranged in the inner cavity of the catalytic tube 803 and on the outer wall of the connecting pipe 806, wherein multiple groups of the annular tubes 809 are arranged in sequence from top to bottom, and an air outlet 810 is arranged in a ring shape on the outer wall of the annular tube 809.

[0021] Based on the above-mentioned structural relationship and connection relationship, an annular tube 809 is provided in the inner cavity of the catalytic tube 803 and on the outer wall of the connecting tube 806, wherein the annular tubes 809 are arranged in sequence in multiple groups from top to bottom, and an air outlet 810 is arranged in a ring shape on the outer wall of the annular tube 809, so that the high-pressure gas is filled into the inner cavity of the catalytic tube 803 through the air outlet 810. Since a baffle 805 is provided at the bottom port of the catalytic tube 803, when the inner cavity of the catalytic tube 803 is filled with high-pressure gas, the high-pressure gas rushes to the outside through the microporous structure of the catalytic tube 803. When the high-pressure gas rushes out of the micropores of the catalytic tube 803, it will bring out the fine dust in the inner cavity of the micropores. After the catalytic tube 803 is flushed by the high-pressure gas, the inside of the micropores of the catalytic tube 803 will be cleaner.

[0022] In this embodiment, specific reference Figure 1 , Figure 2 , Figure 4 , Figure 7 and Figure 8 The cleaning assembly 9 includes a fixed base 901, which is mounted on the bottom outer wall of the fixed chassis 801. A connecting groove 902 is provided on the outer wall of the fixed base 901, wherein the catalytic cartridge 803 is located in the inner cavity of the connecting groove 902, and a mounting groove 903 is provided 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 mounting groove 903, and a top block 905 is slidably connected to the outer wall of the corrugated protrusion 904. A mounting ring 906 is rotatably connected to the inner wall of the mounting groove 903, wherein there is a gap between the mounting ring 906 and the mounting groove 903, and the side wall of the mounting ring 906 is connected to the top block 905, fan blades 907 are arranged in a ring shape on the inner wall of the mounting ring 906, and a fixing rod 908 is installed at the bottom end of the mounting ring 906, wherein the fixing rods 908 are arranged in a ring shape in multiple groups and are respectively located on the outer wall of the mounting ring 906, and the fixing rods 908 are grouped in pairs, and rotating rods 909 are rotatably connected to the opposite inner walls of the fixing rods 908, and a rotating sleeve 910 is rotatably connected to the outer wall of the rotating rod 909, a limiting block 911 is installed on the outer wall of one side of the rotating sleeve 910, and bristles 912 are installed on the outer wall of the other side of the rotating sleeve 910, and the bristles 912 are symmetrically structured, and the bristles 912 are located on one side of the catalytic cylinder 803.

[0023] Based on the above structural relationship and connection relationship, when the high-pressure gas drives the fan blade 907 to rotate, the fan blade 907 drives the mounting ring 906 to rotate. When the mounting ring 906 rotates, the mounting ring 906 rotates on the inner wall of the mounting groove 903, and the mounting ring 906 drives the fixing rod 908 to rotate. When the top block 905 rotates driven by the mounting ring 906, the top block 905 contacts the corrugated protrusion 904. When the top of the top block 905 contacts the wave crest of the corrugated protrusion 904, it will cause The top block 905 drives the mounting ring 906 to move upward, and then the mounting ring 906 drives the rotating rod 909 to move upward through the fixed rod 908. On the contrary, when the bottom end of the top block 905 contacts the trough of the wave-shaped protrusion 904, the top block 905 drives the mounting ring 906 to move downward, and then the mounting ring 906 drives the rotating rod 909 to move downward through the fixed rod 908, and then the rotating sleeve 910 in the cleaning component 9 drives the bristles 912 to move up and down, and the bristles 912 can better brush away dust from the surface of the catalytic cylinder 803. Among them, the control cabinet 2 is connected to the high-pressure air pump 807 through a wire and the connection method is an electrical connection, so that the control cabinet 2 controls the high-pressure air pump 807 to operate and power on. 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 an L-shaped structure, and 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 for the operator to work.

[0024] When the denitrification device with a cleaning mechanism of the present scheme is working, the flue gas passing through the deacidification tower 5 flows into the installation shell 7 through the first conduit 10, so that the NOx in the flue gas and the catalyst impregnated in the ceramic fiber tube in the catalytic cartridge 803 react with the NOx to generate nitrogen and water. At the same time, the dust generated in the denitrification process falls into the bottom of the inner cavity of the installation shell 7, and then the ash hopper collector 15 collects the dust in the inner cavity of the installation shell 7. When the dust in the flue gas blocks the micropores of the catalytic cartridge 803, it is only necessary to connect the conducting pipe 12 to the external high-pressure gas pipeline, so that the high-pressure gas enters the inner cavity of the installation shell 7 through the conducting pipe 12.

[0025] When the high-pressure gas enters the inner cavity of the mounting shell 7, the high-pressure gas passes through the fixed chassis 801. When the high-pressure gas passes through the ventilation groove 802, the high-pressure gas blows away the dust on the surface of the catalyst tube 803. At the same time, the high-pressure gas drives the fan blades 907 to rotate, and then the fan blades 907 drive the mounting ring 906 to rotate. When the mounting ring 906 rotates, the mounting ring 906 rotates on the inner wall of the mounting groove 903, and then the mounting ring 906 drives the fixed rod 908 to rotate.

[0026] When the fixed rod 908 is rotated, the fixed rod 908 will drive the rotating sleeve 910 to rotate through the rotating rod 909. When the rotating sleeve 910 rotates, the rotating sleeve 910 will drive the limit block 911 to rotate. Due to the action of centrifugal force, the limit block 911 will be subjected to an outward force, so that the limit block 911 drives the rotating sleeve 910 to rotate on the outer wall of the rotating rod 909. The limit block 911 and the rotating sleeve 910 tend to a horizontal position, so that the rotating sleeve 910 drives the bristles 912 to brush dust off the surface of the catalytic cylinder 803. At the same time, when the mounting ring 906 rotates, the mounting ring 906 drives the top block 905 to rotate. Since the top block 905 is in contact with the corrugated protrusion 904, when the top block 905 is rotated driven by the mounting ring 906, the top block 905 is in contact with the corrugated protrusion 904.

[0027] When the top end of the top block 905 contacts the crest of the corrugated protrusion 904, the top block 905 drives the mounting ring 906 to move upward, and then the mounting ring 906 drives the rotating rod 909 to move upward through the fixed 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, and then the mounting ring 906 drives the rotating rod 909 to move downward through the fixed rod 908.

[0028] Through the indirect contact between the top block 905 and the corrugated protrusion 904, the mounting ring 906 is moved up and down, and at the same time, the mounting ring 906 drives the cleaning component 9 to rotate and move. The two cooperate, so that the rotating sleeve 910 in the cleaning component 9 drives the bristles 912 to move up and down, and the bristles 912 can better brush away the dust on the surface of the catalyst tube 803, thereby solving the problem of unreasonable design of the cleaning device or uneven cleaning effect, which will result in the dust on the catalyst surface not being completely removed. In the long run, the clogging problem of the catalyst surface will gradually aggravate, resulting in poor catalytic effect.

[0029] The switch is turned on through the control cabinet 2, so that the control cabinet 2 controls the high-pressure air pump 807 to operate. When the high-pressure air pump 807 operates to generate high-pressure gas, the high-pressure gas generated by the high-pressure air pump 807 will flow into the inner cavity of the annular tube 809 through the connecting pipe 806, and then the high-pressure gas will be filled into the inner cavity of the catalytic tube 803 through the gas outlet 810. Since a baffle 805 is provided at the bottom port of the catalytic tube 803, when the inner cavity of the catalytic tube 803 is filled with high-pressure gas, the high-pressure gas will rush to the outside through the microporous structure of the catalytic tube 803. When the high-pressure gas rushes out of the micropores of the catalytic tube 803, it will bring out the fine dust in the inner cavity of the micropores. After the catalytic tube 803 is flushed by the high-pressure gas, the inside of the micropores of the catalytic tube 803 will be cleaner, thereby solving the problem that the external surface of the denitrification catalyst may remain clean, but tiny dust particles can still penetrate the surface and enter the inside of the micropores, causing blockage.

[0030] By placing the deacidification tower 5 at the lower end of the fixed bracket 4, and the post-treatment tower 6 at the upper end of the fixed bracket 4, and at the same time providing the inner cavity of the mounting bracket 1 with a mounting shell 7, the originally horizontally placed denitrification device is vertically arranged in the inner cavity of the mounting shell 7, and then the device is arranged vertically to make the device occupy a smaller area, thereby solving the problem that the existing denitrification device occupies a large area as a whole, which makes the installation of the denitrification device inconvenient and the subsequent maintenance inconvenient.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A denitration device with a cleaning mechanism, comprising a mounting bracket (1), characterized in that: A control cabinet (2) is arranged on the inner wall of the mounting bracket (1); an escalator (3) is arranged on one side of the control cabinet (2) and located on the inner wall of the mounting bracket (1); a fixed bracket (4) is arranged on one side of the mounting bracket (1) and corresponding to the escalator (3); a deacidification tower (5) is arranged on the inner wall of the fixed bracket (4); a post-treatment tower (6) is arranged directly above the deacidification tower (5) and located on the inner wall of the fixed bracket (4); and a mounting shell (7) is arranged on the inner wall of the mounting bracket (1); A denitration component (8) is installed on the inner wall of the installation shell (7); a cleaning component (9) is installed on one side of the denitration component (8) and located on the inner wall of the installation shell (7); a deacidification tower (5) is connected to the outer wall of the installation shell (7) via a first conduit (10); a second conduit (11) is provided on the outer wall at the top end of the installation shell (7); a conducting pipe (12) is provided on one side of the second conduit (11) and located at the top end of the installation shell (7); an electric control valve (13) is installed on the outer wall of the second conduit (11); one end of the electric control valve (13) is connected to a post-treatment tower (6) via the second conduit (11); and the bottom of the installation shell (7) is connected to an ash hopper collector (15) via a third conduit (14).

2. A denitration device with a cleaning mechanism according to claim 1, characterized in that: The denitration assembly (8) comprises a fixed chassis (801), wherein two groups of the fixed chassis (801) are arranged in sequence from top to bottom and are respectively located on the inner wall of the mounting shell (7), a ventilation groove (802) is provided in a ring shape on the outer wall of the fixed chassis (801), and a catalytic cartridge (803) is embedded in the bottom of the fixed chassis (801).

3. A denitration device with a cleaning mechanism according to claim 2, characterized in that: The catalytic cylinder (803) is composed of a ceramic fiber tube impregnated with a catalyst, wherein a connecting hole (804) is opened at the top of the catalytic cylinder (803), and a second conduit (11) is plugged and connected to the inner wall of the connecting hole (804), a baffle (805) is arranged at the bottom end of the catalytic cylinder (803), and a connecting pipe (806) is embedded and installed on the outer wall of the catalytic cylinder (803).

4. A denitration device with a cleaning mechanism according to claim 3, characterized in that: One end of the connecting pipe (806) passes through the mounting shell (7) and extends to the outer wall of the mounting shell (7) on which 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) on which a connecting piece (808) is installed; an annular pipe (809) is arranged in the inner cavity of the catalytic cylinder (803) and on the outer wall of the connecting pipe (806); a plurality of groups of the annular pipes (809) are arranged in sequence from top to bottom, and an air outlet (810) is arranged in an annular shape on the outer wall of the annular pipe (809).

5. A denitration device with a cleaning mechanism according to claim 2, characterized in that: The cleaning assembly (9) comprises a fixed base (901), the fixed base (901) being mounted on the bottom outer wall of a fixed chassis (801), a connecting groove (902) being provided on the outer wall of the fixed base (901), wherein the catalytic cartridge (803) is located in the inner cavity of the connecting groove (902), and a mounting groove (903) is provided on one side of the connecting groove (902) and on the side wall of the fixed base (901).

6. A denitration device with a cleaning mechanism according to claim 5, characterized in that: A corrugated protrusion (904) is provided on the inner wall of the mounting groove (903), a top block (905) is slidably connected to the outer wall of the corrugated protrusion (904), and a mounting ring (906) is rotatably connected to the inner wall of the mounting groove (903), wherein a gap exists 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).

7. A denitration device with a cleaning mechanism according to claim 6, characterized in that: The inner wall of the mounting ring (906) is provided with fan blades (907) in an annular shape, and a fixing rod (908) is installed at the bottom end of the mounting ring (906), wherein the fixing rods (908) are arranged in an annular shape in multiple groups and are respectively located on the outer wall of the mounting ring (906), and the fixing rods (908) are grouped in pairs, and rotating rods (909) are rotatably connected to the inner walls opposite to each other of the fixing rods (908).

8. A denitration device with a cleaning mechanism according to claim 7, characterized in that: A rotating sleeve (910) is rotatably connected to the outer wall of the rotating rod (909), a limiting block (911) is installed on the outer wall of one side of the rotating sleeve (910), and bristles (912) are installed on the outer wall of the other side of the rotating sleeve (910), and the bristles (912) are symmetrically structured, and the bristles (912) are located on one side of the catalytic cylinder (803).

9. A denitration device with a cleaning mechanism according to claim 4, 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 an L-shaped structure, and the fixing plate (16) is located on one side of the escalator (3).

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