Solid catalyst modular reaction device for SNCR (selective non-catalytic reduction) denitration

Abstract

The invention relates to the technical field of selective non-catalytic reduction denitration, in particular to a solid catalyst modular reaction device for SNCR denitration, which comprises a support ring, the inner ring of the support ring is fixedly connected with a maintenance box, the bottom of the maintenance box is fixedly connected with a heating ring, the inner ring of the heating ring is fixedly connected with a reaction box, and the inner ring of the reaction box is fixedly connected with a water tank. The reaction box is positioned at the bottom of the maintenance box. According to the invention, the flue gas kinetic energy is converted into mechanical energy to drive the cleaning system, the continuous activity of the catalyst is greatly improved, after the dust-containing flue gas passes through the reaction zone, the high-speed airflow drives the impeller to rotate, and the reciprocating screw rod is driven to move through the transmission of the synchronous belt and the gear set, so that the hollow honeycomb tube scrapes up and down in the catalyst channel, and the surface dust on the surface is effectively removed; and meanwhile, rotary motion is converted into reciprocating vibration through a cam mechanism, shock waves generated by high-frequency impact of the rubber balls on the box body further loosen deep sediments, and a dual cleaning mechanism of mechanical scraping and vibration dust removal is formed.

Description

Technical Field

[0001] This invention relates to the field of selective non-catalytic reduction (SNCR) denitrification technology, specifically to a modular reaction device using a solid catalyst for SNCR denitrification. Background Technology

[0002] Selective non-catalytic reduction (SNCR) denitrification technology is an important means of treating nitrogen oxides in industrial flue gas and has been widely used in high-temperature flue gas treatment fields such as coal-fired boilers and waste incineration. However, in actual operation, traditional SNCR systems generally suffer from catalyst blockage, especially when treating industrial flue gas with high dust content. The continuous deposition of fly ash particles on the catalyst surface will significantly reduce catalytic activity, increase system resistance, and seriously affect denitrification efficiency. Existing solutions mainly rely on manual cleaning during shutdown or the addition of external power cleaning devices, which not only increases operation and maintenance costs but also leads to production interruptions, affecting continuous production of enterprises. In addition, conventional reaction device designs often neglect the effective utilization of flue gas kinetic energy, resulting in energy waste. In response to these technical defects, the industry urgently needs to develop a new type of modular denitrification reaction device with automatic cleaning function, energy self-sufficiency, and easy maintenance. Summary of the Invention

[0003] To address these issues, the present invention provides a modular reaction device for solid catalysts in SNCR denitrification.

[0004] The present invention provides the following technical solution: a modular reaction device for solid catalysts for SNCR denitrification, comprising a support ring, a maintenance box fixedly connected to the inner ring of the support ring, a heating ring fixedly connected to the bottom of the maintenance box, a reaction box fixedly connected to the inner ring of the heating ring, the reaction box being located at the bottom of the maintenance box, a honeycomb reactor fixedly connected to the inner wall of the reaction box, a box cover fixedly connected to the top of the maintenance box, and a mating component provided at the bottom of the box cover; The mating components include a U-shaped frame, the top of which is fixedly connected to the bottom of the box cover. An air outlet pipe is fixedly connected to the inner wall of the box cover. A third rotating rod is rotatably connected to the inner wall of the U-shaped frame. An impeller is fixedly connected to the top of the third rotating rod, and the impeller is located inside the air outlet pipe.

[0005] As a preferred embodiment of the present invention, a first rotating rod is rotatably connected to the bottom of the box cover, a second rotating rod is rotatably connected to the bottom of the box cover, a first support plate is fixedly connected to the bottom of the box cover, a first gear is fixedly connected to the bottom of the first rotating rod, a reciprocating screw is fixedly connected to the bottom of the first gear, fixing blocks are fixedly connected to both sides inside the maintenance box, a connecting box is fixedly connected to the inner side of the fixing blocks, a limiting plate is fixedly connected to the bottom of the inner wall of the connecting box, the honeycomb reactor is located at the bottom of the limiting plate, the distance between the limiting plate and the honeycomb reactor is 20cm, and a synchronous wheel is fixedly connected to the bottom of the third rotating rod and the surface of the first rotating rod.

[0006] In a preferred embodiment of the present invention, an L-shaped plate is threadedly connected to the surface of the reciprocating lead screw, a second support plate is fixedly connected to the bottom of the L-shaped plate, a third support plate is fixedly connected to the top of the fixing block, the bottom of the reciprocating lead screw is rotatably connected to the top of the third support plate, a hollow honeycomb tube is fixedly connected to the bottom of the second support plate, the surface of the hollow honeycomb tube is slidably connected to the inner wall of the honeycomb reactor, and the surface of the second support plate is slidably connected to the inner wall of the connecting box.

[0007] As a preferred embodiment of the present invention, the bottom of the reaction chamber is fixedly connected to a bottom cover, the inner wall of the bottom cover is fixedly connected to an air inlet pipe, the bottom of the support ring is fixedly connected to a support frame, the bottom of the support frame is fixedly connected to a base, and the number of support frames is four, which are arranged in a circular array.

[0008] As a preferred embodiment of the present invention, a timing belt is fitted onto the surfaces of the two timing pulleys, and a second gear is fixedly connected to the surface of the second rotating rod, the second gear meshing with the first gear.

[0009] As a preferred embodiment of the present invention, a first bevel gear is fixedly connected to the bottom of the second rotating rod, a fourth rotating rod is rotatably connected to the inner wall of the first support plate, and a second bevel gear is fixedly connected to the left end of the fourth rotating rod, with the first bevel gear meshing with the second bevel gear.

[0010] As a preferred embodiment of the present invention, a cylindrical cam is fixedly connected to the right end of the fourth rotating rod, a limiting frame is fixedly connected to the front surface of the first support plate, a reciprocating plate is slidably connected to the frame wall of the limiting frame, a mating rod is fixedly connected to the back surface of the reciprocating plate, a folding groove with the ends connected is opened on the surface of the cylindrical cam, the surface of the mating rod is slidably connected to the groove wall of the folding groove, and a rubber ball is fixedly connected to the right end of the reciprocating plate.

[0011] As a preferred embodiment of the present invention, the return groove of the cylindrical cam includes an inclined rising section, a horizontal holding section, and an inclined falling section. The return groove of the cylindrical cam forms a continuous closed loop trajectory. The end of the mating rod is provided with a wear-resistant ceramic coating. The mating rod and the return groove are in clearance fit. The rubber ball of the reciprocating plate is made of high-temperature resistant silicone material. The surface of the rubber ball of the reciprocating plate is uniformly distributed with hemispherical protrusions. The inner side of the limiting frame is provided with a self-lubricating graphite liner. The self-lubricating graphite liner provided on the inner side of the limiting frame is in sliding contact with the reciprocating plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are: In this invention, the kinetic energy of flue gas is converted into mechanical energy to drive the cleaning system, significantly improving the sustained activity of the catalyst. The device adopts a modular architecture, with a rigid support system ensuring operational stability. A heating ring maintains the optimal reaction temperature. The honeycomb reactor serves as the core area for efficient denitrification. When dust-laden flue gas passes through the reaction zone, the high-speed airflow drives the impeller to rotate, which, via a synchronous belt and gear set, drives the reciprocating screw to move. This causes the hollow honeycomb tubes to scrape up and down within the catalyst channel, effectively removing surface dust. Simultaneously, a cam mechanism converts the rotational motion into reciprocating vibration, and the high-frequency impact of the rubber ball on the housing generates shock waves that further loosen deep deposits. This innovative design employs a dual cleaning mechanism of mechanical scraping and vibration cleaning, achieving energy recovery and utilization. It completes the self-cleaning process without additional power, significantly reducing energy consumption and maintenance frequency. The modular flange structure facilitates quick disassembly and maintenance, adapting to different operating conditions. The entire system maintains stable denitrification efficiency even in high-dust environments, extending catalyst lifespan and solving the industry problem of easy clogging in traditional SNCR devices. It boasts outstanding advantages such as low operating costs, easy maintenance, and strong adaptability, providing an efficient and reliable solution for industrial flue gas treatment, aligning with the development trend of intelligent and energy-saving environmental protection equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Half-section view of the overall structure in the middle; Figure 3 For the present invention Figure 2 A partial structural sectional view in the image; Figure 4 For the present invention Figure 3 A partial structural plan view; Figure 5 For the present invention Figure 3 Bottom view of the mating component structure; Figure 6 For the present invention Figure 5 A schematic diagram of the power component structure; Figure 7For the present invention Figure 3 Enlarged view of point A in the image.

[0014] In the diagram: 1. Base; 2. Support frame; 3. Support ring; 4. Maintenance box; 5. Mating components; 6. Cover; 7. Exhaust pipe; 8. Heating ring; 9. Reactor; 10. Bottom cover; 11. Inlet pipe; 12. Honeycomb reactor; 13. Fixing block; 14. Connecting box; 15. Limiting plate; 16. Second support plate; 17. Third support plate; 18. Reciprocating screw; 19. L-shaped plate; 20. Hollow honeycomb tube; 501. U-shaped frame 502. Synchronous pulley; 503. Synchronous belt; 504. First rotating rod; 505. First gear; 506. Second rotating rod; 507. Second gear; 508. First bevel gear; 509. Fourth rotating rod; 510. Second bevel gear; 511. Cylindrical cam; 512. Matching rod; 513. Reciprocating plate; 514. Limiting frame; 515. Turnback groove; 516. First support plate; 517. Third rotating rod; 518. Impeller. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Please see Figures 1-7 The technical solution provided by the present invention specifically includes the following embodiments: Example: A modular reaction device for solid catalysts in SNCR denitrification includes a support ring 3, a maintenance box 4 fixedly connected to the inner ring of the support ring 3, a heating ring 8 fixedly connected to the bottom of the maintenance box 4, a reaction box 9 fixedly connected to the inner ring of the heating ring 8, the reaction box 9 being located at the bottom of the maintenance box 4, a honeycomb reactor 12 fixedly connected to the inner wall of the reaction box 9, a box cover 6 fixedly connected to the top of the maintenance box 4, and a mating component 5 provided at the bottom of the box cover 6; The mating component 5 includes a U-shaped frame 501, the top of which is fixedly connected to the bottom of the box cover 6. An air outlet pipe 7 is fixedly connected to the inner wall of the box cover 6. A third rotating rod 517 is rotatably connected to the inner wall of the U-shaped frame 501. An impeller 518 is fixedly connected to the top of the third rotating rod 517. The impeller 518 is located inside the air outlet pipe 7. An impeller 518 is installed inside the exhaust pipe 7. The impeller 518 is connected to the synchronous pulley 502 via the third rotating rod 517. The synchronous belt 503 transmits power to the first rotating rod 504, and then through the meshing of the first gear 505 and the second gear 506, the power is reversed. The flue gas enters from the bottom, flows through the reaction zone, and is discharged from the exhaust pipe 7. The high-speed airflow drives the impeller 518 to rotate. The rotation of the impeller 518 is transmitted to the reciprocating screw 18 and the vibration mechanism through the synchronous belt 503 and the gear set, realizing the conversion of the kinetic energy of the flue gas into mechanical energy. The device adopts a layered modular structure, consisting of a base 1, a support frame 2, and a support... The support ring 3 forms a rigid support system. The maintenance box 4 and the reaction box 9 are thermally coupled through the heating ring 8. The internal honeycomb reactor 12 serves as the core area for denitrification reaction. Its core innovation lies in using high-speed flue gas in the exhaust pipe 7 to drive the impeller 518 to rotate. The kinetic energy is transmitted to the gear set and reciprocating screw 18 through the synchronous pulley 502-synchronous belt 503 transmission system, which drives the L-shaped plate 19 and the hollow honeycomb tube 20 at its bottom to perform axial scraping motion within the honeycomb reactor 12, effectively removing the ash accumulated on the catalyst surface within a 20cm spacing range. At the same time, the cylindrical cam is driven by the bevel gear set. Rotation of 511 causes the mating rod 512 to move along the closed-loop trajectory of the return groove 515, pushing the high-temperature resistant silicone rubber ball with hemispherical protrusions to periodically impact the housing. The resulting mechanical vibration can be transmitted to the deep layer of the catalyst. Combined with the limiting frame 514 with a self-lubricating graphite liner, the vibration mechanism is ensured to operate for a long time. This device achieves three-level utilization of flue gas flow energy, rotational mechanical energy, and vibration impact energy through a pneumatic-mechanical energy conversion mechanism. The three-stage design of the return groove 515—tilting upward, horizontal maintenance, and tilting downward—allows the vibration frequency to be adjustable. The mating rod 512 with a wear-resistant ceramic coating... The clearance fit structure reduces transmission losses, and the overall design combines functionality and ease of maintenance: the modular flange structure of the support ring 3 facilitates disassembly and maintenance, the heating ring 8 maintains the reaction temperature and optimizes denitrification efficiency, the ring distribution of the four sets of support frames 2 ensures operational stability, and the synergistic effect of the hollow honeycomb tube 20 and the limiting plate 15 forms a three-dimensional dust removal network. This integrated design not only solves the problem of easy clogging of catalysts in traditional SNCR systems, but also reduces auxiliary energy consumption through energy recovery and utilization. Its dual cleaning mechanism of vibration dust removal and mechanical scraping can extend the service life of the catalyst.

[0017] The bottom of the cover 6 is rotatably connected to a first rotating rod 504, the bottom of the cover 6 is rotatably connected to a second rotating rod 506, the bottom of the cover 6 is fixedly connected to a first support plate 516, the bottom of the first rotating rod 504 is fixedly connected to a first gear 505, the bottom of the first gear 505 is fixedly connected to a reciprocating screw 18, both sides of the inside of the maintenance box 4 are fixedly connected to fixed blocks 13, the inside of the fixed blocks 13 is fixedly connected to a connecting box 14, the bottom of the inner wall of the connecting box 14 is fixedly connected to a limiting plate 15, the honeycomb reactor 12 is located at the bottom of the limiting plate 15, the distance between the limiting plate 15 and the honeycomb reactor 12 is 20cm, the bottom of the third rotating rod 517 and the surface of the first rotating rod 504 are both fixedly connected to a synchronous wheel 502; The maintenance box 4 is equipped with a fixing block 13, which supports the connecting box 14. The connecting box 14 is equipped with a limiting plate 15, which maintains a certain distance from the honeycomb reactor 12. The reciprocating screw 18 is threadedly engaged with the L-shaped plate 19, which drives the second support plate 16 and the hollow honeycomb tube 20 to move up and down. The third support plate 17 is fixed on the top of the fixing block 13 and serves as the bottom bearing seat of the screw. The flue gas undergoes a denitrification reaction in the honeycomb reactor 12, and the ash gradually accumulates on the catalyst surface. When the reciprocating screw 18 rotates, the L-shaped plate 19 drives the hollow honeycomb tube 20 to move up and down, mechanically scraping away the ash and ensuring the catalyst activity.

[0018] The reciprocating screw 18 is threadedly connected to an L-shaped plate 19. The bottom of the L-shaped plate 19 is fixedly connected to a second support plate 16. The top of the fixed block 13 is fixedly connected to a third support plate 17. The bottom of the reciprocating screw 18 is rotatably connected to the top of the third support plate 17. The bottom of the second support plate 16 is fixedly connected to a hollow honeycomb tube 20. The surface of the hollow honeycomb tube 20 is slidably connected to the inner wall of the honeycomb reactor 12. The surface of the second support plate 16 is slidably connected to the inner wall of the connecting box 14.

[0019] The bottom of the reaction chamber 9 is fixedly connected to a bottom cover 10, and the inner wall of the bottom cover 10 is fixedly connected to an air inlet pipe 11. The bottom of the support ring 3 is fixedly connected to a support frame 2, and the bottom of the support frame 2 is fixedly connected to a base 1. There are four support frames 2, and the four support frames 2 are arranged in a ring array. The base 1 serves as the load-bearing platform for the entire device, employing a welded carbon steel structure with anti-vibration pads installed at the bottom to ensure operational stability. The support frame 2 consists of four sets, evenly distributed in a ring, with the top fixed to the support ring 3 by bolts to form a rigid support structure. The support ring 3 is a ring flange structure, with its inner side fixedly connected to the maintenance box 4, providing overall support. The base 1 and support frame 2 ensure the stability of the device during operation and prevent displacement caused by vibration. The support ring 3 not only bears the weight of the maintenance box 4 and the reaction box 9 but also serves as an interface for modular disassembly and assembly, facilitating maintenance.

[0020] A timing belt 503 is fitted onto the surface of two timing pulleys 502. A second gear 507 is fixedly connected to the surface of the second rotating rod 506, and the second gear 507 meshes with the first gear 505. A first bevel gear 508 is fixedly connected to the bottom of the second rotating rod 506. A fourth rotating rod 509 is rotatably connected to the inner wall of the first support plate 516. A second bevel gear 510 is fixedly connected to the left end of the fourth rotating rod 509, and the first bevel gear 508 meshes with the second bevel gear 510. A cylindrical cam 511 is fixedly connected to the right end of the fourth rotating rod 509. A limit frame 514 is fixedly connected to the front surface of the first support plate 516. A reciprocating plate 513 is slidably connected to the frame wall of the limit frame 514. A mating rod 512 is fixedly connected to the back surface of the reciprocating plate 513. A folding groove 515 with the ends connected is opened on the surface of the cylindrical cam 511. The surface of the mating rod 512 is slidably connected to the groove wall of the folding groove 515. A rubber ball is fixedly connected to the right end of the reciprocating plate 513. The second rotating rod 506 drives the fourth rotating rod 509 through the first bevel gear 508 and the second bevel gear 510, which in turn drives the cylindrical cam 511 to rotate. The rod 512 moves along the cam's return groove 515, pushing the reciprocating plate 513 to cause the rubber ball to impact the inner wall of the maintenance box 4. The rotational motion of the cylindrical cam 511 is converted into the linear motion of the reciprocating plate 513, causing the rubber ball to periodically impact the box. The vibration generated by the impact is transmitted to the honeycomb reactor 12, loosening deep-seated dust and assisting mechanical scraping to improve the cleaning effect.

[0021] The cylindrical cam 511 has a return groove 515 including an inclined rising section, a horizontal holding section and an inclined falling section. The return groove 515 of the cylindrical cam 511 forms a continuous closed loop trajectory. The end of the mating rod 512 is provided with a wear-resistant ceramic coating. The mating rod 512 and the return groove 515 are in clearance fit. The rubber ball of the reciprocating plate 513 is made of high-temperature resistant silicone. The surface of the rubber ball of the reciprocating plate 513 is uniformly distributed with hemispherical protrusions. The inner side of the limiting frame 514 is provided with a self-lubricating graphite liner. The self-lubricating graphite liner provided on the inner side of the limiting frame 514 is in sliding contact with the reciprocating plate 513.

[0022] This SNCR solid catalyst modular reactor integrates flue gas kinetic energy recovery and catalyst self-cleaning functions through an innovative mechanical linkage design. The unit adopts a layered modular structure, with a rigid support system consisting of a base 1, support frame 2, and support ring 3. The maintenance box 4 and reaction box 9 are thermally coupled via a heating ring 8. The internal honeycomb reactor 12 serves as the core area for the denitrification reaction. Its core innovation lies in utilizing high-speed flue gas from the outlet pipe 7 to drive the impeller 518 to rotate. The kinetic energy is transmitted to the gear set and reciprocating screw 18 via a synchronous pulley 502-synchronous belt 503 transmission system, causing the L-shaped plate 19 and its bottom hollow honeycomb tube 20 to perform axial scraping motion within the honeycomb reactor 12, effectively removing accumulated dust within a 20cm spacing range on the catalyst surface. Simultaneously, the cylindrical cam 511 is driven to rotate via a bevel gear set, causing the mating rod 512 to move along a closed-loop trajectory of the return groove 515. This pushes a high-temperature resistant silicone rubber ball with hemispherical protrusions to periodically impact the chamber. The resulting mechanical vibration can be transmitted to the deep layers of the catalyst, combined with self-lubrication. The graphite-lined limiting frame 514 ensures the long-term operation of the vibration mechanism. This device achieves three-level utilization of flue gas flow energy, rotational mechanical energy, and vibration impact energy through a pneumatic-mechanical energy conversion mechanism. The three-stage design of the return channel 515—inclined rise, horizontal maintenance, and inclined descent—makes the vibration frequency adjustable. The wear-resistant ceramic-coated mating rod 512 and clearance fit structure reduce transmission losses. The overall design combines functionality and ease of maintenance: the modular flange structure of the support ring 3 facilitates disassembly and maintenance; the heating ring 8 maintains the reaction temperature and optimizes denitrification efficiency; the annular distribution of the four sets of support frames 2 ensures operational stability; and the synergistic effect of the hollow honeycomb tube 20 and the limiting plate 15 forms a three-dimensional dust removal network. This integrated design not only solves the problem of easy catalyst clogging in traditional SNCR systems but also reduces auxiliary energy consumption through energy recovery and utilization. Its dual cleaning mechanism of vibration dust removal and mechanical scraping can extend the service life of the catalyst, making it particularly suitable for denitrification applications under high-dust flue gas conditions. It reflects the development trend of intelligent and efficient environmental protection equipment.

[0023] 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 variations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A solid catalyst modular reaction device for SNCR denitration, characterized in that: Including support ring (3), the inner ring of support ring (3) is fixedly connected with maintenance box (4), the bottom of maintenance box (4) is fixedly connected with heating ring (8), the inner ring of heating ring (8) is fixedly connected with reaction box (9), reaction box (9) is located at the bottom of maintenance box (4), the inner wall of reaction box (9) is fixedly connected with honeycomb reactor (12), the top of maintenance box (4) is fixedly connected with box cover (6), the bottom of box cover (6) is equipped with matching parts (5). The matching parts (5) include a U-shaped frame (501), the top of the U-shaped frame (501) is fixedly connected with the bottom of the box cover (6), the inner wall of the box cover (6) is fixedly connected with an air outlet pipe (7), the inner wall of the U-shaped frame (501) is rotatably connected with a third rotating rod (517), the top of the third rotating rod (517) is fixedly connected with an impeller (518), and the impeller (518) is located in the pipe of the air outlet pipe (7).

2. The solid catalyst modular reaction device for SNCR denitration according to claim 1, characterized in that: The bottom of the box cover (6) is rotatably connected with a first rotating rod (504), the bottom of the box cover (6) is rotatably connected with a second rotating rod (506), the bottom of the box cover (6) is fixedly connected with a first support plate (516), the bottom of the first rotating rod (504) is fixedly connected with a first gear (505), the bottom of the first gear (505) is fixedly connected with a reciprocating screw rod (18), both sides of the inside of the maintenance box (4) are fixedly connected with a fixed block (13), the inner side of the fixed block (13) is fixedly connected with a connecting box (14), the bottom of the inner wall of the connecting box (14) is fixedly connected with a limiting plate (15), the honeycomb reactor (12) is located at the bottom of the limiting plate (15), the spacing between the limiting plate (15) and the honeycomb reactor (12) is 20 cm, and the bottom of the third rotating rod (517) and the surface of the first rotating rod (504) are fixedly connected with a synchronous wheel (502).

3. The solid catalyst modular reactor for SNCR denitration according to claim 2, characterized in that: The surface of the reciprocating screw rod (18) is threadedly connected with an L-shaped plate (19), the bottom of the L-shaped plate (19) is fixedly connected with a second support plate (16), the top of the fixed block (13) is fixedly connected with a third support plate (17), the bottom of the reciprocating screw rod (18) is rotatably connected with the top of the third support plate (17), the bottom of the second support plate (16) is fixedly connected with a hollow honeycomb tube (20), the surface of the hollow honeycomb tube (20) is slidably connected with the inner wall of the honeycomb reactor (12), and the surface of the second support plate (16) is slidably connected with the inner wall of the connecting box (14).

4. The solid catalyst modular reactor for SNCR denitration according to claim 1, characterized in that: The bottom of the reaction box (9) is fixedly connected with a bottom cover (10), the inner wall of the bottom cover (10) is fixedly connected with an air inlet pipe (11), the bottom of the support ring (3) is fixedly connected with a support frame (2), the bottom of the support frame (2) is fixedly connected with a base (1), the number of the support frame (2) is four, and the four support frames (2) are arranged in an annular array.

5. The solid catalyst modular reactor for SNCR denitration according to claim 2, characterized in that: The surfaces of the two synchronous wheels (502) are sleeved with a synchronous belt (503), the surface of the second rotating rod (506) is fixedly connected with a second gear (507), and the second gear (507) is engaged with the first gear (505).

6. The solid catalyst modular reactor for SNCR denitration according to claim 2, characterized in that: The bottom of the second rotating rod (506) is fixedly connected with a first bevel gear (508), the inner wall of the first supporting plate (516) is rotatably connected with a fourth rotating rod (509), the left end of the fourth rotating rod (509) is fixedly connected with a second bevel gear (510), and the first bevel gear (508) is engaged with the second bevel gear (510).

7. The solid catalyst modular reactor for SNCR denitration according to claim 6, characterized in that: The right end of the fourth rotating rod (509) is fixedly connected with a cylindrical cam (511), the front surface of the first supporting plate (516) is fixedly connected with a limiting frame (514), the frame wall of the limiting frame (514) is slidably connected with a reciprocating plate (513), the back surface of the reciprocating plate (513) is fixedly connected with a matching rod (512), the surface of the cylindrical cam (511) is provided with a first-end-to-last connected turning-back groove (515), the surface of the matching rod (512) is slidably connected with the groove wall of the turning-back groove (515), and the right end of the reciprocating plate (513) is fixedly connected with a rubber ball.

8. The solid catalyst modular reactor for SNCR denitration according to claim 7, characterized in that: The turning-back groove (515) of the cylindrical cam (511) comprises an inclined rising section, a horizontal maintaining section and an inclined descending section, the turning-back groove (515) of the cylindrical cam (511) forms a continuous closed-loop track, the end of the matching rod (512) is provided with a wear-resistant ceramic coating, the matching rod (512) is gap-fitted with the turning-back groove (515), the rubber ball of the reciprocating plate (513) is made of high-temperature-resistant silica gel material, the rubber ball surface of the reciprocating plate (513) is uniformly distributed with hemispherical protrusions, the inner side of the limiting frame (514) is provided with a self-lubricating graphite lining, and the self-lubricating graphite lining provided on the inner side of the limiting frame (514) is in sliding contact with the reciprocating plate (513).

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