SCR reactor for denitration of thermal power plant

Abstract

The present application relates to the technical field of gas treatment, and specifically discloses a SCR reactor for denitration of a thermal power plant, which comprises a plurality of reaction assemblies distributed along a horizontal direction, a connecting pipe, and a cleaning device arranged below the reaction assemblies; the reaction assembly comprises a shell with an open lower end, a reaction plate with a porous structure horizontally arranged in the shell, a first partition plate, a second partition plate arranged above the reaction plate, a third partition plate arranged above the reaction plate, and an air inlet and an air outlet respectively arranged on opposite sides of the shell; a gap is arranged between the second partition plate and the reaction plate, the second partition plate is fixedly connected with the reaction plate, and the height of the reaction plate is located between the air inlet and the air outlet; when the second partition plate and the third partition plate are located at the same height, the second partition plate and the third partition plate can close the shell. The SCR reactor for denitration of the thermal power plant can efficiently clean the reaction assembly without stopping the operation.

Description

Technical Field

[0001] This invention relates to the technical field of gas processing devices, and more specifically, to an SCR reactor for denitrification in thermal power plants. Background Technology

[0002] Selective catalytic reduction (SCR) reactors are core equipment for denitrification in thermal power plants. They work by reacting ammonia with nitrogen oxides in flue gas through a redox reaction under the action of a catalyst, converting them into harmless nitrogen and water. Essentially, it is a device used to separate and remove harmful gases from flue gas through a reaction.

[0003] However, SCR reactors only remove nitrogen oxides, while the high-temperature flue gas from thermal power plants contains a large amount of dust. The reactor cannot remove dust particles; on the contrary, the dust particles will adhere to the catalyst surface of the reactor, hindering the reaction. Therefore, the reactor usually needs to be cleaned regularly. Simple cleaning mainly uses steam blowing or sonic blowing. The problems with this method are: (1) the flue gas flow rate needs to be reduced or the reactor needs to be shut down during cleaning; (2) the dust content in the flue gas of thermal power plants is very high, and the reactor is easily blocked. Frequent shutdowns for cleaning greatly affect production efficiency; (3) the cleaning is not thorough. Blowing cannot remove the firmly adhered dust, and it is difficult to clean it after a long period of operation. Therefore, it is necessary to design a reactor that can clean the reactor efficiently without affecting the flow of flue gas. Summary of the Invention

[0004] The purpose of this invention is to provide an SCR reactor for denitrification in thermal power plants, which can efficiently perform cleaning operations on the reaction components without shutting down the plant.

[0005] This invention is achieved through the following technical solution: The SCR reactor for denitrification in thermal power plants of this invention includes multiple reaction components distributed horizontally, connecting pipes for connecting adjacent reaction components, supports for supporting the reaction components, and a cleaning device disposed below the reaction components; each reaction component includes a shell with an open lower end, a porous reaction plate horizontally disposed within the shell, a first partition plate disposed below and fixedly connected to the reaction plate, a second partition plate disposed above the reaction plate, a first driving device for driving the second partition plate to rise and fall, a third partition plate disposed above the reaction plate, a second driving device for driving the third partition plate to rise and fall, and air inlets and exhaust ports respectively disposed on opposite sides of the shell; a gap is provided between the second partition plate and the reaction plate, the second partition plate is fixedly connected to the reaction plate, and the height of the reaction plate is between the air inlets and the exhaust ports; when the second partition plate and the third partition plate are at the same height, the second partition plate and the third partition plate can close the shell.

[0006] Furthermore, the reaction plate sidewall, the first partition sidewall, the second partition sidewall, and the third partition sidewall are all slidably connected to the inner wall of the housing.

[0007] Furthermore, the second partition has an inverted U-shaped structure, and the lower ends of the second partition are fixedly connected to the two sides of the reaction plate; the side of the second partition near the air inlet is slidably connected to the inner wall of the housing, and there is a gap between the side of the second partition near the exhaust port and the inner wall of the housing.

[0008] Furthermore, the first driving device includes a first telescopic cylinder vertically disposed above the housing; the cylinder body of the first telescopic cylinder is fixedly connected to the upper outer wall of the housing, and the movable end of the first telescopic cylinder passes through the housing and is fixedly connected to the second partition.

[0009] Furthermore, the third partition is slidably connected to the inner wall of the housing near the exhaust port; the second driving device includes a second telescopic cylinder vertically disposed above the housing; the cylinder body of the second telescopic cylinder is fixedly connected to the outer wall of the housing, and the movable end of the second telescopic cylinder passes through the housing and is fixedly connected to the third partition.

[0010] Furthermore, the height of the second partition is higher than the height of the third partition, and the third partition is located above the exhaust port; it also includes an ammonia injection device disposed on the side of the housing near the exhaust port; the ammonia injection device includes a plurality of nozzles disposed through the side wall of the housing, and an ammonia source connected to the plurality of nozzles simultaneously; the nozzles are disposed directly above the third partition, and the height of the nozzles is between the second partition and the third partition.

[0011] Furthermore, the first partition is an L-shaped structure, and its upper end is fixedly connected to the reaction plate; the cleaning device includes an L-shaped base plate, a water receiving trough on the base plate, a hollow water plate above the water receiving trough, a water supply pipe connected to the water plate, a pump body connected to the water supply pipe, a plurality of spray pipes vertically arranged on the upper side of the water plate, and spray holes opened on the upper side wall of the spray pipes; the spray pipes correspond one-to-one with the holes on the reaction plate; when the first partition moves to the lowest position, the first partition can be locked between the base plate and the water receiving trough.

[0012] Furthermore, the cleaning device also includes a third driving device for driving the water plate to rise and fall, and a plurality of telescopic rods for connecting the water plate and the water receiving trough; the third driving device includes a third telescopic cylinder disposed between the water plate and the water receiving trough; the cylinder body of the third telescopic cylinder is hinged to the water receiving trough, and the movable end of the third telescopic cylinder is hinged to the lower side of the water plate.

[0013] Furthermore, the cleaning device also includes a guide rail horizontally disposed below the reaction components, and a drive wheel disposed on the underside of the base plate; the drive wheel is disposed in the guide rail; the length direction of the guide rail is parallel to the arrangement direction of the plurality of reaction components.

[0014] Furthermore, a gas detector is connected to the side wall of the connecting pipe.

[0015] The technical solution of the present invention has at least the following advantages and beneficial effects: In the SCR reactor for denitrification in thermal power plants of the present invention, high-temperature flue gas is sent into the reaction assembly at the starting end during use. Nitrogen oxides in the flue gas pass through the reaction plate in the reaction assembly and are catalyzed into nitrogen by the catalyst on the reaction plate under the action of ammonia. The nitrogen oxides pass through multiple reaction assemblies in sequence. After the nitrogen oxides are fully reduced to nitrogen, they are discharged. During this process, nitrogen oxides in the flue gas will quickly accumulate in the pore walls of the reaction plate. Therefore, it is necessary to use a cleaning device to clean the reaction plate of each reaction assembly regularly. When the reaction plate in a reaction assembly needs cleaning, the first driving device drives the first partition, the reaction plate, and the second partition to move downwards as a whole. During this downward movement, the first partition first seals the lower end of the entire housing. Once the second partition moves below the air inlet, the second driving device drives the third partition to the same height as the second partition, sealing the lower side of the housing with both partitions. Then, the second and third partitions continue to move downwards until the first partition is completely below the housing, exposing the reaction plate. At this point, the cleaning device can be used to access the area below the reaction plate and perform a rinsing operation. Throughout this process, normal airflow is ensured without affecting the normal operation of the gas reaction assembly, and shutdown is not required. The reaction plate is cleaned efficiently and thoroughly, maintaining high reaction efficiency. Furthermore, the cleaning operation can be performed in situ without the need for device relocation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an SCR reactor for denitrification in a thermal power plant, provided in an embodiment of the present invention.

[0017] Figure 2 for Figure 1 A partial sectional view along the vertical direction;

[0018] Figure 3 This is a schematic diagram of the two states of an SCR reactor for denitrification in a thermal power plant, provided in an embodiment of the present invention.

[0019] Figure 4 for Figure 2 A partial sectional view along the vertical direction;

[0020] Figure 5 A schematic diagram of the three states of an SCR reactor for denitrification in a thermal power plant, provided in an embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the structure of the reaction component provided in an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the structure of the reaction plate portion provided in an embodiment of the present invention;

[0023] Figure 8 This is a schematic diagram of the structure of the cleaning device provided in an embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram of the water receiving tank provided in an embodiment of the present invention.

[0025] Icons: 10-Reaction component, 11-Shell, 12-Reaction plate, 13-First partition, 14-Second partition, 15-First drive device, 151-First telescopic cylinder, 16-Third partition, 17-Second drive device, 171-Second telescopic cylinder, 18-Air inlet, 19-Exhaust outlet, 110-Gas detector, 20-Connecting pipe, 30-Cleaning device, 31-Base plate, 32-Water tank, 33-Water plate, 34-Water supply pipe, 35-Water spray pipe, 36-Water spray hole, 37-Third drive device, 371-Third telescopic cylinder, 38-Telescopic rod, 39-Drive wheel, 310-Guide rail. Detailed Implementation

[0026] Example

[0027] The following description, in conjunction with specific embodiments, further illustrates the point, as shown in the appendix. Figure 1 -Appendix Figure 9As shown (arrows in the figure indicate airflow direction), the SCR reactor for denitrification in a thermal power plant includes multiple horizontally distributed reaction components 10, connecting pipes 20 for connecting adjacent reaction components 10, supports for supporting the reaction components 10, and a cleaning device 30 located below the reaction components 10. Each reaction component 10 includes a shell 11 with an open lower end, a porous reaction plate 12 horizontally disposed within the shell 11, a first partition 13 located below and fixedly connected to the reaction plate 12, and a second partition 14 located above the reaction plate 12 for driving... The system includes a first drive device 15 for raising and lowering the second partition 14, a third partition 16 located above the reaction plate 12, a second drive device 17 for raising and lowering the third partition 16, and an air inlet 18 and an exhaust outlet 19 located on opposite sides of the housing 11. A gap is provided between the second partition 14 and the reaction plate 12, and the second partition 14 is fixedly connected to the reaction plate 12. The height of the reaction plate 12 is located between the air inlet 18 and the exhaust outlet 19. When the second partition 14 and the third partition 16 are at the same height, the second partition 14 and the third partition 16 can close the housing 11. Specifically, during use, high-temperature flue gas is sent into the reaction assembly 10 at the starting end. Nitrogen oxides in the flue gas pass through the reaction plate 12 in the reaction assembly 10 and are catalyzed into nitrogen by the catalyst on the reaction plate 12 under the action of ammonia. The nitrogen oxides pass through multiple reaction assemblies 10 in sequence. After the nitrogen oxides are fully reduced to nitrogen, they are discharged. During this process, nitrogen oxides in the flue gas will quickly accumulate in the hole wall of the reaction plate 12. Therefore, it is necessary to use the cleaning device 30 to clean the reaction plate 12 of each reaction assembly 10 regularly. When the reaction plate 12 in a reaction assembly 10 needs to be cleaned, the first drive device 15 drives the first partition 13, the reaction plate 12, and the second partition 14 to move downward as a whole. During the downward movement, the first partition 13 first seals the lower end of the entire housing 11 until the second partition 14 moves to the lower side of the air inlet 18. Then, the second drive device 17 drives the third partition 16 to move to the same height as the second partition 14. The second partition 14 and the third partition 16 seal the lower side of the housing 11. Then, the second partition 14 and the third partition 16 continue to move downward, so that the first partition 13 is completely below the housing 11, exposing the reaction plate 12. At this time, the cleaning device 30 can be used to enter below the reaction plate 12 to perform a rinsing operation on the reaction plate 12. Throughout the process, not only is normal airflow ensured, but the normal operation of the gas reaction assembly 10 is also unaffected, requiring no shutdown. Furthermore, the reaction plate 12 is cleaned efficiently and thoroughly, maintaining its high reaction efficiency. The cleaning operation can be performed directly in situ, without requiring device relocation. It is important to note that the thickness of the reaction plate 12 is significantly less than the vertical width of the air inlet 18 and the exhaust port 19, preventing blockage of the air inlet 18 when the reaction plate 12 passes through it.

[0028] In this embodiment, the sidewalls of the reaction plate 12, the first partition 13, the second partition 14, and the third partition 16 are all slidably connected to the inner wall of the housing 11. Specifically, the airflow in the housing 11 will naturally flow from the air inlet 18 to the exhaust outlet 19, and the first partition 13, the second partition 14, and the reaction plate 12 only serve as auxiliary sealing.

[0029] In this embodiment, the second partition 14 has an inverted U-shaped structure. The lower two sides of the second partition 14 are fixedly connected to the two sides of the reaction plate 12. The side of the second partition 14 near the air inlet 18 is slidably connected to the inner wall of the housing 11, and there is a gap between the side of the second partition 14 near the exhaust port 19 and the inner wall of the housing 11. Specifically, the inverted U-shaped structure of the second partition 14 allows it to be connected to the reaction plate 12, enabling it to rise and fall synchronously with the reaction plate 12, while also creating a gap between the reaction plate 12 and the second partition 14, allowing airflow to enter the exhaust port 19 through this gap. The connecting pipe 20 is used to connect the exhaust port 19 and the air inlet 18 of two adjacent housings 11.

[0030] In this embodiment, the first driving device 15 includes a first telescopic cylinder 151 vertically disposed above the housing 11. The cylinder body of the first telescopic cylinder 151 is fixedly connected to the upper outer wall of the housing 11, and the movable end of the first telescopic cylinder 151 passes through the housing 11 and is fixedly connected to the second partition 14. Specifically, the first telescopic cylinder 151 can be a pneumatic cylinder, a hydraulic cylinder, or an electric push rod, etc., preferably a pneumatic cylinder. It is only necessary to set the upper and lower limits of the first telescopic cylinder 151.

[0031] In this embodiment, the third partition 16 is slidably connected to the inner wall of the housing 11 near the exhaust port 19; the second drive device 17 includes a second telescopic cylinder 171 vertically disposed above the housing 11; the cylinder body of the second telescopic cylinder 171 is fixedly connected to the outer wall of the housing 11, and the movable end of the second telescopic cylinder 171 passes through the housing 11 and is fixedly connected to the third partition 16. Specifically, the second partition 14 and the third partition 16 will only fit together to seal the lower end of the housing 11 when both are at their lowest positions. In other positions, there is a certain gap between the second partition 14 and the third partition 16, which allows airflow to pass through the housing 11 normally. The second telescopic cylinder 171 can be a pneumatic cylinder, a hydraulic cylinder, or an electric push rod, etc., preferably a pneumatic cylinder. Only an upper limit and a lower limit of the second telescopic cylinder 171 need to be set.

[0032] In this embodiment, the height of the second partition 14 is higher than the height of the third partition 16, and the third partition 16 is located above the exhaust port 19. It also includes an ammonia injection device disposed on the side of the housing 11 near the exhaust port 19. The ammonia injection device includes multiple nozzles disposed through the side wall of the housing 11, and an ammonia source connected to the multiple nozzles simultaneously. The nozzles are located directly above the third partition 16, and their height is between the second partition 14 and the third partition 16. Specifically, the reduction of nitrogen oxides requires the introduction of ammonia gas. Therefore, ammonia gas can be injected through the nozzles into the gap between the second partition 14 and the third partition 16 via the ammonia source. It will naturally enter the housing 11 and mix with the flue gas, and then enter the connecting pipe 20 through the exhaust port 19. Mixing continues in the connecting pipe 20, and finally, it enters the reaction plate 12 in the subsequent housing 11. This method of mixing the gas before sending it to the reaction plate 12 effectively improves the reaction efficiency. Furthermore, the nozzle is positioned above the third partition 16. After the ammonia gas is injected into the housing 11, it undergoes turbulent mixing with the flue gas inside the housing 11 (below the second partition 14) under the action of the airflow, and will not flow back through the reaction plate 12.

[0033] In this embodiment, the first partition 13 has an L-shaped structure, and the upper end of the first partition 13 is fixedly connected to the reaction plate 12. The cleaning device 30 includes an L-shaped base plate 31, a water receiving tank 32 on the base plate 31, a hollow water plate 33 above the water receiving tank 32, a water supply pipe 34 connected to the water plate 33, a pump body connected to the water supply pipe 34, a plurality of vertically arranged water spray pipes 35 on the upper side of the water plate 33, and water spray holes 36 opened on the upper side wall of the water spray pipes 35. The water spray pipes 35 correspond one-to-one with the holes on the reaction plate 12. When the first partition 13 moves to the bottom, the first partition 13 can be locked between the base plate 31 and the water receiving tank 32. Specifically, the L-shaped first partition 13 ensures that it is integrally connected with the reaction plate 12, seals the lower end of the housing 11, and provides sufficient clearance between the partition 13 and the reaction plate 12. This allows the water tank 32 and water plate 33 to move above the partition 13 to clean the reaction plate 12. The bottom plate 31 is positioned below the partition 13. During cleaning, the second partition 14 and third partition 16 act as a barrier to prevent water flow, allowing the cleaning solution to flow into the water tank 32 and be discharged through relevant pipes. This requires the first partition 13 to move to the bottom first, followed by the cleaning device 30 moving directly below the housing 11 (as shown in the attached diagram). Figure 1 -Appendix Figure 3 As shown), after cleaning is completed, the cleaning device 30 is removed first, and then the first partition 13 moves upward.

[0034] The cleaning device 30 in this embodiment also includes a third driving device 37 for driving the water plate 33 to rise and fall, and a plurality of telescopic rods 38 for connecting the water plate 33 and the water receiving tank 32; the third driving device 37 includes a third telescopic cylinder 371 disposed between the water plate 33 and the water receiving tank 32; the cylinder body of the third telescopic cylinder 371 is hinged to the water receiving tank 32, and the movable end of the third telescopic cylinder 371 is hinged to the lower side of the water plate 33. Specifically, the third telescopic cylinder 371 can drive the water plate 33 and the water spray pipe 35 to move up and down, so that the water spray pipe 35 can penetrate into the hole of the reaction plate 12 to rinse the inner wall of the hole (as shown in the attached figure). Figure 4 -Appendix Figure 5 As shown in the figure, bristles can also be installed on the outer wall of the water spray pipe 35 to improve the cleaning effect.

[0035] The cleaning device 30 in this embodiment also includes a guide rail 310 horizontally disposed below the reaction assembly 10, and a drive wheel 39 disposed on the underside of the base plate 31; the drive wheel 39 is disposed in the guide rail 310; the length direction of the guide rail 310 is parallel to the arrangement direction of the plurality of reaction assemblies 10. Specifically, the guide rail 310 allows the base plate 31 to move stably back and forth on the guide rail 310 under the drive of the drive wheel 39. The movement can be manually operated, or a relevant program can be pre-set to enable fully automated operation.

[0036] In this embodiment, a gas detector 110 is connected to the side wall of the connecting pipe 20. Specifically, the gas detector 110 can detect the content of nitrogen oxides in the connecting pipe 20, and the amount of ammonia injected into the subsequent ammonia injection device can be precisely and in real time controlled based on the content to achieve the best reaction efficiency.

[0037] In summary, the SCR reactor for denitrification in thermal power plants of this embodiment sends high-temperature flue gas into the reaction assembly 10 at the starting end during use. Nitrogen oxides in the flue gas pass through the reaction plate 12 in the reaction assembly 10 and are catalyzed into nitrogen by the catalyst on the reaction plate 12 under the action of ammonia. The nitrogen oxides pass through multiple reaction assemblies 10 in sequence and are discharged after being fully reduced to nitrogen. During this process, nitrogen oxides in the flue gas will quickly accumulate in the pore walls of the reaction plate 12. Therefore, it is necessary to use the cleaning device 30 to clean the reaction plate 12 of each reaction assembly 10 regularly. When the reaction plate 12 in a reaction assembly 10 needs to be cleaned, the first drive device 15 drives the first partition 13, the reaction plate 12 and the second partition 14 to move downward as a whole. During the downward movement, the first partition 13 first seals the lower end of the entire housing 11 until the second partition 14 moves to the lower side of the air inlet 18. Then, the second drive device 17 drives the third partition 16 to move to the same height as the second partition 14. The second partition 14 and the second partition 16 seal the lower side of the housing 11. Then, the second partition 14 and the third partition 16 continue to move downward, so that the first partition 13 is completely below the housing 11, exposing the reaction plate 12. At this time, the cleaning device 30 can be used to enter under the reaction plate 12 to perform a rinsing operation on the reaction plate 12. Throughout the process, not only can the normal flow of air be guaranteed, but the normal operation of the gas reaction component 10 will not be affected, and there is no need to shut down the machine. It can also efficiently and thoroughly clean the reaction plate 12, so that it always maintains a high reaction efficiency. Moreover, the cleaning operation can be carried out directly in situ without the need to transfer the device.

[0038] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An SCR reactor for denitrification in thermal power plants, characterized in that: It includes multiple reaction components distributed in a horizontal direction, connecting pipes for connecting adjacent reaction components, supports for supporting the reaction components, and a cleaning device located below the reaction components. The reaction assembly includes a housing with an opening at the lower end, a porous reaction plate horizontally disposed within the housing, a first partition plate disposed below and fixedly connected to the reaction plate, a second partition plate disposed above the reaction plate, a first driving device for driving the second partition plate to rise and fall, a third partition plate disposed above the reaction plate, a second driving device for driving the third partition plate to rise and fall, and an air inlet and an exhaust outlet respectively disposed on opposite sides of the housing. A gap is provided between the second partition and the reaction plate, the second partition is fixedly connected to the reaction plate, and the height of the reaction plate is located between the air inlet and the exhaust outlet; When the second partition and the third partition are at the same height, the second partition and the third partition close the housing; The second partition has an inverted U-shaped structure, and the two sides of the lower end of the second partition are fixedly connected to the two sides of the reaction plate; the side of the second partition near the air inlet is slidably connected to the inner wall of the shell, and there is a gap between the side of the second partition near the exhaust port and the inner wall of the shell; The second partition is higher than the third partition, and the third partition is located above the exhaust port; It also includes an ammonia injection device located on the side of the housing near the exhaust port; the ammonia injection device includes a plurality of nozzles disposed through the side wall of the housing, and an ammonia source connected to the plurality of nozzles simultaneously; The nozzle is located directly above the third partition, and the height of the nozzle is between the second partition and the third partition; When the reaction plate in a reaction assembly needs to be cleaned, the first driving device drives the first partition, the reaction plate, and the second partition to move downwards as a whole. During the downward movement, the first partition first seals the lower end of the entire housing until the second partition moves to the lower side of the air inlet. Then, the second driving device drives the third partition to move to the same height as the second partition, sealing the lower side of the housing through the second and third partitions. Then, the second and third partitions continue to move downwards until the first partition is completely below the housing, exposing the reaction plate. At this point, the cleaning device enters below the reaction plate to perform a rinsing operation.

2. The SCR reactor for denitrification in thermal power plants according to claim 1, characterized in that: The sidewalls of the reaction plate, the first partition, the second partition, and the third partition are all in a sealed sliding connection with the inner wall of the housing.

3. The SCR reactor for denitrification in thermal power plants according to claim 1, characterized in that: The first driving device includes a first telescopic cylinder vertically disposed above the housing; the cylinder body of the first telescopic cylinder is fixedly connected to the upper outer wall of the housing, and the movable end of the first telescopic cylinder passes through the housing and is fixedly connected to the second partition.

4. The SCR reactor for denitrification in thermal power plants according to claim 1, characterized in that: The third partition is in a sealed sliding connection with the inner wall of the housing near the exhaust port; The second driving device includes a second telescopic cylinder vertically disposed above the housing; the cylinder body of the second telescopic cylinder is fixedly connected to the outer wall of the housing, and the movable end of the second telescopic cylinder passes through the housing and is fixedly connected to the third partition.

5. The SCR reactor for denitrification in thermal power plants according to claim 1, characterized in that: The first partition has an L-shaped structure, and the upper end of the first partition is fixedly connected to the reaction plate; The cleaning device includes an L-shaped base plate, a water receiving trough on the base plate, a hollow water plate above the water receiving trough, a water supply pipe connected to the water plate, a pump body connected to the water supply pipe, multiple spray pipes vertically arranged on the upper side of the water plate, and spray holes opened on the upper side wall of the spray pipes; the spray pipes correspond one-to-one with the holes on the reaction plate. When the first partition moves to the bottommost position, the first partition can be locked between the bottom plate and the water receiving tank.

6. The SCR reactor for denitrification in thermal power plants according to claim 5, characterized in that: The cleaning device also includes a third drive device for driving the water plate to rise and fall, and a plurality of telescopic rods for connecting the water plate and the water receiving tank. The third driving device includes a third telescopic cylinder disposed between the water plate and the water receiving trough; the cylinder body of the third telescopic cylinder is hinged to the water receiving trough, and the movable end of the third telescopic cylinder is hinged to the lower side of the water plate.

7. The SCR reactor for denitrification in thermal power plants according to claim 5, characterized in that: The cleaning device further includes a guide rail horizontally disposed below the reaction assembly, and a drive wheel disposed on the underside of the base plate; the drive wheel is disposed in the guide rail; The length of the guide rail is parallel to the arrangement direction of the plurality of reaction components.

8. The SCR reactor for denitrification in thermal power plants according to claim 1, characterized in that: A gas detector is connected to the side wall of the connecting pipe.

Images