Waste gas treatment device of thermal power plant

Abstract

The invention relates to the technical field of waste gas treatment, and discloses a waste gas treatment device of a thermal power plant, the waste gas treatment device comprises a gas inlet pipe, an exhaust pipe and a catalyst bin, the middle part of the inner surface of the gas inlet pipe is provided with an anti-blocking device, and the upper part of the outer arc surface of the gas inlet pipe is fixedly connected with a gas concentration sensor; a flow sensor is fixedly connected to the upper part of the outer cambered surface of the gas inlet pipe, an impurity recovery device is arranged at the lower part of the outer cambered surface of the gas inlet pipe, a catalyst feeding device is arranged in the catalyst bin, and a reaction bin is fixedly connected to the upper part of the catalyst bin. Through the arrangement of the supporting rod, the bearing, the rotating shaft, the impeller, the electrode plate and the brush rod, automatic cleaning of the surface of the electrode plate can be achieved without external energy source driving, the service life of the electrode plate is effectively prolonged, continuity and high efficiency of electrostatic dust collection are guaranteed, meanwhile, the maintenance cost of equipment is reduced through the design, and the practicability is high. And the economical efficiency of the whole operation is improved.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, in particular to a waste gas treatment device for a thermal power plant. Background Art

[0002] Thermal power plants mainly convert chemical energy into thermal energy by burning fossil fuels such as coal, oil, and natural gas. The fuel burns in the boiler to produce high-temperature and high-pressure steam. The steam drives the turbine to rotate, converting thermal energy into mechanical energy. The turbine drives the generator to rotate, thereby converting mechanical energy into electrical energy.

[0003] In the prior art, people often use the electrode plates inside the exhaust gas treatment device to filter the harmful substances and smoke generated in the exhaust gas during thermal power generation, so as to ensure that the exhaust gas finally discharged can meet the emission standards.

[0004] However, in actual use, since the exhaust gas discharged during the thermal power generation process will contain more particulate impurities, during the process of electrostatic dust removal using electrode plates, the particulate impurities inside will stick to the surface of the electrode plates during the airflow push process, and as the number of particulate impurities increases, the potential difference and electric field strength between the electrode plates are affected, and the flow of airflow is hindered, thereby reducing the efficiency of exhaust gas treatment. In view of this, we propose an exhaust gas treatment device for a thermal power plant. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a waste gas treatment device for a thermal power plant, which solves the problem that the filtering effect of the prior art using electrode plates to filter the waste gas in the power generation process of the thermal power plant will be affected by particulate impurities in the airflow.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an exhaust gas treatment device for a thermal power plant, comprising an intake pipe, an exhaust pipe, and a catalyst bin, wherein an anti-blocking device is provided at the middle of the inner surface of the intake pipe, a gas concentration sensor is fixedly connected to the upper portion of the outer arc surface of the intake pipe, a flow sensor is fixedly connected to the upper portion of the outer arc surface of the intake pipe, an impurity recovery device is provided at the lower portion of the outer arc surface of the intake pipe, a catalyst feeding device is provided inside the catalyst bin, a reaction bin is fixedly connected to the upper portion of the catalyst bin, and the exhaust pipe is fixedly connected to the upper portion of the reaction bin;

[0007] The anti-clogging device includes a support rod, the end of the support rod is fixedly connected to a bearing, the inner arc surface of the bearing is fixedly connected to a rotating shaft, the lower part of the outer arc surface of the rotating shaft is fixedly connected to an impeller, the lower end of the outer arc surface of the rotating shaft is fixedly connected to a brush rod, and the lower part of the outer arc surface of the rotating shaft is rotatably connected to an electrode plate.

[0008] Preferably, the catalyst feeding device includes a water pump, a transfer pipe is fixedly connected to the water outlet of the water pump, a ring block is rotatably connected to the lower part of the transfer pipe, a connecting rod is fixedly connected to the outer arc surface of the ring block, a stirring rod is fixedly connected to the end of the connecting rod away from the ring block, an arc plate is provided on the inner arc surface of the ring block, and a spoiler is fixedly connected to the middle of the outer arc surface of the rotating shaft.

[0009] Preferably, the impurity recovery device includes an arc-shaped shaft, a sealing plate is fixedly connected to the outer arc surface of the arc-shaped shaft, a limiting block is fixedly connected to the lower part of the intake pipe, a threaded block is threadedly connected to the lower part of the intake pipe, a sealing ring is fixedly connected to the inside of the threaded block, and a contact block is fixedly connected to the middle of the inner surface of the threaded block.

[0010] Preferably, the intake pipe is configured as an S-shape as a whole, a through hole is provided at the bend of the lower end of the intake pipe, and a circular protrusion is provided below the through hole, a threaded groove is provided on the outer arc surface of the protrusion at the lower end of the intake pipe, a through hole is provided in the middle part of the intake pipe, a through hole is provided in the upper part of the outer arc surface of the intake pipe, a through hole is provided on the outer arc surface of the reaction chamber, a through hole is provided on the outer arc surface of the catalyst chamber, the detection probe of the flow sensor passes through and is fixedly connected to the intake pipe, and the detection probe of the gas concentration sensor passes through and is fixedly connected to the intake pipe.

[0011] Preferably, one end of the support rod away from the bearing is fixedly connected to the intake pipe, and the support rods are provided in multiple groups, and the multiple groups of support rods are distributed in a circular array with the center of the bearing as the array center, and the inclination angle of the rotating shaft is the same as the inclination angle of the middle part of the intake pipe.

[0012] Preferably, a plurality of groups of inclined arc blades are arranged on the outer arc surface of the impeller, the outer surface of the brush rod is in contact with the electrode plate, a plurality of groups of bristles are arranged on one end of the brush rod close to the electrode plate, and the outer arc surface of the electrode plate is fixedly connected to the air intake pipe.

[0013] Preferably, the bottom surface of the water pump is fixedly connected to the catalyst bin, the water inlet of the water pump is located at the lower outer side thereof, the end of the transfer pipe away from the water pump is fixedly connected to the air intake pipe, a circular notch is provided at the lower part of the transfer pipe, and the connection between the ring block and the transfer pipe is kept sealed.

[0014] Preferably, the stirring rod is arranged as a whole in an inclined shape, the arc plates are provided in multiple groups, and the multiple groups of arc plates are distributed in a circular array with the center of the ring block as the array center, and a feed port is opened on the upper part of the outer arc surface of the catalyst bin.

[0015] Preferably, the outer surface of the arc shaft is rotatably connected to the intake pipe, and the connection between the arc shaft and the intake pipe is kept sealed. The sealing plates and the arc shaft are provided in multiple groups, and the multiple groups of sealing plates and the arc shaft are distributed in an array around the center of the circular through hole at the lower end of the intake pipe. The upper part of the limit block is rotatably connected to the arc shaft and the connection is kept sealed. The upper part of the limit block is provided with a groove with the same curvature as the outer arc surface of the arc shaft, and the upper surface of the limit block is in contact with the sealing plate.

[0016] Preferably, a cylindrical groove is provided inside the threaded block, the upper surface of the sealing ring is in close contact with the air intake pipe, and the height of the contact block is higher than the height of the threaded block.

[0017] Working principle: During the use of this device, the exhaust gas flow will enter along the intake pipe, and an external power supply device is required to keep the surfaces of the two sets of electrode plates with positive and negative charges respectively. The particulate impurities in the exhaust gas will be attracted by the electrode plates during the movement, and will remain close to the surface of the electrode plates due to the thrust of the subsequent airflow. At the same time, during the movement of the airflow, the impeller will be driven by the airflow to drive the shaft to rotate, and when the shaft rotates, it will simultaneously drive the brush plate below to rotate. When the brush plate rotates, it will use its fine bristles close to the side of the electrode plate to brush the surface of the electrode plate, and the part of the electrode plate that is brushed can maintain the adsorption effect, and the inclined brush plate will push the impurities on the surface of the electrode plate to the impurity recovery device below during the movement, thereby completing the automatic cleaning of the surface of the electrode plate without the need for additional electronic control devices.

[0018] In addition, during the flow of exhaust gas, due to the small diameter of the end face of the transfer pipe, the gas flow rate at one end close to the intake pipe will be much greater than the flow rate at the end inserted into the catalyst bin. At this time, there will be a certain pressure difference at both ends of the transfer pipe, and the pressure difference will drive the catalyst inside the catalyst bin to move into the intake pipe, and be atomized by the one-way atomizing nozzle at the end of the transfer pipe close to the intake pipe and then sprayed out. At the same time, since the airflow can continuously drive the rotating shaft to rotate during the movement, the spoiler can rotate accordingly, and increase the reaction rate between the mist catalyst and the exhaust gas during the rotation. At the same time, during the flow transmission, the catalyst inside the catalyst bin will be driven to move into the intake pipe. When the sensor and gas concentration sensor detect that the gas flow rate is large and the catalyst supply is insufficient, the water pump will automatically start and run according to the set speed. At this time, the thrust of the water pump will become the main power source for the catalyst to be ejected, and the catalyst ejection amount will be increased by the squeezing of the water pump. At the same time, when the catalyst moves toward the intake pipe, the arc plate will be driven with it, and the component force of the thrust when the catalyst moves will drive the ring block to rotate. During the rotation of the ring block, the stirring rod on its outer arc surface will be driven to rotate synchronously, and the inside of the catalyst bin will be stirred, thereby avoiding the precipitation of the reagent due to the static state of the catalyst bin.

[0019] At the same time, under the obstruction of the electrode plate, some granular impurities will move downward to the inside of the threaded block due to gravity and adhesion catalyst. At this time, the cylindrical groove on the inside of the threaded block will collect such impurities. When more impurities are collected inside the threaded block, the threaded block can be directly rotated and removed while maintaining the exhaust gas treatment. At this time, due to the thrust of the exhaust gas flow and the gravity of the sealing plate itself, the arc shaft will rotate accordingly, and drive multiple groups of sealing plates to move closer to seal the through hole at the lower end of the intake pipe. After people have cleaned and recycled the waste inside the threaded block, they can directly install it under the intake pipe through the threaded groove on its outer arc surface. At this time, the contact block will contact the sealing plate during the upward rotation and push it upward, thereby releasing the sealing state of the lower part of the intake pipe and restoring the threaded block's ability to recycle granular impurities.

[0020] The present invention provides a waste gas treatment device for a thermal power plant. The device has the following beneficial effects:

[0021] 1. The present invention can realize automatic cleaning of the surface of the electrode plate without external energy drive through the support rods, bearings, rotating shafts, impellers, electrode plates and brush rods, effectively extending the service life of the electrode plate and ensuring the continuity and efficiency of electrostatic dust removal. At the same time, this design reduces the maintenance cost of the equipment and improves the economy of the overall operation.

[0022] 2. The present invention can utilize the principles of aerodynamics to achieve automatic atomization and spraying of the catalyst by means of the spoiler, transfer pipe, stirring rod, water pump, connecting rod, ring block, and arc plate, and also significantly improve the contact area and reaction efficiency between the catalyst and the exhaust gas. This innovation not only enhances the effect of exhaust gas treatment, but also reduces the consumption of the catalyst and reduces the operating cost.

[0023] 3. The present invention integrates a flow sensor and a gas concentration sensor to monitor the flow and concentration of exhaust gas in real time, and automatically adjusts the operating state of the water pump according to actual conditions to ensure that the supply of the catalyst matches the exhaust gas treatment requirements. This intelligent adjustment method not only improves the accuracy and stability of exhaust gas treatment, but also realizes the rational use and conservation of energy.

[0024] 4. The present invention can realize automatic collection and rapid cleaning of impurities through the provision of contact blocks, threaded blocks, sealing rings, sealing plates, arc-shaped shafts, and limit blocks, and there is no need to shut down the equipment during the cleaning process. This design not only simplifies the cleaning process, but also improves the cleaning efficiency, ensuring the continuous and stable operation of the exhaust gas treatment equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A perspective view of the present invention;

[0026] Figure 2 It is a schematic cross-sectional view of the middle part of the air intake pipe of the present invention;

[0027] Figure 3 It is a schematic diagram of the cross section of the catalyst bin of the present invention;

[0028] Figure 4 It is a schematic diagram of the inner structure of the ring block of the present invention;

[0029] Figure 5 It is a schematic diagram of the thread block of the present invention;

[0030] Figure 6 It is a schematic diagram of the sealing plate of the present invention.

[0031] Among them, 1. air intake pipe; 2. anti-clogging device; 3. catalyst feeding device; 4. impurity recovery device; 5. gas concentration sensor; 6. flow sensor; 7. exhaust pipe; 8. reaction chamber; 9. catalyst chamber; 201. support rod; 202. bearing; 203. rotating shaft; 204. impeller; 205. electrode plate; 206. brush rod; 301. spoiler; 302. transfer pipe; 303. stirring rod; 304. water pump; 305. connecting rod; 306. ring block; 307. arc plate; 401. contact block; 402. threaded block; 403. sealing ring; 404. sealing plate; 405. arc shaft; 406. limit block. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example:

[0034] Please see attached Figure 1 - Attachment Figure 2 The embodiment of the present invention provides an exhaust gas treatment device for a thermal power plant, including an intake pipe 1, an exhaust pipe 7, and a catalyst bin 9. An anti-blocking device 2 is provided at the middle of the inner surface of the intake pipe 1, a gas concentration sensor 5 is fixedly connected to the upper part of the outer arc surface of the intake pipe 1, a flow sensor 6 is fixedly connected to the upper part of the outer arc surface of the intake pipe 1, an impurity recovery device 4 is provided at the lower part of the outer arc surface of the intake pipe 1, a catalyst feeding device 3 is provided inside the catalyst bin 9, a reaction bin 8 is fixedly connected to the upper part of the catalyst bin 9, and an exhaust pipe 7 is fixedly connected to the upper part of the reaction bin 8;

[0035] The anti-clogging device 2 includes a support rod 201, the end of the support rod 201 is fixedly connected to a bearing 202, the inner arc surface of the bearing 202 is fixedly connected to a rotating shaft 203, the lower part of the outer arc surface of the rotating shaft 203 is fixedly connected to an impeller 204, the lower end of the outer arc surface of the rotating shaft 203 is fixedly connected to a brush rod 206, and the lower part of the outer arc surface of the rotating shaft 203 is rotatably connected to an electrode plate 205.

[0036] The intake pipe 1 is configured as an S-shape as a whole, so that the residence time of the exhaust gas generated during thermal power generation inside the intake pipe 1 can be increased, thereby reserving sufficient reaction time for the catalyst to react with it. A through hole is provided at the bend of the lower end of the intake pipe 1, so that the filtered impurities can fall into the threaded block 402, and a circular protrusion is provided below the through hole. A thread groove is provided at the outer arc surface of the protrusion at the lower end of the intake pipe 1, so that the intake pipe 1 can be threadedly sealed with the threaded block 402. A through hole is provided in the middle of the intake pipe 1, so that it can be connected to the transfer pipe 302. A through hole is provided on the upper part of the outer arc surface of the intake pipe 1, so that the probes of the flow sensor 6 and the gas concentration sensor 5 can be accommodated to extend into the interior of the intake pipe 1. A through hole is provided on the outer arc surface of the reaction chamber 8, so that it can be connected to the intake pipe 1. The outer arc surface of the catalyst chamber 9 A through hole is provided on the arc surface, so that the transfer tube 302 can be extended. The detection probe of the flow sensor 6 is passed through and fixedly connected to the intake pipe 1. The detection probe of the gas concentration sensor 5 is passed through and fixedly connected to the intake pipe 1. The end of the support rod 201 away from the bearing 202 is fixedly connected to the intake pipe 1. There are multiple groups of support rods 201, and the multiple groups of support rods 201 are distributed in an array around the center of the array with the center of the bearing 202 as the center of the array. The inclination angle of the rotating shaft 203 is the same as the inclination angle of the middle part of the intake pipe 1. There are multiple groups of inclined arc blades on the outer arc surface of the impeller 204. Therefore, when the airflow passes through, the impeller 204 can be driven by the airflow to rotate and drive the rotating shaft 203 to rotate synchronously. The outer surface of the brush rod 206 is in contact with the electrode plate 205. There are multiple groups of bristles on the end of the brush rod 206 close to the electrode plate 205. The outer arc surface of the electrode plate 205 is fixedly connected to the intake pipe 1.

[0037] Please see attached Figure 2 - Attachment Figure 4The catalyst feeding device 3 includes a water pump 304, a transfer pipe 302 is fixedly connected to the water outlet of the water pump 304, a one-way atomizing nozzle is provided at the connection between the transfer pipe 302 and the intake pipe 1, so that the sprayed catalyst can be kept in a water mist state, thereby increasing the contact area between the catalyst and the exhaust gas and improving the efficiency of the catalytic reaction. The lower part of the transfer pipe 302 is rotatably connected to a ring block 306, a connecting rod 305 is fixedly connected to the outer arc surface of the ring block 306, and a stirring rod 303 is fixedly connected to the end of the connecting rod 305 away from the ring block 306, an arc plate 307 is provided on the inner arc surface of the ring block 306, and a spoiler 301 is fixedly connected to the middle of the outer arc surface of the rotating shaft 203.

[0038] The bottom surface of the water pump 304 is fixedly connected to the catalyst bin 9. The water pump 304 is a submersible pump in the prior art, so it can be completely immersed in the catalyst for operation. The water inlet of the water pump 304 is located at the lower outer part thereof. The end of the transfer pipe 302 away from the water pump 304 is fixedly connected to the air inlet pipe 1. A circular notch is provided at the lower part of the transfer pipe 302, so that the ring block 306 can be accommodated here. The rotating connection between the ring block 306 and the transfer pipe 302 remains sealed. The stirring rod 303 is arranged in an inclined shape as a whole, so that the catalyst inside the catalyst bin 9 can be stirred during rotation. There are multiple groups of arc plates 307, and the multiple groups of arc plates 307 are distributed in a circular array with the center of the ring block 306 as the center of the array. Therefore, during the movement of the catalyst, the component force of the catalyst movement can drive the ring block 306 to rotate through its inclined surface. A feed port is provided at the upper part of the outer arc surface of the catalyst bin 9.

[0039] Please see attached Figure 1 , Attachment Figure 5 And attached Figure 6 The impurity recovery device 4 includes an arc-shaped shaft 405, a sealing plate 404 is fixedly connected to the outer arc surface of the arc-shaped shaft 405, a limiting block 406 is fixedly connected to the lower part of the intake pipe 1, a threaded block 402 is threadedly connected to the lower part of the intake pipe 1, a sealing ring 403 is fixedly connected to the inside of the threaded block 402, and a contact block 401 is fixedly connected to the middle of the inner surface of the threaded block 402.

[0040] The outer surface of the arc shaft 405 is rotatably connected to the intake pipe 1, and the connection between the arc shaft 405 and the intake pipe 1 is kept sealed. The sealing plate 404 and the arc shaft 405 are provided with multiple groups, and the multiple groups of sealing plates 404 and the arc shaft 405 are arranged in an array around the center of the circular through hole at the lower end of the intake pipe 1. The upper part of the limit block 406 is rotatably connected to the arc shaft 405 and the connection is kept sealed. The upper part of the limit block 406 is provided with a groove with the same curvature as the outer arc surface of the arc shaft 405, so that its upper surface is It is able to maintain contact with the sealing plate 404 and does not produce motion interference with the arc shaft 405. The upper surface of the limit block 406 is in contact with the sealing plate 404, so that the sealing plate 404 cannot rotate downward. A cylindrical groove is provided inside the threaded block 402. The upper surface of the sealing ring 403 is in close contact with the intake pipe 1. The height of the contact block 401 is higher than that of the threaded block 402. Therefore, it can contact the sealing plate 404 during the installation of the threaded block 402 and push it to rotate upward as a whole.

[0041] 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. An exhaust gas treatment device for a thermal power plant, comprising an air intake pipe (1), an exhaust pipe (7), and a catalyst bin (9), It is characterized in that An anti-clogging device (2) is provided at the middle of the inner surface of the intake pipe (1), a gas concentration sensor (5) is fixedly connected to the upper part of the outer arc surface of the intake pipe (1), a flow sensor (6) is fixedly connected to the upper part of the outer arc surface of the intake pipe (1), an impurity recovery device (4) is provided at the lower part of the outer arc surface of the intake pipe (1), a catalyst feeding device (3) is provided inside the catalyst bin (9), a reaction bin (8) is fixedly connected to the upper part of the catalyst bin (9), and an exhaust pipe (7) is fixedly connected to the upper part of the reaction bin (8); The anti-clogging device (2) comprises a support rod (201), the end of the support rod (201) is fixedly connected to a bearing (202), the inner arc surface of the bearing (202) is fixedly connected to a rotating shaft (203), the lower part of the outer arc surface of the rotating shaft (203) is fixedly connected to an impeller (204), the lower end of the outer arc surface of the rotating shaft (203) is fixedly connected to a brush rod (206), and the lower part of the outer arc surface of the rotating shaft (203) is rotatably connected to an electrode plate (205).

2. The exhaust gas treatment device for a thermal power plant according to claim 1, It is characterized in that The catalyst feeding device (3) comprises a water pump (304), a transfer pipe (302) is fixedly connected to the water outlet of the water pump (304), a ring block (306) is rotatably connected to the lower part of the transfer pipe (302), a connecting rod (305) is fixedly connected to the outer arc surface of the ring block (306), a stirring rod (303) is fixedly connected to the end of the connecting rod (305) away from the ring block (306), an arc plate (307) is provided on the inner arc surface of the ring block (306), and a spoiler (301) is fixedly connected to the middle part of the outer arc surface of the rotating shaft (203).

3. The exhaust gas treatment device for a thermal power plant according to claim 1, It is characterized in that The impurity recovery device (4) comprises an arc-shaped shaft (405), a sealing plate (404) is fixedly connected to the outer arc surface of the arc-shaped shaft (405), a limiting block (406) is fixedly connected to the lower part of the intake pipe (1), a threaded block (402) is threadedly connected to the lower part of the intake pipe (1), a sealing ring (403) is fixedly connected to the inside of the threaded block (402), and a contact block (401) is fixedly connected to the middle part of the inner surface of the threaded block (402).

4. The exhaust gas treatment device for a thermal power plant according to claim 1, It is characterized in that The intake pipe (1) is configured as an S-shape as a whole. A through hole is provided at the bend of the lower end of the intake pipe (1), and a circular protrusion is provided below the through hole. A threaded groove is provided on the outer arc surface of the protrusion at the lower end of the intake pipe (1). A through hole is provided in the middle of the intake pipe (1). A through hole is provided on the upper part of the outer arc surface of the intake pipe (1). A through hole is provided on the outer arc surface of the reaction chamber (8). A through hole is provided on the outer arc surface of the catalyst chamber (9). The detection probe of the flow sensor (6) penetrates and is fixedly connected to the intake pipe (1). The detection probe of the gas concentration sensor (5) penetrates and is fixedly connected to the intake pipe (1).

5. The exhaust gas treatment device for a thermal power plant according to claim 1, It is characterized in that One end of the support rod (201) away from the bearing (202) is fixedly connected to the intake pipe (1), and the support rod (201) is provided in multiple groups, and the multiple groups of support rods (201) are distributed in an array around a circle with the center of the bearing (202) as the center of the array, and the inclination angle of the rotating shaft (203) is the same as the inclination angle of the middle part of the intake pipe (1).

6. The exhaust gas treatment device for a thermal power plant according to claim 1, It is characterized in that The outer arc surface of the impeller (204) is provided with a plurality of groups of inclined arc blades, the outer surface of the brush rod (206) is in contact with the electrode plate (205), one end of the brush rod (206) close to the electrode plate (205) is provided with a plurality of groups of bristles, and the outer arc surface of the electrode plate (205) is fixedly connected to the air intake pipe (1).

7. The exhaust gas treatment device for a thermal power plant according to claim 2, It is characterized in that The bottom surface of the water pump (304) is fixedly connected to the catalyst bin (9), the water inlet of the water pump (304) is located at the lower outer side thereof, the end of the transfer pipe (302) away from the water pump (304) is fixedly connected to the air intake pipe (1), a circular notch is provided at the lower part of the transfer pipe (302), and the connection between the ring block (306) and the transfer pipe (302) is kept sealed.

8. The exhaust gas treatment device for a thermal power plant according to claim 2, It is characterized in that The stirring rod (303) is arranged in an inclined shape as a whole, and a plurality of groups of arc plates (307) are arranged, and the plurality of groups of arc plates (307) are arranged in an array around a circle with the center of the ring block (306) as the center of the array, and a feed port is provided on the upper portion of the outer arc surface of the catalyst bin (9).

9. The exhaust gas treatment device for a thermal power plant according to claim 3, It is characterized in that The outer surface of the arc-shaped shaft (405) is rotatably connected to the air intake pipe (1), and the connection between the arc-shaped shaft (405) and the air intake pipe (1) is kept sealed. The sealing plates (404) and the arc-shaped shaft (405) are provided in multiple groups, and the multiple groups of sealing plates (404) and the arc-shaped shaft (405) are arranged in an array around a circle with the center of the circular through hole at the lower end of the air intake pipe (1) as the center of the array. The upper part of the limit block (406) is rotatably connected to the arc-shaped shaft (405) and the connection is kept sealed. The upper part of the limit block (406) is provided with a groove having the same curvature as the outer arc surface of the arc-shaped shaft (405), and the upper surface of the limit block (406) is in contact with the sealing plate (404).

10. The exhaust gas treatment device for a thermal power plant according to claim 3, It is characterized in that A cylindrical groove is provided inside the threaded block (402), the upper surface of the sealing ring (403) is in close contact with the air intake pipe (1), and the height of the contact block (401) is higher than that of the threaded block (402).

Images