Dust removal system for denitration reactor

Abstract

The dust removal system comprises a furnace body, a plurality of catalysis modules are arranged in the furnace body, a dust removal device is arranged above each catalysis module, and a plurality of dust concentration measurement sensors are further arranged in the furnace body; the dust removal device comprises an upper-layer frame and a lower-layer frame, the upper-layer frame can move along the furnace body, and the lower-layer frame can move up and down relative to the upper-layer frame; a plurality of first ash removal assemblies are arranged on the lower-layer frame, and each first ash removal assembly communicates with a multi-channel fan; and a second ash removal assembly is arranged below the lower-layer frame and is also communicated with the multi-channel fan. The upper-layer frame and the lower-layer frame can be adjusted at will, so that the positions of the first ash removal assembly and the second ash removal assembly are conveniently controlled, and ash removal rollers are matched for ash removal, so that ash removal is more thorough; and the dust concentration is detected through the dust concentration measuring sensor, so that the positions of the first dust removal assembly and the second dust removal assembly are adjusted in a matched mode, and universality is better.

Description

Technical Field

[0001] The invention belongs to the technical field of denitration reaction devices, and in particular relates to a dust removal system for a denitration reactor. Background Art

[0002] At present, the selective catalytic reduction denitrification technology is the denitrification technology with the highest denitrification efficiency and the most market prospects. During SCR denitrification, the catalyst is placed in the furnace of the SCR reactor, and the reducing agent is sprayed into the open end of the reactor. After being fully mixed with the nitrate-containing gas, it enters the reactor, and the airflow passes through the pores of the catalyst at the designed wind speed and contacts the catalyst. Usually, an acoustic wave cleaner and a rake-type cleaner are set on the upper part of the catalyst in the reactor for cleaning to prevent the gas containing dust from clogging the catalyst pores; when the dust concentration in the flue gas is too high, the dust in the flue gas is easy to clog the catalyst pores, and the existing acoustic wave cleaner and rake-type cleaner are difficult to thoroughly clean the dust that clogs the catalyst pores. The existing patent document with the publication number CN117815894A discloses a vibration pulse integrated cleaning device for cement denitration reactor. The cleaning component is arranged on the warehouse wall of the reaction chamber. The cleaning component is arranged in multiple groups at intervals up and down, and corresponds to each catalyst layer respectively. The cleaning component includes a vibration generator, a sonic nozzle, a pulse generator and a pulse nozzle. The vibration generator is used to generate continuous sound waves and transmit them to the reaction chamber through the sonic nozzle. The pulse generator is used to generate pulsed airflow and spray it to the catalyst surface in the reaction chamber through the pulse nozzle. The existing cleaning device can not completely remove dust by only combining the vibration generator with the pulse generator. When the dust concentration in the furnace body is different, the position of the pulse generator cannot be adapted and adjusted, so that the dust on the surface of the catalyst layer cannot be effectively removed, and the versatility is poor. Therefore, it is necessary to design a dust removal system for a denitration reactor to overcome the above difficulties. Summary of the invention

[0003] In view of the problems existing in the prior art, the present invention designs a dust removal system for a denitrification reactor. The upper frame and the lower frame of the present invention can be adjusted arbitrarily, so as to facilitate the control of the positions of the first cleaning component and the second cleaning component. The cleaning is carried out by cooperating with the cleaning roller, and the cleaning is more thorough. The dust concentration is detected by a dust concentration measuring sensor, so as to adapt and adjust the positions of the first cleaning component and the second cleaning component, and the versatility is better.

[0004] The inventive object of the present invention is achieved through the following technical solutions: a dust removal system for a denitrification reactor, comprising a furnace body, in which a plurality of catalytic modules are arranged side by side and adjacent to each other, a dust removal device is arranged above each of the catalytic modules, and a plurality of dust concentration measurement sensors are also arranged in the furnace body; the dust removal device comprises an upper frame and a lower frame, the upper frame can move radially along the furnace body, and the lower frame can move up and down relative to the upper frame; the lower frame is provided with a plurality of first cleaning components arranged side by side, each of the first cleaning components is connected to a multi-channel fan arranged on the outside of the furnace body; a second cleaning component which can move horizontally relative to the lower frame is provided below the lower frame, and the second cleaning component is also connected to the multi-channel fan.

[0005] Preferably, a transmission assembly is provided between the upper frame and the furnace body, which drives the upper frame to move horizontally and radially relative to the furnace body; the transmission assembly includes a driving motor, a transmission screw, a double-row sprocket and a chain belt; a number of guide rods arranged side by side are provided in the furnace body, a number of guide wheels rotatably connected to the upper frame are provided on the upper frame, and the guide rods are arranged between the guide wheels and the upper frame; a mounting bracket is provided on the outside of the furnace body, the transmission screw is arranged between the furnace body and the mounting bracket, and the transmission screw is rotatably connected to the mounting bracket; the transmission screw is inserted into the extension arm of the upper frame, and the transmission screw and the extension arm of the upper frame are meshed with each other; a driving motor is fixedly mounted on the mounting bracket, and a double-row sprocket is fixedly mounted on the motor shaft of the driving motor; the transmission screws are arranged in pairs, and a double-row sprocket is fixedly mounted on the transmission screw, and adjacent double-row sprockets are connected by a chain belt; when the driving motor drives the transmission screw to rotate, the upper frame moves along the guide rods.

[0006] Preferably, a lower frame is provided below the upper frame and is slidably connected to the upper frame; a first cylinder is fixedly mounted on the upper frame, and the piston shaft of the first cylinder is connected to the lower frame; a plurality of guide grooves are provided at the edge of the upper frame, and a plurality of rolling wheels are provided at the edge of the lower frame and are rotatably connected to the upper frame, and the rolling wheels are slidably mounted in the guide grooves; the inner walls of the guide grooves are provided with limiting grooves arranged in pairs, and the spacing between the two limiting grooves is matched with the outer diameter of the rolling wheels.

[0007] When the driving motor is working, it drives the double-row sprocket to rotate, and the double-row sprocket drives the transmission screw arranged adjacent to it to rotate through the chain belt, and when the transmission screw rotates, it drives the upper frame to engage and move; the upper frame is installed on the guide rod through the guide wheel, so that the process of the upper frame moving back and forth relative to the furnace body is more flat; when the upper frame moves, it drives the lower frame to move synchronously, so that it is convenient to adjust the front and rear positions of the first cleaning component and the second cleaning component, so that a larger area can be covered on the surface of the catalytic module, and the cleaning effect is better. When the first cylinder is working, it can control the lower frame to move up and down relative to the upper frame, so as to adapt and adjust the vertical height of the first cleaning component and the second cleaning component relative to the catalytic module. The dust concentration in the furnace body is detected by the dust concentration measurement sensor, so as to adapt and adjust the vertical height of the lower frame. The closer the first cleaning component and the second cleaning component are to the catalytic module, the better the cleaning effect. By setting the guide groove and the limit groove, it is convenient to control the maximum descending distance of the lower frame to prevent the lower frame from separating from the upper frame.

[0008] Preferably, the lower frame is provided with a plurality of first ash cleaning components arranged side by side and adjacent to each other, and a main duct for ventilation is provided between each of the first ash cleaning components; a first air intake duct is provided on the side of the furnace body, and a first telescopic duct connecting the first air intake duct and the main duct is provided between the two; the first air intake duct is connected to a multi-channel fan; and a one-way valve assembly is provided between the main duct and each of the first ash cleaning components.

[0009] Preferably, the one-way valve assembly comprises a valve base and an umbrella-shaped diaphragm; the valve base is fixedly mounted on the opening end of the first dust cleaning assembly, and an umbrella-shaped diaphragm capable of elastic deformation relative to the valve base is disposed in the valve base.

[0010] Preferably, the first cleaning component is hollow, and a plurality of evenly distributed first air outlet holes are provided at the bottom of the first cleaning component; wind guiding slopes are provided on the left and right sides of the first air outlet holes; and a first solenoid valve for controlling on and off is provided at the open end of the first air inlet duct.

[0011] Both the first cleaning component and the second cleaning component take in air through a multi-channel fan, which has better versatility. When the dust concentration measurement sensor detects that the dust concentration in the furnace is high, dust removal is performed through the first cleaning component on the lower frame alone; at this time, the first solenoid valve controls the first air intake duct to be in an open state, and the gas will first enter the main duct, and then enter each first cleaning component from the main duct; each of the first cleaning components is provided with a one-way valve component to avoid gas backflow diffusion; mutual interference between the first cleaning components is avoided, and the first cleaning components have a better cleaning effect. A number of evenly distributed first air outlets are provided at the bottom of the first cleaning component; wind guide slopes are provided on the left and right sides of the first air outlet, so that the airflow is guided, the air outlet effect is better, and the dust removal is more thorough.

[0012] Preferably, the lower frame is provided with a second bracket slidably connected thereto; the second bracket is provided with a cleaning roller rotatably connected thereto, and the second bracket is also provided with a second cleaning component fixedly connected thereto; the second cleaning component is interconnected with the multi-channel fan.

[0013] Preferably, both sides of the lower frame are provided with paired strip-shaped limiting protrusions, and the second bracket is slidably installed on the strip-shaped limiting protrusions; a rack coaxially arranged therewith is provided below the strip-shaped limiting protrusion, and a first motor is fixedly installed on the second bracket, and a gear is provided on the motor shaft of the first motor; the gear and the rack are meshed with each other, and when the first motor is working, it drives the second bracket to move back and forth along the lower frame.

[0014] Preferably, a second motor is fixedly mounted on the second bracket, and the cleaning roller is rotatably connected to the second bracket; a pulley is provided on the motor shaft of the second motor, and a pulley is also fixedly mounted on the rotating shaft of the cleaning roller, and a conveyor belt for transmission is provided between the two pulleys; a second cleaning assembly is mounted on the second bracket, and a plurality of second air outlets are provided on the second cleaning assembly, and the second air outlets are inclined to the catalytic module; the second cleaning assembly can move back and forth relative to the furnace body, and a second air intake duct is provided on the outer side of the furnace body, and the second air intake duct is connected to the multi-channel fan; a second telescopic duct is provided between the second air intake duct and the opening end of the second cleaning assembly; the opening end of the second air intake duct is provided with a second solenoid valve for controlling on and off.

[0015] When the dust concentration in the furnace is low or there is no catalytic reaction in the furnace, the second cleaning component and the cleaning roller on the second bracket are used for cleaning, which greatly saves costs and has better versatility. When the first motor is working, it drives the gear to rotate, so that the second bracket can mesh and move relative to the lower frame; the second bracket is provided with a second cleaning component, and the second cleaning component is provided with a plurality of second air outlets, and the second air outlets are inclined with the catalytic module; at this time, the second solenoid valve controls the second air inlet duct to open, so that the second cleaning component can remove dust on the catalytic module when it moves back and forth; at the same time, the second motor works to drive the cleaning roller to rotate through the conveyor belt, so that the cleaning roller and the second cleaning component cooperate with each other to clean, and the cleaning effect is better, thereby avoiding clogging of the mesh on the catalytic module.

[0016] Preferably, the dust concentration measurement sensor is electrically connected to the main control module, and the multi-channel fan is also electrically connected to the main control module; a first air intake duct and a second air intake duct are respectively provided on the outside of the furnace body, a first solenoid valve is provided in the first air intake duct, and a second solenoid valve is provided in the second air intake duct; the first solenoid valve and the second solenoid valve are both electrically connected to the main control module.

[0017] The first air intake duct and the second air intake duct can independently intake air, and the dust concentration in the furnace body is monitored in real time through the dust concentration measurement sensor, and then an electrical signal is sent to the main control module; the main control module thereby selectively controls the operation of the first solenoid valve or the second solenoid valve; when the first cleaning component is required to remove dust, the first solenoid valve is opened and the second solenoid valve is closed; when the second cleaning component is required to remove dust, the first solenoid valve is closed and the second solenoid valve is opened.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. The upper frame can move horizontally and radially relative to the furnace body, and the lower frame can move up and down relative to the furnace body, so as to facilitate the arbitrary adjustment of the position of the first cleaning component and the second cleaning component, cover a larger area of ​​the catalytic module, and clean more thoroughly. 2. The dust concentration in the furnace body is detected by a dust concentration measurement sensor, so as to adapt and adjust the upper and lower heights of the lower frame and the catalytic module, so as to ensure that the cleaning force of the first cleaning component and the second cleaning component is the largest and the cleaning effect is better. 3. The dust concentration in the furnace body is detected by a dust concentration measurement sensor, so as to adapt and control the opening and closing of the first air intake duct and the second air intake duct; when the dust concentration is high, the first solenoid valve is opened; when the dust concentration is low, the second solenoid valve is opened; in this way, the first cleaning component or the second cleaning component is selected to work according to the actual working conditions, which greatly saves energy consumption. 4. By setting a one-way valve component in the first cleaning component, the airflow backflow is avoided, each of the first cleaning components does not interfere with each other, and the cleaning process is more reliable. 5. The air is taken in through multiple channels of the multi-channel fan, which has good dust removal effect, simple pipe connection and more reliable air outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of the present invention; Figure 2 It is the internal structure diagram of the present invention; Figure 3 for Figure 2 A partial enlarged view of position A in the middle; Figure 4 A three-dimensional diagram of the hidden furnace body of the present invention; Figure 5 is a three-dimensional diagram of a dust removal device; Figure 6 A three-dimensional diagram of the dust removal device from another perspective; Figure 7 An exploded view of the dust removal device; Figure 8 It is a three-dimensional diagram of the upper frame; Fig. 9 It is a three-dimensional diagram of the lower frame; Fig.10 is a three-dimensional diagram of a first dust cleaning component; Markings in the figure: 1. furnace body; 2. catalytic module; 3. dust removal device; 4. dust concentration measurement sensor; 5. upper frame; 6. lower frame; 7. first dust cleaning component; 71. first air outlet; 72. wind guide slope; 8. multi-channel fan; 9. transmission component; 91. drive motor; 92. transmission screw; 93. double-row sprocket; 94. chain belt; 10. second dust cleaning component; 101. second air outlet; 11. guide rod; 12. guide wheel; 13. mounting bracket; 14. first cylinder; 15. guide groove; 16, rolling wheel; 17, limiting groove; 18, main pipeline; 19, first air intake pipeline; 20, first telescopic pipeline; 21, one-way valve assembly; 211, valve base; 212, umbrella-shaped diaphragm; 22, second bracket; 23, strip-shaped limiting protrusion; 24, rack; 25, first motor; 26, gear; 27, second motor; 28, cleaning roller; 29, pulley; 30, conveyor belt; 31, second air intake pipeline; 32, second telescopic pipeline; 33, first solenoid valve; 34, second solenoid valve. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings: like Figures 1 to 10 As shown, the present embodiment discloses a dust removal system for a denitration reactor, comprising a furnace body 1, in which a plurality of catalytic modules 2 arranged side by side and adjacent to each other are arranged, a dust removal device 3 is arranged above each of the catalytic modules 2, and a plurality of dust concentration measurement sensors 4 are also arranged in the furnace body 1; the dust removal device 3 comprises an upper frame 5 and a lower frame 6, the upper frame 5 can move radially along the furnace body 1, and the lower frame 6 can move up and down relative to the upper frame 5; the lower frame 6 is provided with a plurality of first cleaning components 7 arranged side by side, each of the first cleaning components 7 is connected to a multi-channel fan 8 arranged on the outside of the furnace body 1; a second cleaning component 10 which can move horizontally relative to the lower frame 6 is provided below the lower frame 6, and the second cleaning component 10 is also connected to the multi-channel fan 8.

[0021] A transmission assembly 9 is provided between the upper frame 5 and the furnace body 1 to drive the upper frame 5 to move horizontally and radially relative to the furnace body 1; the transmission assembly 9 includes a driving motor 91, a transmission screw 92, a double-row sprocket 93 and a chain belt 94; a plurality of guide rods 11 arranged side by side are provided in the furnace body 1, a plurality of guide wheels 12 rotatably connected to the upper frame 5 are provided on the upper frame 5, and the guide rods 11 are arranged between the guide wheels 12 and the upper frame 5; a mounting bracket 13 is provided on the outer side of the furnace body 1, the transmission screw 92 is arranged between the furnace body 1 and the mounting bracket 13, and the transmission screw 93 is arranged between the furnace body 1 and the mounting bracket 13. The rod 92 is rotatably connected to the mounting bracket 13; the transmission screw 92 is inserted into the extension arm of the upper frame 5, and the transmission screw 92 and the extension arm of the upper frame 5 are meshed with each other; a drive motor 91 is fixedly mounted on the mounting bracket 13, and a double-row sprocket 93 is fixedly mounted on the motor shaft of the drive motor 91; the transmission screw 92 is arranged in pairs, and a double-row sprocket 93 is fixedly mounted on the transmission screw 92, and the adjacent double-row sprockets 93 are connected by a chain belt 94; when the drive motor 91 drives the transmission screw 92 to rotate, the upper frame 5 moves along the guide rod 11. A lower frame 6 is provided below the upper frame 5 and is slidably connected to the upper frame 5; a first cylinder 14 is fixedly installed on the upper frame 5, and the piston shaft of the first cylinder 14 is connected to the lower frame 6; a plurality of guide grooves 15 are provided at the edge of the upper frame 5, and a plurality of rolling wheels 16 are provided at the edge of the lower frame 6 and are rotatably connected to the lower frame 6, and the rolling wheels 16 are slidably installed in the guide grooves 15; the inner wall of the guide groove 15 is provided with a pair of limit grooves 17, and the spacing between the two limit grooves 17 is matched with the outer diameter of the rolling wheel 16.

[0022] The lower frame 6 is provided with a plurality of first ash cleaning components 7 arranged side by side and adjacent to each other, and a main duct 18 for ventilation is provided between each of the first ash cleaning components 7; a first air intake duct 19 is provided on the side of the furnace body 1, and a first telescopic duct 20 connecting the first air intake duct 19 and the main duct 18 is provided between the two; the first air intake duct 19 is communicated with the multi-channel fan 8; a one-way valve component 21 is provided between the main duct 18 and each of the first ash cleaning components 7. The one-way valve component 21 includes a valve base 211 and an umbrella-shaped diaphragm 212; the valve base 211 is fixedly installed at the open end of the first ash cleaning component 7, and an umbrella-shaped diaphragm 212 that can be elastically deformed relative to the valve base 211 is provided inside the valve base 211. The first ash cleaning component 7 is hollow, and a plurality of evenly distributed first air outlet holes 71 are provided at the bottom of the first ash cleaning component 7; wind guide slopes 72 are provided on the left and right sides of the first air outlet holes 71; and a first solenoid valve 33 for controlling on and off is provided at the open end of the first air intake duct 19.

[0023] The lower frame 6 is provided with a second bracket 22 slidably connected thereto; the second bracket 22 is provided with a cleaning roller 28 rotatably connected thereto, and the second bracket 22 is also provided with a second cleaning assembly 10 fixedly connected thereto; the second cleaning assembly 10 is interconnected with the multi-channel fan 8. Pairs of bar-shaped limiting protrusions 23 are provided on both sides of the lower frame 6, and the second bracket 22 is slidably mounted on the bar-shaped limiting protrusions 23; a rack 24 coaxially arranged therewith is provided below the bar-shaped limiting protrusions 23, a first motor 25 is fixedly mounted on the second bracket 22, and a gear 26 is provided on the motor shaft of the first motor 25; the gear 26 and the rack 24 are meshed with each other, and when the first motor 25 is working, it drives the second bracket 22 to move back and forth along the lower frame 6. A second motor 27 is fixedly mounted on the second bracket 22, and the cleaning roller 28 is rotatably connected to the second bracket 22; a pulley 29 is provided on the motor shaft of the second motor 27, and a pulley 29 is also fixedly mounted on the rotating shaft of the cleaning roller 28, and a conveyor belt 30 for transmission is provided between the two pulleys 29; a second cleaning component 10 is mounted on the second bracket 22, and a plurality of second air outlets 101 are provided on the second cleaning component 10, and the second air outlets 101 are inclined to the catalytic module 2; the second cleaning component 10 can move back and forth relative to the furnace body 1, and a second air intake duct 31 is provided on the outer side of the furnace body 1, and the second air intake duct 31 is connected to the multi-channel fan 8; a second telescopic duct 32 is provided between the second air intake duct 31 and the opening end of the second cleaning component 10; the opening end of the second air intake duct 31 is provided with a second solenoid valve 34 for controlling on and off. The dust concentration measurement sensor 4 is electrically connected to the main control module, and the multi-channel fan 8 is also electrically connected to the main control module; a first air intake duct 19 and a second air intake duct 31 are respectively provided on the outside of the furnace body 1, a first solenoid valve 33 is provided in the first air intake duct 19, and a second solenoid valve 34 is provided in the second air intake duct 31; the first solenoid valve 33 and the second solenoid valve 34 are both electrically connected to the main control module.

[0024] The specific operation process of this embodiment is as follows: the first air intake duct 19 and the second air intake duct 31 can independently intake air, and the dust concentration in the furnace body 1 is monitored in real time through the dust concentration measurement sensor 4, and then an electrical signal is sent to the main control module; the main control module thereby selectively controls the first solenoid valve 33 or the second solenoid valve 34 to work; when the first cleaning component 7 is required to remove dust, the first solenoid valve 33 is opened and the second solenoid valve 34 is closed; when the second cleaning component 10 is required to remove dust, the first solenoid valve 33 is closed and the second solenoid valve 34 is opened.

[0025] When the dust concentration measurement sensor 4 detects that the dust concentration in the furnace body 1 is high, the dust is removed through the first dust cleaning component 7 on the lower frame 6 alone; at this time, the first solenoid valve 33 controls the first air inlet pipe 19 to be in an open state, and the gas will first enter the main pipe 18, and then enter each first dust cleaning component 7 from the main pipe 18; each of the first dust cleaning components 7 is provided with a one-way valve component 21 to avoid gas backflow diffusion; to avoid mutual interference between the first dust cleaning components 7, the first dust cleaning component 7 has a better dust cleaning effect. A number of evenly distributed first air outlet holes 71 are provided at the bottom of the first dust cleaning component 7; wind guide slopes 72 are provided on the left and right sides of the first air outlet hole 71, so that the airflow is guided, the air outlet effect is better, and the dust removal is more thorough.

[0026] When the dust concentration in the furnace body 1 is low or there is no catalytic reaction in the furnace body 1, the second cleaning assembly 10 and the cleaning roller 28 on the second bracket 22 are used for cleaning, which greatly saves costs and has better versatility. When the first motor 25 is working, it drives the gear 26 to rotate, so that the second bracket 22 can mesh and move relative to the lower frame 6; the second cleaning assembly 10 is provided on the second bracket 22, and a plurality of second air outlets 101 are provided on the second cleaning assembly 10, and the second air outlets 101 are inclined with the catalytic module 2; at this time, the second solenoid valve 34 controls the second air inlet duct 31 to open, so that the second cleaning assembly 10 can remove dust on the catalytic module 2 when it moves back and forth; at the same time, the second motor 27 works and drives the cleaning roller 28 to rotate through the conveyor belt 30, so that the cleaning roller 28 and the second cleaning assembly 10 cooperate with each other to clean, and the cleaning effect is better, thereby avoiding the clogging of the mesh on the catalytic module 2.

[0027] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A dust removal system for a denitration reactor, comprising a furnace body (1), wherein a plurality of catalytic modules (2) are arranged side by side and adjacent to each other in the furnace body (1), characterized in that: A dust removal device (3) is provided above each of the catalytic modules (2), and a plurality of dust concentration measurement sensors (4) are also provided in the furnace body (1); the dust removal device (3) comprises an upper frame (5) and a lower frame (6), the upper frame (5) being capable of moving radially along the furnace body (1), and the lower frame (6) being capable of moving up and down relative to the upper frame (5); a plurality of first cleaning components (7) arranged side by side are provided on the lower frame (6), and each of the first cleaning components (7) is connected to a multi-channel fan (8) arranged outside the furnace body (1); a second cleaning component (10) capable of moving horizontally relative to the lower frame (6) is provided below the lower frame (6), and the second cleaning component (10) is also connected to the multi-channel fan (8).

2. The dust removal system for a denitration reactor according to claim 1, characterized in that: A transmission assembly (9) is provided between the upper frame (5) and the furnace body (1) for driving the upper frame (5) to move horizontally and radially relative to the furnace body (1); the transmission assembly (9) comprises a driving motor (91), a transmission screw (92), a double-row sprocket (93) and a chain belt (94); a plurality of guide rods (11) arranged side by side are provided in the furnace body (1); a plurality of guide wheels (12) rotatably connected to the upper frame (5) are provided on the upper frame (5); the guide rods (11) are arranged between the guide wheels (12) and the upper frame (5); a mounting bracket (13) is provided on the outer side of the furnace body (1); the transmission screw (92) is arranged between the furnace body (1) and the mounting bracket (13); The transmission screw (92) is rotatably connected to the mounting bracket (13); the transmission screw (92) is inserted into the extension arm of the upper frame (5), and the transmission screw (92) and the extension arm of the upper frame (5) are meshed with each other; a driving motor (91) is fixedly mounted on the mounting bracket (13), and a double-row sprocket (93) is fixedly mounted on the motor shaft of the driving motor (91); the transmission screws (92) are arranged in pairs, and the double-row sprockets (93) are fixedly mounted on the transmission screws (92), and the adjacent double-row sprockets (93) are connected by a chain belt (94); when the driving motor (91) drives the transmission screw (92) to rotate, the upper frame (5) moves along the guide rod (11).

3. The dust removal system for a denitration reactor according to claim 2, characterized in that: A lower frame (6) is provided below the upper frame (5) and is slidably connected to the upper frame (5); a first cylinder (14) is fixedly mounted on the upper frame (5), and a piston shaft of the first cylinder (14) is connected to the lower frame (6); a plurality of guide grooves (15) are provided on the edge of the upper frame (5), and a plurality of rolling wheels (16) are rotatably connected to the lower frame (6), and the rolling wheels (16) are slidably mounted in the guide grooves (15); and a pair of limiting grooves (17) are provided on the inner wall of the guide groove (15), and the spacing between the two limiting grooves (17) is matched with the outer diameter of the rolling wheel (16).

4. The dust removal system for a denitration reactor according to claim 1, characterized in that: The lower frame (6) is provided with a plurality of first ash cleaning components (7) arranged side by side and adjacent to each other, and a main duct (18) for ventilation is provided between each of the first ash cleaning components (7); a first air intake duct (19) is provided on the side of the furnace body (1), and a first telescopic duct (20) is provided between the first air intake duct (19) and the main duct (18) to connect the two; the first air intake duct (19) is connected to the multi-channel fan (8); and a one-way valve assembly (21) is provided between the main duct (18) and each of the first ash cleaning components (7).

5. The dust removal system for a denitration reactor according to claim 4, characterized in that: The one-way valve assembly (21) comprises a valve base (211) and an umbrella-shaped diaphragm (212); the valve base (211) is fixedly mounted on the open end of the first dust cleaning assembly (7), and the valve base (211) is provided with an umbrella-shaped diaphragm (212) capable of elastic deformation relative to the valve base (211).

6. The dust removal system for a denitration reactor according to claim 4, characterized in that: The first dust cleaning component (7) is hollow, and a plurality of evenly distributed first air outlet holes (71) are provided at the bottom of the first dust cleaning component (7); wind guide inclined surfaces (72) are provided on the left and right sides of the first air outlet holes (71); and a first solenoid valve (33) for controlling on and off is provided at the open end of the first air inlet duct (19).

7. The dust removal system for a denitration reactor according to claim 4, characterized in that: The lower frame (6) is provided with a second bracket (22) slidably connected thereto; the second bracket (22) is provided with a dust cleaning roller (28) rotatably connected thereto; the second bracket (22) is also provided with a second dust cleaning component (10) fixedly connected thereto; the second dust cleaning component (10) is in communication with the multi-channel fan (8).

8. The dust removal system for a denitration reactor according to claim 7, characterized in that: Pairs of strip-shaped limiting protrusions (23) are provided on both sides of the lower frame (6), and the second bracket (22) is slidably mounted on the strip-shaped limiting protrusions (23); a rack (24) coaxially arranged therewith is provided below the strip-shaped limiting protrusions (23); a first motor (25) is fixedly mounted on the second bracket (22), and a gear (26) is provided on the motor shaft of the first motor (25); the gear (26) and the rack (24) are meshed with each other, and when the first motor (25) is in operation, it drives the second bracket (22) to move back and forth along the lower frame (6).

9. The dust removal system for a denitration reactor according to claim 7, characterized in that: A second motor (27) is fixedly mounted on the second bracket (22), and the cleaning roller (28) is rotatably connected to the second bracket (22); a pulley (29) is provided on the motor shaft of the second motor (27), and a pulley (29) is also fixedly mounted on the rotating shaft of the cleaning roller (28), and a transmission belt (30) for transmission is provided between the two pulleys (29); a second cleaning assembly (10) is mounted on the second bracket (22), and a plurality of second air outlet holes (10) are provided on the second cleaning assembly (10). 1), the second air outlet (101) and the catalytic module (2) are arranged at an angle; the second cleaning assembly (10) can move back and forth relative to the furnace body (1); a second air intake duct (31) is arranged on the outer side of the furnace body (1), and the second air intake duct (31) is connected to the multi-channel fan (8); a second telescopic duct (32) is arranged between the second air intake duct (31) and the open end of the second cleaning assembly (10); and a second solenoid valve (34) for controlling on and off is arranged at the open end of the second air intake duct (31).

10. The dust removal system for a denitration reactor according to claim 1, characterized in that: The dust concentration measurement sensor (4) is electrically connected to a main control module, and the multi-channel fan (8) is also electrically connected to the main control module; a first air intake duct (19) and a second air intake duct (31) are respectively provided on the outside of the furnace body (1); a first solenoid valve (33) is provided in the first air intake duct (19), and a second solenoid valve (34) is provided in the second air intake duct (31); the first solenoid valve (33) and the second solenoid valve (34) are both electrically connected to the main control module.

Images