A low-temperature denitrification device for high-dust flue gas

Abstract

The present invention discloses a low-temperature denitration device for high-dust flue gas, comprising a body provided with a sealing door, the body being provided with: a reaction chamber, an air intake pipe and a baffle, the reaction chamber being opened in the lower end of the body, the air intake pipe being fixedly connected to the bottom end of the body, and the air intake pipe being communicated with the reaction chamber, the baffle being fixedly arranged in the reaction chamber, an installation chamber, a working box and a filter plate, the installation chamber being opened in the upper end of the body, the working box being fixedly arranged in the installation chamber, the filter plate being fixedly connected to the bottom end of the working box, and the working box being communicated with the reaction chamber through the filter plate. The advantages are: the present invention first separates gas and gas impurities in the flue gas through the baffle, and then performs secondary filtration on the flue gas through the filter plate, which helps to improve the purity of the flue gas when it enters the working box, and guides the flue gas through the fan blades, which helps to improve the transportation efficiency of the flue gas.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas denitrification, and in particular to a low-temperature denitrification device for high-dust flue gas. Background Art

[0002] There are two main types of flue gas denitrification technologies: dry and wet. Compared with wet flue gas denitrification technology, the main advantages of dry flue gas denitrification technology are: low basic investment, simple equipment and process, high efficiency of NOX removal, no wastewater and waste treatment, and not easy to cause secondary pollution.

[0003] The prior art mostly adopts a low-temperature denitration device for high-dust flue gas disclosed by announcement number CN216964149U. Through the cooperation between the first fan, the first stirring rod, the second fan and the second stirring rod, when the flue gas blows toward the first fan and the second fan, it will drive the first stirring rod and the second stirring rod to rotate, thereby stirring the internal catalyst, increasing the contact area between the catalyst particles and the flue gas. The above device has the following defects during use:

[0004] The above-mentioned device rotates the second fan by blowing the smoke, but the smoke itself is disordered, which makes the second fan unable to continuously rotate in one direction. The second fan drives the second stirring rod to rotate, and the second stirring rod stirs the smoke, making the flow of the smoke more disordered, resulting in the purified smoke unable to be discharged quickly, and the initial force of the smoke is limited and cannot continuously drive the first fan and the second fan to rotate. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that flue gas cannot be discharged quickly without a stable guiding effect, and to propose a low-temperature denitrification device for high-dust flue gas.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A low-temperature denitration device for high-dust flue gas, comprising a body provided with a sealed door, the body being provided with: a reaction chamber, an air intake pipe and a baffle, the reaction chamber being opened in the lower end of the body, the air intake pipe being fixedly connected to the bottom end of the body, and the air intake pipe being communicated with the reaction chamber, the baffle being fixedly arranged in the reaction chamber; an installation chamber, a working box and a filter plate, the installation chamber being opened in the upper end of the body, the working box being fixedly arranged in the installation chamber, the filter plate being fixedly connected to the bottom end of the working box, and the working box passing through the filter plate. The filter plate is connected to the reaction chamber; an exhaust pipe, which is fixedly connected to the working box and extends out of the machine body; a motor, a rotating shaft and fan blades, wherein the motor is fixedly mounted on the machine body, the rotating shaft is fixedly connected to the output end of the motor, and the rotating shaft extends into the reaction chamber through the mounting chamber and the working box, and the fan blades are fixedly sleeved on one end of the rotating shaft located in the reaction chamber; a stirring mechanism driven by the rotating shaft, wherein the stirring mechanism is arranged in the machine body, and the stirring mechanism is used to mix the catalyst with the flue gas and clean the filter plate.

[0008] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: two baffles are provided, and the two baffles arranged opposite to each other are arranged to be inclined downward.

[0009] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: the working box is a cylindrical structure, a catalyst is arranged in the working box, and the rotating shaft is arranged concentrically with the working box.

[0010] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: the stirring mechanism includes: a driving cross plate, the driving cross plate is fixedly sleeved on one end of the rotating shaft located in the working box; a guide rod and a guide slider, the guide rod is fixedly connected to the working box, and the guide slider is slidably sleeved on the guide rod; a traction rod, the two ends of the traction rod are respectively driven on the cross plate and the guide slider; a mounting plate, a ball screw and a nut, the mounting plate is fixedly mounted on the machine body, the ball screw is rotatably mounted on the mounting plate through a damping bearing, and the nut is matched with the ball screw The invention relates to a gear wheel, a driving gear and a driven gear meshing with each other, the driving gear is fixedly mounted on the rotating shaft, and the driven gear is fixedly mounted on the upper end of the ball screw; a connecting rod and a driving plate, the connecting rod is fixedly connected to the nut, the driving plate is slidably connected to the machine body, and the driving plate is fixedly connected to the connecting rod; a movable rod, a cleaning plate and a driving rod, the movable rod is slidably mounted on the lower end of the machine body, and one end of the movable rod extends into the reaction chamber, the cleaning plate is fixedly connected to one end of the movable rod located in the reaction chamber, and both ends of the driving rod are respectively pin-connected to the movable rod and the driving plate.

[0011] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: a guide through hole for slidingly fitting the guide rod is provided on the guide slider.

[0012] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: a movable opening for movably accommodating the driven gear is opened on the machine body.

[0013] In order to better achieve the above-mentioned purpose, the present invention adopts a further technical solution: the connecting rod is an L-shaped cylindrical structure.

[0014] In order to better achieve the above purpose, the present invention adopts a further technical solution: the upper surface of the cleaning plate is movably abutted against the bottom end of the filter plate, and a movable semicircular hole for movably accommodating the rotating shaft is opened on the cleaning plate.

[0015] The advantages of the present invention are:

[0016] 1. The present invention first separates the gas and gas impurities in the flue gas through the baffle plate, and then performs secondary filtration on the flue gas through the filter plate, which helps to improve the purity of the flue gas when it enters the working box, and guides the flue gas through the fan blades, which helps to improve the transportation efficiency of the flue gas.

[0017] 2. In the present invention, the rotating shaft drives the driving cross plate to rotate forward and reversely, and the driving cross plate drives the guide slider to perform reciprocating radial motion on the guide rod through the traction rod. The rotation of the driving cross plate is used to accelerate the mixing efficiency of the flue gas and the catalyst, and the radial motion of the guide slider is used to further improve the mixing efficiency of the flue gas and the catalyst, which helps to improve the working efficiency of the device.

[0018] 3. The rotating shaft of the present invention drives the ball screw to rotate back and forth through the meshing connection between the driving gear and the driven gear. The ball screw drives the connecting rod to move vertically downward through the nut. The connecting rod drives the movable rod to move horizontally through the driving plate. The movable rod cleans the bottom end of the filter plate through the cleaning plate, which helps to avoid clogging of the filter plate during the process of filtering smoke. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a low-temperature denitration device for high-dust flue gas proposed by the present invention;

[0020] Figure 2 For the present invention Figure 1 Rear view in;

[0021] Figure 3 For the present invention Figure 1 The front section view in;

[0022] Figure 4 For the present invention Figure 1 The upper section view in;

[0023] Figure 5This is a schematic diagram of the connection structure of a driving cross plate, a guide rod and a guide slider for a low-temperature denitration device for high-dust flue gas proposed by the present invention;

[0024] Figure 6 For the present invention Figure 5 Bottom view of the .

[0025] In the figure: 1. body; 2. reaction chamber; 3. air inlet pipe; 4. baffle; 5. installation chamber; 6. working box; 7. filter plate; 8. motor; 9. rotating shaft; 10. fan blade; 11. driving cross plate; 12. guide rod; 13. guide slider; 14. traction rod; 15. installation plate; 16. ball screw; 17. nut; 18. driving gear; 19. driven gear; 20. connecting rod; 21. driving plate; 22. movable rod; 23. cleaning plate; 24. driving rod; 25. exhaust pipe. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Reference Figure 1-Figure 6As shown, a low-temperature denitration device for high-dust flue gas comprises a body 1 provided with a sealed door, a reaction chamber 2, an air inlet pipe 3, a baffle 4, an installation chamber 5, a working box 6, a filter plate 7, an exhaust pipe 25, a motor 8, a rotating shaft 9, a fan blade 10 and a stirring mechanism driven by the rotating shaft 9 are arranged on the body 1, and each component is arranged as follows: the reaction chamber 2 is opened in the lower end of the body 1, the air inlet pipe 3 is fixedly connected to the bottom end of the body 1, and the air inlet pipe 3 is communicated with the reaction chamber 2, the baffle 4 is fixedly arranged in the reaction chamber 2, two baffles 4 are arranged, and the two baffles 4 arranged opposite to each other are arranged tilted downward, the flue gas is intercepted by the baffle 4, and the density difference between the gas and impurities in the flue gas is utilized, and the gas in the flue gas will be baffled when contacting the baffle 4, and the impurities contained in part of the flue gas will fall under the action of inertia and gravity, so as to perform the first separation and filtration on the gas and impurities in the flue gas; the installation chamber 5 is opened in the body In the upper end of the body 1, the working box 6 is fixedly arranged in the installation cavity 5, the working box 6 is a cylindrical structure, a catalyst is arranged in the working box 6, the filter plate 7 is fixedly connected to the bottom end of the working box 6, and the working box 6 is connected to the reaction chamber 2 through the filter plate 7; the exhaust pipe 25 is fixedly connected to the working box 6, and the exhaust pipe 25 extends to the outside of the body 1; the motor 8 is fixedly installed on the body 1, the rotating shaft 9 is fixedly connected to the output end of the motor 8, and the rotating shaft 9 extends to the reaction chamber 2 through the installation cavity 5 and the working box 6, the rotating shaft 9 and the working box 6 are concentrically arranged, and the fan blade 10 is fixedly sleeved on the rotating shaft 9 at one end of the reaction chamber 2. It should be noted that the specific structure of the fan blade 10 adopts the fan blade structure matched with the motor, so that the fan blade 10 will guide the flue gas upward regardless of whether it rotates forward or reversely; the stirring mechanism is arranged in the body 1, and the stirring mechanism is used to mix the catalyst with the flue gas and clean the filter plate 7.

[0028] The stirring mechanism includes a driving cross plate 11, a guide rod 12, a guide slider 13, a traction rod 14, a mounting plate 15, a ball screw 16, a nut 17, a driving gear 18, a driven gear 19, a connecting rod 20, a driving plate 21, a movable rod 22, a cleaning plate 23 and a driving rod 24, and each component is arranged as follows: the driving cross plate 11 is fixedly mounted on one end of the rotating shaft 9 located in the working box 6, and the flue gas and the catalyst can be mixed and stirred by the driving cross plate 11, which helps to improve the mixing efficiency of the flue gas and the catalyst; the guide rod 12 is fixedly connected to the working box 6, and the guide slider 13 is slidably mounted on the guide rod 12. A guide through hole for slidingly mounting the guide rod 12 is opened on the guide slider 13, and the guide slider 13 can be guided and limited through the guide through hole, which helps to ensure the stability of the guide slider 13 during movement.

[0029] The two ends of the traction rod 14 drive the cross plate 11 and the guide slider 13 respectively. The upper end of the guide slider 13 is restricted by the traction rod 14, so that the guide slider 13 can only perform radial movement in the horizontal direction. The traction rod 14 pulls the guide slider 13 to perform reciprocating horizontal movement on the guide rod 12, so that the guide slider 13 can push the flue gas and the catalyst horizontally back and forth, thereby further improving the mixing efficiency of the flue gas and the catalyst.

[0030] The mounting plate 15 is fixedly mounted on the machine body 1 , the ball screw 16 is rotatably mounted on the mounting plate 15 via a damping bearing, and the nut 17 is matchedly mounted on the ball screw 16 .

[0031] The driving gear 18 and the driven gear 19 are meshed and connected. The driving gear 18 is fixedly mounted on the rotating shaft 9, and the driven gear 19 is fixedly mounted on the upper end of the ball screw 16. A movable opening for movably accommodating the driven gear 19 is opened on the body 1. The setting of the movable opening provides a movable space for the movement of the driving gear 18 and the driven gear 19.

[0032] The connecting rod 20 is fixedly connected to the nut 17, and the connecting rod 20 is an L-shaped cylindrical structure. The driving plate 21 is slidably connected to the body 1, and the driving plate 21 is fixedly connected to the connecting rod 20. The sliding mode of the driving plate 21 and the body 1 can adopt one of a slide groove or a slide rail:

[0033] When a slide groove is used, the slide groove is opened on the machine body 1, which can reduce the mass of the machine body 1 that needs to be added when the drive plate 21 is set, and help reduce the load generated by adding the drive plate 21;

[0034] When a slide rail is used, the slide rail is fixedly connected to the body 1. By adding a slide rail on the outer wall of the body 1, damage to the original structure of the body 1 can be avoided when the drive plate 21 is set, which helps to ensure that the original structure of the body 1 is not affected by the structure driven by the added drive plate 21.

[0035] The movable rod 22 is slidably mounted on the lower end of the body 1, and one end of the movable rod 22 extends into the reaction chamber 2. The cleaning plate 23 is fixedly connected to one end of the movable rod 22 located in the reaction chamber 2. The upper surface of the cleaning plate 23 is movably abutted against the bottom end of the filter plate 7. The filter plate 7 is continuously cleaned by the cleaning plate 23, which helps to ensure the filtering effect of the filter plate 7. A movable semicircular hole for movably receiving the rotating shaft 9 is provided on the cleaning plate 223. The setting of the movable semicircular hole can avoid motion interference caused by the rotating shaft 9 to the opposite movement of the cleaning plate 23. The two ends of the driving rod 24 are respectively pin-connected to the movable rod 22 and the driving plate 21. The specific model and specifications of the motor 8 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it is not repeated.

[0036] When the present invention is used, the motor 8 is started, the motor 8 drives the rotating shaft 9 to rotate in the forward direction, and the rotating shaft 9 drives the fan blades 10 to rotate; the flue gas enters the reaction chamber 2 through the air inlet pipe 3, and when the flue gas contacts the baffle plate 4, the density difference between the gas and the impurities contained in the flue gas is utilized, and the flue gas will be baffled when contacting the baffle plate 4, and some impurities contained in the flue gas will be intercepted under the action of inertia and gravity, and the flue gas will enter the working box 6 through the filter plate 7 under the guidance of the fan blades 10; the rotating shaft 9 drives the driving cross plate 11 to rotate in the forward direction, and the driving cross plate 11 drives one end of the traction rod 14 to rotate linearly The traction rod 14 drives the guide slider 13 to move radially on the guide rod 12 toward the installation chamber 5, so as to accelerate the mixing efficiency of the flue gas and the catalyst; the rotating shaft 9 drives the driving gear 18 to rotate forward, the driving gear 18 drives the driven gear 19 to rotate forward, the driven gear 19 drives the ball screw 16 to rotate forward, the ball screw 16 drives the nut 17 to move vertically downward, the nut 17 drives the connecting rod 20 to move vertically downward, the connecting rod 20 drives the driving plate 21 to move vertically downward, and the driving plate 21 drives the movable rod 22 to move horizontally toward the reaction chamber 2. The movable rod 22 drives the cleaning plate 23 to move horizontally, and the two cleaning plates 23 move against each other, so that the movable semicircular hole can movably accommodate the rotating shaft 9, and the cleaning plate 23 cleans the bottom end of the filter plate 7; the motor 8 is started, and the motor 8 drives the rotating shaft 9 to rotate in the opposite direction, and the rotating shaft 9 drives the driving cross plate 11 to rotate in the opposite direction, and the driving cross plate 11 drives one end of the traction rod 14 to move linearly, and the traction rod 14 drives the guide slider 13 on the guide rod 12 to move radially in the direction of the rotating shaft 9, so as to accelerate the mixing efficiency of the flue gas and the catalyst; the rotating shaft 9 drives the driving gear 18 to rotate in the opposite direction The driving gear 18 drives the driven gear 19 to rotate in the opposite direction, the driven gear 19 drives the ball screw 16 to rotate in the opposite direction, the ball screw 16 drives the nut 17 to move vertically upward, the nut 17 drives the connecting rod 20 to move vertically upward, the connecting rod 20 drives the driving plate 21 to move vertically upward, the driving plate 21 drives the movable rod 22 to move horizontally toward the outside of the body 1, the movable rod 22 drives the cleaning plate 23 to move horizontally, the two cleaning plates 23 are separated, and the cleaning plate 23 performs secondary cleaning treatment on the bottom end of the filter plate 7; finally, the denitrified flue gas is discharged through the exhaust pipe 25.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A low-temperature denitration device for high-dust flue gas, comprising a body (1) provided with a sealing door, characterized in that: The machine body (1) is provided with: a reaction chamber (2), an air intake pipe (3) and a baffle (4); the reaction chamber (2) is opened in the lower end of the machine body (1); the air intake pipe (3) is fixedly connected to the bottom end of the machine body (1), and the air intake pipe (3) is communicated with the reaction chamber (2); the baffle (4) is fixedly arranged in the reaction chamber (2); an installation chamber (5), a working box (6) and a filter plate (7); the installation chamber (5) is opened in the upper end of the machine body (1); the working box (6) is fixedly arranged in the installation chamber (5); the filter plate (7) is fixedly connected to the bottom end of the working box (6), and the working box (6) is communicated with the reaction chamber (2) through the filter plate (7); and an exhaust pipe (25) , the exhaust pipe (25) is fixedly connected to the working box (6), and the exhaust pipe (25) extends to the outside of the machine body (1); a motor (8), a rotating shaft (9) and a fan blade (10), the motor (8) is fixedly mounted on the machine body (1), the rotating shaft (9) is fixedly connected to the output end of the motor (8), and the rotating shaft (9) extends into the reaction chamber (2) through the mounting chamber (5) and the working box (6), and the fan blade (10) is fixedly sleeved on one end of the rotating shaft (9) located in the reaction chamber (2); a stirring mechanism driven by the rotating shaft (9), the stirring mechanism is arranged in the machine body (1), and the stirring mechanism is used to mix the catalyst and the flue gas and clean the filter plate (7); the working box (1) is fixedly mounted on the working box (6), and the exhaust pipe (25) is fixedly connected to the output end of the motor (8), and the rotating shaft (9) extends into the reaction chamber (2) through the mounting chamber (5) and the working box (6), and the fan blade (10) is fixedly sleeved on one end of the rotating shaft (9) located in the reaction chamber (2); a stirring mechanism driven by the rotating shaft (9), the stirring mechanism is arranged in the machine body (1), and the stirring mechanism is used to mix the catalyst and the flue gas and clean the filter plate (7); The working box (6) is a cylindrical structure. A catalyst is arranged in the working box (6), and the rotating shaft (9) and the working box (6) are arranged concentrically. The stirring mechanism comprises: a driving cross plate (11), the driving cross plate (11) is fixedly sleeved on one end of the rotating shaft (9) located in the working box (6); a guide rod (12) and a guide slider (13), the guide rod (12) is fixedly connected to the working box (6), and the guide slider (13) is slidably sleeved on the guide rod (12); a traction rod (14), the two ends of the traction rod (14) are respectively mounted on the driving cross plate (11) and the guide slider (13); a mounting plate (15), a ball screw (16) and a nut (17). The mounting plate (15) is fixedly mounted on the machine body (1), the ball screw (16) is rotatably mounted on the mounting plate (15) via a damping bearing, and the nut (17) is matched with the ball screw (16); a driving gear (18) and a driven gear (19) meshingly connected to each other, the driving gear (18) is fixedly sleeved on the rotating shaft (9), and the driven gear (19) is fixedly sleeved on the upper end of the ball screw (16); a connecting rod (20) and a driving plate (21), the connecting rod (20) is fixedly connected to the nut (17), the driving plate (21) is slidably connected to the machine body (1), and the driving plate (21) is fixedly connected to the connecting rod (20);A movable rod (22), a cleaning plate (23) and a driving rod (24), wherein the movable rod (22) is slidably mounted on the lower end of the machine body (1), and one end of the movable rod (22) extends into the reaction chamber (2), the cleaning plate (23) is fixedly connected to one end of the movable rod (22) located in the reaction chamber (2), and both ends of the driving rod (24) are respectively pin-connected to the movable rod (22) and the driving plate (21); a guide through hole for slidingly mounting the guide rod (12) is provided on the guide slider (13); a movable opening for movably receiving a driven gear (19) is provided on the machine body (1); the upper surface of the cleaning plate (23) movably abuts against the bottom end of the filter plate (7), and a movable semicircular hole for movably receiving a rotating shaft (9) is provided on the cleaning plate (223). ; 2. A low-temperature denitration device for high-dust flue gas according to claim 1, characterized in that: Two baffles (4) are provided, and the two baffles (4) are arranged facing each other and are arranged to be inclined downward.

3. A low-temperature denitration device for high-dust flue gas according to claim 1, characterized in that: The connecting rod (20) is an L-shaped cylindrical structure.

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