Flue gas flow mixing device capable of accurately spraying ammonia
By designing a flue gas mixing device including a servo motor, ammonia storage tank, hollow shaft, exhaust tank and fan blade, the problem of insufficient mixing of ammonia and flue gas is solved, efficient mixing and denitrification are achieved, and the stability and environmental protection effect of the equipment are improved.
Patent Information
- Application Number
- CN202420826010.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-21
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-04-21
AI Technical Summary
In the existing flue gas denitrification technology, the mixture of ammonia and flue gas is insufficient, resulting in ammonia waste and environmental pollution.
A flue gas mixing device including a servo motor, ammonia storage tank, hollow shaft, exhaust groove and fan blade is designed. The servo motor drives the rotation of the hollow shaft and fan blade, and uses the combination of centrifugal force and sealing plate to achieve efficient mixing of ammonia and flue gas in the mixed flow box.
It realizes efficient mixing of ammonia and flue gas, improves denitrification efficiency, increases the practicality and stability of the equipment, and effectively reduces the emission concentration of particulate matter and protects the environment.
Smart Images
Figure CN222586083U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of flue gas denitration, in particular to a flue gas mixing flow device capable of accurately spraying ammonia. Background Art
[0002] The flue gas mixing device with precise ammonia injection is mainly used in industrial fields that require flue gas denitrification, especially in the power, chemical, steel and other industries. The device can also be used in other industrial scenarios that require flue gas denitrification, such as glass manufacturing, cement production, etc.
[0003] Ammonia denitrification technology effectively converts NOx in flue gas into harmless substances by utilizing the chemical reaction between ammonia and nitrogen oxides, thereby achieving the purpose of reducing atmospheric pollutant emissions.
[0004] In the process of ammonia denitrification, ammonia and flue gas need to be fully integrated. If the two are not fully integrated during the mixing process, it will lead to waste of ammonia and pollution to the environment. Therefore, in order to solve the above problem, a flue gas mixing device that can accurately spray ammonia is proposed. Utility Model Content
[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background technology, the utility model proposes a flue gas mixing device that can accurately spray ammonia.
[0006] The technical solution adopted by the utility model to solve its technical problems is: the flue gas mixing device capable of accurately spraying ammonia described in the utility model comprises a mixing box body; a servo motor is fixedly connected to the bottom of the outer wall of the mixing box body; an air outlet pipe is fixedly connected to the outer wall of the servo motor; an ammonia storage tank is fixedly connected to the top of the outer wall of the servo motor; a hollow rotating shaft is fixedly connected to the output end of the servo motor; two pairs of exhaust grooves are opened on the side wall of the hollow rotating shaft; a plurality of fan blades are fixedly connected to the outer wall of the hollow rotating shaft; an air supply pipe is fixedly connected to the top of the outer wall of the ammonia storage tank; the air supply pipe is rotatably connected to the hollow rotating shaft; two pairs of fixing blocks are fixedly connected to the outer wall of the hollow rotating shaft; a connecting rope is fixedly connected to the bottom of the outer wall of the fixing block; a counterweight is fixedly connected to the side wall of the connecting rope; a plurality of fixing grooves are fixedly connected to the outer wall of the hollow rotating shaft; a cover plate is fixedly connected to the top of the outer wall of the fixing groove; a sealing plate is fixedly connected to the bottom of the outer wall of the connecting rope; the counterweight is in contact with the cover plate; and the inner wall of the fixing groove is in sliding contact with the sealing plate.
[0007] Preferably, a filter plate is fixedly connected to the inner wall of the air outlet pipe; a fixed shaft is fixedly connected to the inner wall of the filter plate; an arc plate is fixedly connected to the outer wall of the fixed shaft; a plurality of bristles are fixedly connected to the side wall of the arc plate; the bristles are in contact with the filter plate; a collection box is fixedly connected to the bottom of the outer wall of the air outlet pipe; and the inner wall of the collection box is in sliding contact with a collection box.
[0008] Preferably, the outer wall of the collection box is fixedly connected to a fixing plate; the inner wall of the fixing plate is in sliding contact with a connecting column; the top of the outer wall of the fixing plate is fixedly connected to a first spring; the top of the outer wall of the connecting column is fixedly connected to an extrusion plate; the outer wall of the first spring is fixedly connected to an extrusion plate; the connecting column is in contact with the collection box; the connecting column is in contact with the collection box.
[0009] Preferably, a pair of dampers are fixed to the bottom of the outer wall of the cover plate; a sealing plate is fixed to the bottom of the outer wall of the damper; a pair of second springs are fixed to the bottom of the outer wall of the cover plate; a sealing plate is fixed to the outer wall of the second spring; the second spring is arranged on the outer wall of the damper; the second spring does not contact the damper; the second spring does not contact the fixing groove.
[0010] Preferably, a plurality of balls are provided on the side wall of the collection box; the balls rotate on the side wall of the collection box; the balls cannot be separated from the collection box; and the balls are in contact with the collection box.
[0011] Preferably, a diverter column is fixedly connected to the bottom of the inner wall of the hollow rotating shaft; the diverter column has the same height as the exhaust groove; the diverter column is arranged directly below the gas pipe; the diverter column has the same center point as the gas pipe; and the diverter column is conical in shape.
[0012] Preferably, an observation plate is fixedly connected to the outer side wall of the mixed flow box body; the observation plate is made of a transparent material; and the observation plate is arranged at a relatively central position of the side wall of the servo motor.
[0013] Beneficial effects of the utility model:
[0014] 1. The utility model provides a flue gas mixing device that can accurately spray ammonia. By setting a sealing plate, an exhaust groove and a fan blade, the ammonia can fully contact with the flue gas inside the mixing box body when the equipment is running, so as to achieve efficient mixing of ammonia and flue gas, improve the denitrification efficiency, and increase the practicability and stability of the equipment.
[0015] 2. The utility model provides a flue gas mixing device that can accurately spray ammonia. Through the filter plate and bristles, the emission concentration of particulate matter is effectively reduced, the protection of the environment is increased, and the maintenance of the equipment is convenient for the staff. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0017] Figure 1 It is a three-dimensional diagram of the utility model;
[0018] Figure 2It is a structural schematic diagram of the exhaust groove in the utility model;
[0019] Figure 3 It is a structural schematic diagram of the connecting rope in the utility model;
[0020] Figure 4 It is a cross-sectional view of the exhaust pipe in the utility model;
[0021] Figure 5 It is a three-dimensional diagram of the diverter column in the utility model;
[0022] Figure 6 It is a three-dimensional diagram of the ball in the utility model.
[0023] Legend:
[0024] 1. Mixed flow box body; 11. Servo motor; 12. Exhaust pipe; 13. Ammonia storage tank; 14. Hollow shaft; 15. Exhaust groove; 16. Fan blade; 17. Air pipe; 18. Fixed block; 19. Connecting rope; 10. Counterweight block; 101. Fixed groove; 102. Cover plate; 103. Sealing plate; 2. Filter plate; 21. Fixed shaft; 22. Arc plate; 23. Brush; 24. Collecting box; 25. Collecting box; 3. Fixed plate; 31. Connecting column; 32. First spring; 33. Extrusion plate; 4. Damper; 41. Second spring; 5. Ball; 6. Diverter column; 7. Observation plate. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] Specific examples are given below.
[0027] See also Figure 1 - Figure 6The utility model provides a flue gas mixing device capable of accurately spraying ammonia, comprising a mixing box body 1; a servo motor 11 is fixedly connected to the bottom of the outer wall of the mixing box body 1; an air outlet pipe 12 is fixedly connected to the outer wall of the servo motor 11; an ammonia storage tank 13 is fixedly connected to the top of the outer wall of the servo motor 11; a hollow rotating shaft 14 is fixedly connected to the output end of the servo motor 11; two pairs of exhaust grooves 15 are opened on the side wall of the hollow rotating shaft 14; a plurality of fan blades 16 are fixedly connected to the outer wall of the hollow rotating shaft 14; an air delivery pipe 17 is fixedly connected to the top of the outer wall of the ammonia storage tank 13; The air pipe 17 is rotatably connected to the hollow rotating shaft 14; two pairs of fixed blocks 18 are fixedly connected to the outer wall of the hollow rotating shaft 14; a connecting rope 19 is fixedly connected to the bottom of the outer wall of the fixed block 18; a counterweight 10 is fixedly connected to the side wall of the connecting rope 19; a plurality of fixed grooves 101 are fixedly connected to the outer wall of the hollow rotating shaft 14; a cover plate 102 is fixedly connected to the top of the outer wall of the fixing groove 101; a sealing plate 103 is fixedly connected to the bottom of the outer wall of the connecting rope 19; the counterweight 10 is in contact with the cover plate 102; the inner wall of the fixing groove 101 is in sliding contact with the sealing plate 103. When the equipment is working, the servo motor 11 rotates, driving the hollow shaft 14 and the fan blades 16 to rotate, and the ammonia storage tank 13 transports the internal ammonia to the inside of the hollow shaft 14 through the gas pipe 17. When the hollow shaft 14 rotates, due to the action of centrifugal force, the counterweight 10 moves outward, and the sealing plate 103 is restricted by the fixed groove 101, so the sealing plate 103 can only move upward. At this time, the exhaust groove 15 is in an open and closed state, and the ammonia flows into the mixed flow box body 1 through the exhaust groove 15. The fan blades 16 fully mix the ammonia with the flue gas inside the mixed flow box body 1. When the servo motor 11 stops rotating, the sealing plate 103 falls again due to gravity and seals the exhaust groove 15. Through the provided sealing plate 103, exhaust groove 15 and fan blades 16, the ammonia can be fully in contact with the flue gas inside the mixed flow box body 1 when the equipment is running, so as to achieve efficient mixing of ammonia and flue gas, improve denitrification efficiency, and increase the practicability and stability of the equipment.
[0028] Further, such as Figure 4 As shown, the inner wall of the outlet pipe 12 is fixedly connected to a filter plate 2; the inner wall of the filter plate 2 is fixedly connected to a fixed shaft 21; the outer wall of the fixed shaft 21 is fixedly connected to an arc plate 22; the side wall of the arc plate 22 is fixedly connected to a plurality of bristles 23; the bristles 23 are in contact with the filter plate 2; the bottom of the outer wall of the outlet pipe 12 is fixedly connected to a collection box 24; the inner wall of the collection box 24 is in sliding contact with a collection box 25. When the equipment is working, the gas mixture flows outward through the outlet pipe 12, and the filter plate 2 blocks the particulate matter generated in the process of denitration at the side wall of the filter plate 2. When the gas passes through the arc plate 22, the arc plate 22 rotates slowly, and then the bristles 23 sweep the particles on the side wall of the filter plate 2 into the inside of the collection box 25. The filter plate 2 and the bristles 23 are set to effectively reduce the emission concentration of particulate matter, increase the protection of the environment, and facilitate the maintenance of the equipment by the staff.
[0029] Further, such as Figure 4 As shown, the outer wall of the collection box 24 is fixed with a fixing plate 3; the inner wall of the fixing plate 3 is in sliding contact with a connecting column 31; the top of the outer wall of the fixing plate 3 is fixed with a first spring 32; the top of the outer wall of the connecting column 31 is fixed with an extrusion plate 33; the outer wall of the first spring 32 is fixed with an extrusion plate 33; the connecting column 31 is in contact with the collection box 25; the connecting column 31 is in contact with the collection box 24. Pulling the extrusion plate 33 makes the connecting column 31 move upward, at which time the collection box 25 can be separated from the collection box 24. When the extrusion plate 33 is released, the first spring 32 pulls the extrusion plate 33 and the connecting column 31 to reset, at which time the connecting column 31 is in contact with the collection box 25, and the collection box 25 cannot be separated from the collection box 24. The connecting column 31 and the first spring 32 are provided to fix the collection box 25 under normal circumstances, reduce the direct escape of particles, and at the same time, when the staff has finished cleaning the collection box 25, it is convenient for the staff to re-fix the collection box 25, reducing the difficulty of the staff to use the equipment.
[0030] Further, such as Figure 3 As shown, a pair of dampers 4 are fixed to the bottom of the outer wall of the cover plate 102; a sealing plate 103 is fixed to the bottom of the outer wall of the damper 4; a pair of second springs 41 are fixed to the bottom of the outer wall of the cover plate 102; the outer wall of the second spring 41 is fixed to the sealing plate 103; the second spring 41 is arranged on the outer wall of the damper 4; the second spring 41 does not contact the damper 4; the second spring 41 does not contact the fixing groove 101. When the equipment is working, the sealing plate 103 will move. When the sealing plate 103 moves upward, the second spring 41 is squeezed, so that the sealing plate 103 cannot directly contact the cover plate 102. When the sealing plate 103 moves downward, the situation of the sealing plate 103 falling rapidly due to gravity is reduced. By setting the damper 4 and the second spring 41, the protection of the cover plate 102 and the connecting rope 19 is increased, the collision caused by rapid movement is reduced, the probability of equipment failure is reduced, and the use of the equipment by the staff is convenient.
[0031] Further, such as Figure 6 As shown, the side wall of the collection box 25 is provided with a plurality of balls 5; the balls 5 rotate on the side wall of the collection box 25; the balls 5 cannot be separated from the collection box 25; the balls 5 are in contact with the collection box 24. When the device is working, the collection box 25 will rub against the hollow shaft 14, and the sliding friction between the collection box 25 and the collection box 24 is transformed into rolling friction by the balls 5, so that the staff can take and put the collection box 25 more smoothly, and reduce the difficulty of the staff to use the device.
[0032] Further, such as Figure 5As shown, a diverter column 6 is fixedly connected to the bottom of the inner wall of the hollow rotating shaft 14; the diverter column 6 has the same height as the exhaust groove 15; the diverter column 6 is arranged directly below the gas delivery pipe 17; the diverter column 6 has the same center point as the gas delivery pipe 17; and the diverter column 6 is conical in shape. When the equipment is working, the gas delivery pipe 17 discharges ammonia into the hollow rotating shaft 14, and the diverter column 6 is arranged to allow the ammonia above to move more evenly to the surroundings, further increasing the uniformity of the mixing of ammonia and flue gas.
[0033] Further, such as Figure 1 As shown, an observation plate 7 is fixedly connected to the outer wall of the mixing box body 1; the observation plate 7 is made of transparent material; and the observation plate 7 is arranged at a relatively central position of the side wall of the servo motor 11. When the equipment is working, ammonia and flue gas will be continuously mixed inside the mixing box body 1. The observation plate 7 is arranged to facilitate the staff to understand the internal situation of the equipment, so that the staff can timely understand the internal situation and debug the equipment.
[0034] Working principle: When the equipment is working, the servo motor 11 rotates, driving the hollow shaft 14 and the fan blades 16 to rotate. The ammonia storage tank 13 transports the internal ammonia to the inside of the hollow shaft 14 through the gas pipe 17. When the hollow shaft 14 rotates, due to the centrifugal force, the counterweight 10 moves outward, and the sealing plate 103 is restricted by the fixed groove 101, so the sealing plate 103 can only move upward. At this time, the exhaust groove 15 is in an open and closed state, and the ammonia flows into the inside of the mixed flow box body 1 through the exhaust groove 15. The fan blades 16 fully mix the ammonia with the flue gas inside the mixed flow box body 1. When the servo motor 11 stops rotating, the sealing plate 103 falls again due to gravity, and the exhaust groove 15 is sealed. Through the provided sealing plate 103, exhaust groove 15 and fan blades 16, the equipment is running. When the ammonia gas is in full contact with the flue gas inside the mixing box body 1, the ammonia gas and the flue gas can be efficiently mixed, the denitration efficiency can be improved, and the practicability and stability of the equipment can be increased. When the equipment is working, the gas mixture flows outward through the outlet pipe 12, and the filter plate 2 blocks the particulate matter generated in the process of denitration on the side wall of the filter plate 2. When the gas passes through the curved plate 22, the curved plate 22 will rotate slowly, and then the bristles 23 will sweep the particles on the side wall of the filter plate 2 into the collecting box 25. The filter plate 2 and the bristles 23 are set to effectively reduce the emission concentration of particulate matter, increase environmental protection, and facilitate the maintenance of the equipment by the staff. The squeezing plate 33 is pulled to move the connecting column 31 upward. At this time, the collecting box 25 can be separated from the collecting box 24, and the squeezing plate 33 is released. The first spring 32 pulls the extrusion plate 33 and the connecting column 31 to reset. At this time, the connecting column 31 contacts the collection box 25, and the collection box 25 cannot be separated from the collection box 24. The collection box 25 is fixed under normal circumstances by the provided connecting column 31 and the first spring 32, which reduces the direct escape of particles. At the same time, when the staff has cleaned the collection box 25, it is convenient for the staff to re-fix the collection box 25, which reduces the difficulty of the staff to use the equipment. When the equipment is working, the sealing plate 103 will move. When the sealing plate 103 moves upward, the second spring 41 is squeezed, so that the sealing plate 103 cannot directly contact the cover plate 102. When the sealing plate 103 moves downward, the rapid decline of the sealing plate 103 due to gravity is reduced. In this case, the damper 4 and the second spring 41 are provided to increase the protection of the cover plate 102 and the connecting rope 19, reduce the collision caused by rapid movement, reduce the probability of equipment failure, and facilitate the use of the equipment by the staff. When the equipment is working, the collection box 25 will rub against the hollow shaft 14. The ball 5 is provided to change the sliding friction between the collection box 25 and the collection box 24 into rolling friction, which is convenient for the staff to take and put the collection box 25, making the taking and putting process smoother and reducing the difficulty of the staff to use the equipment. When the equipment is working, the gas pipe 17 discharges ammonia into the inside of the hollow shaft 14, and the diverter column 6 is provided to make the ammonia above move more evenly to the surroundings, further increasing the uniformity of the mixing of ammonia and flue gas.When the equipment is working, ammonia and flue gas will be mixed continuously inside the mixing box body 1. The observation plate 7 is provided to facilitate the staff to understand the internal situation of the equipment, so that the staff can timely understand the internal situation and debug the equipment.
[0035] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.
Claims
1. A flue gas mixing device capable of accurately spraying ammonia, comprising a mixing box body (1); characterized in that: A servo motor (11) is fixedly connected to the bottom of the outer wall of the mixed flow box body (1); an air outlet pipe (12) is fixedly connected to the outer wall of the servo motor (11); an ammonia storage tank (13) is fixedly connected to the top of the outer wall of the servo motor (11); a hollow rotating shaft (14) is fixedly connected to the output end of the servo motor (11); two pairs of exhaust grooves (15) are formed on the side wall of the hollow rotating shaft (14); a plurality of fan blades (16) are fixedly connected to the outer wall of the hollow rotating shaft (14); an air supply pipe (17) is fixedly connected to the top of the outer wall of the ammonia storage tank (13); the air supply pipe (17) is rotatably connected to the hollow rotating shaft (14) ; Two pairs of fixing blocks (18) are fixedly connected to the outer wall of the hollow rotating shaft (14); a connecting rope (19) is fixedly connected to the bottom of the outer wall of the fixing block (18); a counterweight block (10) is fixedly connected to the side wall of the connecting rope (19); a plurality of fixing grooves (101) are fixedly connected to the outer wall of the hollow rotating shaft (14); a cover plate (102) is fixedly connected to the top of the outer wall of the fixing groove (101); a sealing plate (103) is fixedly connected to the bottom of the outer wall of the connecting rope (19); the counterweight block (10) is in contact with the cover plate (102); and the inner wall of the fixing groove (101) is in sliding contact with the sealing plate (103).
2. A flue gas mixing device capable of accurately spraying ammonia according to claim 1, characterized in that: The inner wall of the air outlet pipe (12) is fixedly connected to a filter plate (2); the inner wall of the filter plate (2) is fixedly connected to a fixed shaft (21); the outer wall of the fixed shaft (21) is fixedly connected to an arc plate (22); the side wall of the arc plate (22) is fixedly connected to a plurality of bristles (23); the bristles (23) are in contact with the filter plate (2); the bottom of the outer wall of the air outlet pipe (12) is fixedly connected to a collection box (24); the inner wall of the collection box (24) is in sliding contact with a collection box (25).
3. A flue gas mixing device capable of accurately spraying ammonia according to claim 2, characterized in that: The outer wall of the collection box (24) is fixedly connected to a fixing plate (3); the inner wall of the fixing plate (3) is in sliding contact with a connecting column (31); the top of the outer wall of the fixing plate (3) is fixedly connected to a first spring (32); the top of the outer wall of the connecting column (31) is fixedly connected to an extrusion plate (33); the outer wall of the first spring (32) is fixedly connected to an extrusion plate (33); the connecting column (31) is in contact with the collection box (25); the connecting column (31) is in contact with the collection box (24).
4. The flue gas mixing device capable of accurately spraying ammonia according to claim 1, characterized in that: A pair of dampers (4) are fixedly connected to the bottom of the outer wall of the cover plate (102); a sealing plate (103) is fixedly connected to the bottom of the outer wall of the damper (4); a pair of second springs (41) are fixedly connected to the bottom of the outer wall of the cover plate (102); the outer wall of the second spring (41) is fixedly connected to the sealing plate (103); the second spring (41) is arranged on the outer wall of the damper (4); the second spring (41) does not contact the damper (4); the second spring (41) does not contact the fixing groove (101).
5. The flue gas mixing device capable of accurately spraying ammonia according to claim 2, characterized in that: The side wall of the collection box (25) is provided with a plurality of balls (5); the balls (5) rotate on the side wall of the collection box (25); the balls (5) cannot be separated from the collection box (25); and the balls (5) are in contact with the collection box (24).
6. The flue gas mixing device capable of accurately spraying ammonia according to claim 1, characterized in that: A diverter column (6) is fixedly connected to the bottom of the inner wall of the hollow rotating shaft (14); the diverter column (6) has the same height as the exhaust groove (15); the diverter column (6) is arranged directly below the gas delivery pipe (17); the center point of the diverter column (6) and the gas delivery pipe (17) is the same; the diverter column (6) is conical in shape.
7. The flue gas mixing device capable of accurately spraying ammonia according to claim 1, characterized in that: An observation plate (7) is fixedly connected to the outer side wall of the mixed flow box body (1); the observation plate (7) is made of a transparent material; and the observation plate (7) is arranged at a relatively central position of the side wall of the servo motor (11).