Snocr boost injection mixer
By designing an SNCR enhanced injection mixer with adjustable nozzle angle and mixing mechanism, the problem of uneven gas mixing was solved, the reaction effect between the reducing agent and flue gas was improved, and the denitrification efficiency was increased.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- AKSU SUNSHINE THERMAL POWER CO LTD
- Filing Date
- 2025-07-22
- Publication Date
- 2026-07-07
AI Technical Summary
Existing SNCR injection mixing devices struggle to achieve uniform and efficient gas injection and mixing, resulting in insufficient reaction between the reducing agent and flue gas, which affects denitrification efficiency. Furthermore, the injection range is limited and cannot cover the entire flue gas flow area.
An SNCR enhanced injection mixer was designed. The nozzle is rotated by a gear driven by an electric push rod, which enables flexible adjustment of the nozzle angle. The gas is stirred by a mixing rod in the mixing mechanism to ensure uniform gas mixing and enhance the contact and reaction between the reducing agent and the flue gas.
It achieves uniform gas injection and thorough mixing, improves the reaction effect between the reducing agent and flue gas, and enhances denitrification efficiency and mixing effect.
Smart Images
Figure CN224462526U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gas mixing technology, specifically to an SNCR enhanced jet mixer. Background Technology
[0002] Selective non-catalytic reduction (SNR) technology, as an important flue gas denitrification technology, has been widely used in the industrial field. This technology injects a reducing agent into high-temperature flue gas, causing it to react chemically with nitrogen oxides under catalyst-free conditions, thereby reducing nitrogen oxides into nitrogen and water, achieving the goal of reducing nitrogen oxide emissions.
[0003] Existing SNCR injection mixing devices have some shortcomings in practical applications. Traditional injection devices are difficult to achieve uniform and efficient injection of the gas to be mixed, resulting in insufficient mixing of the reducing agent and flue gas, which affects the denitrification efficiency. Some injection devices have fixed nozzle angles, which cannot be flexibly adjusted according to actual working conditions, resulting in a limited injection range that cannot cover the entire flue gas flow area, causing poor local mixing effect. At the same time, traditional devices cannot fully stir and mix the gas entering the mixer, resulting in insufficient reaction between the reducing agent and flue gas, which in turn reduces the denitrification performance of SNCR technology. Utility Model Content
[0004] The purpose of this invention is to provide an SNCR enhanced injection mixer, which solves the problem in the prior art where the reducing agent and flue gas cannot be fully mixed in order to achieve uniform and efficient injection of the gas to be mixed.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0006] SNCR booster jet mixer includes:
[0007] The mixer body has an air inlet 1 connected to one side, an air inlet 2 connected to the top of the air inlet 1, and an exhaust port connected to one side of the mixer body.
[0008] A mixing mechanism, located inside the mixer body and used to mix the gases inside the mixer body;
[0009] The injection mechanism is located on top of the mixer body and is used to inject the gas to be mixed. The injection mechanism includes an adjustment box fixedly installed on the top of the mixer body. An air storage drum is provided inside the adjustment box. Flexible hoses are connected to both sides of the air storage drum. Nozzles are connected to both ends of the two flexible hoses. An air jet pipe is connected to the top of the air storage drum. An adjustment component is provided between the nozzles and the adjustment box. A drive component is provided on one side of the adjustment box.
[0010] Preferably, the adjustment assembly includes an adjustment seat fixedly installed on the outer wall of the nozzle, with rotating shafts fixedly installed on both sides of the adjustment seat, both rotating shafts being rotatably connected to the interior of the adjustment box, and connecting plates fixedly installed on both sides of the air storage drum, both connecting plates being fixedly connected to the interior of the adjustment box.
[0011] Preferably, the drive assembly includes two gears disposed on one side of the adjustment box, wherein two rotating shafts extend to one side of the adjustment box and are fixedly connected to the gears, a protective cover is fixedly installed on one side of the adjustment box, two fixed grooves for the gears to rotate are opened inside the protective cover, and two rack plates are movably installed on the top of the protective cover, the two rack plates meshing with the two gears.
[0012] Preferably, the drive assembly further includes two electric push rods fixedly installed on the top of the protective cover. A movable plate is fixedly installed on the top of each of the two rack plates. The movable plate extends to the top of the protective cover and is fixedly installed with a movable block. The telescopic ends of the two electric push rods are respectively fixedly connected to the two movable blocks. Two limiting grooves for the movable plates to move are opened on the top of the protective cover. An opening groove for the rack plates to move is opened at the bottom of the two limiting grooves.
[0013] Preferably, the mixing mechanism includes a first bearing and a second bearing disposed on both sides inside the mixer body. A sealing cover is fixedly installed on one side of the second bearing, and a sealing sleeve is installed on the outer wall of the sealing cover. The sealing sleeve matches the mixer body. A control handle is fixedly installed on one side of the sealing cover. Multiple reinforcing rods are fixedly installed on the outer wall of the first bearing. The multiple reinforcing rods are fixedly connected to the interior of the mixer body. A mixing shaft is rotatably installed between the first bearing and the second bearing. The mixing shaft extends to one side of the second bearing and is fixedly connected to the sealing cover.
[0014] Preferably, the mixing mechanism further includes multiple mixing rods fixedly installed on the outer wall of the mixing shaft, multiple evenly distributed linkage plates fixedly installed on the outer wall of the mixer body, bolts fixedly installed on one side of each linkage plate, multiple fixing blocks corresponding to the linkage plates fixedly installed on the outer wall of the sealing cover, and nuts screwed between the bolts and the fixing blocks.
[0015] Compared with the prior art, the beneficial effects achieved by this utility model are:
[0016] 1. This utility model, through the setting of the spray mechanism, uses an electric push rod to drive the rack plate to move, thereby driving the gear to rotate, causing the nozzle to rotate around the rotation axis, realizing flexible adjustment of the nozzle angle. The spray angle and range of the nozzle can be adjusted according to the actual working conditions, ensuring that the gas to be mixed can be evenly sprayed into the interior of the mixer body, improving the mixing effect of the reducing agent and flue gas, thereby effectively improving the denitrification efficiency.
[0017] 2. Through the design of the mixing mechanism, when the mixed gas enters the mixer body, the gas will come into contact with the mixing rod, causing the mixing rod to rotate. Through the rotation of the mixing rod, the gas inside the mixer body can be effectively mixed, thereby allowing the reducing agent and flue gas to fully contact and react, greatly improving the mixing effect and denitrification performance. At the same time, multiple reinforcing rods fix the bearing to the inside of the mixer body, enhancing the stability of the mixing shaft rotation and further ensuring the mixing effect. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a cross-sectional view of the entire utility model;
[0020] Figure 3 This is a side view of the entire utility model;
[0021] Figure 4 This is a schematic diagram of the structure of the hybrid mechanism of this utility model;
[0022] Figure 5 This is a schematic diagram of the spraying mechanism of this utility model;
[0023] Figure 6 This is a schematic diagram of the structure of the protective cover of this utility model;
[0024] Figure 7 This is a schematic diagram of the structure of the drive component of this utility model.
[0025] The components include: 1. Mixer body; 2. Injection mechanism; 3. Mixing mechanism; 4. Inlet 1; 5. Inlet 2; 6. Exhaust port;
[0026] 21. Jet pipe; 22. Adjustment box; 23. Nozzle; 24. Electric push rod; 25. Protective cover; 26. Limiting groove; 27. Connecting plate; 28. Rotating shaft; 29. Air storage drum; 210. Gear; 211. Rack plate; 212. Moving plate; 213. Moving block;
[0027] 31. Control handle; 32. Mixing rod; 33. Mixing shaft; 34. Bearing 1; 35. Sealing sleeve; 36. Bolt; 37. Nut; 38. Fixing block; 39. Linkage plate; 310. Bearing 2; 311. Reinforcing rod. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] Please refer to Figure 1 SNCR enhanced injection mixer, including:
[0030] The mixer body 1 has an air inlet 4 connected to one side, an air inlet 5 connected to the top of the air inlet 4, and an exhaust port 6 connected to one side of the mixer body 1.
[0031] refer to Figure 5 , Figure 6 and Figure 7 The injection mechanism 2 is located at the top of the mixer body 1 and is used to inject the gas to be mixed. The injection mechanism 2 includes an adjustment box 22 fixedly installed at the top of the mixer body 1. An air storage drum 29 is provided inside the adjustment box 22. Flexible hoses are connected to both sides of the air storage drum 29, and nozzles 23 are connected to both ends of the two flexible hoses. An air jet pipe 21 is connected to the top of the air storage drum 29. An adjustment assembly is provided between the nozzles 23 and the adjustment box 22. A drive assembly is provided on one side of the adjustment box 22. The adjustment assembly includes an adjustment seat fixedly installed on the outer wall of the nozzles 23. Rotating shafts 28 are fixedly installed on both sides of the adjustment seat. Each rotating shaft 28 is rotatably connected to the inside of the regulating box 22. Connecting plates 27 are fixedly installed on both sides of the air drum 29. Both connecting plates 27 are fixedly connected to the inside of the regulating box 22. The drive assembly includes two gears 210 disposed on one side of the regulating box 22. The two rotating shafts 28 extend to one side of the regulating box 22 and are fixedly connected to the gears 210. A protective cover 25 is fixedly installed on one side of the regulating box 22. The inside of the protective cover 25 has two fixed grooves for the gears 210 to rotate. Two rack plates 211 are movably installed on the top of the protective cover 25. The two rack plates 211 mesh with the two gears 210.
[0032] Furthermore, the drive assembly also includes two electric push rods 24 fixedly mounted on the top of the protective cover 25. A movable plate 212 is fixedly mounted on the top of each of the two rack plates 211. The movable plate 212 extends to the top of the protective cover 25 and is fixedly mounted with a movable block 213. The telescopic ends of the two electric push rods 24 are respectively fixedly connected to the two movable blocks 213. Two limiting grooves 26 for the movable plates 212 to move are provided on the top of the protective cover 25, and openings for the rack plates 211 to move are provided at the bottom of the two limiting grooves 26. Based on this, as... Figure 6 It can be seen that the two electric push rods 24 can be controlled independently to achieve differentiated angle adjustment of the nozzle 23;
[0033] For further reference Figure 2 , Figure 3 and Figure 4 The mixing mechanism 3 includes a first bearing 34 and a second bearing 310 disposed on both sides inside the mixer body 1. A sealing cover is fixedly installed on one side of the second bearing 310. A sealing sleeve 35 is installed on the outer wall of the sealing cover. The sealing sleeve 35 matches the mixer body 1. A control handle 31 is fixedly installed on one side of the sealing cover. Multiple reinforcing rods 311 are fixedly installed on the outer wall of the first bearing 34. The multiple reinforcing rods 311 are fixedly connected to the interior of the mixer body 1. A mixing shaft 33 is rotatably installed between the first bearing 34 and the second bearing 310. The mixing shaft 33 extends to one side of the second bearing 310 and is fixedly connected to the sealing cover.
[0034] The sealing sleeve 35 is made of high-temperature resistant rubber and is interference-fitted between the sealing cover and the mixer body 1.
[0035] Furthermore, the mixing mechanism 3 also includes multiple mixing rods 32 fixedly installed on the outer wall of the mixing shaft 33, multiple evenly distributed linkage plates 39 fixedly installed on the outer wall of the mixer body 1, bolts 36 fixedly installed on one side of each linkage plate 39, multiple fixing blocks 38 corresponding to the linkage plates 39 fixedly installed on the outer wall of the sealing cover, and nuts 37 screwed between the multiple bolts 36 and the fixing blocks 38.
[0036] The overall working principle of this utility model is as follows:
[0037] Flue gas containing nitrogen oxides enters the mixer body 1 through inlet 4, while reducing agent gas enters through inlet 5. Separate gas intake helps to accurately control the flow rate and ratio of different gases according to actual working conditions.
[0038] The gas to be mixed first enters the gas storage drum 29 through the jet pipe 21. The gas storage drum 29 serves to store and buffer the gas, ensuring a stable supply of gas to the nozzle 23. The electric push rod 24 drives the moving block 213 to move, which in turn drives the moving plate 212 to move. The limiting groove 26 makes the moving plate 212 more stable during movement. Since the rack plate 211 meshes with the gear 210, the movement of the moving plate 212 drives the rack plate 211 to move. The movement of the rack plate 211 drives the gear 210 to rotate, which in turn drives the rotating shaft 28 to rotate, thus enabling the nozzle 23 to rotate around the rotating shaft 28. The extension and retraction control of the electric push rod 24 can flexibly adjust the spray angle of the nozzle 23, allowing it to evenly spray the gas into different positions inside the mixer body 1 according to the actual working conditions, expanding the spray range and improving the uniformity of gas mixing.
[0039] The gas entering the mixer body 1 has a certain flow rate and pressure. Through the action of the flow rate and pressure, it comes into contact with the mixing rods 32 that are circumferentially distributed on the outer wall of the mixing shaft 33. The force generated by the gas impacting the mixing rods 32 forms a torque and is transmitted to the mixing shaft 33, causing the mixing shaft 33 to rotate under the support of the bearings 34 and 310 at both ends and the stabilizing action of the reinforcing rods 311. The rotating mixing shaft 33 drives the mixing rods 32 to rotate, stirring the gas, breaking the gas laminar flow, making the gas evenly distributed, and increasing the chances of molecular collision and mixing. As long as the gas continues to enter, this mixing process continues, thereby improving the overall mixing effect.
[0040] The nut 37 and bolt 36 allow the mixing shaft 33 to be removed from inside the mixer body 1, making it easier to maintain.
[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An SNCR enhanced injection mixer, characterized in that, include: The mixer body (1) has an air inlet 1 (4) connected to one side, an air inlet 2 (5) connected to the top of the air inlet 1 (4), and an exhaust port (6) connected to one side of the mixer body (1). A mixing mechanism (3) is located inside the mixer body (1) and is used to mix the gas inside the mixer body (1); The injection mechanism (2) is located on the top of the mixer body (1) and is used to inject the gas to be mixed. The injection mechanism (2) includes an adjustment box (22) fixedly installed on the top of the mixer body (1). An air storage drum (29) is provided inside the adjustment box (22). The air storage drum (29) is connected to both sides of the air storage drum (29). Both ends of the two hoses are connected to nozzles (23). An air jet pipe (21) is connected to the top of the air storage drum (29). An adjustment component is provided between the nozzle (23) and the adjustment box (22). A drive component is provided on one side of the adjustment box (22).
2. The SNCR enhanced jet mixer according to claim 1, characterized in that: The adjustment assembly includes an adjustment seat fixedly installed on the outer wall of the nozzle (23). Rotating shafts (28) are fixedly installed on both sides of the adjustment seat. Both rotating shafts (28) are rotatably connected to the inside of the adjustment box (22). Connecting plates (27) are fixedly installed on both sides of the air storage drum (29). Both connecting plates (27) are fixedly connected to the inside of the adjustment box (22).
3. The SNCR booster jet mixer according to claim 1, characterized in that: The drive assembly includes two gears (210) disposed on one side of the adjustment box (22), wherein two rotating shafts (28) extend to one side of the adjustment box (22) and are fixedly connected to the gears (210). A protective cover (25) is fixedly installed on one side of the adjustment box (22). Two fixed grooves for the gears (210) to rotate are opened inside the protective cover (25), and two rack plates (211) are movably installed on the top of the protective cover (25). The two rack plates (211) mesh with the two gears (210).
4. The SNCR booster jet mixer according to claim 3, characterized in that: The drive assembly also includes two electric push rods (24) fixedly installed on the top of the protective cover (25). The top of each of the two rack plates (211) is fixedly installed with a movable plate (212). The movable plate (212) extends to the top of the protective cover (25) and is fixedly installed with a movable block (213). The telescopic ends of the two electric push rods (24) are respectively fixedly connected to the two movable blocks (213). The top of the protective cover (25) is provided with two limiting grooves (26) for the movable plate (212) to move. The bottom of the two limiting grooves (26) is provided with an opening groove for the rack plate (211) to move.
5. The SNCR enhanced jet mixer according to claim 1, characterized in that: The mixing mechanism (3) includes a bearing 1 (34) and a bearing 2 (310) disposed on both sides inside the mixer body (1). A sealing cover is fixedly installed on one side of the bearing 2 (310). A sealing sleeve (35) is installed on the outer wall of the sealing cover. The sealing sleeve (35) matches the mixer body (1). A control handle (31) is fixedly installed on one side of the sealing cover. A plurality of reinforcing rods (311) are fixedly installed on the outer wall of the bearing 1 (34). The plurality of reinforcing rods (311) are fixedly connected to the interior of the mixer body (1). A mixing shaft (33) is rotatably installed between the bearing 1 (34) and the bearing 2 (310). The mixing shaft (33) extends to one side of the bearing 2 (310) and is fixedly connected to the sealing cover.
6. The SNCR booster jet mixer according to claim 5, characterized in that: The mixing mechanism (3) also includes a plurality of mixing rods (32) fixedly installed on the outer wall of the mixing shaft (33). A plurality of evenly distributed linkage plates (39) are fixedly installed on the outer wall of the mixer body (1). Bolts (36) are fixedly installed on one side of each linkage plate (39). A plurality of fixing blocks (38) corresponding to the linkage plates (39) are fixedly installed on the outer wall of the sealing cover. Nuts (37) are screwed between the bolts (36) and the fixing blocks (38).