Denitration ammonia gas and air mixing device
The ammonia-air mixing device in SCR systems addresses inefficiencies by enabling rapid mixing and uniform distribution of ammonia gas, while allowing for easy maintenance through a detachable design.
Patent Information
- Application Number
- CN202422209731.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-10
AI Technical Summary
The existing denitrification ammonia air mixing device has low mixing efficiency, cannot be quickly combined, is inconvenient to disassemble, is difficult to repair, and is unevenly diverted and transported with mixed ammonia.
A device including a support pipe, a mixing pipe, a fan, an ammonia input pipe and a flow guide mechanism is designed. The fan is used to accelerate the air input, and the rapid mixing is achieved through the flow guide mechanism, and uniform flow transfer is achieved through the diameter-reducing pipe and the flow guide tube.
It improves the mixing efficiency of ammonia and air, facilitates the disassembly and maintenance of the device, ensures the uniform delivery of mixed ammonia, and improves the stability and efficiency of the system.
Smart Images
Figure CN223096566U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of flue gas denitration treatment, and particularly relates to a denitration ammonia-air mixing device. Background Technique
[0002] Liquid ammonia, as an important denitration raw material in the SCR technology, is vaporized by an evaporator before being injected into the SCR reactor, and is mixed with air in a mixer in a certain proportion and then sprayed into the SCR reactor. Therefore, the mixing effect of the ammonia-air mixer directly restricts the stability and efficiency of the operation of the flue gas denitration system.
[0003] At present, when the denitration ammonia-air mixing device is in use, air cannot be quickly combined with ammonia, the mixing efficiency is not high, and at the same time, it is not convenient to disassemble and not easy to overhaul. At the same time, the mixed ammonia cannot be evenly split and transported. For this reason, we propose a denitration ammonia-air mixing device. Content of the Utility Model
[0004] The purpose of the utility model is to provide a denitration ammonia-air mixing device to solve the problems in the above-mentioned background technique that when the current denitration ammonia-air mixing device is in use, air cannot be quickly combined with ammonia, the mixing efficiency is not high, and at the same time, it is not convenient to disassemble and not easy to overhaul, and at the same time, the mixed ammonia cannot be evenly split and transported.
[0005] To achieve the above purpose, the utility model provides the following technical solution: a denitration ammonia-air mixing device, including a support pipe, a mixing pipe is arranged in the support pipe, a fan is arranged in the mixing pipe, an ammonia input pipe is further arranged on the support pipe, the ammonia input pipe is connected to the mixing pipe, an air delivery pipe is arranged on one side of the support pipe, and a flow guiding mechanism is arranged on one side in the support pipe. The flow guiding mechanism includes a positioning part, a gas collecting hood is arranged on the positioning part, a connecting part is arranged at one end of the gas collecting hood, and the positioning part is detachably connected to the support pipe through an assembly structure. Among them, a split flow and transportation mechanism for the mixed ammonia is further arranged at one end of the mixing pipe.
[0006] Preferably, the assembly structure includes an installation rod, the installation rod is arranged on the positioning part, one end of the installation rod is clamped in an installation groove, and a clamping component is further arranged on the installation rod, which can assemble the positioning part and the support pipe.
[0007] Preferably, the clamping component includes a positioning pin, the positioning pin is movably arranged in a groove, the groove is arranged on the installation rod, one end of the positioning pin is clamped in a conical positioning groove, and the conical positioning groove is arranged on one side in the installation groove, which can quickly position the installation rod and the installation groove.
[0008] Preferably, a return spring is arranged in the groove. One end of the return spring is connected to the positioning pin, and the positioning pin can be clamped and fixed.
[0009] Preferably, the conical positioning groove communicates with the adjusting groove. The adjusting groove is arranged on the support pipe. A push rod is movably arranged in the adjusting groove. By moving the push rod, the positioning pin can be separated from the conical positioning groove, which is convenient for disassembling the positioning part from the support pipe.
[0010] Preferably, a limiting slider is further arranged on the side surface of the push rod. One end of the limiting slider is slidably arranged in the limiting sliding groove. The limiting sliding grooves are symmetrically arranged in the adjusting groove, which improves the stability of the push rod during movement.
[0011] Preferably, the shunt conveying mechanism includes a reducing pipe. The reducing pipe is arranged on the mixing pipe. A plurality of shunt pipes are arranged on the reducing pipe at equal intervals in a ring shape. A plurality of exhaust assemblies are arranged on the shunt pipes, which can accelerate the flow rate of the mixed ammonia gas.
[0012] Preferably, the exhaust assembly includes a connecting pipe. The connecting pipe is connected to the shunt pipe. An exhaust disc is arranged on the connecting pipe. A plurality of exhaust heads are evenly arranged on the exhaust disc, which can evenly convey the mixed ammonia gas into the gas transmission pipe.
[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0014] (1) The present utility model can quickly input air and quickly mix it with ammonia gas, improving the mixing efficiency of ammonia gas and air. At the same time, it is convenient for disassembly and assembly, facilitating the cleaning and maintenance of the components in the support pipe.
[0015] (2) The present utility model can decelerate and shunt the mixed ammonia gas and evenly convey the mixed ammonia gas into the gas transmission pipe, improving the uniformity of the input of the mixed ammonia gas. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a schematic structural diagram of the present utility model;
[0017] Figure 2 is a schematic semi-sectional structural diagram of the present utility model;
[0018] Figure 3 is Figure 2 the enlarged structural diagram at A in
[0019] Figure 4 is Figure 2 the enlarged structural diagram at B in
[0020] Figure 5 is a schematic semi-sectional structural diagram of the shunt conveying mechanism in the present utility model;
[0021] In the figure: 1. Diversion mechanism; 2. Mixing pipe; 3. Support pipe; 4. Gas transmission pipe; 5. Ammonia input pipe; 6. Shunt conveying mechanism; 7. Fan; 11. Positioning part; 12. Air collecting hood; 13. Connecting part; 14. Filter screen; 61. Reducing pipe; 62. Shunt pipe; 63. Connecting pipe; 64. Exhaust disc; 65. Exhaust head; 101. Installation groove; 102. Installation rod; 103. Return spring; 104. Positioning pin; 105. Conical positioning groove; 106. Adjusting groove; 107. Thumb rod; 108. Limit slider; 109. Limit sliding groove. Specific embodiments
[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0023] Please refer to Figures 1 - 3 , the present invention provides a technical solution: a denitration ammonia-air mixing device, including a support pipe 3, a mixing pipe 2 is arranged in the support pipe 3, a fan 7 is arranged in the mixing pipe 2, an ammonia input pipe 5 is further arranged on the support pipe 3, the ammonia input pipe 5 is connected to the mixing pipe 2, a gas transmission pipe 4 is arranged on one side of the support pipe 3, and a diversion mechanism 1 is arranged on one side in the support pipe 3. The diversion mechanism 1 includes a positioning part 11, a gas collecting hood 12 is arranged on the positioning part 11, a connecting part 13 is arranged at one end of the gas collecting hood 12, and the positioning part 11 is detachably connected to the support pipe 3 through an assembly structure.
[0024] First, the positioning part 11 is installed on the support pipe 3, and then the connecting part 13 is snapped into the mixing pipe 2. The air is centrally conveyed to the air collecting hood 12 by the fan 7. The air collecting hood 12 accelerates and conveys the air to the connecting part 13, and the connecting part 13 accelerates and conveys the air into the mixing pipe 2. At the same time, the ammonia input pipe 5 is connected to an external ammonia conveying device, and the external ammonia conveying device conveys ammonia into the mixing pipe through the ammonia input pipe 5 and mixes it with the air in the mixing pipe 2.
[0025] Furthermore, a filter screen 14 is arranged in the connecting part 13. When the air passes through the filter screen 14, the filter screen 14 can filter the input air and avoid the entry of impurities into the mixing pipe 2.
[0026] As a specific embodiment of this application, please refer to Figure 2 and Figure 4, The assembly structure includes an installation rod 102. The installation rod 102 is arranged on the positioning part 11. One end of the installation rod 102 is clamped in the installation groove 101. A clamping component is also arranged on the installation rod 102, which can assemble the positioning part 11 and the support pipe 3. The clamping component includes a positioning pin 104. The positioning pin 104 is movably arranged in a groove. The groove is arranged on the installation rod 102. One end of the positioning pin 104 is clamped in the conical positioning groove 105. The conical positioning groove 105 is arranged on one side inside the installation groove 101, which can quickly position the installation rod 102 and the installation groove 101. A return spring 103 is arranged in the groove. One end of the return spring 103 is connected to the positioning pin 104, which can clamp and fix the positioning pin 104.
[0027] First, insert the installation rod 102 on the positioning part 11 into the installation groove 101. The movement of the positioning plate drives the installation rod 102 to move in the installation groove 101. At the same time, the positioning pin 104 compresses the return spring 103 in the groove. When the positioning part 11 is attached to the support pipe 3, under the action of the elastic force of the return spring 103, the positioning pin 104 is clamped into the conical positioning groove 105, and the installation rod 102 is positioned, completing the quick installation of the positioning part 11.
[0028] Furthermore, the conical positioning groove 105 is communicated with the adjustment groove 106. The adjustment groove 106 is arranged on the support pipe 3. A push rod 107 is movably arranged in the adjustment groove 106. By moving the push rod 107, the positioning pin 104 and the conical positioning groove 105 can be separated, facilitating the disassembly of the positioning part 11 and the support pipe 3.
[0029] When it is necessary to disassemble the positioning part 11, press the push rod 107. The push rod 107 moves in the adjustment groove 106. The movement of the push rod 107 drives the positioning pin 104 to move and moves the positioning pin 104 out of the conical positioning groove 105. Then separate the positioning part 11 and the support pipe 3, and clean or repair the components inside the support pipe 3.
[0030] A limit slider 108 is also arranged on the side of the push rod 107. One end of the limit slider 108 is slidably arranged in the limit chute 109. The limit chutes 109 are symmetrically arranged in the adjustment groove 106. The push rod 107 drives the limit slider 108 to move in the limit chute 109, improving the stability of the push rod 107 during movement.
[0031] As a specific embodiment of this application, please refer to Figure 5, one end of the mixing pipeline 2 is further provided with a shunt conveying mechanism 6 for the shunt conveying of the ammonia gas after mixing. The shunt conveying mechanism 6 includes a reducing pipe 61 which is arranged on the mixing pipeline 2. A plurality of shunt pipes 62 are arranged on the reducing pipe 61 at equal intervals in a ring shape. A plurality of exhaust assemblies are arranged on the shunt pipes 62, which can accelerate the flow rate of the mixed ammonia gas. The exhaust assembly includes a connecting pipe 63 which is connected to the shunt pipe 62. An exhaust disc 64 is arranged on the connecting pipe 64. A plurality of exhaust heads 65 are evenly arranged on the exhaust disc 64, which can evenly convey the mixed ammonia gas into the gas transmission pipe 4.
[0032] The mixed ammonia gas in the mixing pipeline 2 is conveyed to the reducing pipe 61. The reducing pipe 61 accelerates the conveying of the mixed ammonia gas. The reducing pipe 61 conveys the mixed ammonia gas into the plurality of shunt pipes 62. The shunt pipes 62 convey the mixed ammonia gas to the connecting pipe 63. The connecting pipe 63 conveys the mixed ammonia gas to the exhaust disc 64. The exhaust disc 64 conveys the mixed ammonia gas to the exhaust heads 65. The exhaust heads 65 evenly convey the mixed ammonia gas into the gas transmission pipe 4, and the gas transmission pipe 4 conveys the mixed ammonia gas.
[0033] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A denitrification ammonia-air mixing device, characterized in that: It includes a support pipe (3), a mixing pipe (2) is arranged inside the support pipe (3), a fan (7) is arranged inside the mixing pipe (2), an ammonia inlet pipe (5) is further arranged on the support pipe (3), the ammonia inlet pipe (5) is connected to the mixing pipe (2), a gas transmission pipe (4) is arranged on one side of the support pipe (3), a flow guiding mechanism (1) is arranged on one side inside the support pipe (3), the flow guiding mechanism (1) includes a positioning part (11), a gas collecting hood (12) is arranged on the positioning part (11), a connecting part (13) is arranged at one end of the gas collecting hood (12), and the positioning part (11) is detachably connected to the support pipe (3) through an assembling structure. Among them, a flow splitting and conveying mechanism (6) for the ammonia after mixing is further arranged at one end of the mixing pipe (2).
2. The denitrification ammonia-air mixing device according to claim 1, characterized in that: The assembling structure includes an installation rod (102), the installation rod (102) is arranged on the positioning part (11), one end of the installation rod (102) is clamped in the installation groove (101), and a clamping component is further arranged on the installation rod (102).
3. The denitration ammonia-air mixing device according to claim 2, characterized in that: The clamping component includes a positioning pin (104), the positioning pin (104) is movably arranged in the groove, the groove is arranged on the installation rod (102), one end of the positioning pin (104) is clamped in the conical positioning groove (105), and the conical positioning groove (105) is arranged on one side inside the installation groove (101).
4. The denitration ammonia-air mixing device according to claim 3, wherein: A reset spring (103) is arranged in the groove, and one end of the reset spring (103) is connected to the positioning pin (104).
5. The denitrification ammonia-air mixing device according to claim 3, characterized in that: The conical positioning groove (105) is communicated with an adjustment groove (106), the adjustment groove (106) is arranged on the support pipe (3), and a push rod (107) is movably arranged in the adjustment groove (106).
6. The denitrification ammonia-air mixing device according to claim 5, wherein: A limit slider (108) is further arranged on the side of the push rod (107), one end of the limit slider (108) is slidably arranged in the limit chute (109), and the limit chutes (109) are symmetrically arranged in the adjustment groove (106).
7. A denitrification ammonia-air mixing device according to claim 1, characterized in that: The flow splitting and conveying mechanism (6) includes a reducing pipe (61), the reducing pipe (61) is arranged on the mixing pipe (2), a plurality of flow splitting pipes (62) are arranged on the reducing pipe (61) at equal intervals in a ring shape, and a plurality of exhaust components are arranged on the flow splitting pipes (62).
8. A denitrification ammonia-air mixing device according to claim 7, characterized in that: The exhaust component includes a connecting pipe (63), the connecting pipe (63) is connected to the flow splitting pipe (62), an exhaust disc (64) is arranged on the connecting pipe (63), and a plurality of exhaust heads (65) are uniformly arranged on the exhaust disc (64).