CN219494108U - Material conveying device of fly ash fuel incineration boiler - Google Patents
Material conveying device of fly ash fuel incineration boiler Download PDFInfo
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- CN219494108U CN219494108U CN202320751075.8U CN202320751075U CN219494108U CN 219494108 U CN219494108 U CN 219494108U CN 202320751075 U CN202320751075 U CN 202320751075U CN 219494108 U CN219494108 U CN 219494108U
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Abstract
The utility model relates to the technical field of boiler devices, and particularly discloses a pulverized fuel ash fuel incineration boiler material conveying device. The device comprises a fly ash conveying device, a fly ash stirring device and a fuel conveying device; the output end of the fly ash conveying device is connected with the fly ash stirring device; the fly ash stirring device is internally provided with a water spraying device and a monitoring device, the water spraying device is used for spraying the fly ash wet, and the monitoring device is used for monitoring the stirring aggregate condition of the fly ash; the fuel conveying device comprises a conveyor and a conveyor shell, a bulk fly ash feeding port and a large-particle fuel feeding port are arranged on the conveyor shell, the bulk fly ash feeding port is connected with an outlet of the fly ash stirring device, and the fuel conveying device conveys the fly ash into a boiler. The utility model solves the problem that the pulverized fuel ash cannot burn in a dense phase zone due to fine particles and small specific gravity of the pulverized fuel ash, prolongs the burning time of the pulverized fuel ash in a hearth, improves the burning share of the pulverized fuel ash and improves the boiler efficiency.
Description
Technical Field
The utility model relates to the technical field of boiler devices, and particularly discloses a pulverized fuel ash fuel incineration boiler material conveying device.
Background
In other industrial production processes such as calcium carbide, a large amount of fly ash solid waste is generated, the waste has fine granularity, contains a large amount of carbon powder and calcium oxide powder, and also contains a small amount of combustible substances such as calcium carbide powder, sulfur, phosphorus, CO and the like, has a certain heat value, and is easy to generate spontaneous combustion after contacting with air. Therefore, the fly ash has good recycling value.
The pneumatic conveying system for the boiler fly ash disclosed by the patent No. CN208948374U can recycle the fly ash, and the jet pump of the bag-type dust collector is arranged to directly convey the fly ash in the bag-type dust collector to a terminal bin for centralized collection treatment, so that the pneumatic conveying system is convenient for later use.
Fly ash is mostly used as boiler fuel for incineration treatment, a circulating fluidized bed boiler is generally adopted for combustion treatment in conventional incineration treatment, and steam generated by the boiler can provide heat energy for enterprises for utilization. The particle size of the circulating fluidized bed is generally 0-10 mm, d50=1-1.5 mm, but the particle size of the fly ash is 0-5 mu m, and the circulating fluidized bed belongs to the fuel easy to catch fire and flame out. Because the particle size of the fly ash is too small, the fly ash cannot be separated by the cyclone separator and then enters the hearth to be circularly combusted, and the fly ash is directly blown to the upper part of the hearth or even combusted by the tail flue under the action of primary air of the boiler after entering the hearth, and cannot be combusted and released in a dense-phase area, so that the boiler fuel is combusted, the combustion efficiency is low, ash deposition at the superheater at the outlet of the hearth is serious, the operation period of the boiler is short, the exhaust gas temperature is high, and the like. In order to overcome the problems, the provision of a scientific and reasonable fly ash conveying device is particularly important.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides a pulverized fuel ash fuel incineration boiler material conveying device.
The utility model discloses a fly ash fuel incineration boiler conveying device, which adopts the following technical scheme:
a fly ash fuel burning boiler feed conveyor comprising: a fly ash conveying device, a fly ash stirring device and a fuel conveying device; the output end of the fly ash conveying device is connected with the fly ash stirring device; the coal ash stirring device is internally provided with a water spraying device and a monitoring device, the water spraying device is used for spraying coal ash to wet, and the monitoring device is used for monitoring the stirring aggregate condition of the coal ash stirring device; the fuel conveying device comprises a conveyor and a conveyor shell, wherein a bulk fly ash feed inlet and a large-particle fuel feed inlet are arranged on the conveyor shell, the bulk fly ash feed inlet is connected with an outlet of the fly ash stirring device, and the fuel conveying device conveys the fly ash into a boiler.
Preferably, the water spraying device includes: the fly ash stirring device comprises a spray head arranged in the fly ash stirring device, a water pipe connected with the spray head and a regulating valve arranged on the water pipe.
Preferably, the monitoring device is an image pick-up device, and the image pick-up device is arranged at one end close to the outlet of the fly ash stirring device.
Preferably, the large-particle fuel feed inlet is arranged at a starting position of the conveyor shell, which is close to the conveying direction, and the bulk fly ash feed inlet is arranged at an end position of the conveyor shell, which is close to the conveying direction.
Preferably, the conveyor comprises a conveying auger mounted in the conveyor housing and a conveying motor assembled with the conveying auger.
Preferably, the fly ash stirring device comprises: the stirring machine comprises a stirring machine shell, a conveying shaft arranged in the stirring machine shell, stirring blades arranged on the periphery of the conveying shaft and a stirring motor assembled with the conveying shaft, wherein the stirring blades are spirally arranged along the axial direction of the conveying shaft.
Preferably, the fly ash conveying device is a fly ash pneumatic conveying device.
Preferably, the pneumatic conveying device for the fly ash comprises: pneumatic conveying pipeline, fly ash bin, fly ash conveying pipe and conveyor; the pneumatic conveying pipeline is connected with the fly ash bin, the lower part of the fly ash bin is connected with the fly ash conveying pipe, and the conveyor is arranged on the fly ash conveying pipe.
Compared with the prior art, the utility model at least comprises the following beneficial effects:
according to the utility model, the stirring device is arranged, the water is added to stir the fly ash into the bulk particles, the specific gravity of the fly ash is increased, so that the bulk fly ash can be doped with large particle fuels such as semi-coke and the like to be sent into the hearth for combustion, and the fly ash can be ensured to sink to a dense-phase region of the hearth for combustion after entering the hearth due to the increased specific gravity, so that the problem that the fly ash cannot be combusted in the dense-phase region due to the thin particles and the small specific gravity of the fly ash originally is solved, the combustion time of the fly ash in the hearth is prolonged, the combustion share of the fly ash is improved, the boiler smoke discharging temperature is effectively reduced, and the boiler efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a conveying device of a fly ash fuel burning boiler in this embodiment;
FIG. 2 is a schematic view of a pulverized fuel stirring device of a pulverized fuel-fired boiler feed conveying device according to the embodiment;
fig. 3 is a schematic diagram of a fuel conveying device of a fly ash fuel burning boiler in this embodiment.
Reference numerals illustrate: 1. a fly ash conveying device; 11. a fly ash bin; 12. a fly ash conveying pipe; 13. a conveyor; 2. a fly ash stirring device; 21. a mixer housing; 22. a conveying shaft; 23. stirring blades; 24. a stirring motor; 25. a spray head; 26. a water pipe; 27. a regulating valve; 28. an image pickup device; 3. a fuel delivery device; 31. a conveyor housing; 32. conveying the auger; 33. a conveying motor; 34. a bulk fly ash feed inlet; 35. and a large particle fuel feed inlet.
Detailed Description
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
The fly ash combustion incineration boiler conveying device comprises a fly ash conveying device 1, a fly ash stirring device 2 and a fuel conveying device 3 which are connected in sequence as shown in figures 1-3. The coal ash stirring device 1 is internally provided with a water spraying device and a monitoring device, the water spraying device is used for spraying and stirring coal ash into a bulk, the specific gravity of coal ash fuel is increased, the coal ash fuel can be lowered to a dense-phase area at the bottom of a hearth for combustion after entering the hearth, the combustion share of the dense-phase area is improved, the combustion time in the hearth is prolonged, the coal ash fuel can be fully combusted in the hearth, the combustion efficiency is improved, the combustion working condition is improved, and meanwhile, the boiler efficiency is also improved.
Specifically, referring to fig. 1, a fly ash conveying device 1 is a fly ash pneumatic conveying device, and the fly ash pneumatic conveying device comprises: a pneumatic conveying pipeline, a fly ash bin 11, a fly ash conveying pipe 12 and a conveyor 13; the pneumatic conveying pipeline is connected with the fly ash bin 11, the lower part of the fly ash bin 11 is connected with the fly ash conveying pipe 12, and the conveyor 13 is arranged on the fly ash conveying pipe 12. The fly ash is conveyed to a fly ash bin by a pneumatic conveying pipe through pneumatic conveying, and falls into a fly ash stirring device under the action of a conveyor.
Referring to fig. 1 and 2, the fly ash stirring device 2 includes a stirrer housing 21, a conveying shaft 22 installed in the stirrer housing 21, stirring blades 23 installed at the outer periphery of the conveying shaft 22, and a motor 24 assembled with the conveying shaft 21, wherein the stirring blades 23 are spirally arranged along the axial direction of the conveying shaft 22, thereby playing a role in stirring the fly ash and simultaneously conveying the fly ash forward.
Referring to fig. 1, the water spraying device includes a spray head 25 installed in the fly ash stirring device 2, a water pipe 26 connected to the spray head 25, and a regulating valve 27 installed on the water pipe 26. The monitoring device is a camera device 28, and the camera device 28 is arranged at one end close to the outlet of the fly ash stirring device 2 and is used for monitoring the aggregate condition of the fly ash after being stirred by water. After the fly ash enters the fly ash stirring device 2, the fly ash is fully stirred with water to form a bulk or spherical fly ash, the water spraying amount is judged according to the coal ash conveying amount and the observed aggregate condition of the camera device 28, the water amount is regulated by the regulating valve 27, so that the fly ash is stirred to form a bulk with proper size, and then the bulk or spherical fly ash is sent into the fuel conveying device 3 arranged at the lower part of the fly ash stirring device 2.
Referring to fig. 1 and 3, the fuel delivery device 3 includes: a conveyor housing 31, a conveyor auger 32 mounted within the conveyor housing 31, and a motor 33 assembled with the conveyor auger 32. The conveyor shell 31 is provided with a bulk fly ash feed inlet 34, the bulk fly ash feed inlet 34 is connected with an outlet of the fly ash stirring device 2, and the fuel conveying device 3 conveys the stirred bulk fly ash to a boiler for combustion utilization.
In order to improve the combustion efficiency of the boiler, the fly ash is combusted and utilized in a doped mode, a large-particle fuel feed inlet 35 is further arranged on the conveyor shell 31, and large-particle fuel such as semi-coke and the like enters the conveyor shell 31 through the large-particle fuel feed inlet 35, so that the bulk fly ash and the large-particle fuel are mixed in the fuel conveying device 3 and then enter a hearth through the conveying auger 32.
In order to avoid partial aggregate crushing caused by mixing the bulk fly ash and the large-particle fuel, the large-particle fuel feed inlet 35 is arranged at the initial position of the conveyor shell 31, which is close to the conveying direction, and the bulk fly ash feed inlet 34 is arranged at the final position of the conveyor shell 31, which is close to the conveying direction, so that the stirring time of the bulk fly ash can be reduced, the particle stability of the bulk fly ash is improved, and the full combustion utilization of the fly ash is facilitated.
The foregoing has outlined rather broadly the more detailed description of the utility model in order that the detailed description of the utility model that follows may be better understood, and in order that the present principles and embodiments may be better understood; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present utility model, the present description should not be construed as limiting the present utility model in view of the above.
Claims (8)
1. A fly ash fuel burning boiler feed conveyor, comprising: a fly ash conveying device, a fly ash stirring device and a fuel conveying device; the output end of the fly ash conveying device is connected with the fly ash stirring device; the coal ash stirring device is internally provided with a water spraying device and a monitoring device, the water spraying device is used for spraying coal ash to wet, and the monitoring device is used for monitoring the stirring aggregate condition of the coal ash stirring device; the fuel conveying device comprises a conveyor and a conveyor shell, wherein a bulk fly ash feed inlet and a large-particle fuel feed inlet are arranged on the conveyor shell, the bulk fly ash feed inlet is connected with an outlet of the fly ash stirring device, and the fuel conveying device conveys the fly ash into a boiler.
2. A fly ash fuel burning boiler feed apparatus as set forth in claim 1 wherein said water spraying means comprises: the fly ash stirring device comprises a spray head arranged in the fly ash stirring device, a water pipe connected with the spray head and a regulating valve arranged on the water pipe.
3. The fly ash fuel burning boiler feed device according to claim 1, wherein the large particle fuel feed port is provided at a start position of the conveyor housing near the conveying direction, and the lump fly ash feed port is provided at an end position of the conveyor housing near the conveying direction.
4. The pulverized fuel-fired boiler feed unit as set forth in claim 1, wherein the monitoring device is a camera device mounted at an end near the outlet of the pulverized fuel-fired stirring device.
5. A fly ash fuel burning boiler feed conveyor as in claim 1 wherein the conveyor comprises a conveyor auger mounted within the conveyor housing and a conveyor motor assembled with the conveyor auger.
6. A fly ash fuel burning boiler feed apparatus as set forth in claim 1, wherein said fly ash stirring apparatus comprises: the stirring machine comprises a stirring machine shell, a conveying shaft arranged in the stirring machine shell, stirring blades arranged on the periphery of the conveying shaft and a stirring motor assembled with the conveying shaft, wherein the stirring blades are spirally arranged along the axial direction of the conveying shaft.
7. The fly ash fuel burning boiler feed conveyor of claim 1, wherein the fly ash conveyor is a fly ash pneumatic conveyor.
8. The fly ash fuel burning boiler feed conveyor of claim 7, wherein the fly ash pneumatic conveyor comprises: pneumatic conveying pipeline, fly ash bin, fly ash conveying pipe and conveyor; the pneumatic conveying pipeline is connected with the fly ash bin, the lower part of the fly ash bin is connected with the fly ash conveying pipe, and the conveyor is arranged on the fly ash conveying pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320751075.8U CN219494108U (en) | 2023-04-06 | 2023-04-06 | Material conveying device of fly ash fuel incineration boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320751075.8U CN219494108U (en) | 2023-04-06 | 2023-04-06 | Material conveying device of fly ash fuel incineration boiler |
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| Publication Number | Publication Date |
|---|---|
| CN219494108U true CN219494108U (en) | 2023-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320751075.8U Active CN219494108U (en) | 2023-04-06 | 2023-04-06 | Material conveying device of fly ash fuel incineration boiler |
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| Country | Link |
|---|---|
| CN (1) | CN219494108U (en) |
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- 2023-04-06 CN CN202320751075.8U patent/CN219494108U/en active Active
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