CN215892336U - Combustion device of biomass particle direct-fired boiler - Google Patents
Combustion device of biomass particle direct-fired boiler Download PDFInfo
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- CN215892336U CN215892336U CN202121613776.2U CN202121613776U CN215892336U CN 215892336 U CN215892336 U CN 215892336U CN 202121613776 U CN202121613776 U CN 202121613776U CN 215892336 U CN215892336 U CN 215892336U
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Abstract
Aiming at the problems of insufficient fuel combustion, unreasonable structural design, over-standard boiler tail gas emission and the like of the conventional biomass particle direct-fired boiler, the utility model provides a combustion device of the biomass particle direct-fired boiler; the utility model consists of a hearth (1), a feeding device (2), an ignition device (3), a blast cap (4), an arc-shaped air distribution plate (5), a tubular air chamber (6) and an ash falling bucket (7); because the utility model adopts the fire-resistant heat storage hearth and the combustion device with special design, the hearth has high temperature and long smoke flow, and the utility model can supply air and perform boiling combustion in stages, is particularly suitable for the full combustion of biomass granular fuel with high volatile matter and low heat value, has high combustion efficiency and reaches the tail gas emission standard.
Description
Technical Field
The utility model belongs to boiler auxiliary equipment, and particularly relates to a combustion device of a biomass particle direct-fired boiler.
Background
The biomass particle fuel is widely applied as a renewable energy source, and boiler combustion equipment for combusting the biomass particle fuel is mostly formed by modifying a coal-fired boiler, so that the problems of insufficient fuel combustion, unreasonable structural design, excessive boiler tail gas emission and the like exist.
Disclosure of Invention
The utility model aims to design and manufacture a combustion device of a biomass particle direct-fired boiler, so that the purposes of fully combusting biomass particle fuel and discharging tail gas up to the standard are achieved, and the biomass particle fuel is widely popularized and applied.
The utility model is realized by the following steps: the boiler combustion device consists of a hearth (1), a feeding device (2), an ignition device (3), an air cap (4), an arc-shaped air distribution plate (5), a tubular air chamber (6) and an ash falling bucket (7). The blast cap (4) is arranged on the upper part of the arc-shaped air distribution plate (5), the tubular air chamber (6) is arranged on the lower part of the arc-shaped air distribution plate (5), the feeding device (2) is arranged on the lower part of the hearth (1) and above the ignition device (3), and the ash falling hopper (7) is positioned at the bottom of the hearth (1).
The upper part of the hearth (1) is of a rectangular structure, the lower part of the hearth is of a trapezoidal structure, and the inner wall of the hearth is made of a fireproof heat storage material.
The feeding device (2) adopts a screw feeder to feed, and fuel enters the material conveying pipeline and then enters the hearth through positive pressure of conveying air.
The ignition device (3) adopts an electric heating device and performs ignition through high-temperature hot air.
The blast cap (4) is installed by inclining at 45-60 degrees, the number of the small holes which are uniformly distributed on the periphery of the upper part of the blast cap is 5-7, and the diameter of the small holes is phi 4-phi 8.
The arc-shaped air distribution plate (5) is connected with the bottom of the hearth, bases for fixing the air caps are arranged on the arc-shaped air distribution plate in a staggered mode, the number of the bases is 3-6, and a certain number of ash leakage holes are formed in the arc-shaped air distribution plate.
The upper part of the tubular wind chamber (6) is communicated with the blast cap (4) through a blast cap base.
The ash falling hopper (7) is connected with the arc-shaped air distribution plate (5) and adopts a funnel-shaped structure.
The working principle of the utility model is as follows: the biomass granular fuel enters the hearth through the feeding device, air enters the hearth through the hood of the tubular air chamber after being heated, the biomass granular fuel is ignited and combusted under the heating of high-temperature hot air of the ignition device, the temperature of the hearth is rapidly increased after the fuel is ignited, the fuel is boiled and combusted under the action of the hot air, and ash residues after the fuel is fully combusted are discharged through the ash falling hopper.
The utility model has the technical effects that: because the utility model adopts the fireproof heat storage hearth, the hearth has high temperature and long smoke flow, and the utility model supplies air in a grading way and burns in a boiling way, thereby being particularly suitable for the full combustion of biomass granular fuel with high volatile matter and low heat value, having high combustion efficiency and reaching the tail gas emission standard.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and constitute a part of this application, are illustrated in the accompanying drawings in which FIG. 1 is a schematic structural view of the utility model;
the device comprises a hearth 1, a hearth 2, a feeding device 3, an ignition device 4, a hood 5, an arc-shaped air distribution plate 6, a tubular air chamber 7 and an ash falling hopper.
Detailed Description
The utility model will be further described with reference to the accompanying drawings in which: arc air distribution plate (5) is arranged at the lower part of hearth (1), air cap (4) is arranged on arc air distribution plate (5), air cap (4) is communicated with tubular air chamber (6), feeding device (2) and ignition device (3) are respectively arranged at the upper part of arc air distribution plate (5), and ash falling bucket (7) is arranged at the bottom of arc air distribution plate (5).
The working procedures of the utility model are as follows: biomass particle fuel enters a hearth under the action of conveying air through a dragon-jointed feeding device in a positive pressure mode, the fuel is ignited and combusted through an electric heating high-temperature hot air ignition device, air required by combustion enters the hearth through a hood of a tubular air chamber after being heated through a tail heating surface, the biomass particle fuel is boiled and combusted in the hearth, the temperature of the hearth is rapidly increased, the fuel is fully combusted, and combusted ash and slag enter an ash falling hopper through ash leakage holes in an arc-shaped air distribution plate and are discharged for comprehensive utilization.
It should be noted that the above-mentioned embodiments enable one skilled in the art to more fully understand the present invention, and that modifications and equivalents can be made by those skilled in the art; all such modifications and variations are intended to be included herein within the scope of this disclosure and the present invention and within the scope thereof.
Claims (3)
1. A combustion device of a biomass particle direct combustion boiler is characterized by consisting of a hearth (1), a feeding device (2), an ignition device (3), an air cap (4), an arc-shaped air distribution plate (5), a tubular air chamber (6) and an ash falling bucket (7); wherein, arc air distribution plate (5) is arranged at the lower part of the hearth (1), an air cap (4) is arranged on the arc air distribution plate (5), the air cap (4) is communicated with the tubular air chamber (6), a feeding device (2) and an ignition device (3) are respectively arranged at the upper part of the arc air distribution plate (5), and an ash falling hopper (7) is arranged at the bottom of the arc air distribution plate (5).
2. The combustion device of the biomass particle direct-fired boiler as recited in claim 1, wherein the arc-shaped air distribution plate (5) is connected with the bottom of the furnace, bases for fixing the air caps are arranged on the arc-shaped air distribution plate in a staggered manner, the number of the bases is 3-6, and a certain number of ash holes are arranged on the arc-shaped air distribution plate.
3. The combustion device of the biomass particle direct-fired boiler according to claim 2, characterized in that the blast cap (4) is installed with an inclination of 45-60 degrees, the number of the small holes uniformly distributed around the upper part of the blast cap is 5-7, and the diameter of the small holes is phi 4-phi 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121613776.2U CN215892336U (en) | 2021-07-09 | 2021-07-09 | Combustion device of biomass particle direct-fired boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121613776.2U CN215892336U (en) | 2021-07-09 | 2021-07-09 | Combustion device of biomass particle direct-fired boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215892336U true CN215892336U (en) | 2022-02-22 |
Family
ID=80501296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121613776.2U Active CN215892336U (en) | 2021-07-09 | 2021-07-09 | Combustion device of biomass particle direct-fired boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215892336U (en) |
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2021
- 2021-07-09 CN CN202121613776.2U patent/CN215892336U/en active Active
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