CN111947131A - Combustion device - Google Patents
Combustion device Download PDFInfo
- Publication number
- CN111947131A CN111947131A CN201910400303.5A CN201910400303A CN111947131A CN 111947131 A CN111947131 A CN 111947131A CN 201910400303 A CN201910400303 A CN 201910400303A CN 111947131 A CN111947131 A CN 111947131A
- Authority
- CN
- China
- Prior art keywords
- grate
- combustion
- flue gas
- fuel
- gas outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B60/00—Combustion apparatus in which the fuel burns essentially without moving
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B80/00—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel
- F23B80/02—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel by means for returning flue gases to the combustion chamber or to the combustion zone
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Solid-Fuel Combustion (AREA)
Abstract
The invention provides a combustion device. The device comprises: the furnace, the air inlet I, the air inlet II, the grate I, the grate II, the flue gas outlet and the connecting pipeline; the first grate and the second grate are arranged inside the hearth; combustion of the fuel occurs on the grate. The device has higher combustion efficiency.
Description
Technical Field
The invention relates to the technical field of combustion, comprising heating, heat exchange and the like.
Background
With the rapid development of the industry, there are many occasions where heat supply is required. Many small and medium boilers adopt grate-fired furnaces. The grate-fired furnace generally has low combustion efficiency and serious pollution emission.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an efficient combustion device.
A combustion apparatus, comprising: the furnace chamber, the air inlet I, the grate II and the flue gas outlet;
the first grate and the second grate are arranged inside the hearth; the fuel is placed on the first fire grate and the second fire grate; air required by combustion enters the hearth from the first air inlet; and smoke generated by combustion passes through the first grate and the second grate and is finally discharged through a smoke outlet.
And a part of the flue gas passes through the connecting pipeline at the flue gas outlet and returns to the first air inlet. And a part of the flue gas returns to the second air inlet through the connecting pipeline at the flue gas outlet.
The vertical distance between the first grate and the second grate is less than 1.5 meters.
The invention realizes the full combustion of fuel and the control of pollutants. The distance between the two layers of fire grates is less than 1.5 meters, and a large-range stable combustion area is formed between the two layers due to mutual heat complementation, so that unburned particulate matters, carbon monoxide, methane and other combustible gases contained in the smoke discharged from the first fire grate are fully combusted. The stable region also avoids local high temperatures, which can reduce the formation of nitrogen oxides.
And part of the flue gas returns to the air inlet through the connecting pipeline, so that the combustion completion degree can be further enhanced, and meanwhile, the fuel on the grate is used as a reducing agent to reduce part of nitrogen oxides in the flue gas.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The first embodiment is as follows:
as shown in fig. 1, the present invention provides a combustion apparatus to solve the problems of low efficiency and high emission of the existing apparatus.
A combustion apparatus, comprising: the device comprises a hearth 1, an air inlet I4, a fire grate I2, a fire grate II 3 and a flue gas outlet 5;
the first grate 2 and the second grate 3 are arranged inside the hearth 1; the fuel is placed on the first fire grate 2 and the second fire grate 3; air required by combustion enters the hearth from the first air inlet 4; the flue gas generated by combustion passes through the first grate 2 and the second grate 3 and is finally discharged through a flue gas outlet 5.
The flue gas inlet device is characterized in that a part of flue gas passes through a connecting pipeline 7 at a flue gas outlet and returns to the first air inlet 4.
The vertical spacing between the first grate 2 and the second grate 3 is less than 1.5 m.
The coal-fired boiler is characterized in that the fuel on the second grate 3 is coal, and the fuel on the first grate 2 is other substances.
The method is characterized in that the fuel on the first fire grate 2 and the second fire grate 3 is any solid fuel.
The above description of the embodiments is only intended to facilitate the understanding of the method of the invention and its core ideas; the content of which should not be construed as limiting the invention. In the present invention, terms indicating positional relationships, such as "upper", "lower", "front", "rear", and the like, only indicate relative positions, and are not intended to specifically limit the positions.
Claims (6)
1. A combustion apparatus, comprising: the device comprises a hearth (1), a first air inlet (4), a first fire grate (2), a second fire grate (3) and a flue gas outlet (5);
the first grate (2) and the second grate (3) are arranged inside the hearth (1); the fuel is placed on the first fire grate (2) and the second fire grate (3); air required by combustion enters the hearth from the first air inlet (4); the flue gas generated by combustion passes through the first grate (2) and the second grate (3) and is finally discharged through a flue gas outlet (5).
2. A combustion unit according to claim 1, characterized in that a part of the flue gases is returned to the first inlet (4) at the flue gas outlet via the connecting duct (7).
3. A combustion unit according to claim 1 or 2, characterized in that a part of the flue gases is returned to the second inlet (6) at the flue gas outlet via the connecting duct (7).
4. A combustion unit according to claim 1, 2 or 3, characterized in that the vertical distance between the first grate (2) and the second grate (3) is less than 1.5 m.
5. A combustion unit according to any one of claims 1-4, characterized in that the fuel on the second grate (3) is coal and the fuel on the first grate (2) is other material.
6. A combustion unit according to any one of claims 1-4, characterized in that the fuel on the first grate (2) and the second grate (3) is any solid fuel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910400303.5A CN111947131A (en) | 2019-05-15 | 2019-05-15 | Combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910400303.5A CN111947131A (en) | 2019-05-15 | 2019-05-15 | Combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111947131A true CN111947131A (en) | 2020-11-17 |
Family
ID=73336566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910400303.5A Withdrawn CN111947131A (en) | 2019-05-15 | 2019-05-15 | Combustion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111947131A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2060505U (en) * | 1989-09-27 | 1990-08-15 | 上海市杨浦区职工技术协作委员会 | Double-layer fire grate back-burning type coal burner |
| CN202281259U (en) * | 2011-10-28 | 2012-06-20 | 吴建波 | Novel efficient and energy-saving boiler |
| CN102634356A (en) * | 2012-04-13 | 2012-08-15 | 青岛大学 | Preparation device of charcoal with biomass as raw material |
| WO2018067078A1 (en) * | 2016-10-03 | 2018-04-12 | Demirel Hayri | Multi chamber incinerator for turbulent combustion of solid and biomass fuel |
| CN207407325U (en) * | 2017-10-25 | 2018-05-25 | 河北蓝烽锅炉压力容器制造有限公司 | Anti- fired biomass combustor |
| CN109442391A (en) * | 2018-09-27 | 2019-03-08 | 哈尔滨工业大学 | It is a kind of to be simple and efficient low-nitrogen discharged grate firing boiler |
-
2019
- 2019-05-15 CN CN201910400303.5A patent/CN111947131A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2060505U (en) * | 1989-09-27 | 1990-08-15 | 上海市杨浦区职工技术协作委员会 | Double-layer fire grate back-burning type coal burner |
| CN202281259U (en) * | 2011-10-28 | 2012-06-20 | 吴建波 | Novel efficient and energy-saving boiler |
| CN102634356A (en) * | 2012-04-13 | 2012-08-15 | 青岛大学 | Preparation device of charcoal with biomass as raw material |
| WO2018067078A1 (en) * | 2016-10-03 | 2018-04-12 | Demirel Hayri | Multi chamber incinerator for turbulent combustion of solid and biomass fuel |
| CN207407325U (en) * | 2017-10-25 | 2018-05-25 | 河北蓝烽锅炉压力容器制造有限公司 | Anti- fired biomass combustor |
| CN109442391A (en) * | 2018-09-27 | 2019-03-08 | 哈尔滨工业大学 | It is a kind of to be simple and efficient low-nitrogen discharged grate firing boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201117 |
|
| WW01 | Invention patent application withdrawn after publication |