CN103604122A - Multichannel pulverized coal burner - Google Patents
Multichannel pulverized coal burner Download PDFInfo
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- CN103604122A CN103604122A CN201310635311.0A CN201310635311A CN103604122A CN 103604122 A CN103604122 A CN 103604122A CN 201310635311 A CN201310635311 A CN 201310635311A CN 103604122 A CN103604122 A CN 103604122A
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- pipe
- airduct
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- pulverized coal
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Abstract
The invention discloses a multichannel pulverized coal burner. The multichannel pulverized coal burner comprises an outer pipe, an inner pipe, a central pipe and side air pipes, wherein the outer pipe, the inner pipe, the central pipe and the side air pipes are sequentially and coaxially arranged in a sleeved mode from outside to inside. A front end port of the outer pipe, a front end port of the inner pipe and a front end port of the central pipe are flush. An annular cavity defined by the outer pipe and the inner pipe forms an outer flow channel. An annular cavity defined by the inner pipe and the central pipe forms an inner flow channel and a round cavity inside the central pipe serves as a pulverized coal channel. The side air pipes are composed of the outer flow air pipe, the inner flow air pipe and an air inlet pipe, wherein the outer flow air pipe is communicated with the outer flow channel and the inner flow air pipe is communicated with the inner flow channel. According to the multifunctional pulverized coal burner, the pulverized coal channel is arranged in the center, the moving direction of pulverized coal when the pulverized coal enters the pulverized coal channel through a coal conveying pipe is consistent to the central pipe axis, therefore, flushing and abrasion to the pipe wall are greatly reduced, the performance of the burner is improved and the service life of the burner is prolonged; meanwhile, the structure is simple and adjustment of the air supply proportion of the inner flow channel and the outer flow channel is convenient.
Description
Technical field
The present invention relates to the coal burner that a kind of industrial rotary kiln is used, a kind of coal dust that adopts is the rotary kiln multicenter combustor of fuel specifically.
Background technology
Burner is that the chemical energy of fuel is converted to heat energy, for calcined by rotary kiln provides thermal source.The performance and used life of burner has direct impact to the yield and quality of rotary kiln, running rate.
It is fuel that China's rotary kiln adopts coal dust mostly, compares to gas and liquid, and coal dust can produce wearing and tearing in various degree to equipment.Development along with multi-channel coal powder combustor technology, its performance has had significant progress, requirement to ature of coal is also relaxed greatly, but the coal dust of burner enters coal dust passage from the side, the direction of motion and burner central shaft have certain angle and bring washing away of Guan Bi failed thoroughly to improve with wear problem, affect the service life of burner, restricted the further raising of rotary kiln running rate.
Summary of the invention
In order to overcome the deficiencies in the prior art, the object of this invention is to provide a kind ofly by coal dust passage centering, can effectively reduce the novel multi-channel burner that coal dust enters coal place wearing and tearing.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
A multi-channel coal powder combustor, comprises outer tube, inner tube, central tube and side airduct that coaxial ecto-entad is set with successively, the front port alignment of described outer tube, inner tube and central tube; The toroidal cavity surrounding between described outer tube and inner tube forms outflow channel, and the toroidal cavity surrounding between inner tube and central tube forms internal flow channel, and in central tube, circular cavity is coal dust passage; Described side airduct is comprised of the airduct that outflows, interior stream airduct and blast pipe, and the airduct that wherein outflows is communicated with outflow channel, and interior stream airduct is communicated with internal flow channel.
Described coal dust passage is communicated with the pipe of delivering coal; Described blast pipe is communicated with ajutage, and simultaneously to outflow airduct and interior stream airduct air feed.
Described outflow airduct is provided with the outflow wind butterfly valve that regulates air quantity and the outflow wind pressure table that detects stream pressure; Interior stream airduct is provided with the interior stream wind butterfly valve that regulates air quantity and the interior stream wind pressure table that detects stream pressure.
The fore-end outer surface cast certain thickness refractory lining of described outer tube.
Multi-channel coal powder combustor of the present invention compared with prior art, has the following advantages:
1, the present invention is by coal dust passage centering, coal dust is when the pipe of delivering coal enters coal dust passage, its direction of motion is consistent with central tube axis, the coal dust that has greatly alleviated conventional burners enters coal dust passage from the side, the direction of motion and burner central shaft have certain angle and bring the washing away and wear and tear of Guan Bi, and have improved the performance and used life of burner;
2, the strong adaptability of the present invention to coal medium;
3, the present invention is simple in structure, can flexible modulation internal flow channel and the air feed ratio of outflow channel.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of multi-channel coal powder combustor of the present invention;
Fig. 2 is the A-A cutaway view of Fig. 1 of the present invention;
In figure: 1, central tube; 2, inner tube; 3, outer tube; 4, refractory lining; 5, outflow airduct; 6, outflow wind pressure table; 7, interior stream wind pressure table; 8, outflow wind butterfly valve; 9, interior stream wind butterfly valve; 10, interior stream airduct; 11, blast pipe; 12, outflow channel; 13, internal flow channel; 14, coal dust passage.
The specific embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1 and Figure 2, a kind of multi-channel coal powder combustor, comprises outer tube 3, inner tube 2, central tube 1 and side airduct that coaxial ecto-entad is set with successively; The front port alignment of outer tube 3, inner tube 2 and central tube 1, the toroidal cavity surrounding between outer tube 3 and inner tube 2 forms outflow channel 12, and the toroidal cavity surrounding between inner tube 2 and central tube 1 forms internal flow channel 13, and the interior circular cavity of central tube 1 is coal dust passage 14; Side airduct is comprised of the airduct 5 that outflows, interior stream airduct 10 and blast pipe 11, and the airduct 5 that wherein outflows is communicated with outflow channel 12, interior stream airduct 10 is communicated with internal flow channel 13; Outflow airduct 5 is provided with outflow wind butterfly valve 8 and outflow wind pressure table 6, and interior stream airduct 10 is provided with interior stream wind butterfly valve 9 and interior stream wind pressure table 7; The fore-end outer surface of outer tube 3 is cast with refractory lining 4.
During use, the pipe of delivering coal is communicated with central tube 1, by 14 coal supplies of coal dust passage; Ajutage is communicated with blast pipe 11, by the wind of blast pipe 11 by outflow airduct 5 and interior stream airduct 10 simultaneously to outflow channel 12 and internal flow channel 13 air feeds, air feed ratio is regulated by outflow wind butterfly valve 8 and interior stream wind butterfly valve 9, for wind pressure, by outflow wind pressure table 6 and interior stream wind pressure table 7, is detected.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. a multi-channel coal powder combustor, comprises outer tube, inner tube, central tube and side airduct that coaxial ecto-entad is set with successively, it is characterized in that: the front port alignment of described outer tube, inner tube and central tube; The toroidal cavity surrounding between described outer tube and inner tube forms outflow channel, and the toroidal cavity surrounding between inner tube and central tube forms internal flow channel, and in central tube, circular cavity is coal dust passage; Described side airduct is comprised of the airduct that outflows, interior stream airduct and blast pipe, and the airduct that wherein outflows is communicated with outflow channel, and interior stream airduct is communicated with internal flow channel.
2. multi-channel coal powder combustor according to claim 1, is characterized in that: described coal dust passage is communicated with the pipe of delivering coal; Described blast pipe is communicated with ajutage, and simultaneously to outflow airduct and interior stream airduct air feed.
3. multi-channel coal powder combustor according to claim 1, is characterized in that: described outflow airduct is provided with the outflow wind butterfly valve that regulates air quantity and the outflow wind pressure table that detects stream pressure; Interior stream airduct is provided with the interior stream wind butterfly valve that regulates air quantity and the interior stream wind pressure table that detects stream pressure.
4. according to the multi-channel coal powder combustor described in any one in claim 1-3, it is characterized in that: the fore-end outer surface cast certain thickness refractory lining of described outer tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310635311.0A CN103604122A (en) | 2013-12-03 | 2013-12-03 | Multichannel pulverized coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310635311.0A CN103604122A (en) | 2013-12-03 | 2013-12-03 | Multichannel pulverized coal burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103604122A true CN103604122A (en) | 2014-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310635311.0A Pending CN103604122A (en) | 2013-12-03 | 2013-12-03 | Multichannel pulverized coal burner |
Country Status (1)
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|---|---|
| CN (1) | CN103604122A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2529083Y (en) * | 2002-04-02 | 2003-01-01 | 王姝森 | Rotary kiln five-duct coal burner |
| CN2658581Y (en) * | 2003-08-07 | 2004-11-24 | 天津水泥工业设计研究院 | Four-duct pulverized-coal burner for cement rotary kiln |
| CN200952703Y (en) * | 2006-09-15 | 2007-09-26 | 济南山水水泥技术开发有限公司 | Coal burner fed from center |
| CN201129722Y (en) * | 2007-10-18 | 2008-10-08 | 万大龙 | Five-channel coal-powder combustor for cement rotary kiln |
| CN201575459U (en) * | 2009-08-14 | 2010-09-08 | 胡文俊 | Kiln multi-channel coal gas and pulverized coal composite firing high-speed combustor |
| CN202835346U (en) * | 2012-08-23 | 2013-03-27 | 上海三融环保工程有限公司 | Burning denitration burner installed in cement decomposing furnace under lean oxygen atmosphere |
| CN203586197U (en) * | 2013-12-03 | 2014-05-07 | 中建材（合肥）热工装备科技有限公司 | Multichannel pulverized coal burner |
-
2013
- 2013-12-03 CN CN201310635311.0A patent/CN103604122A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2529083Y (en) * | 2002-04-02 | 2003-01-01 | 王姝森 | Rotary kiln five-duct coal burner |
| CN2658581Y (en) * | 2003-08-07 | 2004-11-24 | 天津水泥工业设计研究院 | Four-duct pulverized-coal burner for cement rotary kiln |
| CN200952703Y (en) * | 2006-09-15 | 2007-09-26 | 济南山水水泥技术开发有限公司 | Coal burner fed from center |
| CN201129722Y (en) * | 2007-10-18 | 2008-10-08 | 万大龙 | Five-channel coal-powder combustor for cement rotary kiln |
| CN201575459U (en) * | 2009-08-14 | 2010-09-08 | 胡文俊 | Kiln multi-channel coal gas and pulverized coal composite firing high-speed combustor |
| CN202835346U (en) * | 2012-08-23 | 2013-03-27 | 上海三融环保工程有限公司 | Burning denitration burner installed in cement decomposing furnace under lean oxygen atmosphere |
| CN203586197U (en) * | 2013-12-03 | 2014-05-07 | 中建材（合肥）热工装备科技有限公司 | Multichannel pulverized coal burner |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140226 |