CN102777892B - The burner arrangement method of station boiler and arrangement - Google Patents
The burner arrangement method of station boiler and arrangement Download PDFInfo
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- CN102777892B CN102777892B CN201210276828.0A CN201210276828A CN102777892B CN 102777892 B CN102777892 B CN 102777892B CN 201210276828 A CN201210276828 A CN 201210276828A CN 102777892 B CN102777892 B CN 102777892B
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Abstract
The invention discloses a kind of burner arrangement method and arrangement of station boiler, the method adopts tangential firing to arrange coal burner with the mode of opposed firing phase tuberculosis.First beneficial effect of the present invention is embodied in and solves boiler combustion stability and economy problems, simultaneously less NOx emission.Through large quantity research and the calculating of applicant, although find tangential firing mode better economy, NOx discharge is lower, and combustion stability is poor, if having combustion stability better and flame support is formed to its burning, then can give full play to tangential firing feature.Symmetrical combustion mode due to single burner stable combustion ability comparatively strong, integral combustion stability is better, but due to fire stroke shorter, combustion economization is poor, the localized high temperature regions formed by single burner relatively high power, causes NOx emission higher.As can be seen here, if in conjunction with the advantage of two kinds of combustion systems, a kind of new combustion system can be formed, can reach preferably combustion efficiency.
Description
Technical field
The present invention relates to a kind of burner arrangement method and arrangement of station boiler, belong to boiler combustion and design field.
Background technology
The main combustion system of current station boiler is the circle of contact and the two kinds of modes that liquidate.The circle of contact has quadrangle tangential circle and the two circle of contact two kinds of modes of burner hearth; Symmetry has front-back wall horizontal symmetrical and the symmetrical two kinds of modes of W flame.The circle of contact and the two kinds of combustion systems that liquidate respectively have pluses and minuses.The top downstream of corner tangential firing supports mutually and forms stable combustion flame, and flame rotates and makes flame travel long in stove, and combustion economization is higher, and NOx content is lower simultaneously; But the antijamming capability of burning is lower, the furnace exit temperature both sides deviation simultaneously brought because of tangential firing is larger.The parallel burning of each burner of opposed firing, interacts little, and single burner independent burning stability is stronger, furnace exit temperature both sides deviation is less, but due to symmetrical combustion flame travel partially short, combustion economization is poor, simultaneously because partial combustion intensity is large, NOx content is high.
Summary of the invention
The technical problem to be solved in the present invention is, provides one can improve boiler combustion stability and economy, reduces burner arrangement method and the arrangement of the station boiler of NOx emission, can overcome the deficiencies in the prior art.
Technical scheme of the present invention is: the burner arrangement method of station boiler adopts tangential firing to arrange coal burner with the mode of opposed firing phase tuberculosis.
Tangential firing is positioned at burner hearth center, forms a quadrangle tangential circle by four coal burners being positioned at burner hearth center; Opposed firing is positioned at burner hearth both sides, and every side can arrange one group or two groups of symmetrical coal burners.
Coal burner is arranged on the front-back wall of burner hearth.
The coal burner be arranged on the front-back wall of burner hearth is 3-5 layer according to boiler capacity.
The burner arrangement structure of station boiler, it comprises the burner hearth of station boiler, the front-back wall of burner hearth is inserted with coal burner, installs four coal burners at the centre bit of burner hearth front-back wall and form a circle of contact, one group or two groups of symmetrical coal burners are set in every side of burner hearth front-back wall.
The number of plies being arranged on the coal burner on the front-back wall of burner hearth is 3-5 layer.
Compared with the prior art, first beneficial effect of the present invention is embodied in and solves boiler combustion stability and economy problems, simultaneously less NOx emission.Through large quantity research and the calculating of applicant, although find tangential firing mode better economy, NOx discharge is lower, and combustion stability is poor, if having combustion stability better and flame support is formed to its burning, then can give full play to tangential firing feature.Symmetrical combustion mode due to single burner stable combustion ability comparatively strong, integral combustion stability is better, but due to fire stroke shorter, combustion economization is poor, the localized high temperature regions formed by single burner relatively high power, causes NOx emission higher.As can be seen here, if in conjunction with the advantage of two kinds of combustion systems, a kind of new combustion system can be formed, can reach preferably combustion efficiency.
Simultaneously the method for arranging of this coal burner and mode also have the following advantages:
1. efficiency of combustion is high, and due to the tangential firing mode at burner hearth center, ensure that the breeze airflow stroke that burning is overall, efficiency of combustion is ensured.
2. combustion stability is high, and because burner hearth both sides are symmetrical combustion mode, symmetrical combustion device single burner stable combustion ability is strong, forms strong support, add the antijamming capability of burner hearth entirety to the tangential firing mode at burner hearth center.
3.NOx discharge capacity reduces, and because burner hearth integral combustion mode is circle of contact state, the combustion-gas flow of rotation avoids burning local high-temperature state, is conducive to reducing NOx discharge.
In sum, after adopting combustion system of the present invention, can be significantly cost-saving and reduce the discharge of NOx pollutant, there is good economic worth and use value.With 600MW unit boiler, coal-fired V
dafbe 20% to compare for example:
| Project | Boiler efficiency | Combustion stability | NOx emission |
| Tangential firing | 92% | Low | 600 mg/Nm 3 |
| Symmetrical combustion | 91% | High | 800 mg/Nm 3 |
| Circle of contact symmetrical junction combination burning | 92% | High | 500 mg/Nm 3 |
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
The embodiment of the present invention: as shown in Figure 1, the burner arrangement method of station boiler adopts tangential firing to arrange coal burner with the mode of opposed firing phase tuberculosis.Concrete grammar is that tangential firing is positioned at burner hearth center, forms a corner tangential firing technology by four coal burners being positioned at burner hearth center; Opposed firing is positioned at burner hearth both sides, and every side can arrange one group or two groups of symmetrical coal burners, forms opposed firing technology.
The burner arrangement structure of station boiler is: body is provided with coal burner 2 on the front-back wall of burner hearth 1, install four coal burners 2 at the centre bit of burner hearth 1 front-back wall and form a circle of contact, form corner tangential firing technical pattern, one group or two groups of symmetrical coal burners 2 are set in every side of burner hearth 1 front-back wall simultaneously, form opposed firing technical pattern.
The number of plies being arranged on the coal burner 2 on the front-back wall of burner hearth 1 is 3-5 layer, and specific layer is several determines according to boiler capacity.
Claims (5)
1. a burner arrangement method for station boiler, is characterized in that: the method is that the mode adopting tangential firing to combine with opposed firing arranges coal burner; Tangential firing is positioned at burner hearth center, forms a quadrangle tangential circle by four coal burners being positioned at burner hearth center; Opposed firing is positioned at burner hearth both sides, and every side can arrange one group or two groups of symmetrical coal burners.
2. the combustion method of station boiler according to claim 1, is characterized in that: coal burner is arranged on the front-back wall of burner hearth.
3. the combustion method of station boiler according to claim 1 and 2, is characterized in that: the coal burner be arranged on the front-back wall of burner hearth is 3-5 layer according to boiler capacity.
4. the burner arrangement structure of a station boiler, it comprises the burner hearth (1) of station boiler, the front-back wall of burner hearth (1) is provided with coal burner, it is characterized in that: four coal burners (2) are set in the center of burner hearth (1) front-back wall and form a circle of contact, one group or two groups of symmetrical coal burners (2) are set in every side of burner hearth (1) front-back wall.
5. the burner arrangement structure of station boiler according to claim 4, is characterized in that: the number of plies being arranged on the coal burner (2) on the front-back wall of burner hearth (1) is 3-5 layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210276828.0A CN102777892B (en) | 2012-08-06 | 2012-08-06 | The burner arrangement method of station boiler and arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210276828.0A CN102777892B (en) | 2012-08-06 | 2012-08-06 | The burner arrangement method of station boiler and arrangement |
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| Publication Number | Publication Date |
|---|---|
| CN102777892A CN102777892A (en) | 2012-11-14 |
| CN102777892B true CN102777892B (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210276828.0A Active CN102777892B (en) | 2012-08-06 | 2012-08-06 | The burner arrangement method of station boiler and arrangement |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106871113A (en) * | 2017-04-07 | 2017-06-20 | 贵州电网有限责任公司电力科学研究院 | A kind of system of selection of the burner model of the tangential firing mode station boiler that liquidates |
| CN106871112A (en) * | 2017-04-07 | 2017-06-20 | 贵州电网有限责任公司电力科学研究院 | A kind of burner and coal pulverizer matching process for being punched circle combustion system station boiler |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1807977A (en) * | 2006-02-21 | 2006-07-26 | 西安热工研究院有限公司 | Novel three-region two-stage overfire air arrangement mode for wall type boiler |
| CN202532467U (en) * | 2011-12-23 | 2012-11-14 | 上海锅炉厂有限公司 | Arrangement method of micro-oil ignition device |
| CN202835335U (en) * | 2012-08-06 | 2013-03-27 | 贵州电力试验研究院 | Burner arrangement structure of power station boiler |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08178203A (en) * | 1994-12-19 | 1996-07-12 | Babcock Hitachi Kk | Steam generator |
| JP2002243108A (en) * | 2001-02-19 | 2002-08-28 | Babcock Hitachi Kk | Mixed-fuel fired device of coal and biofuel and operating method thereof |
| US6773256B2 (en) * | 2002-02-05 | 2004-08-10 | Air Products And Chemicals, Inc. | Ultra low NOx burner for process heating |
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2012
- 2012-08-06 CN CN201210276828.0A patent/CN102777892B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1807977A (en) * | 2006-02-21 | 2006-07-26 | 西安热工研究院有限公司 | Novel three-region two-stage overfire air arrangement mode for wall type boiler |
| CN202532467U (en) * | 2011-12-23 | 2012-11-14 | 上海锅炉厂有限公司 | Arrangement method of micro-oil ignition device |
| CN202835335U (en) * | 2012-08-06 | 2013-03-27 | 贵州电力试验研究院 | Burner arrangement structure of power station boiler |
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| CN102777892A (en) | 2012-11-14 |
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