CN102777893A - External secondary air adjusting method and structure for W-flame direct current boiler of double-air regulation burner - Google Patents
External secondary air adjusting method and structure for W-flame direct current boiler of double-air regulation burner Download PDFInfo
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- CN102777893A CN102777893A CN2012102767150A CN201210276715A CN102777893A CN 102777893 A CN102777893 A CN 102777893A CN 2012102767150 A CN2012102767150 A CN 2012102767150A CN 201210276715 A CN201210276715 A CN 201210276715A CN 102777893 A CN102777893 A CN 102777893A
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- secondary air
- outer secondary
- burner hearth
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Abstract
The invention discloses an external secondary air adjusting method and structure for a W-flame direct current boiler of a double-air adjusting burner. The method disclosed by the invention is characterized in that an external secondary air angle of each burner at the regions close to the two sides of a hearth is adjusted to be 65 degrees; the external secondary air angle of the burner at the region close to the center of the hearth is adjusted to be 55 degrees; and the external secondary air angle of each burner at the other regions in the hearth is adjusted to be 60 degrees. The method has the beneficial effects that a problem is put forward firstly, and the reason, found by the inventor by virtue of massive research and calculation, is that different positions of the hearth have different combustion requirements; slagging at the two sides of the hearth is required to be controlled, a smaller secondary air rotational flow is required to be controlled, so as to prevent a pulverized coal air flow from painting a wall, thus no slagging or deterioration is caused; the secondary air rotational flow at the center of the hearth is required to be increased, underscouring capacity is weakened, so as to prevent a flame at the center of the hearth from moving upward, and thus the water cooled wall at the middle part is prevented from being overheated; and the other burners are arranged according to 60 degrees with better economy, so as to ensure the whole combustion economy of the boiler.
Description
Technical field
The present invention relates to a kind of two outer secondary wind method of adjustment of wind combustor W flame direct current cooker and structure thereof of transferring, belong to direct current cooker burning adjustment field.
Background technology
Two accent wind combustor W flame direct current cooker combustion systems are the front-back wall opposed firing, and the subject matter that the burning of W flame boiler exists is the contradiction between combustion stability, economy and the slagging scorification.There is the problem of the easy overtemperature of water-cooling wall in direct current cooker.The outer secondary wind angle of two accent wind combustors has considerable influence to burning.Outer secondary air flow accounts for more than 65% of total blast volume.Outer secondary wind angle strengthens, and the air-flow rigidity increases, and is strong towards ability down.Outer secondary wind angle reduces, and the air-flow swirl strength strengthens, and weakens towards ability down.Two accent wind combustor W flame direct current cookers are owing to burn with cyclone mode, the boiler combustion better economy, but in order to increase combustion stability; Lower hearth do not fire be with more; The easy slagging scorification of side wall and aileron, middle water-wall tube is big because of combustion intensity in addition, easily overtemperature.General 60 ° of the manufacturer's recommended values of pressing of outer secondary wind angle power plant's operation, though economy is guaranteed under 60 ° of conditions, boiler scaling and water-cooling wall overheating problem are outstanding.
Summary of the invention
The technical problem that the present invention will solve provides a kind of two outer secondary wind method of adjustment of wind combustor W flame direct current cooker and structures thereof of transferring that can solve contradiction between the two burning of accent wind combustor W flame direct current cooker economy, slagging scorification and the water-cooling wall overtemperatures, can overcome the deficiency of prior art.
Technical scheme of the present invention is: the outer secondary wind method of adjustment of two accent wind combustor W flame direct current cookers is that the outer secondary wind angle with the burner that leans on the burner hearth two side areas is 65 °; To lean on the outer secondary wind angle of the burner of burner hearth central area is 55 °; The outer secondary wind angle of all the other regional burners is 60 ° in the burner hearth.
Leaning on the burner quantity of burner hearth two side areas is four.
Leaning on the burner quantity of burner hearth central area is four.
The outer secondary wind of two accent wind combustor W flame direct current cookers is provided with structure, and it comprises burner hearth, in burner hearth, is provided with burner, and the outer secondary wind angle that is positioned at four side burners of burner hearth both sides is 65 °; The outer secondary wind angle that is positioned at four central burner at burner hearth center is 55 °; The outer secondary wind angle of all the other burners in the burner hearth is 60 °.
The quantity of all the other burners is 12-16.
Compare with prior art, beneficial effect of the present invention at first is embodied in the proposition of problem, through applicant's big quantity research and calculating, finds that its reason is that the burner hearth diverse location has different requirement to burning.Slagging scorification will be controlled in the burner hearth both sides, should control less secondary wind eddy flow, in case breeze airflow is whitewashed a wall, slagging scorification is worsened.The burner hearth center should make the secondary wind eddy flow increase, and weakens under the secondary wind towards ability, so that move water-cooling wall overtemperature in the middle part of preventing on the flame at burner hearth center.All the other burners are then pressed 60 ° of settings of better economy, to guarantee the economy of boiler integral combustion.
Contrast before and after the outer secondary wind angle layout optimization:
| Project | Clinkering property | The water-cooling wall overtemperature | The burning economy |
| The unified 60 ° of layouts of outer secondary wind | Burner hearth four angle blade wall slagging scorification are serious | The easy overtemperature of middle part water-cooling wall | Because slagging scorification and overtemperature of tube wall, boiler must reduce load operation sometimes, the burning economy reduces |
| Outer secondary wind is by existing mode preferred arrangement | Burner hearth does not have pernicious slagging scorification phenomenon | Can avoid the water-cooling wall overheating problem | Boiler can be kept high load capacity stable operation, and the burning economy is secure |
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the burner structure sketch map.
The specific embodiment
Embodiment: as shown in Figure 1, on the front-back wall of burner hearth 1, burner being installed, 2 is that side burner, 3 is that central burner, 4 is all the other burners among Fig. 1; Fig. 2 is the burner structure sketch map, and burner mainly comprises: outer secondary wind 5, interior secondary wind 6 and wind 7 of coal dust, understand said structure after, this pair transfers the outer secondary wind method of adjustment of wind combustor W flame direct current cooker to be:
It is 65 ° that a will lean on the outer secondary wind angle of the burner (side burner 2) of burner hearth two side areas, and wherein leaning on the burner quantity of burner hearth two side areas is four;
It is 55 ° that b will lean on the outer secondary wind angle of the burner (central burner 3) of burner hearth central area, and leaning on the burner quantity of burner hearth central area is four.
The outer secondary wind angle of all the other regional burners (all the other burners 4) is 60 ° in the c burner hearth.
Like Fig. 1, in burner hearth 1, be provided with 24 burners, the outer secondary wind angle that is positioned at four side burners 2 of burner hearth 1 both sides is 65 °; The outer secondary wind angle that is positioned at four central burner 3 at burner hearth 1 center is 55 °; The outer secondary wind angle of all the other 16 burners 4 in the burner hearth 1 is 60 °.The quantity of all the other burners 4 is 12-16, specifically decides according to the size of burner hearth 1.
Claims (5)
1. two outer secondary wind method of adjustment of transferring wind combustor W flame direct current cookers is characterized in that: this method is that the outer secondary wind angle with the burner that leans on the burner hearth two side areas is 65 °; To lean on the outer secondary wind angle of the burner of burner hearth central area is 55 °; The outer secondary wind angle of all the other regional burners is 60 ° in the burner hearth.
2. two outer secondary wind method of adjustment of transferring wind combustor W flame direct current cooker according to claim 1, it is characterized in that: leaning on the burner quantity of burner hearth two side areas is four.
3. two outer secondary wind method of adjustment of transferring wind combustor W flame direct current cooker according to claim 1, it is characterized in that: leaning on the burner quantity of burner hearth central area is four.
4. two outer secondary wind of wind combustor W flame direct current cooker of transferring are provided with structure; It comprises burner hearth (1); In burner hearth (1), be provided with burner, it is characterized in that: the outer secondary wind angle that is positioned at four side burners (2) of burner hearth (1) both sides is 65 °; The outer secondary wind angle that is positioned at four central burner (3) at burner hearth (1) center is 55 °; The outer secondary wind angle of all the other burners (4) in the burner hearth (1) is 60 °.
5. two outer secondary wind of wind combustor W flame direct current cooker of transferring according to claim 4 is provided with structure, and it is characterized in that: the quantity of all the other burners (4) is 12-16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210276715.0A CN102777893B (en) | 2012-08-06 | 2012-08-06 | External secondary air adjusting method and structure for W-flame direct current boiler of double-air regulation burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210276715.0A CN102777893B (en) | 2012-08-06 | 2012-08-06 | External secondary air adjusting method and structure for W-flame direct current boiler of double-air regulation burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102777893A true CN102777893A (en) | 2012-11-14 |
| CN102777893B CN102777893B (en) | 2014-12-10 |
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| CN201210276715.0A Expired - Fee Related CN102777893B (en) | 2012-08-06 | 2012-08-06 | External secondary air adjusting method and structure for W-flame direct current boiler of double-air regulation burner |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152112A (en) * | 2016-08-08 | 2016-11-23 | 浙江大学 | A kind of non-uniform air distribution coal dust opposed firing burner |
| CN106287677A (en) * | 2016-08-09 | 2017-01-04 | 贵州电网有限责任公司电力科学研究院 | A kind of method of adjustment of W flame direct current cooker secondary wind |
| CN109931598A (en) * | 2019-03-11 | 2019-06-25 | 哈尔滨工业大学 | A kind of W flame boiler being disposed with turbulent burner and DC burner |
| CN115016576A (en) * | 2022-05-27 | 2022-09-06 | 国能河北沧东发电有限责任公司 | Reheat steam temperature control method and device, readable medium and electronic equipment |
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| CN101324340A (en) * | 2008-08-05 | 2008-12-17 | 贵州电力试验研究院 | Apparatus for adjusting secondary wind direction under W type flame oven arch |
| CN101324332A (en) * | 2008-08-05 | 2008-12-17 | 贵州电力试验研究院 | Method for regulating W type flame furnace secondary air chamber and secondary air chamber of W type flame furnace |
| US20110253066A1 (en) * | 2010-04-19 | 2011-10-20 | Zhengqi Li | W-staged flame boiler for multi-stage combustion with multi-ejection and its method thereof |
| CN102322631A (en) * | 2011-07-08 | 2012-01-18 | 贵州电力试验研究院 | Double-cyclone cylinder burner W-shaped flame boiler capable of stably burning pulverized coal |
| CN202692029U (en) * | 2012-08-06 | 2013-01-23 | 贵州电力试验研究院 | Outer secondary air adjusting structure of double air adjusting combustor W flame concurrent boiler |
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2012
- 2012-08-06 CN CN201210276715.0A patent/CN102777893B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101324340A (en) * | 2008-08-05 | 2008-12-17 | 贵州电力试验研究院 | Apparatus for adjusting secondary wind direction under W type flame oven arch |
| CN101324332A (en) * | 2008-08-05 | 2008-12-17 | 贵州电力试验研究院 | Method for regulating W type flame furnace secondary air chamber and secondary air chamber of W type flame furnace |
| US20110253066A1 (en) * | 2010-04-19 | 2011-10-20 | Zhengqi Li | W-staged flame boiler for multi-stage combustion with multi-ejection and its method thereof |
| WO2011130936A1 (en) * | 2010-04-19 | 2011-10-27 | 哈尔滨工业大学 | Staged combustion method with multiple injections and w-shaped flame boiler device for carrying out the same |
| GB2486630A (en) * | 2010-04-19 | 2012-06-27 | Harbin Inst Of Technology | W-shaped flame boiler for multi-stage combustion with multi-ejection and its method thereof |
| CN102322631A (en) * | 2011-07-08 | 2012-01-18 | 贵州电力试验研究院 | Double-cyclone cylinder burner W-shaped flame boiler capable of stably burning pulverized coal |
| CN202692029U (en) * | 2012-08-06 | 2013-01-23 | 贵州电力试验研究院 | Outer secondary air adjusting structure of double air adjusting combustor W flame concurrent boiler |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152112A (en) * | 2016-08-08 | 2016-11-23 | 浙江大学 | A kind of non-uniform air distribution coal dust opposed firing burner |
| CN106152112B (en) * | 2016-08-08 | 2018-06-19 | 浙江大学 | A kind of non-uniform air distribution coal dust opposed firing burner |
| CN106287677A (en) * | 2016-08-09 | 2017-01-04 | 贵州电网有限责任公司电力科学研究院 | A kind of method of adjustment of W flame direct current cooker secondary wind |
| CN106287677B (en) * | 2016-08-09 | 2019-04-02 | 贵州电网有限责任公司电力科学研究院 | A kind of method of adjustment of W flame direct current cooker Secondary Air |
| CN109931598A (en) * | 2019-03-11 | 2019-06-25 | 哈尔滨工业大学 | A kind of W flame boiler being disposed with turbulent burner and DC burner |
| CN115016576A (en) * | 2022-05-27 | 2022-09-06 | 国能河北沧东发电有限责任公司 | Reheat steam temperature control method and device, readable medium and electronic equipment |
| CN115016576B (en) * | 2022-05-27 | 2024-02-09 | 国能河北沧东发电有限责任公司 | Reheat steam temperature control method and device, readable medium and electronic equipment |
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| CN102777893B (en) | 2014-12-10 |
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