CN102679330A - Separation over-fire air-low NOx dense-light W-shaped flame combustion device - Google Patents
Separation over-fire air-low NOx dense-light W-shaped flame combustion device Download PDFInfo
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- CN102679330A CN102679330A CN2012101862302A CN201210186230A CN102679330A CN 102679330 A CN102679330 A CN 102679330A CN 2012101862302 A CN2012101862302 A CN 2012101862302A CN 201210186230 A CN201210186230 A CN 201210186230A CN 102679330 A CN102679330 A CN 102679330A
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Abstract
The invention discloses a separation over-fire air-low NOx dense-light W-shaped flame combustion device. In a traditional combustor technology, secondary air for combusting completely enters a hearth along with pulverized coal; and an old combustion technology has the defects of low combustion efficiency and high generation amount of NOx. The separation over-fire air-low NOx dense-light W-shaped flame combustion device comprises a combustor (1) arranged at the position of a furnace body shoulder, wherein the combustor is provided with a dense pulverized coal airflow pipe mouth (2) and a light pulverized coal airflow pipe mouth (3); the combustor is connected with a pulverized coal separator (4); an OFA (Over Fire Air) air duct mouth (5) is formed in the upper end of the combustor, which is close to the dense pulverized coal airflow pipe mouth; an oil gun (6) is arranged at the lower part of the combustor, which is close to the light pulverized coal airflow pipe mouth; and a secondary air deflector (7) is arranged below the oil gun. The separation over-fire air-low NOx dense-light W-shaped flame combustion device disclosed by the invention is used for a boiler combusting device.
Description
Technical field:
the present invention relates to the low deep or light W shape of the NOx flame combustion apparatus of a kind of separation after-flame wind.
Background technology:
The secondary wind of burning usefulness is all along with coal dust all carries out burner hearth in
burners in prior technology, old combustion technology, and burning of coal efficient is not high, NOx growing amount height.
Summary of the invention:
the purpose of this invention is to provide a kind ofly can make the burning of coal dust more abundant, and energy savings has satisfied country to the more and more stricter requirement of NOx discharging.
Above-mentioned purpose realizes through following technical scheme:
a kind of separation after-flame wind hangs down the deep or light W shape of NOx flame combustion apparatus; Its composition comprises: the burner that is contained in body of heater shoulder position; Described burner has the thick coal culm air-flow mouth of pipe and the thin powdered coal air-flow mouth of pipe, and described burner connects coal dust classifier, and OFA airduct mouth is being housed near the upper end of described thick coal culm airflow orifice; Near the bottom of described thin powdered coal airflow orifice oil gun is being housed, the secondary wind deflector is being housed below described oil gun.
described separation after-flame wind hangs down the deep or light W shape of NOx flame combustion apparatus; The described thick coal culm air-flow mouth of pipe and the described thin powdered coal air-flow mouth of pipe insert in the surrounding air mouth of pipe, and the secondary wind mouth of pipe on the arch is housed in the middle of the described thick coal culm air-flow mouth of pipe and the described thin powdered coal air-flow mouth of pipe.
Beneficial effect:
thick coal culm air-flow 1. of the present invention is arranged near burner hearth center one side, helps in time catching fire; Primary air velocity is low, and it is little to penetrate down the degree of depth, under secondary wind under interior secondary wind at a high speed, outer secondary wind, the arch that has a down dip injection successively, has guaranteed the following degree of depth of penetrating of thick coal culm air-flow, has realized again carrying out air feed gradually with burning simultaneously, has guaranteed coal dust after-flame and steady right.
the present invention be arranged in the thin powdered coal air-flow between thick coal culm air-flow and the front-back wall, realized bias combustion; Secondary air separating is inside and outside secondary wind, an arch secondary wind down, has realized the multiple fractionation burning, can guarantee low-nitrogen oxide discharging.
3. the present invention can effectively prevent slagging scorification being outer secondary wind near the front-back wall water-cooling wall.
Description of drawings:
accompanying drawing 1 is the structural representation of this product.
accompanying drawing 2 is the mounting structure sketch map of accompanying drawing 1.
The specific embodiment:
Embodiment 1:
a kind of separation after-flame wind hangs down the deep or light W shape of NOx flame combustion apparatus; Its composition comprises: the burner 1 that is contained in body of heater shoulder position; Described burner has the thick coal culm air-flow mouth of pipe 2 and the thin powdered coal air-flow mouth of pipe 3, and described burner connects coal dust classifier 4, and OFA airduct mouth 5 is being housed near the upper end of described thick coal culm airflow orifice; Near the bottom of described thin powdered coal airflow orifice oil gun 6 is being housed, secondary wind deflector 7 is being housed below described oil gun.
Embodiment 2:
Embodiment 3:
Claims (2)
1. one kind is separated the low deep or light W shape of the NOx flame combustion apparatus of after-flame wind; Its composition comprises: the burner that is contained in body of heater shoulder position; It is characterized in that: described burner has the thick coal culm air-flow mouth of pipe and the thin powdered coal air-flow mouth of pipe, and described burner connects coal dust classifier, and OFA airduct mouth is being housed near the upper end of described thick coal culm airflow orifice; Near the bottom of described thin powdered coal airflow orifice oil gun is being housed, the secondary wind deflector is being housed below described oil gun.
2. separation after-flame wind according to claim 1 hangs down the deep or light W shape of NOx flame combustion apparatus; It is characterized in that: the described thick coal culm air-flow mouth of pipe and the described thin powdered coal air-flow mouth of pipe insert in the surrounding air mouth of pipe, and the secondary wind mouth of pipe on the arch is housed in the middle of the described thick coal culm air-flow mouth of pipe and the described thin powdered coal air-flow mouth of pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101862302A CN102679330A (en) | 2012-06-07 | 2012-06-07 | Separation over-fire air-low NOx dense-light W-shaped flame combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101862302A CN102679330A (en) | 2012-06-07 | 2012-06-07 | Separation over-fire air-low NOx dense-light W-shaped flame combustion device |
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| Publication Number | Publication Date |
|---|---|
| CN102679330A true CN102679330A (en) | 2012-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101862302A Pending CN102679330A (en) | 2012-06-07 | 2012-06-07 | Separation over-fire air-low NOx dense-light W-shaped flame combustion device |
Country Status (1)
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| CN (1) | CN102679330A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748107A (en) * | 2013-12-30 | 2015-07-01 | 烟台龙源电力技术股份有限公司 | Combustion device of W flame boiler and W flame boiler |
| CN104881714A (en) * | 2015-05-25 | 2015-09-02 | 上海发电设备成套设计研究院 | Boiler high-temperature heating surface pendant to pendant heat deviation module predication method |
| CN105864751B (en) * | 2015-01-22 | 2018-07-06 | 烟台龙源电力技术股份有限公司 | The burner of W flame boiler and W flame boiler |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0268403A (en) * | 1988-09-02 | 1990-03-07 | Babcock Hitachi Kk | Solid fuel burner |
| JPH11211013A (en) * | 1998-01-30 | 1999-08-06 | Hitachi Ltd | Pulverized coal combustion burner and combustion method thereof |
| CN1707160A (en) * | 2005-05-23 | 2005-12-14 | 哈尔滨工业大学 | W-shape flame furnace with gradation coal burner |
| CN1896592A (en) * | 2006-05-26 | 2007-01-17 | 哈尔滨工业大学 | W-type flame incinerator by low-NOx coal powder |
| CN2913870Y (en) * | 2006-05-26 | 2007-06-20 | 哈尔滨工业大学 | Underarch secondary-wind downward-bias W-type flame furnace |
| CN101832549A (en) * | 2010-04-19 | 2010-09-15 | 哈尔滨工业大学 | Multi-ejection grading combustion method and W flame boiler device for realizing same |
| CN102297418A (en) * | 2011-08-12 | 2011-12-28 | 哈尔滨工业大学 | Thick and thin pulverized coal nozzle interlacedly arranged W-flame boiler with multiple ejections and staged combustion |
-
2012
- 2012-06-07 CN CN2012101862302A patent/CN102679330A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0268403A (en) * | 1988-09-02 | 1990-03-07 | Babcock Hitachi Kk | Solid fuel burner |
| JPH11211013A (en) * | 1998-01-30 | 1999-08-06 | Hitachi Ltd | Pulverized coal combustion burner and combustion method thereof |
| CN1707160A (en) * | 2005-05-23 | 2005-12-14 | 哈尔滨工业大学 | W-shape flame furnace with gradation coal burner |
| CN1896592A (en) * | 2006-05-26 | 2007-01-17 | 哈尔滨工业大学 | W-type flame incinerator by low-NOx coal powder |
| CN2913870Y (en) * | 2006-05-26 | 2007-06-20 | 哈尔滨工业大学 | Underarch secondary-wind downward-bias W-type flame furnace |
| CN101832549A (en) * | 2010-04-19 | 2010-09-15 | 哈尔滨工业大学 | Multi-ejection grading combustion method and W flame boiler device for realizing same |
| CN102297418A (en) * | 2011-08-12 | 2011-12-28 | 哈尔滨工业大学 | Thick and thin pulverized coal nozzle interlacedly arranged W-flame boiler with multiple ejections and staged combustion |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748107A (en) * | 2013-12-30 | 2015-07-01 | 烟台龙源电力技术股份有限公司 | Combustion device of W flame boiler and W flame boiler |
| CN105864751B (en) * | 2015-01-22 | 2018-07-06 | 烟台龙源电力技术股份有限公司 | The burner of W flame boiler and W flame boiler |
| CN104881714A (en) * | 2015-05-25 | 2015-09-02 | 上海发电设备成套设计研究院 | Boiler high-temperature heating surface pendant to pendant heat deviation module predication method |
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Application publication date: 20120919 |