JPH08226615A - Pulverized coal fired burner - Google Patents
Pulverized coal fired burnerInfo
- Publication number
- JPH08226615A JPH08226615A JP3356495A JP3356495A JPH08226615A JP H08226615 A JPH08226615 A JP H08226615A JP 3356495 A JP3356495 A JP 3356495A JP 3356495 A JP3356495 A JP 3356495A JP H08226615 A JPH08226615 A JP H08226615A
- Authority
- JP
- Japan
- Prior art keywords
- pulverized coal
- nozzle
- ignition
- burner
- air
- 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.)
- Pending
Links
- 239000003245 coal Substances 0.000 title claims abstract description 36
- 239000003381 stabilizer Substances 0.000 claims abstract description 13
- 239000000446 fuel Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 239000000295 fuel oil Substances 0.000 abstract description 13
- 238000002347 injection Methods 0.000 abstract description 6
- 239000007924 injection Substances 0.000 abstract description 6
- 230000000087 stabilizing effect Effects 0.000 abstract description 6
- 238000002485 combustion reaction Methods 0.000 abstract description 5
- 239000003921 oil Substances 0.000 abstract description 5
- 238000009792 diffusion process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Combustion Of Fluid Fuel (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は固体燃料焚きボイラ等に
設置される微粉炭焚きバーナの改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a pulverized coal burning burner installed in a solid fuel burning boiler or the like.
【０００２】[0002]
【従来の技術】図４は従来の微粉炭焚きバーナの一例を
示す正面図である。これは保炎器（０５）を有する角型
断面の微粉炭ノズル（０４）の周囲にコール２次空気ポ
ート（０６）を設け、その下方に重油ノズルガン（０
１）とオイル２次空気ポート（０３）を配置したもので
ある。（０２）は着火安定ディフューザである。2. Description of the Related Art FIG. 4 is a front view showing an example of a conventional pulverized coal burning burner. This is provided with a coal secondary air port (06) around a pulverized coal nozzle (04) having a square cross section having a flame stabilizer (05), and a heavy oil nozzle gun (0) below the port.
1) and the oil secondary air port (03) are arranged. (02) is an ignition stable diffuser.
【０００３】[0003]
【発明が解決しようとする課題】前記従来の微粉炭焚き
バーナには次のような解決すべき課題があった。The conventional pulverized coal burning burner has the following problems to be solved.
【０００４】 微粉炭バーナノズルと重油ノズルが上
下別置になっているので、バーナ全体の高さが高くなっ
ていた。Since the pulverized coal burner nozzle and the heavy oil nozzle are placed separately on the upper and lower sides, the overall height of the burner is high.
【０００５】 微粉炭バーナノズルは角型で、空気と
の接触面積をできるだけ大きくとるようにしているが、
バーナ管曲げ等の関係もあってバーナ幅についてはある
限度値があった。The pulverized coal burner nozzle has a square shape and is designed to have a contact area with air as large as possible.
There was a certain limit value for the burner width due to the bending of the burner tube.
【０００６】[0006]
【課題を解決するための手段】本発明者は、前記従来の
課題を解決するために、液体燃料を水平方向に噴出させ
るノズルガンと、上記ノズルガンの燃料噴出口の直後に
ノズルガン軸線に直交して取付けられた横長長方形の着
火安定板と、上記ノズルガンおよび上記着火安定板を囲
んで設けられた横長長方形断面の空気噴出ポートと、上
記空気噴出ポートを囲んで設けられ、先端部に末広がり
形状の保炎器を有する横長長方形断面の微粉炭ノズル
と、上記微粉炭ノズルを囲んで設けられた上記とは別の
横長長方形断面の空気噴出ポートとを具えたことを特徴
とする微粉炭焚きバーナを提案するものである。In order to solve the above-mentioned conventional problems, the present inventor has proposed a nozzle gun for ejecting liquid fuel in a horizontal direction and a nozzle gun orthogonal to the nozzle gun axis immediately after a fuel ejection port of the nozzle gun. The attached horizontally-long rectangular ignition stabilizer, the air ejection port of the horizontally-long rectangular cross section that surrounds the nozzle gun and the ignition stabilizer, and the air ejection port that surrounds the air ejection port and has a divergent shape at the tip. Proposed pulverized coal burning burner characterized by comprising a pulverized coal nozzle having a horizontally long rectangular cross section having a flamer and an air ejection port having a horizontally elongated rectangular cross section different from the above and provided surrounding the pulverized coal nozzle. To do.
【０００７】[0007]
【作用】本発明は前記のとおり構成され、液体燃料を水
平方向に噴出させるノズルガンの燃料噴出口の直後にノ
ズルガン軸線に直交して横長長方形の着火安定板が取付
けられ、それらノズルガンおよび上記着火安定板を囲ん
で横長長方形断面の空気噴出ポートが設けられているの
で、液体燃料燃焼部では火炎安定板により安定な火炎渦
が生じ、着火を安定させる。そしてその火炎は、水平方
向に平べったい火炎となり、上下火炎の干渉が少なくな
る。The present invention is constructed as described above, and an ignition stabilizing plate having a horizontally long rectangle is attached right after the fuel injection port of the nozzle gun for ejecting the liquid fuel in the horizontal direction at right angles to the axis of the nozzle gun. Since the air ejection port having a horizontally long rectangular cross section is provided so as to surround the plate, a stable flame vortex is generated by the flame stabilizing plate in the liquid fuel combustion section to stabilize ignition. Then, the flame becomes a flat flame in the horizontal direction, and the interference between the upper and lower flames is reduced.
【０００８】本発明ではまた、上記空気噴出ポートを囲
んで、先端部に末広がり形状の保炎器を有する横長長方
形断面の微粉炭ノズルが設けられ、その微粉炭ノズルを
囲んで、上記とは別の横長長方形断面の空気噴出ポート
が設けられているので、微粉炭燃焼部では、同じ幅の従
来のバーナと比べると、内側にも空気と接触する部分が
生じ、空気との拡散が促進されて燃焼性が向上する。ま
た着火に関しては、空気と接触する部分全部に保炎器を
有するので、安定な火炎渦が形成されて着火が保持され
る。Further, according to the present invention, a pulverized coal nozzle having a horizontally long rectangular cross-section having a flame stabilizer having a diverging shape at the tip end is provided surrounding the air ejection port, and the pulverized coal nozzle is surrounded and is different from the above. Since an air ejection port with a horizontally long rectangular cross section is provided, the pulverized coal combustion section has a portion that comes into contact with air even inside compared to a conventional burner of the same width, which promotes diffusion with air. Combustibility is improved. Further, regarding ignition, since the flame stabilizer is provided in all the portions that come into contact with air, a stable flame vortex is formed and ignition is maintained.
【０００９】更に本発明では、液体燃料バーナが微粉炭
バーナの中に組込まれた形になっているので、バーナ全
体の高さが低くなる。Further, according to the present invention, since the liquid fuel burner is incorporated in the pulverized coal burner, the overall height of the burner becomes low.
【００１０】[0010]
【実施例】図１は本発明の一実施例を示す正面図、図２
は図１のII−II矢視水平断面図、図３は図１の III−II
I 矢視縦断側面図である。1 is a front view showing an embodiment of the present invention, FIG.
1 is a horizontal sectional view taken along the line II-II in FIG. 1, and FIG. 3 is a line III-II in FIG.
FIG. 1 is a vertical sectional side view taken along the arrow I.
【００１１】本実施例の微粉炭焚きバーナでは、中央に
重油ノズルガン（１）を置く。これは、先端の重油噴出
部が水平方向に噴射するようにチップ穴を設計してあ
る。着火安定板（２）も横に細長い角型で、渦を形成し
て着火を安定させる。重油ノズルガン（１）の周囲には
空気噴出ポート（３）を設け、オイル２次空気を供給す
る。この空気噴出ポート（３）から噴出する空気は、微
粉炭燃焼の場合、内側からのコール２次空気として作用
する。この空気噴出ポート（３）の周囲に微粉炭ノズル
（４）を設け、更にその周囲に上記とは別の空気噴出ポ
ート（６）を設けて、これにコール２次空気を供給す
る。微粉炭ノズル（４）の先端部には、全周に保炎器
（５）を形成して着火安定させるとともに、内外から広
い面積で空気と接触させて、拡散を促進し、燃焼性を向
上させる。In the pulverized coal burning burner of this embodiment, the heavy oil nozzle gun (1) is placed at the center. In this, the tip hole is designed so that the heavy oil jet portion at the tip jets horizontally. The ignition stabilizing plate (2) is also a laterally elongated rectangular shape and forms a vortex to stabilize ignition. An air ejection port (3) is provided around the heavy oil nozzle gun (1) to supply secondary oil oil. In the case of pulverized coal combustion, the air ejected from the air ejection port (3) acts as secondary coal air from the inside. A pulverized coal nozzle (4) is provided around the air ejection port (3), and an air ejection port (6) different from the above is provided around the pulverized coal nozzle (4) to supply the secondary coal air. At the tip of the pulverized coal nozzle (4), a flame stabilizer (5) is formed on the entire circumference to stabilize ignition and contact with air over a wide area from inside and outside to promote diffusion and improve combustibility. Let
【００１２】[0012]
【発明の効果】本発明においては、微粉炭バーナに重油
バーナを一体に組込むことにより、バーナ高さを低減で
きた。また重油バーナの周囲に微粉炭バーナを設置する
ことにより、微粉炭噴流と空気との接触面積が増大し燃
焼性が向上した。According to the present invention, the burner height can be reduced by integrally incorporating the heavy oil burner into the pulverized coal burner. Moreover, by installing the pulverized coal burner around the heavy oil burner, the contact area between the pulverized coal jet and the air was increased and the combustibility was improved.
【図１】図１は本発明の一実施例を示す正面図である。FIG. 1 is a front view showing an embodiment of the present invention.
【図２】図２は図１のII−II矢視水平断面図である。FIG. 2 is a horizontal sectional view taken along the line II-II of FIG.
【図３】図３は図１の III−III 矢視縦断側面図であ
る。FIG. 3 is a vertical sectional side view taken along the line III-III of FIG.
【図４】図４は従来の微粉炭焚きバーナの一例を示す正
面図である。FIG. 4 is a front view showing an example of a conventional pulverized coal burning burner.
【符号の説明】 （０１） 重油ノズルガン （０２） 着火安定ディフューザ （０３） オイル２次空気ポート （０４） 微粉炭ノズル （０５） 保炎器 （０６） コール２次空気ポート （１） 重油ノズルガン （２） 着火安定板 （３） 空気噴出ポート （４） 微粉炭ノズル （５） 保炎器（保炎板） （６） 空気噴出ポート[Description of symbols] (01) Heavy oil nozzle gun (02) Ignition stabilization diffuser (03) Oil secondary air port (04) Pulverized coal nozzle (05) Flame stabilizer (06) Cole secondary air port (1) Heavy oil nozzle gun ( 2) Ignition stabilizer (3) Air ejection port (4) Pulverized coal nozzle (5) Flame stabilizer (flame retaining plate) (6) Air ejection port
Claims (1)
ガンと、上記ノズルガンの燃料噴出口の直後にノズルガ
ン軸線に直交して取付けられた横長長方形の着火安定板
と、上記ノズルガンおよび上記着火安定板を囲んで設け
られた横長長方形断面の空気噴出ポートと、上記空気噴
出ポートを囲んで設けられ、先端部に末広がり形状の保
炎器を有する横長長方形断面の微粉炭ノズルと、上記微
粉炭ノズルを囲んで設けられた上記とは別の横長長方形
断面の空気噴出ポートとを具えたことを特徴とする微粉
炭焚きバーナ。1. A nozzle gun for ejecting liquid fuel in a horizontal direction, an ignition stabilizer of a horizontally long rectangular shape which is mounted immediately after a fuel ejection port of the nozzle gun at right angles to the axis of the nozzle gun, the nozzle gun and the ignition stabilizer. Surrounding the pulverized coal nozzle having a horizontally long rectangular cross-section and a pulverized coal nozzle having a horizontally elongated rectangular cross-section, which is provided so as to surround the air ejection port and the air ejection port, and which has a flame stabilizer with a diverging shape at the tip. A pulverized coal burning burner characterized in that it is provided with an air ejection port having a horizontally long rectangular cross-section different from the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3356495A JPH08226615A (en) | 1995-02-22 | 1995-02-22 | Pulverized coal fired burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3356495A JPH08226615A (en) | 1995-02-22 | 1995-02-22 | Pulverized coal fired burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08226615A true JPH08226615A (en) | 1996-09-03 |
Family
ID=12390050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3356495A Pending JPH08226615A (en) | 1995-02-22 | 1995-02-22 | Pulverized coal fired burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08226615A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003019079A1 (en) * | 2001-08-27 | 2003-03-06 | Aisheng Wang | Coal-burning boiler's ignition burner |
| WO2008038426A1 (en) | 2006-09-27 | 2008-04-03 | Babcock-Hitachi Kabushiki Kaisha | Burner, and combustion equipment and boiler comprising burner |
| JP2012122653A (en) * | 2010-12-07 | 2012-06-28 | Mitsubishi Heavy Ind Ltd | Combustion burner |
| WO2013073366A1 (en) * | 2011-11-16 | 2013-05-23 | 三菱重工業株式会社 | Oil-fired burner, solid fuel-fired burner unit and solid fuel-fired boiler |
| JP2015072118A (en) * | 2014-11-26 | 2015-04-16 | 三菱重工業株式会社 | Oil firing burner, solid fuel firing burner unit and boiler for solid fuel firing |
| WO2018150701A1 (en) * | 2017-02-17 | 2018-08-23 | 三菱日立パワーシステムズ株式会社 | Combustion burner and boiler with same |
| JP2021001700A (en) * | 2019-06-20 | 2021-01-07 | 三菱パワー株式会社 | Nozzle, and boiler comprising nozzle |
-
1995
- 1995-02-22 JP JP3356495A patent/JPH08226615A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003019079A1 (en) * | 2001-08-27 | 2003-03-06 | Aisheng Wang | Coal-burning boiler's ignition burner |
| GB2396207A (en) * | 2001-08-27 | 2004-06-16 | Aisheng Wang | Coal-burning boiler's ignition burner |
| GB2396207B (en) * | 2001-08-27 | 2005-07-20 | Aisheng Wang | Coal burner ignition and burning apparatus |
| US7021222B2 (en) | 2001-08-27 | 2006-04-04 | Aisheng Wang | Coal-burning boiler's ignition burner |
| WO2008038426A1 (en) | 2006-09-27 | 2008-04-03 | Babcock-Hitachi Kabushiki Kaisha | Burner, and combustion equipment and boiler comprising burner |
| JP2012122653A (en) * | 2010-12-07 | 2012-06-28 | Mitsubishi Heavy Ind Ltd | Combustion burner |
| KR20140078741A (en) * | 2011-11-16 | 2014-06-25 | 미츠비시 쥬고교 가부시키가이샤 | Oil-fired burner, solid fuel-fired burner unit and solid fuel-fired boiler |
| JP2013104642A (en) * | 2011-11-16 | 2013-05-30 | Mitsubishi Heavy Ind Ltd | Oil-fired burner, solid fuel-fired burner unit, and solid fuel-fired boiler |
| WO2013073366A1 (en) * | 2011-11-16 | 2013-05-23 | 三菱重工業株式会社 | Oil-fired burner, solid fuel-fired burner unit and solid fuel-fired boiler |
| CN103946634A (en) * | 2011-11-16 | 2014-07-23 | 三菱重工业株式会社 | Oil burners, solid fuel incineration burner units and solid fuel incineration boilers |
| EP2781834A4 (en) * | 2011-11-16 | 2015-06-03 | Mitsubishi Heavy Ind Ltd | Oil-fired burner, solid fuel-fired burner unit and solid fuel-fired boiler |
| CN103946634B (en) * | 2011-11-16 | 2016-03-23 | 三菱重工业株式会社 | Oil burners, solid fuel incineration burner units and solid fuel incineration boilers |
| US9702545B2 (en) | 2011-11-16 | 2017-07-11 | Mitsubishi Heavy Industries, Ltd. | Oil-fired burner, solid fuel-fired burner unit, and solid fuel-fired boiler |
| JP2015072118A (en) * | 2014-11-26 | 2015-04-16 | 三菱重工業株式会社 | Oil firing burner, solid fuel firing burner unit and boiler for solid fuel firing |
| WO2018150701A1 (en) * | 2017-02-17 | 2018-08-23 | 三菱日立パワーシステムズ株式会社 | Combustion burner and boiler with same |
| JP2018132277A (en) * | 2017-02-17 | 2018-08-23 | 三菱日立パワーシステムズ株式会社 | Combustion burner and boiler including the same |
| JP2021001700A (en) * | 2019-06-20 | 2021-01-07 | 三菱パワー株式会社 | Nozzle, and boiler comprising nozzle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20021112 |