JPS5838684B2 - NOX reduction burner - Google Patents
NOX reduction burnerInfo
- Publication number
- JPS5838684B2 JPS5838684B2 JP12177775A JP12177775A JPS5838684B2 JP S5838684 B2 JPS5838684 B2 JP S5838684B2 JP 12177775 A JP12177775 A JP 12177775A JP 12177775 A JP12177775 A JP 12177775A JP S5838684 B2 JPS5838684 B2 JP S5838684B2
- Authority
- JP
- Japan
- Prior art keywords
- burner
- gas
- air
- independent
- nox reduction
- 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.)
- Expired
Links
Landscapes
- Combustion Of Fluid Fuel (AREA)
Description
【発明の詳細な説明】
この発明は排ガス中の窒素酸化物の量を低減させるバー
ナの構造に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a burner structure that reduces the amount of nitrogen oxides in exhaust gas.
バーナに要求される条件は、安定した火災の保持、燃料
の効果的燃焼、取扱いの容易等であるが、近時は排ガス
中の窒素酸化物（以下ＮＯｘと称する）の含有量の少い
ことが重要な条件とされている。The conditions required for a burner include stable fire maintenance, effective combustion of fuel, and ease of handling, but recently, the content of nitrogen oxides (hereinafter referred to as NOx) in the exhaust gas must be low. is considered an important condition.
このＮＯｘの低減のため種々な手段がとられているが、
既設のボイラへの適用等も考慮し、かつボイラ本体を改
造しないですむためにはバーナ自体の構造を変えること
が最も望ましいことである。Various measures have been taken to reduce this NOx, but
Considering application to existing boilers, etc., and in order to avoid modifying the boiler body, it is most desirable to change the structure of the burner itself.
ＮＯｘは窒素ガスと酸素ガスが存在して高温ふん囲気（
１２００〜１６００°Ｃ）にあるとき−酸化窒素（Ｎｏ
）が生じ、これが有害な二酸化窒素（ＮＯ２）に転化す
るとされている。NOx is produced by the presence of nitrogen gas and oxygen gas in high-temperature surrounding air (
1200-1600°C) - Nitrogen oxide (No.
), which is said to be converted into harmful nitrogen dioxide (NO2).
また高温になるほど多い量のＮＯが生成されることか知
られている。It is also known that the higher the temperature, the more NO is produced.
通常火炎温度は１４００〜１６００°Ｃとされており、
ＮＯｘの低減にはこの条件下にある時間即ち滞留時間を
少くし、かつ火炎温度を下げることが有効である。The normal flame temperature is 1400-1600°C.
In order to reduce NOx, it is effective to shorten the time under these conditions, that is, the residence time, and to lower the flame temperature.
この発明はかかる観点より、火炎分割による火炎温度の
低下、火炎を冷空気で包み火炎温度を低下さぜるバーナ
の構造を提案するものである。From this point of view, the present invention proposes a burner structure that reduces the flame temperature by dividing the flame and wraps the flame in cold air to reduce the flame temperature.
この発明にかかるバーナの構造をガスバーナに例をとり
以下図面により以下説明する。The structure of the burner according to the present invention will be explained below with reference to the drawings, taking a gas burner as an example.
燃焼ガスはガスリング１に供給され、これに接続する複
数個の独立ガスバーナ２の先端にあるガスバーナチップ
３を経由し火炉内に噴出して燃焼する。Combustion gas is supplied to the gas ring 1, passes through the gas burner tips 3 at the tips of a plurality of independent gas burners 2 connected to the gas ring 1, and is ejected into the furnace for combustion.
バーナ外箱４は火炉壁に設けたバーナスロート５の中心
とバーナ外箱中心を−にし、風箱６内に取付けられる。The burner outer box 4 is installed in a wind box 6 with the center of the burner throat 5 provided on the furnace wall and the center of the burner outer box set at -.
ガスバーナの中央には軽油又は重油燃焼の助燃バーナ７
か設げられ、起動時の使用、助燃等に使用される。In the center of the gas burner is an auxiliary combustion burner 7 that burns light oil or heavy oil.
It is used for startup, auxiliary combustion, etc.
ガスバーナ装置４の本体は隔壁８で仕切られ独立した空
気室９ａ、９ｂ、９ｃ、９ｄとそれぞれのスロート部を
形成する。The main body of the gas burner device 4 is partitioned by a partition wall 8 to form independent air chambers 9a, 9b, 9c, and 9d, and respective throat portions.
これらの空気室にはそれぞれ独立したガスバーナ２が設
けられる。Each of these air chambers is provided with an independent gas burner 2.
独立ガスバーナ２はガスリング１より分岐展出する管１
０の接続金属１１にガスバーナ２の軸管が廻転しつると
とくに装着される。The independent gas burner 2 has a pipe 1 branching out from the gas ring 1.
The shaft tube of the gas burner 2 is particularly attached to the connecting metal 11 of the gas burner 2 for rotation.
ガスバーナチップ３は第３図に示すととく矩形台形の面
に複数個のガス噴射孔１２を有し、断面が矩形をなすよ
うな火炎を形成する。As shown in FIG. 3, the gas burner chip 3 has a plurality of gas injection holes 12 on a rectangular trapezoidal surface, and forms a flame having a rectangular cross section.
ガスバーナの接続金属１１より展出する展出部１３には
指針１４が設けられ、この指針をガスバーナチップ３の
長軸方向１５と合せておくときは炉外から容易に火炎断
面の長軸方向１５を知ることができる。A pointer 14 is provided on the extending portion 13 extending from the connecting metal 11 of the gas burner, and when aligning this pointer with the longitudinal direction 15 of the gas burner chip 3, the flame cross section can be easily viewed from outside the furnace in the longitudinal direction 15. You can know.
ガスバーナ外箱４を仕切った空気室９ａ、ｓｂ、９ｃ、
９ｄにはそれぞれ独立した二次空気調整用スリーブ１６
を設け、バーナ中央部管路１８には空気調整用スリーブ
１７を設ける。Air chambers 9a, sb, 9c, which partition the gas burner outer box 4,
Separate secondary air adjustment sleeves 16 are provided at 9d.
An air adjustment sleeve 17 is provided in the burner central pipe line 18.
このようなガスバーナ構造にすることによりガスバーナ
の火炎断面長軸方向は任意の方向に独立してセットする
ことができ、それぞれの二次空気量は二次空気調整用ス
リーブで調整され渣た中央部管路１８には空気調整スリ
ーブ１７で調整された量の空気が送られ、分割火炎の形
成と空気過多領域、燃料過多領域を夫々形成することが
できかつ緩慢な燃焼をさせることができてＮＯｘ低減の
効果を収めるものである。By adopting such a gas burner structure, the long axis direction of the flame cross section of the gas burner can be independently set in any direction, and the amount of secondary air for each can be adjusted with the secondary air adjustment sleeve, The amount of air adjusted by the air adjustment sleeve 17 is sent to the pipe line 18, and it is possible to form a divided flame, an air-excess area, and a fuel-excess area, respectively, and to perform slow combustion, thereby reducing NOx. This is to achieve the effect of reduction.
要するにバーナ外箱を隔壁８で複数個の空気室に仕切り
、各空気室には矩形バーナチップを先端に有し、かつバ
ーナ軸は廻転と固定ができる独立バーナを設け、各空気
室に送入する空気量は独立したダンパーにより制御する
ことを特徴とするＮＯｘ低減バーナを提案することによ
りＮＯｘ低減の効果を奏するものである。In short, the burner outer box is divided into multiple air chambers by partition walls 8, and each air chamber has an independent burner with a rectangular burner tip at the tip and a burner shaft that can be rotated and fixed, and the air is fed into each air chamber. By proposing a NOx reduction burner characterized in that the amount of air is controlled by an independent damper, the NOx reduction effect can be achieved.
第１図はこの発明にかかるバーナ装置の縦断面図、第２
図は第１図のｌ−Ａ親図、第３図はバーナチップの正面
図ａと側面図すである。
１・・・・・・ガスリング、２・・・・・・独立ガスバ
ーナ、３・・・・・・ガスバーナチップ、４・・・・・
・バーナ外箱、５・・・・・・バーナスロート、６・・
・・・・風箱、７・・・・・・助燃バーナ、８・・・・
・・隔壁、９ａ、９ｂ、９ｃ、９ｄ・・・・・・空気室
、１０・・・・・・管、１１・・・・・・接続金具、１
２・・・・・・ガス噴射孔、１４・・・・・・指針、１
６・・・・・・二次空気調整用スリーブ、１７・−・・
・・空気調整用スリーブ。Fig. 1 is a vertical sectional view of the burner device according to the present invention, Fig.
The figure is a main view taken along line 1-A of FIG. 1, and FIG. 3 is a front view a and a side view of the burner tip. 1...Gas ring, 2...Independent gas burner, 3...Gas burner tip, 4...
・Burner outer box, 5... Burner throat, 6...
...Wind box, 7...Auxiliary burner, 8...
...Partition wall, 9a, 9b, 9c, 9d...Air chamber, 10...Pipe, 11...Connection fitting, 1
2...Gas injection hole, 14...Pointer, 1
6...Secondary air adjustment sleeve, 17...
・Air adjustment sleeve.
Claims (1)
空気室には矩形バーナチップを先端に有しかつバーナ軸
は回転できる独立バーナを設け、各空気室に送入する空
気量は独立した夕”ンパにより制御することを特徴とす
るＮＯｘ低減バーナ。1 The burner outer box is divided into multiple air chambers by partition walls, and each air chamber is equipped with an independent burner with a rectangular burner tip at the tip and a rotatable burner shaft, and the amount of air fed into each air chamber is independent. A NOx reduction burner characterized in that it is controlled by a damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12177775A JPS5838684B2 (en) | 1975-10-11 | 1975-10-11 | NOX reduction burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12177775A JPS5838684B2 (en) | 1975-10-11 | 1975-10-11 | NOX reduction burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5246528A JPS5246528A (en) | 1977-04-13 |
| JPS5838684B2 true JPS5838684B2 (en) | 1983-08-24 |
Family
ID=14819617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12177775A Expired JPS5838684B2 (en) | 1975-10-11 | 1975-10-11 | NOX reduction burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5838684B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55165406A (en) * | 1979-06-07 | 1980-12-23 | Babcock Hitachi Kk | Burner for pulverized coal |
| JPS5784910A (en) * | 1980-11-17 | 1982-05-27 | Shigemori Otani | Burner for combustor |
| JP2002068324A (en) | 2000-08-30 | 2002-03-08 | Nippon Sanso Corp | Heat-insulating container |
-
1975
- 1975-10-11 JP JP12177775A patent/JPS5838684B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5246528A (en) | 1977-04-13 |
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