JPH0727306A - Burner with low nitrogen oxide generation - Google Patents
Burner with low nitrogen oxide generationInfo
- Publication number
- JPH0727306A JPH0727306A JP5174573A JP17457393A JPH0727306A JP H0727306 A JPH0727306 A JP H0727306A JP 5174573 A JP5174573 A JP 5174573A JP 17457393 A JP17457393 A JP 17457393A JP H0727306 A JPH0727306 A JP H0727306A
- Authority
- JP
- Japan
- Prior art keywords
- burner
- dividing plate
- air
- prevention ring
- draft tube
- 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
Landscapes
- Gas Burners (AREA)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
Abstract
(57)【要約】
【目的】 窒素酸化物の発生を低レベルに抑制するバ−
ナに関するものである。
【構成】 ドラフトチューブ内側に漏洩防止リングを固
定し、この漏洩防止リングに、バ−ナヘッド先端部に設
けた空気分割板を結合させたことを特徴とするものであ
る。漏洩を完全に防止することができるので、盲部下流
側での排ガス再循環流を効果的に持続することができ、
即ち効果的な排ガス再循環分割燃焼が実行でき、ＮＯx
の低減化を促進することができる。
(57) [Abstract] [Purpose] A bar that suppresses the generation of nitrogen oxides to a low level.
It is about Na. [Structure] A leak prevention ring is fixed to the inside of the draft tube, and an air dividing plate provided at the tip of the burner head is coupled to the leak prevention ring. Since leakage can be completely prevented, the exhaust gas recirculation flow on the downstream side of the blind part can be effectively maintained,
That is, effective exhaust gas recirculation split combustion can be executed, and NO x
Can be promoted.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、窒素酸化物低発生バー
ナに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nitrogen oxide low generation burner.
【０００２】[0002]
【従来技術】ボイラ用バーナは、通常、ドラフトチュー
ブ内にバ−ナヘッドが装入され形で構成されている（図
５及び図６）。かかるバーナは自己排ガス再循環方式や
分割火炎を利用して窒素酸化物（ＮＯx）の低減化を図
かることが行なわれている。2. Description of the Related Art A burner for a boiler is usually constructed by inserting a burner head into a draft tube (FIGS. 5 and 6). Such burners are designed to reduce nitrogen oxides (NO x ) by utilizing a self-exhaust gas recirculation system and divided flames.
【０００３】[0003]
【発明が解決しようとする課題】図５及び図６で示す従
来例の場合、製作、組立の都合上、空気分割板の外径を
ドラフトチューブ内径にピタリと合わせるのは困難であ
り、隙間が大きいと、盲部の排ガス再循環効果を阻害し
たりして、分割効果が薄くなって低ＮＯx性が損われる
という課題がある。In the case of the conventional example shown in FIG. 5 and FIG. 6, it is difficult to match the outer diameter of the air dividing plate to the inner diameter of the draft tube because of the manufacturing and assembling, and the gap is not formed. If it is large, there is a problem that the exhaust gas recirculation effect in the blind part is obstructed, the dividing effect becomes thin and the low NO x property is impaired.
【０００４】[0004]
【課題を解決すべき手段】前記課題を解決するために、
本発明は、ドラフトチューブ内側に漏洩防止リングを固
定し、この漏洩防止リングに、バ−ナヘッド先端部に設
けた空気分割板を設置したことを特徴とするものであ
る。[Means for Solving the Problems] In order to solve the above problems,
The present invention is characterized in that a leakage prevention ring is fixed inside the draft tube, and an air dividing plate provided at the tip of the burner head is installed on the leakage prevention ring.
【０００５】また、本発明は、空気流通部と盲部を交互
に構成して、中央部にガス管通過孔を設けた空気分割板
を、ドラフトチューブ内に固定し、バ−ナヘッドの外周
に設けた漏洩防止板を前記空気分割板に結合させたこと
を特徴とするものである。Further, according to the present invention, an air dividing plate having an air circulating portion and a blind portion alternately arranged and having a gas pipe passage hole in the central portion is fixed in the draft tube and is provided on the outer periphery of the burner head. The leakage prevention plate provided is connected to the air dividing plate.
【０００６】[0006]
【作用】漏洩を完全に防止することができるので、盲部
下流側での排ガス再循環流を効果的に持続することがで
き、即ち効果的な排ガス再循環分割燃焼が実行でき、Ｎ
Ｏxの低減化を促進することができる。Since the leakage can be completely prevented, the exhaust gas recirculation flow on the downstream side of the blind part can be effectively maintained, that is, effective exhaust gas recirculation split combustion can be executed, and N
The reduction of O x can be promoted.
【０００７】[0007]
【実施例】図１に於いて、符号１はドラフトチューブで
あって、このドラフトチューブ１内の一側に漏洩防止リ
ング２を固定する。固定方法は溶接或はストッパーによ
る固定等でよい。かかる漏洩防止リング２に、バ−ナヘ
ッド３の先端に設けた空気分割板４ａを押しつけるよう
に設置する。図２の場合には、空気分割板４ｂをドラフ
トチューブ１内の一側に固定し、バ−ナヘッド５の外周
には漏洩防止板６を装置し、前記空気分割板４ｂと漏洩
防止板６とを結合させた構成である。符号７は盲部であ
り、８は空気流通部であり、５はガス管通過部である。DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 1 is a draft tube, and a leak prevention ring 2 is fixed to one side of the draft tube 1. The fixing method may be welding or fixing with a stopper. The air division plate 4a provided at the tip of the burner head 3 is installed so as to be pressed against the leakage prevention ring 2. In the case of FIG. 2, an air dividing plate 4b is fixed to one side in the draft tube 1, and a leakage prevention plate 6 is provided on the outer periphery of the burner head 5, and the air dividing plate 4b and the leakage prevention plate 6 are provided. This is a configuration in which Reference numeral 7 is a blind portion, 8 is an air circulation portion, and 5 is a gas pipe passage portion.
【０００８】しかして、漏洩防止リング２と空気分割板
４ａ、又は空気分割板４ｂと漏洩防止板６によって、空
気又は混合気の漏洩を完全に防止することができ、盲部
８下流側での排ガス再循環を効果的に持続することがで
きる。このことは、効果的な排ガス再循環分割燃焼が実
行でき、ＮＯxの低減化を促進することができるもので
ある。図３は、本発明の排ガス再循環燃焼が効果的に実
行されて、ＮＯxの低減した実例を示している。Therefore, the leakage prevention ring 2 and the air dividing plate 4a, or the air dividing plate 4b and the leakage preventing plate 6 can completely prevent the leakage of air or air-fuel mixture, and the downstream side of the blind portion 8 can be prevented. Exhaust gas recirculation can be effectively maintained. This means that the exhaust gas recirculation split combustion can be executed effectively and the reduction of NO x can be promoted. FIG. 3 shows an example in which the exhaust gas recirculation combustion of the present invention is effectively performed to reduce NO x .
【０００９】[0009]
【発明の効果】本発明は以上の通りであるので、確実な
排ガス再循環分割燃焼が達成でき、ＮＯxの発生量を効
果的に抑制することができるものである。As described above, the present invention is capable of achieving reliable exhaust gas recirculation division combustion and effectively suppressing the amount of NO x produced.
【図１】本発明の断面的説明図である。FIG. 1 is a cross-sectional explanatory view of the present invention.
【図２】他の実施の断面的説明図である。FIG. 2 is a cross sectional explanatory view of another embodiment.
【図３】本発明によるＮＯx排出特性と従来バーナによ
る排出特性の比較図である。FIG. 3 is a comparison diagram of an NO x emission characteristic according to the present invention and an emission characteristic of a conventional burner.
【図４】従来バーナの断面的説明図である。FIG. 4 is a cross-sectional explanatory view of a conventional burner.
【図５】従来バーナの断面的説明図である。FIG. 5 is a cross-sectional explanatory view of a conventional burner.
１ ドラフトチューブ ２ 漏洩防止リング ３ バ−ナヘッド ４ａ 空気分割板 ４ｂ 空気分割板 ５ ガス管通過部 ６ 漏洩防止板 ７ 盲部 ８ 空気流通部 ９ 空気流入孔 1 Draft Tube 2 Leakage Prevention Ring 3 Burner Head 4a Air Division Plate 4b Air Division Plate 5 Gas Pipe Passing Port 6 Leakage Prevention Plate 7 Blind Portion 8 Air Circulation Portion 9 Air Inlet Hole
Claims (2)
を固定し、この漏洩防止リングに、バ−ナヘッド先端部
に設けた空気分割板を結合させたことを特徴とする窒素
酸化物低発生バーナ。1. A low nitrogen oxide generation burner characterized in that a leakage prevention ring is fixed to the inside of a draft tube, and an air dividing plate provided at the tip of a burner head is connected to the leakage prevention ring.
央部にガス管通過孔を設けた空気分割板を、ドラフトチ
ューブ内に固定し、バ−ナヘッドの外周に設けた漏洩防
止板を前記空気分割板に結合させたことを特徴とする窒
素酸化物低発生バーナ。2. A leak preventer provided on the outer periphery of a burner head by fixing an air dividing plate having an air circulating portion and a blind portion alternately and having a gas pipe passage hole at a central portion in a draft tube. A low nitrogen oxide generation burner, characterized in that a plate is bonded to the air dividing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5174573A JPH0727306A (en) | 1993-07-14 | 1993-07-14 | Burner with low nitrogen oxide generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5174573A JPH0727306A (en) | 1993-07-14 | 1993-07-14 | Burner with low nitrogen oxide generation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0727306A true JPH0727306A (en) | 1995-01-27 |
Family
ID=15980927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5174573A Pending JPH0727306A (en) | 1993-07-14 | 1993-07-14 | Burner with low nitrogen oxide generation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0727306A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100480004B1 (en) * | 1999-12-28 | 2005-03-30 | 주식회사 포스코 | REGENERATIVE COMBUSTION APPARATUS WITH RADIANT TUBE AND METHOD FOR LOWERING NOx BY USING THIS APPARATUS |
| JP2012202561A (en) * | 2011-03-23 | 2012-10-22 | Tokyo Gas Co Ltd | Burner |
| JP2012202632A (en) * | 2011-03-25 | 2012-10-22 | Tokyo Gas Co Ltd | Burner |
| JP2017146029A (en) * | 2016-02-17 | 2017-08-24 | 東邦瓦斯株式会社 | Gas burner |
| JP2023135673A (en) * | 2022-03-16 | 2023-09-29 | 株式会社ヒラカワ | gas burner |
-
1993
- 1993-07-14 JP JP5174573A patent/JPH0727306A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100480004B1 (en) * | 1999-12-28 | 2005-03-30 | 주식회사 포스코 | REGENERATIVE COMBUSTION APPARATUS WITH RADIANT TUBE AND METHOD FOR LOWERING NOx BY USING THIS APPARATUS |
| JP2012202561A (en) * | 2011-03-23 | 2012-10-22 | Tokyo Gas Co Ltd | Burner |
| JP2012202632A (en) * | 2011-03-25 | 2012-10-22 | Tokyo Gas Co Ltd | Burner |
| JP2017146029A (en) * | 2016-02-17 | 2017-08-24 | 東邦瓦斯株式会社 | Gas burner |
| JP2023135673A (en) * | 2022-03-16 | 2023-09-29 | 株式会社ヒラカワ | gas burner |
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