JP2759399B2 - Thermal storage radiant tube burner - Google Patents
Thermal storage radiant tube burnerInfo
- Publication number
- JP2759399B2 JP2759399B2 JP4236136A JP23613692A JP2759399B2 JP 2759399 B2 JP2759399 B2 JP 2759399B2 JP 4236136 A JP4236136 A JP 4236136A JP 23613692 A JP23613692 A JP 23613692A JP 2759399 B2 JP2759399 B2 JP 2759399B2
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- furnace body
- radiant tube
- heat storage
- furnace
- 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 - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Gas Burners (AREA)
- Air Supply (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は蓄熱式ラジアントチ
ューブ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 regenerative radiant tube burner.
【０００２】[0002]
【従来の技術】従来、図４に示すように、Ｕ字型のラジ
アントチューブを使用した加熱炉があるが、かかる加熱
炉は、蓄熱部及び燃焼機構が炉体外に突出するため、炉
体全体のサイズが大きくなる課題があり、しかも、放熱
部が曲管部を呈しているため、セラミックス製とするこ
とができず、使用温度が１０００℃以下の炉に限られ、
且つ窒素酸化物の排出量が多い課題があった。2. Description of the Related Art Conventionally, as shown in FIG. 4, there is a heating furnace using a U-shaped radiant tube. However, such a heating furnace has a heat storage section and a combustion mechanism protruding outside the furnace body. There is a problem that the size of the radiator becomes large, and furthermore, since the heat radiating portion has a curved tube portion, it cannot be made of ceramics, and is limited to a furnace whose operating temperature is 1000 ° C. or less,
In addition, there is a problem that a large amount of nitrogen oxide is emitted.
【０００３】[0003]
【発明が解決しようとする課題】炉温が１４００℃の条
件下でも使用することができ、且つ窒素酸化物の排出量
が少なく、しかも炉体外に突出する部分がないコンパク
ト化されたラジアントチューブバーナ出現が強く望まれ
ている。SUMMARY OF THE INVENTION A compact radiant tube burner which can be used even at a furnace temperature of 1400.degree. C., has a low nitrogen oxide discharge, and has no portion protruding outside the furnace body. The emergence is strongly desired.
【０００４】[0004]
【課題を解決するための手段】前記課題を解決するため
に、本発明では、炉体にセラミックス製ストレート管を
貫通させ、該ストレート管の炉体壁内に位置する部分
に、蓄熱層と、該蓄熱層中に偏心させて火炎形成ノズル
部を設けると共に火炎形成ノズル部内に燃料ガス管を設
置して濃淡二段燃焼機構を構成し、該濃淡二段燃焼機構
を、前記ストレート管の両側の炉体壁内に位置させて交
互燃焼させることを特徴とする蓄熱式ラジアントチュー
ブバーナを提案するものである。In order to solve the above problems, according to the present invention, a ceramic straight tube is passed through a furnace body, and a heat storage layer is provided at a portion of the straight tube located inside the furnace body wall. A flame forming nozzle portion is provided eccentrically in the heat storage layer, and a fuel gas pipe is installed in the flame forming nozzle portion to constitute a two-stage rich-shape combustion mechanism. The present invention proposes a regenerative radiant tube burner characterized by being located in a furnace body wall and alternately burning.
【０００５】[0005]
【作用】火炎形成ノズル内には燃料ガス管を設けている
ので、このノズルにおいて低空気比濃燃焼が行われると
共に、このノズルはストレート管に偏心して設けられて
いて燃焼用空気を偏流させるので、この燃焼用空気によ
って淡燃焼と二段燃焼が行われ、このような濃淡二段燃
焼により窒素酸化物の発生を低減できる。濃淡二段燃焼
を行うための濃淡二段燃焼機構はストレート管の両端に
於いて、炉体壁内にその全部が収納されてしまう。また
ストレート管であるので、セラミックスで構成でき１０
００℃以上の炉内に適用できる。Since the fuel gas pipe is provided in the flame forming nozzle, low-air-concentration combustion is performed in this nozzle, and this nozzle is provided eccentrically in the straight pipe to deviate the combustion air. The combustion air performs light combustion and two-stage combustion, and the generation of nitrogen oxides can be reduced by such two-stage combustion. The two-stage combustion mechanism for performing the two-stage combustion is completely housed in the furnace wall at both ends of the straight pipe. Since it is a straight tube, it can be made of ceramics.
Applicable in furnaces of 00 ° C or higher.
【０００６】[0006]
【実施例】次に本発明の実施例を添付図面につき説明す
る。符号１は炉体であって、この炉体１を貫通してセラ
ミックス製ストレート管２を設置する。該ストレート管
２の炉体壁３内に位置する部分に、アルミボール等の蓄
熱層４を設けると共に、該蓄熱層４中に火炎形成ノズル
５を設ける。火炎形成ノズル５は蓄熱槽４中に偏心させ
て設けており、また火炎形成ノズル５内に燃料ガス管７
を設けることにより濃淡二段燃焼機構６を構成してい
る。そして該濃淡二段燃焼機構６を、前記ストレート管
２の両側の炉体壁３内に設けて交番燃焼させる構成とし
ている。なお、燃焼開始時は、例えば、片側の燃焼機構
で燃焼昇温させ、反対側の燃焼機構内に組み込んだ紫外
線光電管等の着火検出機構で火炎の検出を行う。こうし
て温度が所定の温度に達した後、交番燃焼を開始する。
着火温度以上での操業中は、火炎の検出は行なわない。BRIEF DESCRIPTION OF THE DRAWINGS FIG. Reference numeral 1 denotes a furnace body, through which a ceramic straight pipe 2 is installed. A heat storage layer 4 made of aluminum balls or the like is provided in a portion of the straight pipe 2 located in the furnace body wall 3, and a flame forming nozzle 5 is provided in the heat storage layer 4. The flame forming nozzle 5 is provided eccentrically in the heat storage tank 4, and a fuel gas pipe 7 is provided in the flame forming nozzle 5.
Are provided to constitute the concentration two-stage combustion mechanism 6. The two-stage thick and light combustion mechanism 6 is provided in the furnace body wall 3 on both sides of the straight pipe 2 to perform alternating combustion. At the start of combustion, for example, the combustion temperature is raised by the combustion mechanism on one side, and the flame is detected by an ignition detection mechanism such as an ultraviolet photoelectric tube incorporated in the combustion mechanism on the opposite side. After the temperature reaches the predetermined temperature, alternating combustion is started.
No flame detection is performed during operation above the ignition temperature.
【０００７】上述したとおり火炎形成ノズル５内には、
燃料ガス管７を設けているため、この火炎形成ノズル５
に於いて低空気比燃焼させて、燃料リッチ火炎を形成す
ることができる。また、同時に前記火炎形成ノズル５
は、図示の通り、偏心させて設けており、偏流領域９が
形成されて、燃焼用空気を偏流させるので、蓄熱槽４を
経て火炎形成ノズル５の外側において、ポーラスプレー
ト１０を介して流出する燃焼用空気により淡燃焼が実行
できると共に、空気孔８から流出する燃焼用空気によっ
て二段燃焼が進行する。以上の燃焼、つまり、濃淡二段
燃焼の実行により、窒素酸化物の生成が抑制される。か
かる燃焼ガスは、ストレート管２内を流れて炉内被加熱
物の加熱に供されてストレート管２の反対側に至り、反
対側の濃淡二段燃焼機構６の蓄熱層４を経て、この蓄熱
層４を予熱した後、空気導入部１１（燃焼ガス導出部）
から排出される。かかる燃焼を交互に行って炉内被熱物
を加熱する。本発明では、以上の濃淡二段燃焼を行う燃
焼機構６は、炉体壁３内に全く収納されてしまうので、
炉全体が大型化することなく、極めてコンパクト化す
る。またストレート管２は曲管部がないので、全セラミ
ックス製とすることができ、その結果、１０００℃以上
の炉内温度でも使用することができる。As described above, the inside of the flame forming nozzle 5 includes:
Since the fuel gas pipe 7 is provided, the flame forming nozzle 5
At low air ratio to form a fuel rich flame. At the same time, the flame forming nozzle 5
Is provided eccentrically, as shown in the figure, and a divergent region 9 is formed to deviate the combustion air, so that the effluent flows out of the flame forming nozzle 5 through the heat storage tank 4 through the porous plate 10. Light combustion can be performed by the combustion air, and two-stage combustion proceeds by the combustion air flowing out of the air holes 8. By performing the above-described combustion, that is, performing the two-stage concentration combustion, the generation of nitrogen oxides is suppressed. The combustion gas flows through the straight pipe 2 and is used for heating the object to be heated in the furnace, reaches the opposite side of the straight pipe 2, and passes through the heat storage layer 4 of the two-stage dense / diffuse combustion mechanism 6 on the opposite side. After preheating the layer 4, the air inlet 11 (combustion gas outlet)
Is discharged from Such combustion is performed alternately to heat the object to be heated in the furnace. In the present invention, the combustion mechanism 6 for performing the above-described two-stage combustion is completely housed in the furnace body wall 3.
The entire furnace is extremely compact without being enlarged. Further, since the straight pipe 2 has no curved pipe portion, it can be made of all ceramics, and as a result, it can be used even at a furnace temperature of 1000 ° C. or more.
【０００８】[0008]
【発明の効果】本発明は以上の通りであるので、窒素酸
化物の発生の抑制、炉体のコンパクト化及び１０００℃
以上の炉内温度での使用が実行できる外、蓄熱層及び濃
淡二段燃焼機構部分は、１０００℃以下の低温域でも前
記したと同様に有効に適用することができる等の諸効果
を奏するものである。As described above, the present invention suppresses the generation of nitrogen oxides, reduces the size of the furnace body, and reduces the temperature to 1000 ° C.
In addition to being able to be used at the above-mentioned furnace temperature, the heat storage layer and the two-stage combustion mechanism have various effects such as being able to be applied effectively even in a low-temperature region of 1000 ° C. or less in the same manner as described above. It is.
【図１】本発明の全体を示す縦断的説明図である。FIG. 1 is a vertical explanatory view showing the whole of the present invention.
【図２】要部拡大説明図である。FIG. 2 is an enlarged explanatory view of a main part.
【図３】要部側面説明図である。FIG. 3 is an explanatory side view of a main part.
【図４】従来炉の説明図である。FIG. 4 is an explanatory view of a conventional furnace.
１ 炉体 ２ ストレート管 ３ 炉体壁 ４ 蓄熱層 ５ 火炎形成ノズル ６ 燃焼機構 ７ 燃料ガス管 ８ 空気孔 ９ 偏流領域 １０ ポーラスプレート １１ 空気導入部 DESCRIPTION OF SYMBOLS 1 Furnace body 2 Straight pipe 3 Furnace body wall 4 Thermal storage layer 5 Flame formation nozzle 6 Combustion mechanism 7 Fuel gas pipe 8 Air hole 9 Drift region 10 Porous plate 11 Air introduction part
フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F23D 14/00 - 14/18 F23D 14/26 - 14/84 F23C 11/00 F23L 15/02Continuation of the front page (58) Field surveyed (Int.Cl. 6 , DB name) F23D 14/00-14/18 F23D 14/26-14/84 F23C 11/00 F23L 15/02
Claims (1)
通させ、該ストレート管の炉体壁内に位置する部分に、
蓄熱層と、該蓄熱層中に偏心させて火炎形成ノズル部を
設けると共に火炎形成ノズル部内に燃料ガス管を設置し
て濃淡二段燃焼機構を構成し、該濃淡二段燃焼機構を、
前記ストレート管の両側の炉体壁内に位置させて交互燃
焼させることを特徴とする蓄熱式ラジアントチューブバ
ーナ 1. A ceramic straight tube is passed through a furnace body.
Through the portion of the straight tube located in the furnace body wall,
The heat storage layer and the flame forming nozzle portion eccentrically in the heat storage layer
And a fuel gas pipe inside the flame forming nozzle.
To constitute a two-stage combustion mechanism, the two-stage combustion mechanism,
Alternating fuel is located in the furnace body wall on both sides of the straight pipe
Thermal storage radiant tube bar characterized by firing
Na
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4236136A JP2759399B2 (en) | 1992-09-03 | 1992-09-03 | Thermal storage radiant tube burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4236136A JP2759399B2 (en) | 1992-09-03 | 1992-09-03 | Thermal storage radiant tube burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06147433A JPH06147433A (en) | 1994-05-27 |
| JP2759399B2 true JP2759399B2 (en) | 1998-05-28 |
Family
ID=16996296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4236136A Expired - Fee Related JP2759399B2 (en) | 1992-09-03 | 1992-09-03 | Thermal storage radiant tube burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2759399B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5795552B2 (en) * | 2012-05-22 | 2015-10-14 | 中外炉工業株式会社 | Heat storage unit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0635885B2 (en) * | 1989-03-27 | 1994-05-11 | 日本ファーネス工業株式会社 | Heat storage type radiant tube burner |
| JPH0619941Y2 (en) * | 1990-06-29 | 1994-05-25 | 日本ファーネス工業株式会社 | Heat storage type radiant tube burner device |
-
1992
- 1992-09-03 JP JP4236136A patent/JP2759399B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06147433A (en) | 1994-05-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |