JP2003279002A - Regenerative radiant tube combustion device - Google Patents
Regenerative radiant tube combustion deviceInfo
- Publication number
- JP2003279002A JP2003279002A JP2002086658A JP2002086658A JP2003279002A JP 2003279002 A JP2003279002 A JP 2003279002A JP 2002086658 A JP2002086658 A JP 2002086658A JP 2002086658 A JP2002086658 A JP 2002086658A JP 2003279002 A JP2003279002 A JP 2003279002A
- Authority
- JP
- Japan
- Prior art keywords
- radiant tube
- combustion
- supply
- combustion cylinder
- gas
- 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.)
- Granted
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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ラジアントチュー
ブの両端部のそれぞれに、そのラジアントチューブ内に
ガス燃料を供給する燃料供給部と、その燃料供給部の外
周部を囲む環状に形成され且つ蓄熱体を通気可能な状態
で備えた給排路とを備えた本体部が設けられ、前記一対
の燃料供給部に交互にガス燃料が供給されるようにガス
燃料供給を切り換える燃料供給切換手段と、ガス燃料が
供給される方の前記燃料供給部に対応する前記給排気路
には燃焼用酸素含有ガスを供給し、且つ、ガス燃料の供
給が停止される方の前記燃料供給部に対応する前記給排
路からは前記ラジアントチューブ内の燃焼ガスを排気す
るように給排気状態を切り換える給排気切換手段とが設
けられた蓄熱式ラジアントチューブ燃焼装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiant tube having a fuel supply section for supplying a gas fuel into the radiant tube and an annular shape surrounding the outer peripheral section of the fuel supply section. A fuel supply switching means for switching the gas fuel supply so that a gas fuel is supplied alternately to the pair of fuel supply parts, and a main body part provided with a supply / discharge passage provided with the body in a breathable state; The oxygen-containing gas for combustion is supplied to the air supply / exhaust passage corresponding to the fuel supply section on which the gas fuel is supplied, and the fuel supply section corresponding to the fuel supply section on which the gas fuel supply is stopped. The present invention relates to a heat storage type radiant tube combustion apparatus provided with a supply / exhaust switching means for switching the supply / exhaust state so as to exhaust the combustion gas in the radiant tube from the supply / exhaust passage.
【０００２】[0002]
【従来の技術】かかる蓄熱式ラジアントチューブ燃焼装
置は、例えば、金属溶解、熱処理等の工業炉の熱源とし
て用いられるものであり、燃料供給切換手段により、一
対の燃料供給部に交互にガス燃料が供給されるようにガ
ス燃料供給を切り換え、並びに、給排気切換手段によ
り、ガス燃料が供給される方の燃料供給部に対応する給
排気路には燃焼用酸素含有ガスを供給し、且つ、ガス燃
料の供給が停止される方の燃料供給部に対応する給排路
からはラジアントチューブ内の燃焼ガスを排気するよう
に給排気状態を切り換えることにより、蓄熱体に燃焼ガ
スを通過させてその保有熱を蓄熱すると共に、そのよう
に蓄熱した蓄熱体に燃焼用酸素含有ガスを通過させて酸
素含有ガスを予熱しながら、一対の燃料供給部にて交互
にガス燃料を燃焼させるものである。2. Description of the Related Art Such a heat storage type radiant tube combustion apparatus is used as a heat source of an industrial furnace for metal melting, heat treatment, etc., and a fuel supply switching means alternately supplies gas fuel to a pair of fuel supply sections. The gas fuel supply is switched so as to be supplied, and the oxygen-containing gas for combustion is supplied to the supply / exhaust passage corresponding to the fuel supply part to which the gas fuel is supplied by the supply / exhaust switching means, and By switching the supply / exhaust state so that the combustion gas in the radiant tube is exhausted from the supply / exhaust passage corresponding to the fuel supply section where the fuel supply is stopped, the combustion gas is passed through the heat storage body and held. While storing heat, preheating the oxygen-containing gas by passing the oxygen-containing gas for combustion through the heat storage body thus stored, the gas fuel is alternately burned by the pair of fuel supply units. Is shall.
【０００３】従来は、燃料供給部にてラジアントチュー
ブ内に供給されるガス燃料に対して、給排路を通じてラ
ジアントチューブ内に供給される燃焼用酸素含有ガスの
全量をラジアントチューブ内において一箇所で一挙に混
合させて、ガス燃料を燃焼させるように構成していた
（例えば、特開２０００−３３７６１４号公報参照）。
又、ラジアントチューブ内を端部に向かって流動してく
る燃焼ガスをそのまま給排気路に流入させて、排出する
ように構成していた。Conventionally, with respect to the gas fuel supplied into the radiant tube at the fuel supply section, the entire amount of the oxygen-containing gas for combustion supplied into the radiant tube through the supply / exhaust passage is provided at one place in the radiant tube. It was configured to mix at once and burn gas fuel.
(See, for example, Japanese Patent Laid-Open No. 2000-337614).
Further, the combustion gas flowing toward the end portion in the radiant tube is made to flow into the air supply / exhaust passage as it is and discharged.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来で
は、ガス燃料と燃焼用酸素含有ガスとをラジアントチュ
ーブ内において一箇所で一挙に混合させて燃焼させるこ
とから、炎のピーク温度が高くなって、ＮＯｘの発生量
が多くなるという問題があった。又、ラジアントチュー
ブ内をその端部に向かって流動してくる燃焼ガスはその
まま成り行き状態で給排気路に流入することから、ラジ
アントチューブ内を流動する燃焼ガスの流動状態におい
て例えばラジアントチューブの径方向に偏りが生じたり
すると、燃焼ガスは流動状態がラジアントチューブの径
方向に偏ったままで蓄熱体を通過し易いので、蓄熱体全
体にわたって均等に蓄熱され難くなって、次に蓄熱体を
通過する燃焼用酸素含有ガスに対する放熱が効率良く行
われ難いものとなり、排熱回収効率を向上する、延いて
は熱効率を向上する上で、改善の余地があった。However, in the prior art, since the gas fuel and the oxygen-containing gas for combustion are mixed and burned at one place in the radiant tube at the same time, the peak temperature of the flame becomes high, There is a problem that the amount of NOx generated increases. Further, since the combustion gas flowing in the radiant tube toward the end thereof flows into the air supply / exhaust passage as it is, the combustion gas flowing in the radiant tube flows in the radial direction of the radiant tube, for example. If there is a deviation in the flow of the combustion gas, the flow state of the combustion gas tends to pass through the heat storage body while being biased in the radial direction of the radiant tube. It becomes difficult to efficiently radiate heat to the oxygen-containing gas for use, and there is room for improvement in improving the exhaust heat recovery efficiency and, in turn, improving the thermal efficiency.
【０００５】本発明は、かかる実情に鑑みてなされたも
のであり、その目的は、蓄熱式ラジアントチューブ燃焼
装置において、低ＮＯｘ化及び高熱効率化を図ることに
ある。The present invention has been made in view of the above circumstances, and an object thereof is to achieve low NOx and high thermal efficiency in a heat storage type radiant tube combustion device.
【０００６】[0006]
【課題を解決するための手段】〔請求項１記載の発明〕
請求項１に記載の特徴構成は、前記ラジアントチューブ
の両端部のそれぞれに、外径が前記ラジアントチューブ
の内径よりも小径の燃焼筒が、前記燃料供給部よりも先
方に位置して前記ラジアントチューブ内に挿入される状
態で設けられ、その燃焼筒における基端部が、その基端
側ほど漸次径が太くなり、且つ、その基端側の開口端縁
が前記燃料供給部からのガス燃料噴出方向視で前記燃料
供給部を内在させて前記給排気路における内周縁と外周
縁との間に位置する状態の漏斗状部となるように構成さ
れて、前記燃料供給部からガス燃料が前記燃焼筒内に供
給されると共に、前記燃焼筒の内部及び外部が前記給排
路に連通されるように構成されていることにある。請求
項１に記載の特徴構成によれば、ガス燃料が供給される
方の本体部においては、燃料供給部からガス燃料が燃焼
筒内に供給され、給排路から流出した燃焼用酸素含有ガ
スは、燃焼筒の内部及び外部を流動するので、燃料供給
部から燃焼筒内に供給されたガス燃料の一部は、燃焼筒
内にて燃焼用酸素含有ガスと混合されて燃焼し、残部
は、燃焼筒から流出した後、燃焼筒の外部を流動してき
た燃焼用酸素含有ガスと混合されて燃焼する。一方、ガ
ス燃料の供給が停止されている方の本体部においては、
ラジアントチューブ内をその端部に向かって流動してく
る燃焼ガスは、燃焼筒の内部及び外部を流動して、給排
気路に流入し、蓄熱体を通過して保有熱を蓄熱体に放熱
した後、排出される。つまり、燃料供給部から燃焼筒内
に供給されてその燃焼筒内を通過して流動するガス燃料
に対して、燃焼用酸素含有ガスを、先ず、燃焼筒内で供
給し、次いで、燃焼筒から流出した後に供給する形態
で、段階的に供給して、ガス燃料を複数段燃焼させるこ
とにより、炎のピーク温度を低下させることができるの
で、ＮＯｘの発生量を低減することができる。ちなみ
に、そのように燃焼筒を設けて複数段燃焼させるように
しながらも、燃焼筒における基端部が漏斗状部となって
いるので、その漏斗状部の内部空間を燃焼室として機能
させて、ガス燃料と燃焼用酸素含有ガスとを良好に混合
させて、安定燃焼させることが可能となり、そのように
安定燃焼する炎の保炎作用により、燃焼筒から流出した
ガス燃料も安定燃焼させることが可能となり、全体とし
て安定燃焼性を維持することができる。又、ラジアント
チューブ内をその端部に向かって流動してくる燃焼ガス
を、強制的に燃焼筒の内外に分けて流動させることによ
り、燃焼ガスを、ラジアントチューブの径方向に対して
万遍なく広げて蓄熱体を通過させ易いので、蓄熱体全体
にわたって均等に蓄熱され易くなって、次に蓄熱体を通
過する燃焼用酸素含有ガスに対する放熱が効率良く行わ
れるものとなり、排熱回収効率を向上することができ、
延いては熱効率を向上することができる。従って、蓄熱
式ラジアントチューブ燃焼装置において、低ＮＯｘ化及
び高熱効率化を図ることができるようになった。Means for Solving the Problems [Invention of Claim 1]
In the characteristic configuration according to claim 1, a combustion cylinder having an outer diameter smaller than an inner diameter of the radiant tube is provided at each of both end portions of the radiant tube, and the radiant tube is positioned ahead of the fuel supply portion. It is provided in a state of being inserted into the inside of the combustion cylinder, and the base end portion of the combustion cylinder has a diameter gradually increasing toward the base end side, and the opening end edge of the base end side ejects gas fuel from the fuel supply portion. When viewed from the direction, the fuel supply section is internally provided to form a funnel-shaped section located between an inner peripheral edge and an outer peripheral edge of the air supply / exhaust passage, and the gas fuel is burned from the fuel supply section. The fuel is supplied into the cylinder, and the inside and the outside of the combustion cylinder are connected to the supply / discharge passage. According to the characterizing feature of claim 1, in the main body part to which the gas fuel is supplied, the gas fuel is supplied from the fuel supply part into the combustion cylinder, and the oxygen-containing gas for combustion flows out from the supply / discharge passage. Is flowing inside and outside the combustion cylinder, so that a part of the gas fuel supplied from the fuel supply unit into the combustion cylinder is mixed with the oxygen-containing gas for combustion in the combustion cylinder and burned, and the rest is After flowing out of the combustion cylinder, the oxygen-containing gas for combustion that has flowed outside the combustion cylinder is mixed and burned. On the other hand, in the body part where the supply of gas fuel is stopped,
The combustion gas flowing toward the end of the radiant tube flows inside and outside the combustion cylinder, flows into the supply / exhaust passage, passes through the heat storage body, and radiates the retained heat to the heat storage body. After that, it is discharged. That is, the oxygen-containing gas for combustion is first supplied in the combustion cylinder to the gas fuel that is supplied from the fuel supply unit into the combustion cylinder and flows through the combustion cylinder, and then from the combustion cylinder. Since the peak temperature of the flame can be lowered by gradually supplying the gas fuel in the form of being supplied after flowing out and burning the gas fuel in multiple stages, the amount of NOx generated can be reduced. By the way, even though the combustion cylinder is provided in such a manner to perform multiple stages of combustion, the base end portion of the combustion cylinder is a funnel-shaped portion, so that the internal space of the funnel-shaped portion functions as a combustion chamber, The gas fuel and the oxygen-containing gas for combustion can be mixed well, and stable combustion can be achieved, and the flame-holding action of the flame that burns stably in this way also enables stable combustion of the gas fuel that has flowed out from the combustion tube. It becomes possible and stable combustion property can be maintained as a whole. Also, by forcibly dividing the combustion gas flowing inside the radiant tube toward its end into the inside and outside of the combustion tube, the combustion gas is evenly distributed in the radial direction of the radiant tube. Since it is easy to spread and pass through the heat storage body, heat is easily stored evenly throughout the heat storage body, and heat is efficiently dissipated to the oxygen-containing gas for combustion that next passes through the heat storage body, improving exhaust heat recovery efficiency. You can
As a result, the thermal efficiency can be improved. Therefore, in the heat storage type radiant tube combustion device, it has become possible to achieve low NOx and high thermal efficiency.
【０００７】〔請求項２記載の発明〕請求項２に記載の
特徴構成は、前記燃焼筒を前記本体部に支持する支持体
が、前記漏斗状部の外周面に接触する漏斗状の内周面を
備えた環状に形成されて、その漏斗状の内周面に前記漏
斗状部の外周面が当て付けられる状態で前記燃焼筒を支
持するように構成され、前記支持体に、前記給排気路と
前記ラジアントチューブ内における前記支持体よりも先
端側とを連通させる連通路が設けられていることにあ
る。請求項２に記載の特徴構成によれば、燃焼筒は、漏
斗状部の外周面が支持体の漏斗状の内周面に当て付けら
れる状態で、支持体により本体部に支持される。そし
て、ガス燃料が供給される方の本体部においては、燃焼
用酸素含有ガスは、燃焼筒の内部及び燃焼筒の外部に位
置する連通路を流動して、ガス燃料に対して、複数段で
供給され、一方、ガス燃料の供給が停止されている方の
本体部においては、ラジアントチューブ内をその端部に
向かって流動してくる燃焼ガスは、燃焼筒の内部及び燃
焼筒の外部に位置する連通路を流動して、給排気路に流
入する。つまり、支持体の漏斗状の内周面に燃焼筒の漏
斗状部の外周面を当て付けた状態で、支持体により燃焼
筒を本体部に支持するので、燃焼筒の偏芯を抑制するこ
とが可能となり、形成される炎がラジアントチューブに
接触したり、近づき過ぎたりするのを抑制して、ラジア
ントチューブの耐久性を向上することが可能となる。従
って、蓄熱式ラジアントチューブ燃焼装置において、耐
久性を向上しながら、低ＮＯｘ化及び高熱効率化を図る
ことができるようになった。[Invention of Claim 2] In the characterizing construction of Claim 2, a support body for supporting the combustion cylinder on the main body portion is in contact with an outer peripheral surface of the funnel-shaped portion. It is formed in an annular shape having a surface, and is configured to support the combustion cylinder in a state where the outer peripheral surface of the funnel-shaped portion is abutted against the funnel-shaped inner peripheral surface, and the support body is provided with the supply / exhaust gas. There is provided a communication passage for communicating the passage with the tip side of the support in the radiant tube. According to the characteristic configuration of claim 2, the combustion cylinder is supported by the main body by the support in a state where the outer peripheral surface of the funnel-shaped portion is abutted against the funnel-shaped inner peripheral surface of the support. Then, in the main body portion to which the gas fuel is supplied, the oxygen-containing gas for combustion flows through the communication passages located inside the combustion cylinder and outside the combustion cylinder, and in multiple stages with respect to the gas fuel. On the other hand, in the main body part where the supply of gas fuel is stopped, the combustion gas flowing toward the end part inside the radiant tube is located inside the combustion cylinder and outside the combustion cylinder. Flow through the communicating passage and flow into the air supply / exhaust passage. That is, since the combustion cylinder is supported on the main body by the support while the outer peripheral surface of the funnel-shaped portion of the combustion cylinder is in contact with the funnel-shaped inner peripheral surface of the support body, eccentricity of the combustion cylinder is suppressed. It is possible to prevent the formed flame from coming into contact with or coming too close to the radiant tube, and it is possible to improve the durability of the radiant tube. Therefore, in the heat storage type radiant tube combustion device, it has become possible to achieve low NOx and high thermal efficiency while improving durability.
【０００８】〔請求項３記載の発明〕請求項３に記載の
特徴構成は、前記燃焼筒における前記漏斗状部よりも先
端側に対応する箇所に、前記燃焼筒の姿勢を保持する保
持体が、前記燃焼筒の外周面と前記ラジアントチューブ
の内周面とに当て付けられる状態で設けられていること
にある。請求項３に記載の特徴構成によれば、燃焼筒の
外周面とラジアントチューブの内周面とに当て付けられ
る状態で設けられた保持体により、燃焼筒の姿勢が保持
される。つまり、保持体により、燃焼筒の姿勢が保持さ
れるので、燃焼筒の偏芯を抑制することが可能となり、
形成される炎がラジアントチューブに接触したり、近づ
き過ぎたりするのを抑制して、ラジアントチューブの耐
久性を向上することが可能となる。ちなみに、請求項２
に記載の発明において、本請求項３に記載の特徴構成を
実施すると、支持体の漏斗状の内周面による燃焼筒の支
持作用、及び、保持体による燃焼筒の保持作用の協働に
より、燃焼筒の偏芯を一段と抑制することが可能となる
ので、ラジアントチューブの耐久性を一段と向上するこ
とが可能となるので好ましい。従って、蓄熱式ラジアン
トチューブ燃焼装置において、耐久性を向上しながら、
低ＮＯｘ化及び高熱効率化を図ることができるようにな
った。[Invention of Claim 3] According to the characterizing structure of Claim 3, a holder for holding the posture of the combustion cylinder is provided at a position corresponding to the tip side of the funnel-shaped portion in the combustion cylinder. The outer peripheral surface of the combustion tube and the inner peripheral surface of the radiant tube are provided so as to be in contact with each other. According to the characteristic configuration of claim 3, the posture of the combustion cylinder is held by the holding body provided in a state of being brought into contact with the outer peripheral surface of the combustion cylinder and the inner peripheral surface of the radiant tube. That is, since the holding body holds the posture of the combustion cylinder, it is possible to suppress the eccentricity of the combustion cylinder,
It is possible to suppress the formed flame from coming into contact with or coming too close to the radiant tube, and it is possible to improve the durability of the radiant tube. By the way, claim 2
In the invention according to claim 3, when the characteristic configuration according to claim 3 is carried out, by the cooperation of the supporting action of the combustion cylinder by the funnel-shaped inner peripheral surface of the support and the retaining action of the combustion cylinder by the holding body, Since the eccentricity of the combustion cylinder can be further suppressed, the durability of the radiant tube can be further improved, which is preferable. Therefore, in the heat storage type radiant tube combustion device, while improving the durability,
It has become possible to achieve low NOx and high thermal efficiency.
【０００９】[0009]
【発明の実施の形態】以下、図面に基づいて、本発明の
実施の形態を説明する。図１に示すように、蓄熱式ラジ
アントチューブ燃焼装置は、Ｗ字状等のラジアントチュ
ーブ１の両端部のそれぞれに、ラジアントチューブ１内
にてガス燃料Ｇを燃焼させるように構成したバーナＢを
設けて構成してある。バーナＢは、ラジアントチューブ
１内にガス燃料Ｇを供給する燃料供給部としてのガスノ
ズル２（図２参照）と、そのガスノズル２の外周部を囲
む環状に形成され且つ蓄熱体３を通気可能な状態で備え
た給排路４（図２参照）とを備えた本体部Ｂｍを備えて
構成し、ラジアントチューブ１を炉内Ｒに位置させ且つ
バーナＢの本体部Ｂｍを炉外に位置させた状態で、炉壁
Ｗに支持して設けて、ラジアントチューブ１を介して間
接的に炉内Ｒを加熱するように構成してある。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the heat storage type radiant tube combustor is provided with burners B configured to burn the gas fuel G in the radiant tube 1 at both ends of the W-shaped radiant tube 1. Configured. The burner B is a gas nozzle 2 (see FIG. 2) as a fuel supply unit for supplying the gas fuel G into the radiant tube 1, an annular shape surrounding the outer peripheral portion of the gas nozzle 2, and a state in which the heat storage body 3 can be ventilated. A state in which the radiant tube 1 is located inside the furnace R and the body Bm of the burner B is located outside the furnace. Then, it is provided so as to be supported by the furnace wall W and indirectly heats the inside of the furnace R via the radiant tube 1.
【００１０】一対のガスノズル２のそれぞれに対して、
ガス燃料Ｇを供給する燃料供給路２１を接続すると共
に、各燃料供給路２１には、ガス燃料Ｇの供給を断続す
る開閉弁２２を設けてあり、その一対の開閉弁２２を交
互に開弁することにより、一対のガスノズル２に交互に
ガス燃料Ｇを供給するようにしてある。つまり、一対の
開閉弁２２により、燃料供給切換手段を構成してある。
四方弁２３の一対の給排気口（図示省略）に対して、一
対の給排路４を給排管路２４て各別に接続し、給気口
（図示省略）に対して給気用送風機２５を給気路２６に
て接続し、並びに、排気口（図示省略）に対して排気用
送風機２７を排気路２８にて接続してある。そして、四
方弁２３の切り換えにより、一対の給排路４について、
給気用送風機２５により燃焼用空気Ａが燃焼用酸素含有
ガスとして供給される状態と、排気用送風機２７が吸気
作用する状態とに背反的に切り換えるようにして、四方
弁２３を給排気切換手段として機能させるように構成し
てある。又、給気路２６には、エジェクタ２９を設ける
と共に、排気路２８とエジェクタ２９の吸引部とを排気
再循環路３０にて接続してあり、それによって、燃焼用
空気Ａにラジアントチューブ１から排出された燃焼ガス
Ｅの一部を混合して、燃焼ガスＥの一部をバーナＢ内に
再循環するように構成してある。For each of the pair of gas nozzles 2,
The fuel supply path 21 for supplying the gas fuel G is connected, and each fuel supply path 21 is provided with an on-off valve 22 for intermittently supplying the gas fuel G, and the pair of on-off valves 22 are alternately opened. By doing so, the gas fuel G is alternately supplied to the pair of gas nozzles 2. That is, the pair of on-off valves 22 constitutes a fuel supply switching means.
The pair of air supply / exhaust ports (not shown) of the four-way valve 23 are separately connected to the pair of air supply / exhaust lines 4 by the air supply / exhaust pipe lines 24, and the air supply blower 25 is connected to the air supply port (not shown). Is connected by an air supply path 26, and an exhaust blower 27 is connected by an exhaust path 28 to an exhaust port (not shown). Then, by switching the four-way valve 23, with respect to the pair of supply / discharge paths 4,
The four-way valve 23 is provided with a supply / exhaust switching means so that the state in which the combustion air A is supplied as the combustion oxygen-containing gas by the air supply blower 25 and the state in which the exhaust air blower 27 acts as the intake air are set in a contradictory manner. It is configured to function as. In addition, an ejector 29 is provided in the air supply passage 26, and the exhaust passage 28 and the suction portion of the ejector 29 are connected by an exhaust gas recirculation passage 30, whereby the combustion air A from the radiant tube 1 is connected. A part of the discharged combustion gas E is mixed and a part of the combustion gas E is recirculated into the burner B.
【００１１】次に、図２及び図３に基づいて、バーナＢ
について説明を加える。尚、図３においては、ガス燃料
Ｇの流れを実線矢印にて示し、燃焼用酸素含有ガスとし
ての燃焼用空気Ａの流れを一点鎖線矢印にて示し、燃焼
ガスＥの流れを破線矢印にて示し、図面上の右側のバー
ナＢはガス燃料Ｇが供給され、左側のバーナＢはガス燃
料の供給が停止されている状態を示す。バーナＢの本体
部Ｂｍは、円筒状の外筒５内に、その外筒５よりも小径
の円筒状の内筒６を同軸状に設け、外筒５と内筒６との
間の環状の空間を給排気路４とし、その給排気路４内に
多孔状に形成されて通気可能な蓄熱体３を設け、内筒６
内に、ガスノズル２をそのガス噴出部を内筒６の先端開
口部から内方側に引退させた状態で、内筒６と同軸状に
配設して構成してある。Next, based on FIGS. 2 and 3, the burner B will be described.
Will be added. In FIG. 3, the flow of the gas fuel G is shown by the solid line arrow, the flow of the combustion air A as the combustion oxygen-containing gas is shown by the one-dot chain line arrow, and the flow of the combustion gas E is shown by the broken line arrow. In the drawing, the burner B on the right side of the drawing shows the state in which the gas fuel G is supplied, and the burner B on the left side shows the state in which the supply of the gas fuel is stopped. The main body Bm of the burner B has a cylindrical inner cylinder 6 having a diameter smaller than that of the outer cylinder 5 provided coaxially in the cylindrical outer cylinder 5, and an annular shape between the outer cylinder 5 and the inner cylinder 6. The space is used as an air supply / exhaust path 4, and a porous heat storage body 3 is provided in the air supply / exhaust path 4, and an inner cylinder 6 is provided.
Inside, the gas nozzle 2 is arranged coaxially with the inner cylinder 6 in a state in which the gas ejection portion of the gas nozzle 2 is retracted inward from the front end opening of the inner cylinder 6.
【００１２】そして、図２ないし図６に示すように、本
発明においては、ラジアントチューブ１の両端部のそれ
ぞれに、外径がラジアントチューブ１の内径よりも小径
の燃焼筒７を、ガスノズル２よりも先方に位置してラジ
アントチューブ１内に挿入する状態で設け、その燃焼筒
７における基端部を、その基端側ほど漸次径が太くな
り、且つ、その基端側の開口端縁がガスノズル２からの
ガス燃料噴出方向視でガスノズル２を内在させて給排気
路４における内周縁と外周縁との間に位置する状態の漏
斗状部７ｒとなるように構成して、ガスノズル２からガ
ス燃料Ｇが燃焼筒７内に供給されると共に、燃焼筒７の
内部及び外部が給排路４に連通されるように構成してあ
る。As shown in FIGS. 2 to 6, in the present invention, a combustion cylinder 7 having an outer diameter smaller than the inner diameter of the radiant tube 1 is provided at each end of the radiant tube 1 from the gas nozzle 2. Is also provided in a state of being inserted into the radiant tube 1 at the front side, and the diameter of the base end portion of the combustion tube 7 is gradually increased toward the base end side, and the opening end edge on the base end side is the gas nozzle. When viewed from the direction of jetting of the gas fuel from 2, the gas nozzle 2 is arranged so as to be a funnel-shaped portion 7r positioned between the inner peripheral edge and the outer peripheral edge of the air supply / exhaust passage 4, and the gas nozzle 2 supplies the gas fuel. G is supplied into the combustion cylinder 7, and the inside and outside of the combustion cylinder 7 are connected to the supply / discharge passage 4.
【００１３】更に、燃焼筒７をバーナＢの本体部Ｂｍに
支持する支持体としてのバーナタイル８を、燃焼筒７の
漏斗状部７ｒの外周面に接触する漏斗状の内周面８ｒを
備えた環状に形成して、その漏斗状の内周面８ｒに漏斗
状部７ｒの外周面が当て付けられる状態で燃焼筒７を支
持するように構成し、そのバーナタイル８に、給排気路
４とラジアントチューブ１内におけるバーナタイル８よ
りも先端側とを連通させる連通路９を設けてある。Further, a burner tile 8 as a support for supporting the combustion cylinder 7 on the main body Bm of the burner B is provided with a funnel-shaped inner peripheral surface 8r which contacts the outer peripheral surface of the funnel-shaped portion 7r of the combustion cylinder 7. It is formed in a ring shape, and is configured to support the combustion cylinder 7 in a state where the outer peripheral surface of the funnel-shaped portion 7r is abutted against the funnel-shaped inner peripheral surface 8r. There is provided a communication passage 9 that communicates with the tip end side of the burner tile 8 in the radiant tube 1.
【００１４】燃焼筒７について説明を加えると、燃焼筒
７の先端側は直円筒状に構成し、基端側の漏斗状部７ｒ
の基端開口縁には、周方向に等間隔を隔てて、径方向外
方に突出する複数の鍔部７ｆを設けてある。The combustion cylinder 7 will be described. The front end side of the combustion cylinder 7 is formed in a right cylindrical shape, and the funnel-shaped portion 7r on the base end side is formed.
A plurality of flange portions 7f projecting outward in the radial direction are provided at the base end opening edge of the at equal intervals in the circumferential direction.
【００１５】バーナタイル８について説明を加えると、
バーナタイル８の外周面は円柱の側周面状に構成し、そ
のバーナタイル８の漏斗状の内周面８ｒには、燃焼筒７
の鍔部７ｆと同数の凹溝８ｍを、それぞれがバーナタイ
ル８の軸心方向全長にわたって延びる状態で、周方向に
等間隔を隔てて構成してある。上述のように構成したバ
ーナタイル８を、円筒状のタイルケーシング１０に内嵌
状態で取り付けてある。If the burner tile 8 is further explained,
The outer peripheral surface of the burner tile 8 is formed in a side peripheral surface of a cylinder, and the funnel-shaped inner peripheral surface 8r of the burner tile 8 has a combustion cylinder 7
The same number of recessed grooves 8m as that of the brim portion 7f are formed at equal intervals in the circumferential direction in a state of extending over the entire length of the burner tile 8 in the axial direction. The burner tile 8 configured as described above is attached to a cylindrical tile casing 10 in an internally fitted state.
【００１６】燃焼筒７をその先端側からバーナタイル８
の孔に挿入し、バーナタイル８における隣接する凹溝８
ｍの開口部同士の間に鍔部７ｆが位置するように周方向
に位置合わせした状態で、漏斗状の内周面８ｒに漏斗状
部７ｒの外周面を当て付けた状態とする。The combustion cylinder 7 is provided with a burner tile 8 from its tip end side.
Of the burner tile 8 adjacent to the groove 8
It is assumed that the outer peripheral surface of the funnel-shaped portion 7r is abutted against the funnel-shaped inner peripheral surface 8r in a state where the flange portion 7f is positioned between the openings of m in the circumferential direction.
【００１７】そして、上述のように燃焼筒７を挿入した
バーナタイル８を、燃焼筒７の基端開口縁が、ガスノズ
ル２からのガス燃料噴出方向視でガスノズル２を内在さ
せて給排気路４における内周縁と外周縁との間に位置す
る姿勢で、タイルケーシング１０を用いてねじ式の結合
手段１１にて本体部Ｂｍの外筒５に組み付けることによ
り、燃焼筒７を、その漏斗状部７ｒの外周面がバーナタ
イル８の漏斗状の内周面８ｒに当て付けられる状態で本
体部Ｂｍに支持させて、バーナＢを構成してある。尚、
図中の１４は、スパークロッドである。更に、ラジアン
トチューブ１を、その基端開口部に燃焼筒７の先端側の
直円筒状部分を挿入させた状態で、タイルケーシング１
０にねじ式の結合手段１２にて支持させてある。The burner tile 8 having the combustion tube 7 inserted therein as described above is arranged such that the base end opening edge of the combustion tube 7 has the gas nozzle 2 inside when viewed from the direction of gas fuel injection from the gas nozzle 2. In the posture between the inner peripheral edge and the outer peripheral edge of the combustion chamber 7, the tile casing 10 is used to attach the combustion cylinder 7 to the outer cylinder 5 of the main body Bm by the screw-type coupling means 11 so that the funnel-shaped portion is formed. The burner B is configured by supporting the outer peripheral surface of 7r against the funnel-shaped inner peripheral surface 8r of the burner tile 8 by the main body Bm. still,
Reference numeral 14 in the drawing is a spark rod. Furthermore, the tile casing 1 with the radiant tube 1 having the straight cylindrical portion on the front end side of the combustion cylinder 7 inserted into the base end opening thereof
0 is supported by a screw type coupling means 12.
【００１８】更に、燃焼筒７における漏斗状部７ｒより
も先端側に対応する箇所に、燃焼筒７の姿勢を保持する
環状の保持体１３を、燃焼筒７の外周面とラジアントチ
ューブ１の内周面とに当て付けられる状態で嵌め込ん
で、燃焼筒７の姿勢を保持するようにしてある。その環
状の保持体１３には、軸心方向に貫通して、ラジアント
チューブ１における保持体１３の両側部分を連通する連
通孔１３ｈの複数を周方向に間隔を隔てて設けてある。Further, an annular holding body 13 for holding the posture of the combustion cylinder 7 is provided at a portion of the combustion cylinder 7 that is closer to the tip end side than the funnel-shaped portion 7r, and an outer peripheral surface of the combustion cylinder 7 and the inside of the radiant tube 1. The combustion cylinder 7 is held in the posture in which it is fitted in a state of being pressed against the peripheral surface. The annular holding body 13 is provided with a plurality of communicating holes 13h penetrating in the axial direction and communicating with both side portions of the holding body 13 in the radiant tube 1 at intervals in the circumferential direction.
【００１９】つまり、バーナタイル８の漏斗状の内周面
８ｒに形成した複数の凹溝８ｍを、給排気路４とラジア
ントチューブ１内におけるバーナタイル８よりも先端側
とを連通させる連通路９として機能させるように構成し
てある。That is, a plurality of recessed grooves 8m formed in the funnel-shaped inner peripheral surface 8r of the burner tile 8 communicates the air supply / exhaust passage 4 with the tip end side of the burner tile 8 in the radiant tube 1. It is configured to function as.
【００２０】図２に示すように、ガス燃料Ｇが供給され
る方のバーナＢにおいては、ガスノズル２から燃焼筒７
内にガス燃料Ｇが噴出されると共に、給排路４を流動し
て蓄熱体３にて予熱された燃焼用空気Ａが燃焼筒７の内
部及び外部に供給され、燃焼筒７の内部に供給された燃
焼用空気Ａは、燃焼筒７の内部を流動し、燃焼筒７の外
部に供給された燃焼用空気Ａは、バーナタイル８に設け
た連通路９及び保持体１３に設けた連通孔１３ｈを通過
しながら、燃焼筒７の外周部を燃焼筒７の先端よりも先
方に流動する。そして、燃焼筒７内に噴出されたガス燃
料Ｇの一部は、燃焼筒７内で、その燃焼筒７の内部に供
給された燃焼用空気Ａと混合されて燃焼し、残部は、燃
焼筒７の先端から流出して、燃焼筒７の外周部を燃焼筒
７の先端よりも先方に流動してきた燃焼用空気Ａと混合
されて燃焼する形態で、ガスノズル２から噴出されたガ
ス燃料Ｇが２段燃焼する。As shown in FIG. 2, in the burner B to which the gas fuel G is supplied, the gas nozzle 2 to the combustion cylinder 7 are connected.
The gas fuel G is jetted into the inside, and the combustion air A that has flowed through the supply / discharge passage 4 and is preheated by the heat storage body 3 is supplied to the inside and the outside of the combustion cylinder 7, and is supplied to the inside of the combustion cylinder 7. The generated combustion air A flows inside the combustion cylinder 7, and the combustion air A supplied to the outside of the combustion cylinder 7 communicates with the communication passage 9 provided in the burner tile 8 and the communication hole provided in the holder 13. While passing through 13h, it flows in the outer peripheral portion of the combustion cylinder 7 ahead of the tip of the combustion cylinder 7. Then, a part of the gas fuel G ejected into the combustion cylinder 7 is mixed with the combustion air A supplied into the combustion cylinder 7 and burns in the combustion cylinder 7, and the rest is the combustion cylinder. The gas fuel G ejected from the gas nozzle 2 in a form of being mixed with the combustion air A flowing out from the tip of the combustion cylinder 7 and flowing on the outer peripheral portion of the combustion cylinder 7 ahead of the tip of the combustion cylinder 7, is burned. Burn in two stages.
【００２１】ちなみに、給排気路４に対して燃焼筒７の
内部が連通する面積（即ち、燃焼筒７の基端の開口部に
おいて、給排気路４に対して臨む部分の面積）と、給排
気路４に対して燃焼筒７の外部が連通する面積（即ち、
給排気路４に対して開く連通路９の開口部の面積）の比
は、概ね、８：２である。つまり、ガス燃料に対して、
一段目で混合させる燃焼用空気量と、２段目で混合させ
る燃焼用空気量との比は、概ね８：２である。尚、低Ｎ
Ｏｘ化及び燃焼の安定性を両立させるためには、ガス燃
料に対して一段目と２段目で混合させる燃焼用空気量の
比は、８：２〜１：１の範囲に設定するのが好ましい。Incidentally, the area where the inside of the combustion cylinder 7 communicates with the supply / exhaust passage 4 (that is, the area of the portion of the opening at the base end of the combustion cylinder 7 which faces the supply / exhaust passage 4), The area where the outside of the combustion cylinder 7 communicates with the exhaust passage 4 (that is,
The ratio of the area of the opening of the communication passage 9 opened to the air supply / exhaust passage 4 is approximately 8: 2. In other words, for gas fuel,
The ratio of the amount of combustion air mixed in the first stage to the amount of combustion air mixed in the second stage is approximately 8: 2. Low N
In order to achieve both Ox conversion and combustion stability, the ratio of the amount of combustion air to be mixed with the gas fuel in the first stage and the second stage is set in the range of 8: 2 to 1: 1. preferable.
【００２２】又、ガス燃料Ｇの供給が停止されるバーナ
Ｂにおいては、排気用送風機２７の吸気作用により、他
方のバーナＢにて生じる燃焼ガスＥが、燃焼筒７の先端
側から燃焼筒７の内部及び外周部に流入して、燃焼筒７
の内部及び外周部を流動して給排路４に流入し、その給
排路４を流動する過程で保有熱を蓄熱体３に放熱して蓄
熱体３を加熱した後、排出される。Further, in the burner B in which the supply of the gas fuel G is stopped, the combustion gas E generated in the other burner B by the intake action of the exhaust blower 27 from the tip end side of the combustion cylinder 7 to the combustion cylinder 7 Flows into the inner and outer peripheral parts of the combustion cylinder 7
Flowing in the inner and outer peripheral portions of the heat exchanger 3 and flowing into the supply / discharge passage 4, and in the process of flowing in the supply / discharge passage 4, the retained heat is radiated to the heat storage body 3 to heat the heat storage body 3 and then discharged.
【００２３】〔別実施形態〕次に別実施形態を説明す
る。
（イ） 上記の実施形態においては、連通路９の具体構
成として、バーナタイル８の漏斗状の内周面８ｒに形成
した凹溝８ｍにて構成する場合について例示したが、こ
れに限定されるものではなく、例えば、バーナタイル８
にその軸心方向に貫通するように形成した孔でも良い。[Other Embodiments] Next, other embodiments will be described. (A) In the above-described embodiment, the case where the communication passage 9 is configured by the concave groove 8m formed in the funnel-shaped inner peripheral surface 8r of the burner tile 8 has been described as an example, but the invention is not limited to this. Not a thing, for example, a burner tile 8
It may be a hole formed so as to penetrate in the axial direction.
【００２４】（ロ） 上記の実施形態においては、保持
体１３を環状に構成して、燃焼筒７をその全周にわたっ
て保持するように構成する場合について例示したが、燃
焼筒７における周方向の一部分を保持するように構成し
ても良い。例えば、ラジアントチューブ１を横向きに設
ける場合は、保持体１３を横向き姿勢の燃焼筒７の周方
向における下方側に相当する部分に設けて、燃焼筒７を
その下方側から受けて保持するようにしても良い。(B) In the above embodiment, the holder 13 is formed in an annular shape to hold the combustion cylinder 7 over the entire circumference thereof. You may comprise so that a part may be hold | maintained. For example, when the radiant tube 1 is provided laterally, the holder 13 is provided at a portion corresponding to the lower side in the circumferential direction of the combustion cylinder 7 in the horizontal posture so that the combustion cylinder 7 is received and held from the lower side. May be.
【００２５】（ハ） 上記の実施形態のように保持体１
３を環状に構成して、燃焼筒７をその全周にわたって保
持するように構成する場合、燃焼用空気や燃焼ガスが燃
焼筒７の長手方向に対応する方向に保持体１３を通過し
て流動可能なようにするに当たっては、保持体１３に連
通孔１３ｈを形成する代わりに、保持体１３を通気可能
な多孔状の材料にて形成しても良い。(C) The holder 1 as in the above embodiment.
When 3 is configured in an annular shape and is configured to hold the combustion cylinder 7 around the entire circumference thereof, combustion air and combustion gas flow through the holding body 13 in a direction corresponding to the longitudinal direction of the combustion cylinder 7. In order to make it possible, instead of forming the communication hole 13h in the holding body 13, the holding body 13 may be formed of a breathable porous material.
【００２６】（ニ） 上記の実施形態においては、ガス
燃料に対して燃焼用空気を２段で混合させて、ガス燃料
を２段燃焼させるように構成する場合について例示した
が、ガス燃料に対して燃焼用空気を３段以上で混合させ
て、ガス燃料を３段以上で燃焼させるように構成しても
良い。この場合は、燃焼筒７の外部を流動する燃焼用空
気を燃焼筒７の先方においてラジアントチューブ１の長
手方向の異なる箇所でガス燃料に混合させるべく、燃焼
用空気を導くように流路を設ける。(D) In the above embodiment, the case where the combustion air is mixed with the gas fuel in two stages and the gas fuel is burned in two stages has been exemplified. The combustion air may be mixed in three or more stages to burn the gas fuel in three or more stages. In this case, in order to mix the combustion air flowing outside the combustion cylinder 7 with the gas fuel at different points in the longitudinal direction of the radiant tube 1 ahead of the combustion cylinder 7, a passage is provided so as to guide the combustion air. .
【図１】実施形態に係る蓄熱式ラジアントチューブ燃焼
装置の全体概略構成を示す側面図FIG. 1 is a side view showing an overall schematic configuration of a heat storage type radiant tube combustion device according to an embodiment.
【図２】実施形態に係る蓄熱式ラジアントチューブ燃焼
装置のバーナ周辺の縦断面図FIG. 2 is a vertical cross-sectional view around a burner of the heat storage type radiant tube combustion device according to the embodiment.
【図３】実施形態に係る蓄熱式ラジアントチューブ燃焼
装置の要部の縦断面図FIG. 3 is a vertical cross-sectional view of a main part of a heat storage type radiant tube combustion device according to an embodiment.
【図４】図２のイ−イ矢視図FIG. 4 is a view as seen from an arrow in FIG.
【図５】図２のロ−ロ矢視図FIG. 5 is a view on arrow of FIG.
【図６】図２のハ−ハ矢視図FIG. 6 is a view as seen from the arrow of FIG.
１ ラジアントチューブ ２ 燃料供給部 ３ 蓄熱体 ４ 給排路 ７ 燃焼筒 ７ｒ 漏斗状部 ８ 支持体 ８ｒ 漏斗状の内周面 ９ 連通路 １３ 保持体 ２２ 燃料供給切換手段 ２３ 給排気切換手段 Ａ 燃焼用酸素含有ガス Ｂｍ 本体部 Ｅ 燃焼ガス Ｇ ガス燃料 1 Radiant tube 2 Fuel supply section 3 heat storage 4 supply and discharge routes 7 Combustion cylinder 7r funnel 8 support 8r Funnel-shaped inner peripheral surface 9 passages 13 Holder 22 Fuel supply switching means 23 Air supply / exhaust switching means A Oxygen-containing gas for combustion Bm body E Combustion gas G gas fuel
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3K017 BA01 BA06 BB04 BB05 BB06 BE03 BE10 DC03 DC04 3K023 QA16 QB01 QC07 3K091 AA01 BB08 BB26 CC06 CC22 EA06 EA15 EA22 EA23 EA28 ─────────────────────────────────────────────────── ─── Continued front page F-term (reference) 3K017 BA01 BA06 BB04 BB05 BB06 BE03 BE10 DC03 DC04 3K023 QA16 QB01 QC07 3K091 AA01 BB08 BB26 CC06 CC22 EA06 EA15 EA22 EA23 EA28
Claims (3)
に、そのラジアントチューブ内にガス燃料を供給する燃
料供給部と、その燃料供給部の外周部を囲む環状に形成
され且つ蓄熱体を通気可能な状態で備えた給排路とを備
えた本体部が設けられ、 前記一対の燃料供給部に交互にガス燃料が供給されるよ
うにガス燃料供給を切り換える燃料供給切換手段と、 ガス燃料が供給される方の前記燃料供給部に対応する前
記給排気路には燃焼用酸素含有ガスを供給し、且つ、ガ
ス燃料の供給が停止される方の前記燃料供給部に対応す
る前記給排路からは前記ラジアントチューブ内の燃焼ガ
スを排気するように給排気状態を切り換える給排気切換
手段とが設けられた蓄熱式ラジアントチューブ燃焼装置
であって、 前記ラジアントチューブの両端部のそれぞれに、外径が
前記ラジアントチューブの内径よりも小径の燃焼筒が、
前記燃料供給部よりも先方に位置して前記ラジアントチ
ューブ内に挿入される状態で設けられ、 その燃焼筒における基端部が、その基端側ほど漸次径が
太くなり、且つ、その基端側の開口端縁が前記燃料供給
部からのガス燃料噴出方向視で前記燃料供給部を内在さ
せて前記給排気路における内周縁と外周縁との間に位置
する状態の漏斗状部となるように構成されて、 前記燃料供給部からガス燃料が前記燃焼筒内に供給され
ると共に、前記燃焼筒の内部及び外部が前記給排路に連
通されるように構成されている蓄熱式ラジアントチュー
ブ燃焼装置。1. A fuel supply part for supplying a gas fuel into the radiant tube and an annular shape surrounding the outer peripheral part of the fuel supply part at each of both ends of the radiant tube and being capable of ventilating a heat storage body. And a fuel supply switching unit for switching the gas fuel supply so that the gas fuel is alternately supplied to the pair of fuel supply units, and the gas fuel is supplied. The oxygen-containing gas for combustion is supplied to the supply / exhaust path corresponding to the one fuel supply section, and the supply / exhaust path corresponding to the fuel supply section where the supply of the gas fuel is stopped is A heat storage type radiant tube combustion device provided with a supply / exhaust switching means for switching the supply / exhaust state so as to exhaust the combustion gas in the radiant tube, which is that of both ends of the radiant tube. In each case, a combustion cylinder whose outer diameter is smaller than the inner diameter of the radiant tube,
It is provided in a state of being inserted into the radiant tube positioned ahead of the fuel supply section, and the base end portion of the combustion cylinder has a diameter gradually increasing toward the base end side, and the base end side. The opening end edge of the fuel supply portion is a funnel-shaped portion that is located between the inner peripheral edge and the outer peripheral edge of the supply / exhaust passage with the fuel supply portion inside when viewed from the direction of gas fuel injection. A heat storage radiant tube combustion device configured to supply gas fuel from the fuel supply unit into the combustion cylinder and to communicate the inside and the outside of the combustion cylinder with the supply / discharge passage. .
体が、前記漏斗状部の外周面に接触する漏斗状の内周面
を備えた環状に形成されて、その漏斗状の内周面に前記
漏斗状部の外周面が当て付けられる状態で前記燃焼筒を
支持するように構成され、 前記支持体に、前記給排気路と前記ラジアントチューブ
内における前記支持体よりも先端側とを連通させる連通
路が設けられている請求項１記載の蓄熱式ラジアントチ
ューブ燃焼装置。2. A support body for supporting the combustion cylinder on the main body portion is formed in an annular shape having a funnel-shaped inner peripheral surface that contacts the outer peripheral surface of the funnel-shaped portion, and the funnel-shaped inner peripheral surface thereof. It is configured to support the combustion cylinder in a state in which the outer peripheral surface of the funnel-shaped portion is abutted against the surface, the support body, the supply and exhaust passage and the tip side of the support in the radiant tube than the support body. The heat storage type radiant tube combustion apparatus according to claim 1, wherein a communication passage is provided for communication.
先端側に対応する箇所に、前記燃焼筒の姿勢を保持する
保持体が、前記燃焼筒の外周面と前記ラジアントチュー
ブの内周面とに当て付けられる状態で設けられている請
求項１又は２記載の蓄熱式ラジアントチューブ燃焼装
置。3. A holding body for holding the posture of the combustion cylinder is provided at a position corresponding to a tip side of the funnel-shaped portion in the combustion cylinder, the outer peripheral surface of the combustion cylinder and the inner peripheral surface of the radiant tube. The heat storage type radiant tube combustion device according to claim 1 or 2, which is provided in a state of being applied to the heat storage type radiant tube combustion device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002086658A JP4007835B2 (en) | 2002-03-26 | 2002-03-26 | Thermal storage radiant tube combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002086658A JP4007835B2 (en) | 2002-03-26 | 2002-03-26 | Thermal storage radiant tube combustion device |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2007140376A Division JP2007278693A (en) | 2007-05-28 | 2007-05-28 | Regenerative radiant tube combustion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003279002A true JP2003279002A (en) | 2003-10-02 |
| JP4007835B2 JP4007835B2 (en) | 2007-11-14 |
Family
ID=29233183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002086658A Expired - Lifetime JP4007835B2 (en) | 2002-03-26 | 2002-03-26 | Thermal storage radiant tube combustion device |
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| Country | Link |
|---|---|
| JP (1) | JP4007835B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008107032A (en) * | 2006-10-26 | 2008-05-08 | Jfe Steel Kk | Long flame burner and radiant tube type heater |
| JP2008107031A (en) * | 2006-10-26 | 2008-05-08 | Jfe Steel Kk | Tubular flame burner and radiant tube type heater |
| JP2012037232A (en) * | 2011-11-18 | 2012-02-23 | Jfe Steel Corp | Long flame burner and radiant tube heater |
| JP2012063132A (en) * | 2011-11-18 | 2012-03-29 | Jfe Steel Corp | Tubular flame burner and radiation tube heating apparatus |
| JP2013527420A (en) * | 2010-05-27 | 2013-06-27 | シーメンス アクティエンゲゼルシャフト | Burner insertion aid for burner and method of inserting burner |
| CN115200014A (en) * | 2022-07-01 | 2022-10-18 | 北京兴达奇热工控制设备有限公司 | Air-gas double-preheating blast furnace gas radiation pipe combustion system |
-
2002
- 2002-03-26 JP JP2002086658A patent/JP4007835B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008107032A (en) * | 2006-10-26 | 2008-05-08 | Jfe Steel Kk | Long flame burner and radiant tube type heater |
| JP2008107031A (en) * | 2006-10-26 | 2008-05-08 | Jfe Steel Kk | Tubular flame burner and radiant tube type heater |
| JP2013527420A (en) * | 2010-05-27 | 2013-06-27 | シーメンス アクティエンゲゼルシャフト | Burner insertion aid for burner and method of inserting burner |
| US9151491B2 (en) | 2010-05-27 | 2015-10-06 | Siemens Aktiengesellschaft | Burner insertion aid for a burner, and method for inserting a burner |
| JP2012037232A (en) * | 2011-11-18 | 2012-02-23 | Jfe Steel Corp | Long flame burner and radiant tube heater |
| JP2012063132A (en) * | 2011-11-18 | 2012-03-29 | Jfe Steel Corp | Tubular flame burner and radiation tube heating apparatus |
| CN115200014A (en) * | 2022-07-01 | 2022-10-18 | 北京兴达奇热工控制设备有限公司 | Air-gas double-preheating blast furnace gas radiation pipe combustion system |
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| Publication number | Publication date |
|---|---|
| JP4007835B2 (en) | 2007-11-14 |
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