[go: up one dir, main page]

JP2008214670A - Continuous heating furnace - Google Patents

Continuous heating furnace Download PDF

Info

Publication number
JP2008214670A
JP2008214670A JP2007050893A JP2007050893A JP2008214670A JP 2008214670 A JP2008214670 A JP 2008214670A JP 2007050893 A JP2007050893 A JP 2007050893A JP 2007050893 A JP2007050893 A JP 2007050893A JP 2008214670 A JP2008214670 A JP 2008214670A
Authority
JP
Japan
Prior art keywords
combustion
fuel
supply nozzle
zone
heated
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
Application number
JP2007050893A
Other languages
Japanese (ja)
Inventor
Hirotoshi Uejima
啓利 上島
Tatsuo Tanaka
達夫 田中
Noriyuki Saito
憲幸 斎藤
Kenichiro Jojima
健一郎 城島
Makoto Kobayashi
誠 小林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chugai Ro Co Ltd
Nippon Steel Corp
Original Assignee
Chugai Ro Co Ltd
Sumitomo Metal Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chugai Ro Co Ltd, Sumitomo Metal Industries Ltd filed Critical Chugai Ro Co Ltd
Priority to JP2007050893A priority Critical patent/JP2008214670A/en
Publication of JP2008214670A publication Critical patent/JP2008214670A/en
Pending legal-status Critical Current

Links

Images

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

  • Air Supply (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Furnace Details (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Control Of Combustion (AREA)

Abstract

【課題】 燃焼装置が複数設けられた複数の燃焼ゾーンに被加熱物を順々に導いて加熱するにあたり、NOxの発生量を少なくしながら、安定して効率のよい加熱処理が行えるようにする。
【解決手段】 燃焼装置20が複数設けられた各燃焼ゾーン12〜15に被加熱物1を順々に導いて加熱する連続加熱炉において、少なくとも被加熱物の導入側の燃焼ゾーンに蓄熱部21を有する蓄熱式バーナー20を用い、燃焼ゾーン内の温度が所定温度以下の場合、蓄熱式バーナーを通した燃焼排ガスの排気を行わずに、空気供給ノズル22の先端側の燃焼部23内に、空気供給ノズルから加熱されていない燃焼用空気と第１燃料供給ノズル24から燃料とを噴出させ、点火手段25により点火させて燃焼させるようにした。
【選択図】 図３PROBLEM TO BE SOLVED: To stably and efficiently perform heat treatment while reducing the amount of NOx generated when sequentially heating an object to be heated to a plurality of combustion zones provided with a plurality of combustion devices. .
In a continuous heating furnace that sequentially guides and heats an object to be heated 1 to each of the combustion zones 12 to 15 provided with a plurality of combustion devices 20, a heat storage unit 21 is provided at least in the combustion zone on the introduction side of the object to be heated. When the temperature in the combustion zone is equal to or lower than the predetermined temperature, without exhausting the combustion exhaust gas through the heat storage burner, in the combustion part 23 on the tip side of the air supply nozzle 22, Combustion air that has not been heated from the air supply nozzle and fuel from the first fuel supply nozzle 24 are ejected and ignited by the ignition means 25 for combustion.
[Selection] Figure 3

Description

この発明は、被加熱物を、燃焼装置が複数設けられた複数の燃焼ゾーンに順々に導いて加熱する連続加熱炉に係り、特に、被加熱物の加熱処理時に発生するＮＯｘの量を少なくしながら、安定して効率のよい加熱が行えるようにした点に特徴を有するものである。   The present invention relates to a continuous heating furnace that sequentially heats an object to be heated to a plurality of combustion zones provided with a plurality of combustion devices, and particularly reduces the amount of NOx generated during the heat treatment of the object to be heated. However, it is characterized in that stable and efficient heating can be performed.

スラブなどの被加熱物を加熱するにあたり、従来から、予熱帯、加熱帯、均熱帯などの燃焼装置が複数設けられた複数の燃焼ゾーンを有する連続加熱炉内において、被加熱物を順々に上記の各燃焼ゾーンに導き、各燃焼ゾーンに設けられた燃焼装置により燃料を燃焼させて被加熱物を加熱処理することが行われている。   Conventionally, when heating an object to be heated such as a slab, the object to be heated is sequentially placed in a continuous heating furnace having a plurality of combustion zones provided with a plurality of combustion devices such as a pre-tropical zone, a heating zone, and a soaking zone. It is guided to each of the combustion zones described above, and the object to be heated is heated by burning the fuel with a combustion device provided in each combustion zone.

ここで、近年においては、このような連続加熱炉において、燃焼排ガスの熱を利用して効率のよい燃焼を行うために、上記の燃焼ゾーンに設ける燃焼装置として、燃焼排ガスの熱を蓄熱する蓄熱部を有する蓄熱式バーナーが使用されるようになっている。   Here, in recent years, in such a continuous heating furnace, in order to perform efficient combustion using the heat of combustion exhaust gas, as a combustion device provided in the combustion zone, heat storage for storing heat of combustion exhaust gas is stored. A regenerative burner having a part is used.

そして、このような蓄熱式バーナーを用いて各燃焼ゾーンにおいて被加熱物を加熱させる場合、各蓄熱式バーナーにおいて燃焼と排気とを交互に切り換え、排気時においては、この蓄熱式バーナーの燃焼を停止させ、排気される燃焼排ガスを上記の蓄熱部に導いて、この燃焼排ガスの熱を蓄熱部に蓄熱させる一方、燃焼時においては、このように蓄熱された蓄熱部に燃焼用空気を導いて加熱させ、このように加熱された燃焼用空気と燃料とを混合させて燃焼させるようになっている。   When heating an object to be heated in each combustion zone using such a regenerative burner, combustion and exhaust are alternately switched in each regenerative burner, and the combustion of this regenerative burner is stopped during exhaust. The exhaust gas to be exhausted is guided to the heat storage part, and the heat of the combustion exhaust gas is stored in the heat storage part, while at the time of combustion, the combustion air is guided to the heat storage part thus stored and heated. The combustion air thus heated and the fuel are mixed and burned.

しかし、このように常に加熱された燃焼用空気と燃料とを混合させて燃焼させるようにした場合、火炎の温度が高くなりすぎて、ＮＯｘが多く発生するという問題があった。   However, when the combustion air and fuel that are always heated are mixed and burned, there is a problem that the temperature of the flame becomes too high and a large amount of NOx is generated.

また、近年においては、燃焼用空気を供給する空気供給ノズルの先端側における燃焼部に、燃料を供給する第１燃料供給ノズルを設けると共に、この燃焼部の外周側に燃料を供給する第２燃料供給ノズルが設けられた燃焼装置を用い、炉内の温度に応じて、第１燃料供給ノズルから供給する燃料の量と、第２燃料供給ノズルから供給する燃料の量とを制御するようにした燃焼装置が提案されている（例えば、特許文献１及び２参照。）。   Further, in recent years, a first fuel supply nozzle that supplies fuel is provided in the combustion portion on the tip side of an air supply nozzle that supplies combustion air, and a second fuel that supplies fuel to the outer peripheral side of the combustion portion. Using a combustion apparatus provided with a supply nozzle, the amount of fuel supplied from the first fuel supply nozzle and the amount of fuel supplied from the second fuel supply nozzle are controlled according to the temperature in the furnace. Combustion devices have been proposed (see, for example, Patent Documents 1 and 2).

そして、上記の燃焼装置においては、炉内の温度が低い場合に、上記の第１燃料供給ノズルから供給する燃料の量を多くし、この第１燃料供給ノズルから供給された燃料と空気供給ノズルから供給された燃焼用空気とを上記の燃焼部において燃焼させて、発熱率の高い燃焼を行う一方、炉内の温度が高くなるに連れて、第２燃料供給ノズルから供給する燃料の量を増加させ、この第２燃料供給ノズルから供給された燃料を、炉内において炉内雰囲気ガスと空気と混合させて、酸素濃度の低い状態で燃焼させ、ＮＯｘの発生を抑制するようにしている。   In the above combustion apparatus, when the temperature in the furnace is low, the amount of fuel supplied from the first fuel supply nozzle is increased, and the fuel and air supply nozzle supplied from the first fuel supply nozzle The combustion air supplied from the combustion chamber is combusted in the combustion section to perform combustion with a high heat generation rate, while the amount of fuel supplied from the second fuel supply nozzle is increased as the temperature in the furnace increases. The fuel supplied from the second fuel supply nozzle is increased and mixed in the furnace with atmospheric gas and air in the furnace and burned in a low oxygen concentration state to suppress the generation of NOx.

しかし、上記の燃焼装置として、前記の蓄熱部を有する蓄熱式バーナーを用い、上記のように第１燃料供給ノズルから供給された燃料と空気供給ノズルから供給された燃焼用空気とを燃焼部において燃焼させるにあたり、蓄熱部において加熱された燃焼用空気を燃焼部に供給して燃焼させるようにした場合、燃焼時における火炎の温度が非常に高くなって、ＮＯｘの発生量が大きく増加するという問題があった。   However, as the above-described combustion device, a regenerative burner having the above-described heat storage unit is used, and the fuel supplied from the first fuel supply nozzle and the combustion air supplied from the air supply nozzle as described above are used in the combustion unit. In combustion, when the combustion air heated in the heat storage section is supplied to the combustion section and burned, the temperature of the flame at the time of combustion becomes very high and the amount of NOx generated increases greatly. was there.

また、上記のように予熱帯、加熱帯、均熱帯などの複数の燃焼ゾーンを有する連続加熱炉において、この連続加熱炉内に被加熱物を導入させる場合に、扉などの開口部からこの連続加熱炉内の高温雰囲気ガスが大量に放出されたり、外気が急激に入り込むことにより、さらには導入された被加熱物に急激に熱が奪われることにより、導入側における予熱帯や加熱帯などの燃焼ゾーン内における温度が大きく低下して、これらの燃焼ゾーン内の温度が燃料の着火温度よりも低くなるおそれがあり、安全かつ安定した加熱処理が行えなくなるおそれがあった。
特開平１−３００１０３号公報 特許第２９６７４５４号公報 Further, in the continuous heating furnace having a plurality of combustion zones such as the pre-tropical zone, the heating zone, and the soaking zone as described above, when the object to be heated is introduced into the continuous heating furnace, the continuous heating furnace is opened from the opening such as the door. A large amount of high-temperature atmospheric gas in the heating furnace is released, the outside air suddenly enters, and further, the heat to be introduced is suddenly taken away, so that the pre-tropical zone and the heating zone on the introduction side etc. The temperatures in the combustion zones are greatly reduced, and the temperatures in these combustion zones may be lower than the ignition temperature of the fuel, and there is a risk that safe and stable heat treatment cannot be performed.
JP-A-1-300103 Japanese Patent No. 2967454

この発明は、燃焼装置が複数設けられた複数の燃焼ゾーンを有する連続加熱炉内において、被加熱物を順々に上記の各燃焼ゾーンに導き、各燃焼ゾーンに設けられた燃焼装置により燃料を燃焼させて被加熱物を加熱する場合における上記のような問題を解決することを課題とするものである。   In the continuous heating furnace having a plurality of combustion zones provided with a plurality of combustion devices, the present invention sequentially introduces the object to be heated to each of the combustion zones, and supplies the fuel by the combustion devices provided in the combustion zones. An object of the present invention is to solve the above-described problems in heating an object to be heated by burning.

特に、この発明における連続加熱炉においては、被加熱物を導入させる導入側の燃焼ゾーンにおける燃焼装置に、燃焼排ガスの熱を蓄熱する蓄熱部を有し、燃焼用空気を供給する空気供給ノズルの先端側における燃焼部に、燃料を供給する第１燃料供給ノズルと点火手段とが設けられると共に、この燃焼部の外周側に燃料を供給する第２燃料供給ノズルが設けられた蓄熱式バーナーを用い、被加熱物の加熱時に発生するＮＯｘの量を少なくしながら、安定して効率のよい加熱が行えるようにすることを課題とするものである。   In particular, in the continuous heating furnace according to the present invention, an air supply nozzle for supplying combustion air having a heat storage section for storing heat of combustion exhaust gas in a combustion device in an introduction-side combustion zone for introducing an object to be heated. A regenerative burner in which a first fuel supply nozzle for supplying fuel and an ignition means are provided in the combustion section on the front end side and a second fuel supply nozzle for supplying fuel to the outer peripheral side of the combustion section is used. An object of the present invention is to enable stable and efficient heating while reducing the amount of NOx generated when heating an object to be heated.

この発明においては、上記のような課題を解決するため、燃焼装置が複数設けられた複数の燃焼ゾーンに被加熱物を順々に導いて加熱する連続加熱炉において、少なくとも被加熱物を導入させる導入側の燃焼ゾーンにおける燃焼装置として、燃焼排ガスの熱を蓄熱する蓄熱部を有する蓄熱式バーナーであって、燃焼用空気を供給する空気供給ノズルの先端側における燃焼部に、燃料を供給する第１燃料供給ノズルと点火手段とが設けられると共に、この第１燃焼部の外周側に燃料を供給する第２燃料供給ノズルが設けられた蓄熱式バーナーを用い、適当な蓄熱式バーナーを交互に燃焼させるにあたり、上記の燃焼ゾーン内の温度が所定温度以下の状態では、上記の蓄熱式バーナーを通した燃焼排ガスの排気を行わずに、上記の燃焼部内に、上記の空気供給ノズルから加熱されていない燃焼用空気を噴出させると共に上記の第１燃料供給ノズルから燃料を噴出させ、上記の点火手段により点火させて燃焼させるようにしたのである。   In the present invention, in order to solve the above-described problems, at least the article to be heated is introduced in a continuous heating furnace that sequentially guides and heats the article to be heated to a plurality of combustion zones provided with a plurality of combustion devices. As a combustion device in the combustion zone on the introduction side, a regenerative burner having a heat storage section for storing heat of combustion exhaust gas, and supplying fuel to the combustion section on the tip side of an air supply nozzle for supplying combustion air Using a regenerative burner provided with a fuel supply nozzle and ignition means, and provided with a second fuel supply nozzle for supplying fuel to the outer peripheral side of the first combustion section, an appropriate regenerative burner is alternately burned. When the temperature in the combustion zone is below a predetermined temperature, the exhaust gas is not exhausted through the regenerative burner and Together with ejecting combustion air which is not heated from the air supply nozzle is ejected fuel from the first fuel supply nozzle above is had as to burn by ignition by the ignition means.

また、この発明の連続加熱炉において、上記の燃焼ゾーン内の温度が所定温度を超えた状態では、上記の蓄熱式バーナーを通して燃焼ゾーン内の燃焼排ガスの排気を行って蓄熱部に燃焼排ガスの熱を蓄熱させると共に、上記の蓄熱された蓄熱部において加熱された燃焼用空気を上記の空気供給ノズルから燃焼部を通して上記の燃焼ゾーン内に噴出させると共に、上記の第２燃料供給ノズルから燃料を噴出させて燃焼させることが好ましい。   In the continuous heating furnace of the present invention, when the temperature in the combustion zone exceeds a predetermined temperature, the exhaust gas in the combustion zone is exhausted through the heat storage burner and the heat of the combustion exhaust gas is stored in the heat storage section. And the combustion air heated in the stored heat storage section is ejected from the air supply nozzle through the combustion section into the combustion zone and fuel is ejected from the second fuel supply nozzle. It is preferable to make it burn.

なお、この発明における連続加熱炉においては、上記のような切り換えを行う所定温度を、上記の燃焼ゾーン内において燃料が着火する温度よりも約５０℃高い温度に設定しておくことが好ましい。燃料が着火する温度よりも約５０℃高い温度であれば、局所的に低い温度域でも着火温度以上になり、確実に着火するためである。   In the continuous heating furnace according to the present invention, it is preferable that the predetermined temperature for switching as described above is set to a temperature approximately 50 ° C. higher than the temperature at which the fuel ignites in the combustion zone. This is because if the temperature is higher by about 50 ° C. than the temperature at which the fuel ignites, the temperature will be equal to or higher than the ignition temperature even in a locally low temperature range, and the fuel will ignite reliably.

また、この発明の連続加熱炉において、上記の燃焼ゾーン内の温度が所定温度以下の状態では、上記の蓄熱式バーナーを通した燃焼排ガスの排気を行わずに、上記の燃焼部内に、上記の空気供給ノズルから加熱されていない燃焼用空気を噴出させると共に、上記の第１燃料供給ノズルから燃料を噴出させ、上記の点火手段により点火させて燃焼を行う蓄熱式バーナーの他に、上記の燃焼を行わない蓄熱式バーナーが存在するようにし、上記の燃焼を行う蓄熱式バーナーと燃焼を行わない蓄熱式バーナーとを順々に切り換えるようにすることができる。   Further, in the continuous heating furnace of the present invention, in the state where the temperature in the combustion zone is equal to or lower than a predetermined temperature, the exhaust gas is not exhausted through the regenerative burner, and the combustion portion is in the combustion section. In addition to the regenerative burner that burns the combustion air that is not heated from the air supply nozzle, the fuel is jetted from the first fuel supply nozzle, and is ignited by the ignition means to perform combustion. There is a heat storage burner that does not perform combustion, and the heat storage burner that performs the combustion and the heat storage burner that does not perform combustion can be sequentially switched.

この発明における連続加熱炉においては、上記のように少なくとも被加熱物を導入させる導入側の燃焼ゾーンにおける燃焼装置に、燃焼排ガスの熱を蓄熱する蓄熱部を有し、燃焼用空気を供給する空気供給ノズルの先端側における燃焼部に、燃料を供給する第１燃料供給ノズルと点火手段とが設けられると共に、この第１燃焼部の外周側に燃料を供給する第２燃料供給ノズルが設けられた蓄熱式バーナーを用い、上記の燃焼ゾーンにおいて適当な蓄熱式バーナーを交互に燃焼させるにあたり、上記の燃焼ゾーン内の温度が所定温度以下の状態では、この蓄熱式バーナーを通した燃焼排ガスの排気を行わないようにしたため、この蓄熱式バーナーの蓄熱部に燃焼排ガスの熱が蓄熱されるということがなく、燃焼排ガスの熱がこの燃焼ゾーン内に残るようになる。   In the continuous heating furnace according to the present invention, as described above, the combustion apparatus in the combustion zone on the introduction side that introduces at least the object to be heated has a heat storage section that stores the heat of the combustion exhaust gas, and supplies the combustion air A first fuel supply nozzle for supplying fuel and an ignition means are provided in the combustion portion on the tip side of the supply nozzle, and a second fuel supply nozzle for supplying fuel is provided on the outer peripheral side of the first combustion portion. When a suitable regenerative burner is alternately burned in the combustion zone using a regenerative burner, the exhaust gas exhausted through the regenerative burner is exhausted when the temperature in the combustion zone is below a predetermined temperature. The heat of the combustion exhaust gas is not stored in the heat storage part of this regenerative burner, and the heat of the combustion exhaust gas is not stored in this combustion zone. It becomes so that.

そして、上記のように燃焼ゾーン内の温度が所定温度以下の状態では、上記の燃焼部内に、上記の空気供給ノズルから燃焼用空気を噴出させると共に上記の第１燃料供給ノズルから燃料を噴出させ、上記の点火手段により点火させて燃焼させるようにしたため、燃焼ゾーン内の温度が燃料の着火温度よりも低くなったとしても、安定した燃焼が行われるようになると共に、この燃焼部において火炎の温度の高い燃焼が行われて、上記の燃焼ゾーン内の温度が速やかに上昇されるようになる。   When the temperature in the combustion zone is equal to or lower than the predetermined temperature as described above, combustion air is ejected from the air supply nozzle and fuel is ejected from the first fuel supply nozzle into the combustion section. Since the ignition means ignites and burns, even if the temperature in the combustion zone becomes lower than the ignition temperature of the fuel, stable combustion is performed and the flame is High-temperature combustion is performed, and the temperature in the combustion zone is quickly raised.

さらに、この発明における連続加熱炉においては、上記のように燃焼部内において、上記の空気供給ノズルから噴出させた燃焼用空気と、第１燃料供給ノズルから噴出させた燃料とを、点火手段により点火させて燃焼させるにあたり、上記の空気供給ノズルから加熱されていない燃焼用空気を噴出させるようにしたため、燃焼時における火炎の温度が非常に高くなるということがなく、ＮＯｘの発生が抑制されるようになる。   Furthermore, in the continuous heating furnace according to the present invention, the combustion air ejected from the air supply nozzle and the fuel ejected from the first fuel supply nozzle are ignited by the ignition means in the combustion section as described above. When burning, the combustion air that has not been heated is ejected from the air supply nozzle, so that the flame temperature during combustion does not become very high, and the generation of NOx is suppressed. become.

また、この発明の連続加熱炉において、上記の燃焼ゾーン内の温度が所定温度を超えた場合に、上記の蓄熱式バーナーを通して燃焼ゾーン内の燃焼排ガスの排気を行い、上記の蓄熱部に燃焼排ガスの熱を蓄熱させ、このように蓄熱された蓄熱部において加熱された燃焼用空気を上記の空気供給ノズルから燃焼部を通して上記の燃焼ゾーン内に噴出させると共に、第２燃料供給ノズルから燃料を噴出させて燃焼させるようにすると、燃焼排ガスの熱が効率よく利用されるようになると共に、上記の第２燃料供給ノズルから噴出された燃料が、上記の燃焼ゾーン内における雰囲気ガス及び上記の加熱された燃焼用空気と混合され、酸素濃度の低い状態で燃焼されるようになり、燃焼時におけるＮＯｘの発生が抑制されるようになる。   In the continuous heating furnace of the present invention, when the temperature in the combustion zone exceeds a predetermined temperature, the exhaust gas in the combustion zone is exhausted through the heat storage burner, and the combustion exhaust gas is discharged to the heat storage section. In this way, the combustion air heated in the heat storage section that has been stored in this way is ejected from the air supply nozzle through the combustion section into the combustion zone and fuel is ejected from the second fuel supply nozzle. Thus, the heat of the combustion exhaust gas is used efficiently, and the fuel ejected from the second fuel supply nozzle is heated by the atmospheric gas and the heating in the combustion zone. It is mixed with the combustion air and burned in a low oxygen concentration state, and the generation of NOx during combustion is suppressed.

また、この発明における連続加熱炉において、上記のような切り換えを行う所定温度を、上記の燃焼ゾーン内において燃料が着火する温度よりも少し高い温度に設定しておくと、上記の燃焼ゾーン内の温度が燃料の着火温度より低くなるのが抑制され、安全かつ安定した燃焼が行われるようになる。   In the continuous heating furnace according to the present invention, if the predetermined temperature for switching as described above is set to a temperature slightly higher than the temperature at which the fuel ignites in the combustion zone, The temperature is suppressed from becoming lower than the ignition temperature of the fuel, and safe and stable combustion is performed.

以下、この発明の実施形態に係る連続加熱炉を添付図面に基づいて具体的に説明する。なお、この発明に係る連続加熱炉は下記の実施形態に示すものに限定されず、発明の要旨を変更しない範囲において、適宜変更して実施できるものである。   Hereinafter, a continuous heating furnace according to an embodiment of the present invention will be specifically described with reference to the accompanying drawings. In addition, the continuous heating furnace which concerns on this invention is not limited to what is shown to the following embodiment, In the range which does not change the summary of invention, it can implement by changing suitably.

この実施形態に係る連続加熱炉においては、図１に示すように、炉１０内を、予熱帯１２と第１加熱帯１３と第２加熱帯１４と均熱帯１５とからなる４つの燃焼ゾーン１２〜１５に区画すると共に、各燃焼ゾーン１２〜１５にそれぞれ複数の燃焼装置２０を設けている。   In the continuous heating furnace according to this embodiment, as shown in FIG. 1, four combustion zones 12 including a pretropical zone 12, a first heating zone 13, a second heating zone 14, and a soaking zone 15 are disposed in the furnace 10. And a plurality of combustion devices 20 are provided in each of the combustion zones 12 to 15.

そして、スラブなどの被加熱物１を上記の予熱帯１２の前に設けられた装入扉１６を通して炉１０内に順々に導入させ、この炉１０内に設けられた送りローラなどの炉内スラブ搬送機構１７により上記の被加熱物１を、予熱帯１２，第１加熱帯１３，第２加熱帯１４，均熱帯１５の順に移動させると共に、上記の各燃焼ゾーン１２〜１５に設けられた燃焼装置２０を燃焼させて、上記の被加熱物１を順々に加熱し、このように加熱した被加熱物１を均熱帯１５の後ろに設けられた抽出扉１８を通して炉１０内から順々に取り出すようにしている。なお、被加熱物１を炉１０内において順々に移動させる炉内スラブ搬送機構１７としては、上記のような送りローラ以外にウォーキングビームなどの公知の送り手段を用いることができる。   And the to-be-heated material 1 such as a slab is sequentially introduced into the furnace 10 through the charging door 16 provided in front of the pre-tropical zone 12, and the inside of the furnace such as a feed roller provided in the furnace 10 is introduced. The slab transfer mechanism 17 moves the heated object 1 in the order of the pre-tropical zone 12, the first heating zone 13, the second heating zone 14, and the soaking zone 15, and is provided in each of the combustion zones 12 to 15 described above. The combustion apparatus 20 is combusted to heat the heated object 1 in sequence, and the heated heated object 1 is sequentially moved from the furnace 10 through the extraction door 18 provided behind the soaking zone 15. I try to take it out. In addition, as the in-furnace slab transport mechanism 17 for sequentially moving the article 1 to be heated in the furnace 10, known feeding means such as a walking beam can be used in addition to the above-described feeding roller.

ここで、この実施形態に係る連続加熱炉においては、上記の各燃焼ゾーン１２〜１５に設ける燃焼装置２０として、図２に示すように、燃焼排ガスの熱を蓄熱する蓄熱材２１ａを収容させた蓄熱部２１を有し、燃焼用空気を供給する空気供給ノズル２２の先端側における燃焼部２３に、燃料を供給する第１燃料供給ノズル２４と点火手段２５とが設けられると共に、上記の燃焼部２３の外周側に燃料を供給する第２燃料供給ノズル２６が設けられた蓄熱式バーナー２０を用いるようにしている。   Here, in the continuous heating furnace which concerns on this embodiment, as shown in FIG. 2, the thermal storage material 21a which stores the heat | fever of combustion exhaust gas was accommodated as the combustion apparatus 20 provided in each said combustion zone 12-15. The combustion section 23 on the front end side of the air supply nozzle 22 that has the heat storage section 21 and supplies combustion air is provided with a first fuel supply nozzle 24 and an ignition means 25 for supplying fuel, and the combustion section described above A regenerative burner 20 provided with a second fuel supply nozzle 26 for supplying fuel to the outer peripheral side of 23 is used.

そして、この実施形態に係る連続加熱炉においては、上記の被加熱物１が導入される導入側における予熱帯１２において、この予熱帯１２内における温度を温度センサー（図示せず）などによって測定するようにしている。   And in the continuous heating furnace which concerns on this embodiment, in the pre-tropical zone 12 in the introduction side in which said to-be-heated material 1 is introduce | transduced, the temperature in this pre-tropical region 12 is measured with a temperature sensor (not shown) etc. I am doing so.

ここで、上記のように測定した予熱帯１２内の温度が所定温度以下になった場合、例えば、上記の燃料の着火温度が７５０℃程度の場合において、上記の予熱帯１２内の温度が８００℃以下になった場合には、上記の予熱帯１２に設けた適当な蓄熱式バーナー２０を交互に燃焼させるにあたり、燃焼を行わない蓄熱式バーナー２０においては、この予熱帯１２内における燃焼排ガスを、蓄熱式バーナー２０を通して排気させないようにし、この蓄熱式バーナー２０の蓄熱部２１に収容させた蓄熱材２１ａに燃焼排ガスの熱を蓄熱させないようにする。   Here, when the temperature in the pretropical zone 12 measured as described above becomes a predetermined temperature or lower, for example, when the ignition temperature of the fuel is about 750 ° C., the temperature in the pretropical zone 12 is 800. When the temperature is lower than or equal to 0 ° C., when the appropriate regenerative burner 20 provided in the pretropical zone 12 is alternately burned, in the regenerative burner 20 that does not perform combustion, The heat storage type burner 20 is not exhausted, and the heat storage material 21a accommodated in the heat storage unit 21 of the heat storage type burner 20 is prevented from storing heat of the combustion exhaust gas.

そして、この蓄熱式バーナー２０により燃焼を行う場合には、図３に示すように、上記の燃焼部２３内に、上記のように蓄熱されていない蓄熱部２１を通して加熱されていない燃焼用空気を空気供給ノズル２２から噴出させると共に、上記の第１燃料供給ノズル２４から燃料を噴出させ、この燃焼部２３内において、上記の燃焼用空気と燃料とを混合させて上記の点火手段２５により点火させ、この燃焼部２３から予熱帯１２に向けて燃焼させるようにする。   When combustion is performed by the regenerative burner 20, as shown in FIG. 3, combustion air that is not heated through the regenerator 21 that is not heat-accumulated as described above is introduced into the combustor 23. The fuel is ejected from the air supply nozzle 22 and the fuel is ejected from the first fuel supply nozzle 24. In the combustion section 23, the combustion air and the fuel are mixed and ignited by the ignition means 25. The combustion part 23 is burned toward the pretropical zone 12.

このように空気供給ノズル２２から噴出させた燃焼用空気と第１燃料供給ノズル２４から噴出させた燃料とを燃焼部２３内で混合させ、点火手段２５により点火させて燃焼させるようにすると、前記のように被加熱物１を予熱帯１２の前に設けられた装入扉１６を通して炉１０内に導入させる場合に、この予熱帯１２内の温度が低下して燃料の着火温度よりも低くなったとしても、安全かつ安定した燃焼が行えるようになる。   When the combustion air ejected from the air supply nozzle 22 and the fuel ejected from the first fuel supply nozzle 24 are mixed in the combustion unit 23 and ignited by the ignition means 25 to be burned, As described above, when the object to be heated 1 is introduced into the furnace 10 through the charging door 16 provided in front of the pre-tropical zone 12, the temperature in the pre-tropical zone 12 is lowered and becomes lower than the ignition temperature of the fuel. Even so, safe and stable combustion can be performed.

また、上記のように空気供給ノズル２２から噴出させた燃焼用空気と第１燃料供給ノズル２４から噴出させた燃料とを燃焼部２３内で混合させて燃焼させると、上記の燃料に充分な酸素が供給されて、発熱率の高い燃焼が行われるようになると共に、前記のように燃焼を行わない蓄熱式バーナー２０においては、予熱帯１２内における燃焼排ガスを、この蓄熱式バーナー２０を通して排気させないため、燃焼排ガスの熱が奪われることなく、上記の燃焼により予熱帯１２内の温度が速やかに上昇されるようになる。   Further, when the combustion air ejected from the air supply nozzle 22 and the fuel ejected from the first fuel supply nozzle 24 are mixed and burned in the combustion section 23 as described above, oxygen sufficient for the fuel is obtained. Is supplied, combustion with a high heat generation rate is performed, and in the regenerative burner 20 that does not perform combustion as described above, the combustion exhaust gas in the pre-tropical zone 12 is not exhausted through the regenerative burner 20 Therefore, the temperature in the pre-tropical zone 12 is quickly raised by the above combustion without taking heat of the combustion exhaust gas.

また、上記のように空気供給ノズル２２から噴出させた燃焼用空気と第１燃料供給ノズル２４から噴出させた燃料とを燃焼部２３内で混合させて燃焼させる蓄熱式バーナー２０の他に、このような燃焼を行わない蓄熱式バーナー２０を存在させると、予熱帯１２内における温度の上昇速度を適切に調整することができるようになる。さらに、上記の燃焼を行う蓄熱式バーナー２０と燃焼を行わない蓄熱式バーナー２０とを順々に切り換えるようにすると、上記のように予熱帯１２内における温度を上昇させている段階で、予熱帯１２内に温度分布の偏りが発生するのも防止できるようになる。   Further, in addition to the regenerative burner 20 that mixes the combustion air ejected from the air supply nozzle 22 and the fuel ejected from the first fuel supply nozzle 24 as described above in the combustion portion 23 and burns, When the regenerative burner 20 that does not perform such combustion is present, the temperature increase rate in the pre-tropical zone 12 can be appropriately adjusted. Furthermore, when the regenerative burner 20 that performs the combustion and the regenerative burner 20 that does not perform the combustion are sequentially switched, the temperature in the pretropical zone 12 is increased as described above. It is also possible to prevent the temperature distribution from being biased within 12.

また、上記のように空気供給ノズル２２から噴出させた燃焼用空気と第１燃料供給ノズル２４から噴出させた燃料とを燃焼部２３内で混合させて燃焼させるにあたり、加熱されていない燃焼用空気を噴出させるため、上記の燃焼による火炎の温度が高くなりすぎるのが抑制され、ＮＯｘの発生も防止されるようになる。   In addition, when the combustion air ejected from the air supply nozzle 22 and the fuel ejected from the first fuel supply nozzle 24 are mixed and burned in the combustion section 23 as described above, the combustion air that is not heated is used. As a result, the temperature of the flame due to the combustion is suppressed from becoming too high, and the generation of NOx is also prevented.

一方、この予熱帯１２内の温度が上記の所定温度を超えた場合には、燃焼を行わない蓄熱式バーナー２０において、図４に示すように、予熱帯１２内における燃焼排ガスをこの蓄熱式バーナー２０を通して排気させ、上記の蓄熱部２１に収容された蓄熱材２１ａに燃焼排ガスの熱を蓄熱させるようにする。   On the other hand, when the temperature in the pretropical zone 12 exceeds the predetermined temperature, in the regenerative burner 20 that does not perform combustion, as shown in FIG. The exhaust gas 20 is exhausted, and the heat storage material 21 a accommodated in the heat storage unit 21 stores the heat of the combustion exhaust gas.

そして、この蓄熱式バーナー２０により燃焼を行う場合には、図５に示すように、燃焼用空気を上記のように燃焼排ガスの熱が蓄熱材２１ａに蓄熱された蓄熱部２１に導いて加熱させ、このように加熱された燃焼用空気を上記の空気供給ノズル２２から燃焼部２３を通して予熱帯１２内に噴出させると共に、上記の第２燃料供給ノズル２６から予熱帯１２内に燃料を噴出させ、この燃料を予熱帯１２内における雰囲気ガス及び上記の加熱された燃焼用空気と混合させて、予熱帯１２内において燃焼させるようにする。   Then, when combustion is performed by the regenerative burner 20, as shown in FIG. 5, the combustion air is heated by guiding the heat of the combustion exhaust gas to the heat storage section 21 stored in the heat storage material 21a as described above. The combustion air heated in this way is ejected from the air supply nozzle 22 into the pretropical zone 12 through the combustion section 23, and fuel is ejected from the second fuel supply nozzle 26 into the pretropical region 12, This fuel is mixed with the atmospheric gas in the pretropical zone 12 and the above-mentioned heated combustion air so as to be burned in the pretropical zone 12.

ここで、上記のように燃焼排ガスの熱を蓄熱させた蓄熱部２１を通して燃焼用空気を加熱させ、このように加熱された燃焼用空気を予熱帯１２内に噴出させて燃焼させるようにすると、燃焼排ガスの熱を効率よく利用できるようになる。   Here, when the combustion air is heated through the heat storage unit 21 in which the heat of the combustion exhaust gas is stored as described above, and the combustion air thus heated is ejected into the pretropical zone 12 and burned, The heat of combustion exhaust gas can be used efficiently.

また、上記のように第２燃料供給ノズル２６から予熱帯１２内に燃料を噴出させ、この燃料を予熱帯１２内における雰囲気ガス及び加熱された燃焼用空気と混合させて燃焼させるようにした場合、酸素濃度の低い状態で燃焼されるようになり、この燃焼時におけるＮＯｘの発生が抑制されるようになる。   Also, when the fuel is ejected from the second fuel supply nozzle 26 into the pre-tropical zone 12 as described above, and this fuel is mixed with the atmospheric gas and the heated combustion air in the pre-tropical zone 12 and burned. Combustion is performed in a state where the oxygen concentration is low, and generation of NOx during the combustion is suppressed.

なお、この実施形態の連続加熱炉においては、被加熱物１が導入される導入側における予熱帯１２において、この予熱帯１２内における温度に基づいて、予熱帯１２に設けられた各蓄熱式バーナー２０の燃焼を制御させるようにしただけであるが、必要に応じて、この予熱帯１２の次に位置する第１加熱帯１３においても、この第１加熱帯１３内における温度に基づいて、この第１加熱帯１３に設けられた各蓄熱式バーナー２０を、上記の予熱帯１２における各蓄熱式バーナー２０と同様に制御させるようにし、さらに、上記の第２加熱帯１４や均熱帯１５においても同様に、この第２加熱帯１４や均熱帯１５に設けられた各蓄熱式バーナー２０を、上記の予熱帯１２における各蓄熱式バーナー２０と同様に制御させることができる。   In the continuous heating furnace of this embodiment, in the pre-tropical zone 12 on the introduction side where the object to be heated 1 is introduced, each regenerative burner provided in the pre-tropical region 12 based on the temperature in the pre-tropical region 12. However, if necessary, even in the first heating zone 13 located next to the pre-tropical zone 12, this combustion is controlled based on the temperature in the first heating zone 13. Each regenerative burner 20 provided in the first heating zone 13 is controlled in the same manner as each regenerative burner 20 in the pre-tropical zone 12, and also in the second heating zone 14 and the soaking zone 15. Similarly, each regenerative burner 20 provided in the second heating zone 14 or the soaking zone 15 can be controlled in the same manner as each regenerative burner 20 in the pre-tropical zone 12.

また、この実施形態に係る連続加熱炉においては、上記のように炉１０内を、予熱帯１２と第１加熱帯１３と第２加熱帯１４と均熱帯１５とからなる４つの燃焼ゾーン１２〜１５に区画させるようにしたが、このような燃焼ゾーンの数を変更させることも可能であり、この場合には、被加熱物１が導入される導入側における適当な範囲の燃焼ゾーンにおいて、これらの燃焼ゾーンに設けられた各蓄熱式バーナー２０を上記のように各燃焼ゾーン内における温度に基づいて制御させるようにする。   Moreover, in the continuous heating furnace which concerns on this embodiment, inside the furnace 10 as mentioned above, four combustion zones 12- consisting of the pretropical zone 12, the 1st heating zone 13, the 2nd heating zone 14, and the soaking zone 15- However, it is also possible to change the number of such combustion zones. In this case, in the combustion zone in an appropriate range on the introduction side where the article to be heated 1 is introduced, these can be changed. Each heat storage burner 20 provided in each combustion zone is controlled based on the temperature in each combustion zone as described above.

また、この実施形態に係る連続加熱炉においては、予熱帯１２と第１加熱帯１３と第２加熱帯１４と均熱帯１５とからなる４つの全ての燃焼ゾーン１２〜１５における燃焼装置２０として、前記のような蓄熱式バーナー２０を用いるようにしたが、前記のように燃焼ゾーン内における温度に基づいて制御させる必要のない燃焼ゾーンにおいては、前記の蓄熱式バーナー２０以外の燃焼装置を用いることも可能である。   Moreover, in the continuous heating furnace which concerns on this embodiment, as the combustion apparatus 20 in all the four combustion zones 12-15 which consist of the pretropical zone 12, the 1st heating zone 13, the 2nd heating zone 14, and the soaking zone 15, Although the heat storage burner 20 as described above is used, a combustion device other than the heat storage burner 20 is used in the combustion zone that does not need to be controlled based on the temperature in the combustion zone as described above. Is also possible.

この発明の一実施形態に係る連続加熱炉において、被加熱物を順々に加熱する状態を概略説明図である。In the continuous heating furnace which concerns on one Embodiment of this invention, the state which heats a to-be-heated material in order is schematic explanatory drawing. 上記の実施形態に係る連続加熱炉において、各燃焼ゾーンに設ける蓄熱式バーナーからなる燃焼装置の概略説明図である。In the continuous heating furnace which concerns on said embodiment, it is a schematic explanatory drawing of the combustion apparatus which consists of a thermal storage type burner provided in each combustion zone. 上記の実施形態に係る連続加熱炉において、予熱帯内の温度が所定温度以下になった場合に、予熱帯内に設けられた蓄熱式バーナーを燃焼させる状態を示した概略説明図である。In the continuous heating furnace which concerns on said embodiment, when the temperature in a pretropical zone becomes below predetermined temperature, it is the schematic explanatory drawing which showed the state which burns the thermal storage type burner provided in the pretropical zone. 上記の実施形態に係る連続加熱炉において、予熱帯内の温度が所定温度を超えた場合に、予熱帯内に設けられた蓄熱式バーナーを通して予熱帯内の燃焼排ガスの排気させる状態を示した概略説明図である。In the continuous heating furnace according to the above embodiment, when the temperature in the pretropical zone exceeds a predetermined temperature, the outline showing the state in which the combustion exhaust gas in the pretropical zone is exhausted through a regenerative burner provided in the pretropical zone It is explanatory drawing. 上記の実施形態に係る連続加熱炉において、予熱帯内の温度が所定温度を超えた場合に、予熱帯内に設けられた蓄熱式バーナーを燃焼させる状態を示した概略説明図である。In the continuous heating furnace which concerns on said embodiment, when the temperature in a pretropical zone exceeds predetermined temperature, it is the schematic explanatory drawing which showed the state which burns the thermal storage type burner provided in the pretropical zone.

符号の説明Explanation of symbols

１ 被加熱物
１０ 炉
１２ 予熱帯
１３ 第１加熱帯
１４ 第２加熱帯
１５ 均熱帯
１６ 装入扉
１７ 炉内スラブ搬送機構
１８ 抽出扉
２０ 蓄熱式バーナー（燃焼装置）
２１ 蓄熱部
２１ａ 蓄熱材
２２ 空気供給ノズル
２３ 燃焼部
２４ 第１燃料供給ノズル
２５ 点火手段
２６ 第２燃料供給ノズル DESCRIPTION OF SYMBOLS 1 Heated object 10 Furnace 12 Pre-tropical zone 13 1st heating zone 14 2nd heating zone 15 Soaking zone 16 Loading door 17 Furnace slab conveyance mechanism 18 Extraction door 20 Regenerative burner (combustion device)
DESCRIPTION OF SYMBOLS 21 Thermal storage part 21a Thermal storage material 22 Air supply nozzle 23 Combustion part 24 1st fuel supply nozzle 25 Ignition means 26 2nd fuel supply nozzle

Claims (5)

燃焼装置が複数設けられた複数の燃焼ゾーンに被加熱物を順々に導いて加熱する連続加熱炉において、少なくとも被加熱物を導入させる導入側の燃焼ゾーンにおける燃焼装置として、蓄熱部を有する蓄熱式バーナーであって、燃焼用空気を供給する空気供給ノズルの先端側における燃焼部に、燃料を供給する第１燃料供給ノズルと点火手段とが設けられると共に、この燃焼部の外周側に燃料を供給する第２燃料供給ノズルが設けられた蓄熱式バーナーを用い、蓄熱式バーナーを交互に燃焼させるにあたり、上記の燃焼ゾーン内の温度が所定温度以下の状態では、上記の蓄熱式バーナーを通した燃焼排ガスの排気を行わずに、上記の燃焼部内に、上記の空気供給ノズルから加熱されていない燃焼用空気を噴出させると共に、上記の第１燃料供給ノズルから燃料を噴出させ、上記の点火手段により点火させて燃焼させることを特徴とする燃焼装置。   In a continuous heating furnace that sequentially guides and heats an object to be heated to a plurality of combustion zones provided with a plurality of combustion devices, heat storage having a heat storage unit as a combustion device in at least an introduction-side combustion zone that introduces the object to be heated A combustion burner on the front end side of an air supply nozzle for supplying combustion air is provided with a first fuel supply nozzle for supplying fuel and ignition means, and fuel is supplied to the outer peripheral side of the combustion portion. When a regenerative burner provided with a second fuel supply nozzle to be supplied is used and the regenerative burner is alternately burned, when the temperature in the combustion zone is equal to or lower than a predetermined temperature, the regenerative burner is passed through. Without exhausting the combustion exhaust gas, the combustion air that is not heated is ejected from the air supply nozzle into the combustion section, and the first fuel supply is performed. The fuel is ejected from the nozzle, the combustion apparatus characterized by burning by ignition by the ignition means. 請求項１に記載した連続加熱炉において、上記の燃焼ゾーン内の温度が所定温度を超えた状態では、上記の蓄熱式バーナーを通して燃焼ゾーン内の燃焼排ガスの排気を行って蓄熱部に燃焼排ガスの熱を蓄熱させると共に、上記の蓄熱された蓄熱部において加熱された燃焼用空気を上記の空気供給ノズルから燃焼部を通して上記の燃焼ゾーン内に噴出させると共に、上記の第２燃料供給ノズルから燃料を噴出させて燃焼させることを特徴とする連続加熱炉。   In the continuous heating furnace according to claim 1, when the temperature in the combustion zone exceeds a predetermined temperature, the combustion exhaust gas in the combustion zone is exhausted through the heat storage burner and the combustion exhaust gas is discharged to the heat storage section. While accumulating heat, the combustion air heated in the heat storage part where the heat is stored is ejected from the air supply nozzle through the combustion part into the combustion zone, and fuel is supplied from the second fuel supply nozzle. A continuous heating furnace characterized by jetting and burning. 請求項１又は請求項２に記載した連続加熱炉において、上記の所定温度が上記の燃料の着火温度よりも高いことを特徴とする連続加熱炉。   The continuous heating furnace according to claim 1 or 2, wherein the predetermined temperature is higher than an ignition temperature of the fuel. 請求項１に記載した連続加熱炉において、上記の燃焼ゾーン内の温度が所定温度以下の状態では、上記の蓄熱式バーナーを通した燃焼排ガスの排気を行わずに、上記の燃焼部内に、上記の空気供給ノズルから加熱されていない燃焼用空気を噴出させると共に、上記の第１燃料供給ノズルから燃料を噴出させ、上記の点火手段により点火させて燃焼を行う蓄熱式バーナーの他に、上記の燃焼を行わない蓄熱式バーナーが存在することを特徴とする燃焼装置。   In the continuous heating furnace according to claim 1, in a state where the temperature in the combustion zone is equal to or lower than a predetermined temperature, the exhaust gas is not exhausted through the regenerative burner, and the combustion part is in the combustion section. In addition to the regenerative burner for injecting unheated combustion air from the air supply nozzle, injecting fuel from the first fuel supply nozzle and igniting by the ignition means to perform combustion, A combustion apparatus characterized in that a regenerative burner that does not perform combustion exists. 請求項４に記載した連続加熱炉において、上記の燃焼を行う蓄熱式バーナーと燃焼を行わない蓄熱式バーナーとを順々に切り換えることを特徴とする燃焼装置。   5. The combustion apparatus according to claim 4, wherein the regenerative burner that performs the combustion and the regenerative burner that does not perform the combustion are sequentially switched.
JP2007050893A 2007-03-01 2007-03-01 Continuous heating furnace Pending JP2008214670A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007050893A JP2008214670A (en) 2007-03-01 2007-03-01 Continuous heating furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007050893A JP2008214670A (en) 2007-03-01 2007-03-01 Continuous heating furnace

Publications (1)

Publication Number Publication Date
JP2008214670A true JP2008214670A (en) 2008-09-18

Family

ID=39835078

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007050893A Pending JP2008214670A (en) 2007-03-01 2007-03-01 Continuous heating furnace

Country Status (1)

Country Link
JP (1) JP2008214670A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102175042A (en) * 2011-01-04 2011-09-07 中冶南方(武汉)威仕工业炉有限公司 Method for oven furnace or cold furnace ignition of heat-accumulating-type heating furnace totally adopting blast-furnace gas as fuel
KR101304288B1 (en) * 2009-01-08 2013-09-11 주식회사 케너텍 A two staged fuel and air injecting regenerative burner to improve air fuel mixing
CN103827325A (en) * 2011-09-16 2014-05-28 本特勒尔汽车技术有限公司 Method for producing structural components and chassis components by hot forming, and heating station
JP2021067374A (en) * 2019-10-18 2021-04-30 Ｊｆｅスチール株式会社 Ignition method for sintering machine ignition furnace
CN118729273A (en) * 2024-07-19 2024-10-01 中铝环保节能科技(湖南)有限公司 Dispersed heat storage combustion industrial furnace and heating method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07120171A (en) * 1993-10-25 1995-05-12 Nkk Corp Method of operating a heating furnace equipped with a regenerative alternating combustion burner system
JPH08178267A (en) * 1994-12-21 1996-07-12 Kawasaki Steel Corp Combustion control method for regenerative combustion burner system
JPH08270915A (en) * 1995-04-04 1996-10-18 Chugai Ro Co Ltd Operation method of heat storage regenerative combustion system
JPH09222223A (en) * 1996-02-14 1997-08-26 Nkk Corp Combustion burner and its combustion method in furnace
JPH1030812A (en) * 1996-07-16 1998-02-03 Nkk Corp Heating furnace with regenerative burner and combustion control method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07120171A (en) * 1993-10-25 1995-05-12 Nkk Corp Method of operating a heating furnace equipped with a regenerative alternating combustion burner system
JPH08178267A (en) * 1994-12-21 1996-07-12 Kawasaki Steel Corp Combustion control method for regenerative combustion burner system
JPH08270915A (en) * 1995-04-04 1996-10-18 Chugai Ro Co Ltd Operation method of heat storage regenerative combustion system
JPH09222223A (en) * 1996-02-14 1997-08-26 Nkk Corp Combustion burner and its combustion method in furnace
JPH1030812A (en) * 1996-07-16 1998-02-03 Nkk Corp Heating furnace with regenerative burner and combustion control method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101304288B1 (en) * 2009-01-08 2013-09-11 주식회사 케너텍 A two staged fuel and air injecting regenerative burner to improve air fuel mixing
CN102175042A (en) * 2011-01-04 2011-09-07 中冶南方(武汉)威仕工业炉有限公司 Method for oven furnace or cold furnace ignition of heat-accumulating-type heating furnace totally adopting blast-furnace gas as fuel
CN103827325A (en) * 2011-09-16 2014-05-28 本特勒尔汽车技术有限公司 Method for producing structural components and chassis components by hot forming, and heating station
CN103827325B (en) * 2011-09-16 2016-01-20 本特勒尔汽车技术有限公司 Method and heating station for producing structural and chassis components by thermoforming
US9616488B2 (en) 2011-09-16 2017-04-11 Benteler Automobiltechnik Gmbh Method for producing structural components and chassis components by hot forming, and heating station
JP2021067374A (en) * 2019-10-18 2021-04-30 Ｊｆｅスチール株式会社 Ignition method for sintering machine ignition furnace
JP7070526B2 (en) 2019-10-18 2022-05-18 Ｊｆｅスチール株式会社 Sintering machine Ignition furnace ignition method
CN118729273A (en) * 2024-07-19 2024-10-01 中铝环保节能科技(湖南)有限公司 Dispersed heat storage combustion industrial furnace and heating method

Similar Documents

Publication Publication Date Title
US10288285B2 (en) Self-regenerating industrial burner and industrial furnace for carrying out self-regenerating combustion processes
JP2008214670A (en) Continuous heating furnace
JP6242453B1 (en) Heating furnace cooling system
TW201027013A (en) Method for controlling burning of heat accumulation burning type thermal processing furnace
JPH08208240A (en) Glass-melting oven
JP5171065B2 (en) Continuous heating furnace
CN108534140A (en) burner apparatus and heat treatment apparatus
JP2014145533A (en) Combustion device and combustion control method of combustion device
JPH0129847B2 (en)
JP5203421B2 (en) melting furnace
JP2019015439A (en) Heat-storing-type combustion facility
RU2013143022A (en) METHOD FOR HEATING A BURNER FURNACE AIR HEATER
JP2004077007A (en) Continuous heating furnace and its operation method
JP2012181003A (en) Boiler device and high temperature air combustion system
JP3912061B2 (en) Regenerative burner and combustion method thereof
JP2006308249A (en) Regenerative burner and its low NOx combustion method
JP2014048020A (en) Continuous type heating furnace
KR19990036108A (en) Heating method and apparatus
RU2265774C1 (en) Method and device for treating solid waste
JP2004163070A (en) Combustion equipment for exhaust gas generated inside gasification melting furnace and combustion method
JP2776431B2 (en) Floating combustion method in low nitrogen oxide generating furnace
TWI876968B (en) Regenerative hydrogen combustion equipment
KR101471636B1 (en) Pellet Combustion Device and Method for Low-Emission
KR101407320B1 (en) Partially premixed fuel preheating regenerative oxyfuel combustion burner system and combustion method
JP4884023B2 (en) Cremation equipment

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20091110

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20120403