JP5167015B2

JP5167015B2 - Regenerative burner combustion control method

Info

Publication number: JP5167015B2
Application number: JP2008195819A
Authority: JP
Inventors: 裕明谷
Original assignee: Sanken Sangyo Co Ltd
Current assignee: Sanken Sangyo Co Ltd
Priority date: 2008-07-30
Filing date: 2008-07-30
Publication date: 2013-03-21
Anticipated expiration: 2028-07-30
Also published as: JP2010032141A

Description

本発明は、金属または非鉄金属の加熱炉や熱処理炉等の炉に備え付けられるリジェネバーナの燃焼を制御する方法に関するものである。 The present invention relates to a method for controlling the combustion of a regenerative burner provided in a furnace such as a metal or non-ferrous metal heating furnace or heat treatment furnace.

金属や非鉄金属用の多くの加熱炉や熱処理炉等には、リジェネバーナが備え付けられている。このリジェネバーナは、対向して設けられた一対のバーナを交互に燃焼させ、一方のバーナの燃焼で発生した高温の廃熱（排気熱）を、他方のバーナの蓄熱器で蓄え、その廃熱を他方のバーナを燃焼させる際に利用するもので、熱効率が高く、省エネルギーに貢献するといった利点を持つ。 Regenerative burners are provided in many heating furnaces and heat treatment furnaces for metals and non-ferrous metals. This regenerative burner alternately burns a pair of opposed burners and stores the high-temperature waste heat (exhaust heat) generated by the combustion of one burner in the regenerator of the other burner. Is used when the other burner is burned, and has the advantages of high thermal efficiency and contributing to energy saving.

こうしたリジェネバーナの燃焼を制御する方法としては、いわゆる、「オン・オフ時間比例連続制御」（例えば、特許文献１参照）や「連続切り替え燃焼によるカスケード制御」がある。
特開２００４−２７１１３０号公報 As a method for controlling the combustion of the regenerative burner, there are so-called “on / off time proportional continuous control” (for example, refer to Patent Document 1) and “cascade control by continuous switching combustion”.
JP 2004-271130 A

しかしながら、オン・オフ時間比例連続制御は、バーナの着火本数が増加および減少するタイミングが頻繁であり、切り替え時の炉圧や炉内酸素量のハンチングが発生し、燃焼が安定しないといった問題がある。 However, the on / off time proportional continuous control has a problem that the number of burner ignitions increases and decreases frequently, hunting of the furnace pressure and the oxygen amount in the furnace occurs, and combustion is not stable. .

これに対し、カスケード制御は、上記の問題が発生しない点では優れている。
しかし、バーナを連続燃焼させるには炉内を所定温度に保つために、各バーナの燃焼量をターンダウン（減少あるいは下降）させる必要があるが、このターンダウンによって各バーナの燃焼量が１／４（２５％）未満まで低下すると、バーナ特性や配管特性により、燃焼状態が不安定となる。これにより、酸素量が増えると共に、未燃ガスも増加し、効率的な燃焼が行われないといった深刻な問題が発生する。 On the other hand, the cascade control is excellent in that the above problem does not occur.
However, in order to continuously burn the burner, it is necessary to turn down (decrease or lower) the burn amount of each burner in order to keep the inside of the furnace at a predetermined temperature. If it falls below 4 (25%), the combustion state becomes unstable due to burner characteristics and piping characteristics. As a result, the amount of oxygen increases and unburned gas also increases, causing a serious problem that efficient combustion is not performed.

そこで、本発明の目的とするところは、リジェネバーナの燃焼を効率的に行うことのできる制御方法を提供することにある。 Accordingly, an object of the present invention is to provide a control method capable of efficiently performing combustion of a regenerative burner.

上記の目的を達成するために、本発明の請求項１に記載のリジェネバーナ燃焼制御方法は、一対のバーナ（１−１，１−２；２−１，２−２）を交互に燃焼させ、一方のバーナ（１−１，２−１）の燃焼によって得た廃熱を他方のバーナ（１−２，２−２）の蓄熱器で蓄え、その廃熱を他方のバーナ（１−２，２−２）を燃焼させる際に使用するリジェネバーナ（１，２）が、二組備え付けられた金属または非鉄金属の加熱炉や熱処理炉等の炉（Ｆ）において、前記二組のリジェネバーナ（１，２）の燃焼を制御する方法であって、
前記各バーナ（１−１，１−２，２−１，２−２）が連続で着火する連続着火時間は全て等しく、各リジェネバーナ（１，２）の燃焼開始のタイミングを互いに前記連続着火時間の１／２ずつずらして、同時に二組のリジェネバーナ（１，２）を燃焼させて炉内を所定温度以上に加熱した後、炉内を所定温度に保つために、同時に二組のリジェネバーナ（１，２）を燃焼させながら、各組のリジェネバーナ（１，２）の燃焼量をそれぞれ一律に徐々に減少させるターンダウンを行い、
前記各組のリジェネバーナ（１，２）の燃焼量が２５％になると、各組のリジェネバーナ（１，２）の燃焼量をそれぞれ５０％まで上昇させるとともに、前記各バーナ（１−１，１−２，２−１，２−２）が連続して着火する時間を前記連続着火時間の１／２にすることで同時に複数本の前記バーナ（１−１，１−２，２−１，２−２）が燃焼しないようにして、炉内を所定温度に保つために、各組のリジェネバーナ（１，２）の燃焼量を２５％になるまでターンダウンさせ、
しかも前記蓄熱器で廃熱を蓄えてからその蓄熱器を有する前記バーナ（１−１，１−２，２−１，２−２）の次の燃焼開始までの時間を前記各バーナ（１−１，１−２，２−１，２−２）について等しくしたことを特徴とする。 In order to achieve the above object, a regeneration burner combustion control method according to claim 1 of the present invention burns a pair of burners (1-1, 1-2; 2-1, 2-2) alternately. The waste heat obtained by the combustion of one burner (1-1, 2-1) is stored in the regenerator of the other burner (1-2 , 2-2) , and the waste heat is stored in the other burner (1-2 , 2-2) is used for burning the regenerative burners (1, 2) in two furnaces (F) such as a metal or non-ferrous metal heating furnace or heat treatment furnace. A method for controlling the combustion of (1, 2) ,
The continuous ignition times at which the burners (1-1, 1-2, 2-1, 2-2) are continuously ignited are all equal, and the combustion start timings of the regenerative burners (1, 2) are mutually connected. In order to keep the inside of the furnace at a predetermined temperature after two sets of regenerative burners (1, 2) are burned at the same time by shifting by half of the time, while burning the burner (1,2), the turn-down is gradually decreased combustion amount of each set of regenerative burners (1, 2) to uniformly respectively,
When the combustion amount of each of the regenerative burners (1, 2) reaches 25%, the combustion amount of each of the regenerative burners (1, 2) is increased to 50%, and each of the burners (1-1, 1) is increased . The time at which 1-2, 2-1 and 2-2) are continuously ignited is ½ of the continuous ignition time, so that a plurality of burners (1-1, 1-2, 2-1 at the same time) , 2-2) does not burn, and in order to keep the inside of the furnace at a predetermined temperature, the combustion amount of each set of regenerative burners (1, 2) is turned down to 25% ,
In addition, the time from the accumulation of waste heat in the heat accumulator to the start of the next combustion of the burner (1-1, 1-2, 2-1, 2-2) having the heat accumulator is set to each burner (1- 1, 1-2, 2-1 and 2-2) .

また、請求項２に記載のリジェネバーナ燃焼制御方法は、一対のバーナ（１−１，１−２；２−１，２−２；３−１，３−２）を交互に燃焼させ、一方のバーナ（１−１，２−１，３−１）の燃焼によって得た廃熱を他方のバーナ（１−２，２−２，３−２）の蓄熱器で蓄え、その廃熱を他方のバーナ（１−２，２−２，３−２）を燃焼させる際に使用するリジェネバーナ（１，２，３）が、三組備え付けられた金属または非鉄金属の加熱炉や熱処理炉等の炉（Ｆ）において、前記三組のリジェネバーナ（１，２，３）の燃焼を制御する方法であって、
前記各バーナ（１−１，１−２，２−１，２−２，３−１，３−２）が連続で着火する連続着火時間は全て等しく、各リジェネバーナ（１，２，３）の燃焼開始のタイミングを互いに前記連続着火時間の１／３ずつずらして、同時に三組のリジェネバーナ（１，２，３）を燃焼させて炉内を所定温度以上に加熱した後、炉内を所定温度に保つために、同時に三組のリジェネバーナ（１，２，３）を燃焼させながら、各組のリジェネバーナ（１，２，３）の燃焼量をそれぞれ一律に徐々に減少させるターンダウンを行い、
前記各組のリジェネバーナ（１，２，３）の燃焼量が２５％になると、各組のリジェネバーナの燃焼量（１，２，３）をそれぞれ３７．５％まで上昇させるとともに、前記各バーナ（１−１，１−２，２−１，２−２，３−１，３−２）が連続して着火する時間を前記連続着火時間の２／３にすることで同時に二本のバーナ（１−１，１−２，２−１，２−２，３−１，３−２）のみが燃焼するようにして、炉内を所定温度に保つために、各組のリジェネバーナ（１，２，３）の燃焼量を２５％になるまでターンダウンさせ、
前記各組のリジェネバーナ（１，２，３）の燃焼量が２５％になると、各組のリジェネバーナ（１，２，３）の燃焼量をそれぞれ５０％まで上昇させるとともに、前記各バーナ（１−１，１−２，２−１，２−２，３−１，３−２）が連続して着火する時間を前記連続着火時間の１／３にすることで同時に複数本のバーナ（１−１，１−２，２−１，２−２，３−１，３−２）が燃焼しないようにして、炉内を所定温度に保つために、各組のリジェネバーナ（１，２，３）の燃焼量を２５％になるまでターンダウンさせ、
しかも前記蓄熱器で廃熱を蓄えてからその蓄熱器を有する前記バーナ（１−１，１−２，２−１，２−２，３−１，３−２）の次の燃焼開始までの時間を前記各バーナ（１−１，１−２，２−１，２−２，３−１，３−２）について等しくしたことを特徴とする。 Moreover, the regeneration burner combustion control method according to claim 2 alternately burns a pair of burners (1-1, 1-2; 2-1, 2-2; 3-1, 3-2) , The waste heat obtained by the combustion of the burner (1-1, 2-1, 3-1) is stored in the regenerator of the other burner (1-2, 2-2, 3-2) , and the waste heat is stored in the other The regenerative burner (1, 2, 3) used when burning the burner (1-2, 2-2, 3-2) is provided with three sets of metal or non-ferrous metal heating furnace, heat treatment furnace, etc. In the furnace (F) , a method for controlling combustion of the three sets of regenerative burners (1, 2, 3) ,
The continuous ignition times at which the burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2) are continuously ignited are all equal, and the regenerative burners (1, 2, 3) The combustion start timing is shifted by 1/3 of the continuous ignition time, and three sets of regenerative burners (1, 2, 3) are simultaneously burned to heat the furnace to a predetermined temperature or higher. in order to keep a predetermined temperature, turndown for simultaneously while burning the three sets of regenerative burners (1,2,3), it is gradually reduced combustion amount of each set of regenerative burners (1, 2, 3) to uniformly each And
When the combustion amount of each set of regenerative burners (1, 2, 3) reaches 25%, the combustion amount (1, 2, 3) of each set of regenerative burners is increased to 37.5%, respectively. By setting the time for the burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2) to ignite continuously to 2/3 of the continuous ignition time, In order to keep only the burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2) to burn and to keep the inside of the furnace at a predetermined temperature, each set of regenerative burners ( 1. Turn down the combustion amount of 1, 2, 3) to 25%
When the combustion amount of each set of regenerative burners (1, 2, 3) reaches 25%, the combustion amount of each set of regenerative burners (1, 2, 3) is increased to 50%, and each burner ( 1-1, 1-2, 2-1, 2-2, 3-1, 3-2) are set to 1/3 of the continuous ignition time, so that a plurality of burners ( 1-1,1-2,2-1,2-2,3-1,3-2) so as not to burn, to keep the inside of the furnace to a predetermined temperature, each pair of regenerative burners (1, 2 , 3) Turn down the combustion amount to 25% ,
Moreover, after the waste heat is stored in the heat accumulator, the burner (1-1, 1-2, 2-1, 2-2, 3-1, 3-2) having the heat accumulator is started until the next combustion starts. The time is the same for each of the burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2) .

さらに、請求項３に記載のリジェネバーナ燃焼制御方法は、一対のバーナ（１−１，１−２；２−１，２−２；３−１，３−２；４−１，４−２）を交互に燃焼させ、一方のバーナ（１−１，２−１，３−１，４−１）の燃焼によって得た廃熱を他方のバーナ（１−２，２−２，３−２，４−２）の蓄熱器で蓄え、その廃熱を他方のバーナ（１−２，２−２，３−２，４−２）を燃焼させる際に使用するリジェネバーナ（１，２，３，４）が、四組備え付けられた金属または非鉄金属の加熱炉や熱処理炉等の炉（Ｆ）において、前記四組のリジェネバーナ（１，２，３，４）の燃焼を制御する方法であって、
前記各バーナ（１−１，１−２，２−１，２−２，３−１，３−２，４−１，４−２）が連続で着火する連続着火時間は全て等しく、各リジェネバーナ（１，２，３，４）の燃焼開始のタイミングを互いに前記連続着火時間の１／４ずつずらして、同時に四組のリジェネバーナ（１，２，３，４）を燃焼させて炉内を所定温度以上に加熱した後、炉内を所定温度に保つために、同時に四組のリジェネバーナ（１，２，３，４）を燃焼させながら、各組のリジェネバーナ（１，２，３，４）の燃焼量をそれぞれ一律に徐々に減少させるターンダウンを行い、
前記各組のリジェネバーナ（１，２，３，４）の燃焼量が２５％になると、各組のリジェネバーナ（１，２，３，４）の燃焼量をそれぞれ３３．３３％まで上昇させるとともに、前記各バーナ（１−１，１−２，２−１，２−２，３−１，３−２，４−１，４−２）が連続で着火する時間を前記連続着火時間の３／４にすることで同時に三本のバーナ（１−１，１−２，２−１，２−２，３−１，３−２，４−１，４−２）のみが燃焼するようにして、炉内を所定温度に保つために、各組のリジェネバーナの燃焼量を２５％になるまでターンダウンさせ、
前記各組のリジェネバーナ（１，２，３，４）の燃焼量が２５％になると、各組のリジェネバーナ（１，２，３，４）の燃焼量をそれぞれ３７．５％まで上昇させるとともに、前記各バーナ（１−１，１−２，２−１，２−２，３−１，３−２，４−１，４−２）が連続で着火する時間を前記連続着火時間の２／４にすることで同時に二本のバーナ（１−１，１−２，２−１，２−２，３−１，３−２，４−１，４−２）のみが燃焼するようにして、炉内を所定温度に保つために、各組のリジェネバーナ（１，２，３，４）の燃焼量を２５％になるまでターンダウンさせ、
前記各組のリジェネバーナ（１，２，３，４）の燃焼量が２５％になると、各組のリジェネバーナ（１，２，３，４）の燃焼量をそれぞれ５０％まで上昇させるとともに、前記各バーナ（１−１，１−２，２−１，２−２，３−１，３−２，４−１，４−２）が連続で着火する時間を前記連続着火時間の１／４にすることで同時に複数本のバーナ（１−１，１−２，２−１，２−２，３−１，３−２，４−１，４−２）が燃焼しないようにして、炉内を所定温度に保つために、各組のリジェネバーナ（１，２，３，４）の燃焼量を２５％になるまでターンダウンさせ、
しかも前記蓄熱器で廃熱を蓄えてからその蓄熱器を有する前記バーナ（１−１，１−２，２−１，２−２，３−１，３−２，４−１，４−２）の次の燃焼開始までの時間を前記各バーナ（１−１，１−２，２−１，２−２，３−１，３−２，４−１，４−２）について等しくしたことを特徴とする。 Furthermore, the regeneration burner combustion control method according to claim 3 includes a pair of burners (1-1, 1-2; 2-1, 2-2; 3-1, 3-2; 4-1, 4-2). ) Are alternately burned, and the waste heat obtained by the combustion of one burner (1-1, 2-1, 3-1, 4-1) is converted to the other burner (1-2, 2-2, 3-2). , 4-2) , and the regenerative burner (1, 2, 3 ) used when the other burner (1-2 , 2-2, 3-2, 4-2) is burned. , 4), in a method of controlling the combustion of the furnace, such as a heating furnace or a heat treatment furnace of the four sets equipped are metal or non-ferrous metals (F), the four sets of regenerative burners (1, 2, 3, 4) There,
Each of the burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2, 4-1, 4-2) is continuously ignited in the same period of time. The combustion start timing of the burners (1, 2, 3, 4) is shifted from each other by ¼ of the continuous ignition time, and at the same time, four sets of regenerative burners (1, 2, 3, 4) are burned. after heating the predetermined temperature or higher, in order to keep the inside of the furnace to a predetermined temperature, while burning the four sets of regenerative burners (1, 2, 3, 4) simultaneously, each pair of regenerative burners (1, 2, 3 , 4) Turn down to gradually reduce the amount of combustion uniformly,
When the combustion amount of each regenerative burner (1, 2, 3, 4) reaches 25%, the combustion amount of each regenerative burner (1, 2, 3, 4) is increased to 33.33%. In addition, the time for which each of the burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2, 4-1, 4-2) is continuously ignited is equal to the continuous ignition time. By making it 3/4, only three burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2, 4-1, 4-2) are burned at the same time. In order to keep the inside of the furnace at a predetermined temperature, the combustion amount of each set of regenerative burners is turned down to 25%,
When the combustion amount of each regenerative burner (1, 2, 3, 4) reaches 25%, the combustion amount of each regenerative burner (1, 2, 3, 4) is increased to 37.5%. In addition, the time for which each of the burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2, 4-1, 4-2) is continuously ignited is equal to the continuous ignition time. By making it 2/4, only two burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2, 4-1, 4-2) will burn at the same time. In order to keep the inside of the furnace at a predetermined temperature, the combustion amount of each set of regenerative burners (1, 2, 3, 4) is turned down to 25%,
When the combustion amount of each set of regenerative burners (1, 2, 3, 4) reaches 25%, the combustion amount of each set of regenerative burners (1, 2, 3, 4) is increased to 50%, The time for which each of the burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2, 4-1, 4-2) is continuously ignited is 1 / of the continuous ignition time. 4 to prevent a plurality of burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2, 4-1, 4-2) from burning simultaneously, In order to keep the inside of the furnace at a predetermined temperature, the combustion amount of each set of regenerative burners (1, 2, 3, 4) is turned down to 25% ,
In addition, after the waste heat is stored in the heat accumulator, the burner (1-1, 1-2, 2-1, 2-2, 3-1, 3-2, 4-1, 4-2) having the heat accumulator is stored. ) The time until the start of the next combustion is equalized for each of the burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2, 4-1, 4-2). It is characterized by.

また、請求項４に記載のリジェネバーナ燃焼制御方法は、前記一組のリジェネバーナ（１，２，３，４）のみを交互に燃焼させたとき、ターンダウンにより各組のリジェネバーナ（１，２，３，４）の燃焼量が２５％になると、各組のリジェネバーナ（１，２，３，４）の燃焼を停止することを特徴とする。 Further, in the regenerative burner combustion control method according to claim 4 , when only one set of regenerative burners (1, 2, 3, 4) is alternately burned, each set of regenerative burners (1, 2, 3) is turned down . When the amount of combustion in 2, 3, 4) reaches 25%, the combustion of each set of regenerative burners (1, 2, 3, 4) is stopped.

本発明の請求項１に記載のリジェネバーナ燃焼制御方法によれば、二組のリジェネバーナの燃焼を制御する場合において、各組のリジェネバーナを、常に、２５％以上の燃焼量で燃焼させるので、燃焼状態を安定させることができる。
これにより、炉内の酸素量と未燃ガスの増加を防止し、効率的な燃焼を行わせることができる。 According to the regenerative burner combustion control method according to claim 1 of the present invention, when controlling the combustion of two sets of regenerative burners, each set of regenerative burners is always burned at a combustion amount of 25% or more. The combustion state can be stabilized.
Thereby, the amount of oxygen in the furnace and the increase of unburned gas can be prevented, and efficient combustion can be performed.

なお、同時に一組のリジェネバーナのみを交互に燃焼させる際に、各組のリジェネバーナの燃焼を２５％から５０％に上昇させるので、同時に二組のリジェネバーナを２５％の燃焼量で燃焼させていた際と同一の燃焼量を保つことができる（２５％×２組＝５０％×１組）。
これにより、炉内の温度が急激に低下して所定温度を下回ってしまうといった事態を防止することができる。 In addition, when only one set of regenerative burners is alternately burned at the same time, the combustion of each set of regenerative burners is increased from 25% to 50%, so that two sets of regenerative burners are simultaneously burned with a combustion amount of 25%. It is possible to maintain the same amount of combustion as when it was (25% × 2 sets = 50% × 1 set).
Thereby, the situation where the temperature in a furnace falls rapidly and falls below predetermined temperature can be prevented.

また、請求項２に記載のリジェネバーナ燃焼制御方法によれば、三組のリジェネバーナの燃焼を制御する場合において、各組のリジェネバーナを、常に、２５％以上の燃焼量で燃焼させるので、燃焼状態を安定させることができる。これにより、炉内の酸素量と未燃ガスの増加を防止し、効率的な燃焼を行わせることができる。
なお、同時に二組のリジェネバーナを順次、燃焼させる際に、各組のリジェネバーナの燃焼量を２５％から３７．５％に上昇させるので、同時に三組のリジェネバーナを２５％の燃焼量で燃焼させていた際と同一の燃焼量を確保することができる（２５％×３組＝３７．５％×２組）。従って、炉内の温度が急激に低下するのを防止することができる。
また、同時に一組のリジェネバーナを順次、燃焼させる際に、各組のリジェネバーナの燃焼量を２５％から５０％に上昇させるので、同時に二組のリジェネバーナを２５％の燃焼量で燃焼させたいた際の同一の燃焼量を確保することができる（２５％×２組＝５０％×１組）。これにより、炉内の温度が所定温度以下まで急激に低下してしまうといった事態を未然に防止することができる。 Further, according to the regenerative burner combustion control method according to claim 2, in the case of controlling the combustion of the three sets of regenerative burners, each set of regenerative burners is always burned at a combustion amount of 25% or more. The combustion state can be stabilized. Thereby, the amount of oxygen in the furnace and the increase of unburned gas can be prevented, and efficient combustion can be performed.
In addition, when two sets of regenerative burners are burned sequentially at the same time, the combustion amount of each set of regenerative burners is increased from 25% to 37.5%, so that three sets of regenerative burners are simultaneously burned at 25%. It is possible to ensure the same amount of combustion as when burning (25% × 3 pairs = 37.5% × 2 pairs). Accordingly, it is possible to prevent the temperature in the furnace from rapidly decreasing.
In addition, when one set of regenerative burners is burned sequentially, the combustion amount of each set of regenerative burners is increased from 25% to 50%, so that two sets of regenerative burners are burned simultaneously with a combustion amount of 25%. It is possible to ensure the same amount of combustion when tapping (25% × 2 sets = 50% × 1 set). Thereby, the situation where the temperature in a furnace falls rapidly to below predetermined temperature can be prevented beforehand.

また、請求項３に記載のリジェネバーナ燃焼制御方法によれば、四組のリジェネバーナの燃焼を制御する場合において、各組のリジェネバーナを、常に、２５％以上の燃焼量で燃焼させるので、燃焼状態を安定させることができる。これにより、炉内の酸素量と未燃ガスの増加を防止し、効率的な燃焼を行わせることができる。
なお、同時に三組のリジェネバーナを順次、燃焼させる際に、各組のリジェネバーナの燃焼量を２５％から３３．３３％に上昇させるので、同時に四組のリジェネバーナを２５％の燃焼量で燃焼させていた際と同一の燃焼量を確保することができる（２５％×４組＝３３．３３％×３組）。これにより、炉内の温度が急激に低下するのを防止することができる。
また、同時に二組のリジェネバーナを燃焼させる際に、各組のリジェネバーナの燃焼量を２５％から３７．５％に上昇させるので、同時に三組のリジェネバーナを２５％の燃焼量で燃焼させていた際と同一の燃焼量を確保することができ（２５％×３組＝３７．５％×２組）、同様に、炉内の温度の急激な低下を防止することができる。
さらに、同時に一組のリジェネバーナを順次、燃焼させる際に、各組のリジェネバーナの燃焼量を２５％から５０％に上昇させるので、同時に二組のリジェネバーナを２５％の燃焼量で燃焼させたいた際の同一の燃焼量を確保することができ（２５％×２組＝５０％×１組）、炉内の温度が所定温度以下まで急激に低下してしまうといった事態を未然に防止することができる。 According to the regenerative burner combustion control method according to claim 3, when controlling the combustion of the four sets of regenerative burners, each set of regenerative burners is always burned at a combustion amount of 25% or more. The combustion state can be stabilized. Thereby, the amount of oxygen in the furnace and the increase of unburned gas can be prevented, and efficient combustion can be performed.
In addition, when three sets of regenerative burners are sequentially burned at the same time, the combustion amount of each set of regenerative burners is increased from 25% to 33.33%, so that four sets of regenerative burners are simultaneously burned at 25%. It is possible to ensure the same amount of combustion as when burning (25% × 4 groups = 33.33% × 3 groups). Thereby, it can prevent that the temperature in a furnace falls rapidly.
In addition, when two sets of regenerative burners are burned simultaneously, the combustion amount of each set of regenerative burners is increased from 25% to 37.5%, so that three sets of regenerative burners are burned simultaneously with a combustion amount of 25%. It is possible to ensure the same amount of combustion as when it was (25% × 3 sets = 37.5% × 2 sets), and similarly, it is possible to prevent a rapid decrease in the temperature in the furnace.
Furthermore, when one set of regenerative burners is burned sequentially, the combustion amount of each set of regenerative burners is increased from 25% to 50%, so that two sets of regenerative burners are burned simultaneously with a combustion amount of 25%. It is possible to ensure the same amount of combustion when hitting (25% × 2 groups = 50% × 1 group), and to prevent a situation in which the temperature in the furnace suddenly drops below a predetermined temperature. be able to.

また請求項４に記載のリジェネバーナ燃焼制御方法によれば、一組のリジェネバーナのみを交互に燃焼させたとき、ターンダウンにより各組のリジェネバーナの燃焼量が２５％になると、各組のリジェネバーナの燃焼を停止するので、炉内の酸素量と未燃ガスの増加を確実に防止することができる。 According to the regenerative burner combustion control method according to claim 4 , when only one set of regenerative burner is alternately burned, if the combustion amount of each set of regenerative burner becomes 25% by turndown, Since combustion of the regenerative burner is stopped, an increase in the amount of oxygen and unburned gas in the furnace can be reliably prevented.

（第一実施形態）
図１乃至図３を参照して、本発明の第一実施形態に係るリジェネバーナ燃焼制御方法について説明する。
図１は、二組のリジェネバーナ（１組バーナ１と２組バーナ２）を備えた、金属用（または非鉄金属用）の加熱炉等の炉Ｆを示す概略平面断面図である。図２は、リジェネバーナの燃焼量を示すグラフであり、図３は、同時に燃焼させるリジェネバーナの数（組）を示す表である。 (First embodiment)
With reference to FIG. 1 thru | or FIG. 3, the regeneration burner combustion control method which concerns on 1st embodiment of this invention is demonstrated.
FIG. 1 is a schematic plan sectional view showing a furnace F such as a metal (or non-ferrous metal) heating furnace provided with two sets of regenerative burners (one set burner 1 and two sets burner 2). FIG. 2 is a graph showing the combustion amount of the regenerative burner, and FIG. 3 is a table showing the number (set) of regenerative burners to be burned simultaneously.

１組バーナ１は、対向する一対の第一バーナ１−１と第二バーナ１−２で構成され、２組バーナ２も、同様に、第一バーナ２−１と第二バーナ２−２で構成される。なお、図１において、符号Ｃは制御装置（ＣＰＵ）を示し、符号Ｖはバルブを示す。
リジェネバーナは、１組バーナ１において、一対のバーナ１−１，１−２を交互に燃焼させ、一方のバーナ１−１の燃焼によって得た廃熱を他方のバーナ１−２の蓄熱器で蓄え、その廃熱を他方のバーナ１−２を燃焼させる際に使用し、また、２組バーナ２において、一対のバーナ２−１，２−２を交互に燃焼させ、一方のバーナ２−１の燃焼によって得た廃熱を他方のバーナ２−２の蓄熱器で蓄え、その廃熱を他方のバーナ２−２を燃焼させる際に使用する。 1 set burner 1 is comprised by a pair of 1st burner 1-1 and 2nd burner 1-2 which oppose, and 2 set burner 2 is similarly 1st burner 2-1 and 2nd burner 2-2. Composed. In FIG. 1, symbol C indicates a control device (CPU), and symbol V indicates a valve.
A regenerative burner burns a pair of burners 1-1 and 1-2 alternately in one set of burners 1, and uses the heat accumulated in one burner 1-1 as a heat accumulator of the other burner 1-2. The waste heat is stored and used when the other burner 1-2 is burned. In the two burners 2, the pair of burners 2-1 and 2-2 are alternately burned, and the one burner 2-1 is burned. The waste heat obtained by burning is stored in the regenerator of the other burner 2-2, and the waste heat is used when the other burner 2-2 is burned.

本実施形態に係るリジェネバーナ燃焼制御方法は、二組のリジェネバーナ（１組バーナ１と２組バーナ２）を設けた場合におけるものであり、炉内を所定温度（例えば、１２００℃）に保つために、まず、同時に、二組のバーナを燃焼させて、炉内を所定温度以上に加熱する。
次に、炉内を所定温度（例えば、１２００℃）に保つため、同時に二組のリジェネバーナを燃焼させながら、各組のバーナの燃焼量をそれぞれ一律に徐々に減少させるといったいわゆるターンダウンを行う。 The regenerative burner combustion control method according to the present embodiment is a case where two sets of regenerative burners (one set burner 1 and two sets burner 2) are provided, and the inside of the furnace is maintained at a predetermined temperature (for example, 1200 ° C.). For this purpose, first, two sets of burners are burned simultaneously, and the inside of the furnace is heated to a predetermined temperature or higher.
Next, in order to keep the inside of the furnace at a predetermined temperature (eg, 1200 ° C.), so-called turn-down is performed in which the combustion amount of each set of burners is gradually reduced while simultaneously burning two sets of regeneration burners. .

また、このときに同時に燃焼させるバーナの数（組）を、図３の上段に示す。本実施形態では、１組バーナ１の第一バーナ１−１と第二バーナ１−２を、交互に６０秒ずつ燃焼させると共に、２組バーナ２の第一バーナ２−１と第二バーナ２−２も交互に６０秒ずつ燃焼させ、各組のバーナの燃焼開始タイミングを３０秒ずらしている。これにより、同時に、１組バーナ１と２組バーナ２が、途切れることなく連続的に燃焼するように設定している。 In addition, the number (set) of burners burned simultaneously at this time is shown in the upper part of FIG. In the present embodiment, the first burner 1-1 and the second burner 1-2 of the first set burner 1 are alternately burned every 60 seconds, and the first burner 2-1 and the second burner 2 of the second set burner 2 are burned. -2 is also alternately burned for 60 seconds, and the combustion start timing of each set of burners is shifted by 30 seconds. Thus, at the same time, the first set burner 1 and the second set burner 2 are set to continuously burn without interruption.

その後、各組のリジェネバーナの燃焼量が２５％になると、各組のリジェネバーナの燃焼量をそれぞれ一気に５０％まで上昇させるとともに、一組のリジェネバーナのみを交互に、すなわち、１組バーナ１および２組バーナ２をそれぞれ交互に燃焼させる。 Thereafter, when the combustion amount of each set of regenerative burners reaches 25%, the combustion amount of each set of regenerative burners is increased to 50% at a stretch, and only one set of regenerative burners is alternated, that is, one set of burners 1 And two sets of burners 2 are burned alternately.

このときの燃焼量を、図２に、「２５％２本バーナの１／４」として示す。ここで、「２５％」は、同時に燃焼させる二組のバーナの燃焼量が、最大燃焼量（１００％×２組＝２００％）の２５％であることを示す。従って、１組バーナ１と２組バーナ２の燃焼量は、それぞれ２５％である（２５％×２÷２００％）。
なお、「２本バーナの１／４」とは、二組のバーナを同時に燃焼させ、各組のバーナの燃焼量がそれぞれ２５％（１／４）であることを意味する（すなわち、二組のバーナの燃焼量（５０％）が、最大燃焼量（２００％）の１／４であることを意味する）。 The amount of combustion at this time is shown in FIG. 2 as “25% 1/4 of two burners”. Here, “25%” indicates that the combustion amount of the two sets of burners to be burned simultaneously is 25% of the maximum combustion amount (100% × 2 sets = 200%). Therefore, the combustion amount of the first set burner 1 and the second set burner 2 is 25% (25% × 2 ÷ 200%).
Note that “¼ of two burners” means that two sets of burners are burned simultaneously, and the amount of combustion of each set of burners is 25% (1/4) (that is, two sets of burners). The burn amount (50%) of this burner is 1/4 of the maximum burn amount (200%)).

また、この際、同時に燃焼させるバーナの数（組）を、図３の下段に示す。本実施形態では、各組のバーナを、３０秒の非燃焼時間を空けて、３０秒燃焼させることによって、同時に、かつ連続的に、一組のバーナのみが燃焼するように設定している。 In this case, the number (group) of burners burned simultaneously is shown in the lower part of FIG. In the present embodiment, each set of burners is set so that only one set of burners burns simultaneously and continuously by burning 30 seconds with a non-burning time of 30 seconds.

そして、炉内を所定温度に保つために、各組のリジェネバーナの燃焼量を２５％になるまでターンダウンさせる。
各組のリジェネバーナの燃焼量が２５％になると、各組のバーナは、燃焼量が２５％未満での状態では燃焼させず、停止させる。２５％未満では、効率的な燃焼状態を維持することができないからである。 Then, in order to keep the inside of the furnace at a predetermined temperature, the combustion amount of each set of regenerative burners is turned down to 25%.
When the combustion amount of each set of regenerative burners reaches 25%, each set of burners is not burned and stopped when the combustion amount is less than 25%. This is because if it is less than 25%, an efficient combustion state cannot be maintained.

このときの燃焼量を、図２に、「１２．５％１本バーナの１／４」として示す。ここにおける１組バーナ１および２組バーナ２の燃焼量もそれぞれ２５％である（２００％×１２．５％÷１組）。なお、「１本バーナの１／４」とは、二組のバーナを一組ずつ交互に燃焼させ、各組のバーナの燃焼量が共に２５％（１／４）であることを意味する。 The combustion amount at this time is shown in FIG. 2 as “12.5% 1/4 of one burner”. The combustion amount of the first set burner 1 and the second set burner 2 here is also 25% (200% × 12.5% ÷ 1 set). Note that “1/4 of one burner” means that two sets of burners are alternately burned one by one, and the burn amount of each set of burners is 25% (1/4).

このように１組バーナ１と２組バーナ２の燃焼を制御することによって、所定温度以上まで加熱した炉内を徐々に所定温度まで戻し、その状態を維持することができる。 By controlling the combustion of the first set burner 1 and the second set burner 2 in this way, the interior of the furnace heated to a predetermined temperature or higher can be gradually returned to the predetermined temperature and maintained in that state.

本実施形態に係るリジェネバーナ燃焼制御方法は、二組のバーナ（１組バーナ１および２組バーナ２）のそれぞれを、常に、２５％以上の燃焼量で燃焼させるので、燃焼状態を安定させることができる。
これにより、炉内の酸素量と未燃ガスの増加を防止し、効率的な燃焼を行わせることができる。 In the regenerative burner combustion control method according to this embodiment, each of the two burners (one set burner 1 and two sets burner 2) is always burned at a combustion amount of 25% or more, so that the combustion state is stabilized. Can do.
Thereby, the amount of oxygen in the furnace and the increase of unburned gas can be prevented, and efficient combustion can be performed.

また、同時に一組のバーナのみを交互に燃焼させる際に、各組のバーナの燃焼量を２５％から５０％に上昇させるので、同時に二組のバーナを２５％の燃焼量で燃焼させていた際と同一の燃焼量を確保することができる。
これにより、炉内の温度が急激に低下して所定温度を下回ってしまうといった事態を防止することができる。 In addition, when only one set of burners is burnt alternately at the same time, the burn amount of each set of burners is increased from 25% to 50%, so that two sets of burners were burned at a burn rate of 25% at the same time. The same amount of combustion can be ensured.
Thereby, the situation where the temperature in a furnace falls rapidly and falls below predetermined temperature can be prevented.

（第二実施形態）
次に、図４乃至図６を参照して、本発明の第二実施形態に係るリジェネバーナ燃焼制御方法に説明する。
図４は、三組のリジェネバーナ（１組バーナ１、２組バーナ２、３組バーナ３）を備え付けた炉Ｆを示す概略平面断面図である。図５は、リジェネバーナの燃焼量を示すグラフであり、図６は、同時に燃焼させるリジェネバーナの数（組）を示す表である。 (Second embodiment)
Next, a regeneration burner combustion control method according to a second embodiment of the present invention will be described with reference to FIGS.
FIG. 4 is a schematic plan sectional view showing a furnace F provided with three sets of regeneration burners (one set burner 1, two set burners 2, and three sets burner 3). FIG. 5 is a graph showing the combustion amount of the regenerative burner, and FIG. 6 is a table showing the number (set) of regenerative burners to be burned simultaneously.

１組バーナ１は対向する一対の第一バーナ１−１と第二バーナ１−２で構成され、２組バーナ２は第一バーナ２−１と第二バーナ２−２で、そして、三組バーナは第一バーナ３−１と第二バーナ３−２で構成される。なお、図４において、符号Ｃは制御装置（ＣＰＵ）を示し、符号Ｖはバルブを示す。
リジェネバーナは、１組バーナ１において、一対のバーナ１−１，１−２を交互に燃焼させ、一方のバーナ１−１の燃焼によって得た廃熱を他方のバーナ１−２の蓄熱器で蓄え、その廃熱を他方のバーナ１−２を燃焼させる際に使用し、また、２組バーナ２において、一対のバーナ２−１，２−２を交互に燃焼させ、一方のバーナ２−１の燃焼によって得た廃熱を他方のバーナ２−２の蓄熱器で蓄え、その廃熱を他方のバーナ２−２を燃焼させる際に使用し、また、３組バーナ３において、一対のバーナ３−１，３−２を交互に燃焼させ、一方のバーナ３−１の燃焼によって得た廃熱を他方のバーナ３−２の蓄熱器で蓄え、その廃熱を他方のバーナ３−２を燃焼させる際に使用する。 One set of burners 1 is composed of a pair of first burner 1-1 and second burner 1-2 facing each other, two sets of burners 2 are first burner 2-1 and second burner 2-2, and three sets The burner includes a first burner 3-1 and a second burner 3-2. In FIG. 4, symbol C indicates a control device (CPU), and symbol V indicates a valve.
A regenerative burner burns a pair of burners 1-1 and 1-2 alternately in one set of burners 1, and uses the heat accumulated in one burner 1-1 as a heat accumulator of the other burner 1-2. The waste heat is stored and used when the other burner 1-2 is burned. In the two burners 2, the pair of burners 2-1 and 2-2 are alternately burned, and the one burner 2-1 is burned. The waste heat obtained by the combustion of this is stored in the regenerator of the other burner 2-2, and the waste heat is used to burn the other burner 2-2. -1,3-2 are alternately burned, the waste heat obtained by the combustion of one burner 3-1 is stored in the regenerator of the other burner 3-2, and the waste heat is burned in the other burner 3-2 Used when making

これは、金属（または非鉄金属）の加熱炉や熱処理炉等の炉Ｆに備え付けられた三組のリジェネバーナ（１組バーナ１、２組バーナ２および３組バーナ３）の燃焼を制御する方法であり、同時にこれら三組のバーナを燃焼させて、炉内を所定温度以上に加熱した後、所定温度に保つために、同時に三組のバーナを燃焼させながら、各組のバーナの燃焼量をターンダウンさせる。 This is a method of controlling the combustion of three sets of regenerative burners (one set burner 1, two set burners 2, and three sets burner 3) provided in a furnace F such as a metal (or non-ferrous metal) heating furnace or heat treatment furnace. At the same time, after burning these three sets of burners and heating the interior of the furnace to a predetermined temperature or higher, the three burners are burned at the same time in order to maintain the predetermined temperature. Turn down.

また、この際、同時に燃焼させるバーナの数（組）を、図６の上段に示す。本実施形態では、１組バーナ１の第一バーナ１−１および第二バーナ１−２と、２組バーナ２の第一バーナ２−１および第二バーナ２−２と、３組バーナの第一バーナ３−１および第二バーナ３−２を、それぞれ、交互に６０秒ずつ燃焼させている。そして、各組のバーナの燃焼開始タイミングを２０秒づつ、ずらすことによって、同時に、かつ連続的に、１組バーナ１と２組バーナ２と３組バーナ３が燃焼するように設定している。 In this case, the number (set) of burners burned simultaneously is shown in the upper part of FIG. In the present embodiment, the first burner 1-1 and the second burner 1-2 of the first set burner 1, the first burner 2-1 and the second burner 2-2 of the second set burner 2, and the first of the third set burner. The first burner 3-1 and the second burner 3-2 are alternately burned for 60 seconds. Then, by setting the combustion start timing of each set of burners by 20 seconds, the 1 set burner 1, the 2 set burners 2 and the 3 set burners 3 are set to burn simultaneously and continuously.

その後、各組のリジェネバーナの燃焼量が２５％になると、各組のリジェネバーナの燃焼量をそれぞれ一気に３７．５％まで上昇させるとともに、二組のリジェネバーナを順次、すなわち、１組バーナ１，２組バーナ，３組バーナのうちから二組のバーナを順次、燃焼させる。 After that, when the combustion amount of each set of regenerative burners reaches 25%, the combustion amount of each set of regenerative burners is increased to 37.5% at a stretch, and two sets of regenerative burners are sequentially added, that is, one set of burners 1 , 2 sets of burners and 3 sets of burners are burned sequentially.

このときの燃焼量を、図５に、「２５％３本バーナの１／４」として示す。ここで、「２５％」は、同時に燃焼させる三組のバーナの燃焼量が、最大燃焼量（１００％×３組＝３００％）の２５％であることを示す。従って、各組のバーナの燃焼量はそれぞれ２５％である（２５％×３÷３００％＝２５％）。
なお、「３本バーナの１／４」とは、三組のバーナを同時に燃焼させ、各組のバーナの燃焼量がそれぞれ２５％（１／４）であることを意味する。 The amount of combustion at this time is shown in FIG. 5 as “25% 1/4 of three burners”. Here, “25%” indicates that the combustion amount of the three sets of burners to be burned simultaneously is 25% of the maximum combustion amount (100% × 3 sets = 300%). Therefore, the combustion amount of each set of burners is 25% (25% × 3 ÷ 300% = 25%).
Note that “¼ of three burners” means that three sets of burners are burned simultaneously, and the amount of combustion of each set of burners is 25% (1/4).

また、その際、同時に燃焼させるバーナの数（組）を、図６の中段に示す。ここでは、各組のバーナを２０秒の非燃焼時間を空けて４０秒ずつ燃焼させることによって、同時に、かつ連続的に、二組のバーナを燃焼させている。 In this case, the number (set) of burners burned simultaneously is shown in the middle of FIG. Here, each set of burners is burned for 40 seconds with a non-burning time of 20 seconds, thereby simultaneously and continuously burning two sets of burners.

そして、炉内を所定温度に保つために、各組のリジェネバーナの燃焼量を２５％になるまでターンダウンさせる。 Then, in order to keep the inside of the furnace at a predetermined temperature, the combustion amount of each set of regenerative burners is turned down to 25%.

その後、各組のリジェネバーナの燃焼量が２５％になると、各組のリジェネバーナの燃焼量をそれぞれ一気に５０％まで上昇させるとともに、一組のリジェネバーナのみを順次、すなわち、１組バーナ１，２組バーナ，３組バーナのうちから一組のバーナを順次、燃焼させる。 Thereafter, when the combustion amount of each set of regenerative burners reaches 25%, the combustion amount of each set of regenerative burners is increased to 50% at a stretch, and only one set of regenerative burners is sequentially applied, that is, one set of burners 1, One set of burners is sequentially burned out of two sets of burners and three sets of burners.

このときの燃焼量を、図５に、「１６．６６％２本バーナの１／４」として示す。ここでも、各組のバーナの燃焼量はそれぞれ２５％である（３００％×１６．６６％÷２組）。 The combustion amount at this time is shown in FIG. 5 as “16.6% of the two burners by 16.66%”. Again, the burn amount of each set of burners is 25% (300% × 16.66% ÷ 2 sets).

また、この際、同時に燃焼させるバーナの数（組）を、図６の下段に示す。ここでは、各組のバーナを、４０秒の非燃焼時間を空けて２０秒ずつ燃焼させることによって、同時に、かつ連続的に、一組のバーナのみが燃焼するようにしている。 In this case, the number (group) of burners burned simultaneously is shown in the lower part of FIG. Here, each set of burners is burned for 20 seconds with a non-burning time of 40 seconds, so that only one set of burners is burned simultaneously and continuously.

このときの燃焼量を、図５に「８．３３％１本バーナの１／４」として示す。このときの各組のバーナの燃焼量も、２５％である（３００％×８．３３％÷１組）。 The amount of combustion at this time is shown as "8.33% 1/4 of one burner" in FIG. The combustion amount of each set of burners at this time is also 25% (300% × 8.33% ÷ 1 set).

このように１組バーナ１，２組バーナ２，３組バーナ３の燃焼を制御することによって、所定温度以上まで加熱した炉内を徐々に所定温度まで戻し、その状態を維持することができる。 By controlling the combustion of the first set burner 1, the second set burner 2, and the third set burner 3 in this manner, the inside of the furnace heated to a predetermined temperature or higher can be gradually returned to the predetermined temperature and maintained in that state.

本実施形態に係るリジェネバーナ燃焼制御方法は、各組のリジェネバーナを、常に、２５％以上の燃焼量で燃焼させるので、燃焼状態を安定させることができる。これにより、炉内の酸素量と未燃ガスの増加を防止し、効率的な燃焼を行わせることができる。 In the regenerative burner combustion control method according to the present embodiment, each set of regenerative burners is always burned at a combustion amount of 25% or more, so that the combustion state can be stabilized. Thereby, the amount of oxygen in the furnace and the increase of unburned gas can be prevented, and efficient combustion can be performed.

また、同時に二組のバーナを燃焼させる際に、各組のバーナの燃焼量を２５％から３７．５％に上昇させるので、同時に三組のバーナを２５％の燃焼量で燃焼させていた際と同一の燃焼量を確保することができる。従って、炉内の温度が急激に低下するのを防止することができる。
さらに、同時に一組のバーナのみを順次、燃焼させる際に、各組のバーナの燃焼量を２５％から５０％に上昇させるので、同様に、炉内の温度が所定温度以下まで急激に低下してしまうといった事態を未然に防止することができる。 In addition, when two sets of burners are burned simultaneously, the burn amount of each set of burners is increased from 25% to 37.5%, so when three sets of burners are burned simultaneously with a burn amount of 25% The same amount of combustion can be ensured. Accordingly, it is possible to prevent the temperature in the furnace from rapidly decreasing.
In addition, when only one set of burners is burned sequentially at the same time, the combustion amount of each set of burners is increased from 25% to 50%, and similarly, the temperature in the furnace rapidly decreases to a predetermined temperature or lower. It is possible to prevent such a situation.

（第三実施形態）
次に、図７乃至図９を参照して、本発明の第三実施形態に係るリジェネバーナ燃焼制御方法について説明する。
図７は、四組のリジェネバーナ（１組バーナ１、２組バーナ２、３組バーナ３、４組バーナ４）を備え付けた炉（加熱炉や熱処理炉）Ｆを示す平面図である。図８は、リジェネバーナの燃焼量を示すグラフであり、図９は、同時に燃焼させるリジェネバーナの数（組）を示す表である。 (Third embodiment)
Next, with reference to FIG. 7 thru | or FIG. 9, the regeneration burner combustion control method which concerns on 3rd embodiment of this invention is demonstrated.
FIG. 7 is a plan view showing a furnace (heating furnace or heat treatment furnace) F provided with four sets of regeneration burners (one set burner 1, two set burners 2, three set burners 3, four set burners 4). FIG. 8 is a graph showing the combustion amount of the regenerative burner, and FIG. 9 is a table showing the number (set) of regenerative burners to be burned simultaneously.

１組バーナ１は対向する一対の第一バーナ１−１と第二バーナ１−２で構成され、２組バーナ２は第一バーナ２−１と第二バーナ２−２で、三組バーナは第一バーナ３−１と第二バーナ３−２で、そして第四組バーナは第一バーナ４−１と第二バーナ４−２で、それぞれ構成される。なお、図７において、符号Ｃは制御装置（ＣＰＵ）を示し、符号Ｖはバルブを示す。
リジェネバーナは、１組バーナ１において、一対のバーナ１−１，１−２を交互に燃焼させ、一方のバーナ１−１の燃焼によって得た廃熱を他方のバーナ１−２の蓄熱器で蓄え、その廃熱を他方のバーナ１−２を燃焼させる際に使用し、また、２組バーナ２において、一対のバーナ２−１，２−２を交互に燃焼させ、一方のバーナ２−１の燃焼によって得た廃熱を他方のバーナ２−２の蓄熱器で蓄え、その廃熱を他方のバーナ２−２を燃焼させる際に使用し、また、３組バーナ３において、一対のバーナ３−１，３−２を交互に燃焼させ、一方のバーナ３−１の燃焼によって得た廃熱を他方のバーナ３−２の蓄熱器で蓄え、その廃熱を他方のバーナ３−２を燃焼させる際に使用し、また、４組バーナ４において、一対のバーナ４−１，４−２を交互に燃焼させ、一方のバーナ４−１の燃焼によって得た廃熱を他方のバーナ４−２の蓄熱器で蓄え、その廃熱を他方のバーナ４−２を燃焼させる際に使用する。 One set of burners 1 is composed of a pair of first burner 1-1 and second burner 1-2 facing each other, two sets of burners 2 are first burner 2-1 and second burner 2-2, and three sets of burners are The first burner 3-1 and the second burner 3-2, and the fourth burner is constituted by a first burner 4-1 and a second burner 4-2. In FIG. 7, the symbol C indicates a control device (CPU), and the symbol V indicates a valve.
A regenerative burner burns a pair of burners 1-1 and 1-2 alternately in one set of burners 1, and uses the heat accumulated in one burner 1-1 as a heat accumulator of the other burner 1-2. The waste heat is stored and used when the other burner 1-2 is burned. In the two burners 2, the pair of burners 2-1 and 2-2 are alternately burned, and the one burner 2-1 is burned. The waste heat obtained by the combustion of this is stored in the regenerator of the other burner 2-2, and the waste heat is used to burn the other burner 2-2. -1,3-2 are alternately burned, the waste heat obtained by the combustion of one burner 3-1 is stored in the regenerator of the other burner 3-2, and the waste heat is burned in the other burner 3-2 In addition, in the four-set burner 4, a pair of burners 4-1, 4-2 Alternately burned, the waste heat obtained by the combustion of one burner 4-1 stored in the heat accumulator of the other burners 4-2, uses the waste heat in the combustion of the other burners 4-2.

これは、金属（または非鉄金属）の加熱炉や熱処理炉等の炉Ｆに備え付けられる四組のバーナ（１組バーナ１、２組バーナ２、３組バーナ３および４組バーナ４）の燃焼を制御する方法であり、四組のバーナを同時に燃焼させて炉内を所定温度以上に加熱した後、所定温度に保つために、まず、同時に四組のバーナを燃焼させながら、各組のバーナの燃焼量をターンダウンさせる。 This is the combustion of four sets of burners (1 set burner 1, 2 set burners 2, 3 set burners 3 and 4 set burners 4) provided in a furnace F such as a metal (or non-ferrous metal) heating furnace or heat treatment furnace. This is a control method. After four sets of burners are burned simultaneously and the interior of the furnace is heated to a predetermined temperature or higher, first, the four sets of burners are burned simultaneously, Turn down the amount of combustion.

また、この際、同時に燃焼させるバーナの数（組）を、図９の第一段に示す。本実施形態では、１組バーナ１の第一バーナ１−１および第二バーナ１−２と、２組バーナ２の第一バーナ２−１および第二バーナ２−２と、３組バーナの第一バーナ３−１および第二バーナ３−２と、４組バーナ４の第一バーナ４−１および第二バーナ４−２を、それぞれ、交互に６０秒ずつ燃焼させている。そして、各組のバーナの燃焼開始タイミングを１５秒づつ、ずらすことによって、同時に、かつ連続的に、１組バーナ１と２組バーナ２と３組バーナ３と４組バーナ４が燃焼するように設定している。 In this case, the number (set) of burners burned simultaneously is shown in the first stage of FIG. In the present embodiment, the first burner 1-1 and the second burner 1-2 of the first set burner 1, the first burner 2-1 and the second burner 2-2 of the second set burner 2, and the first of the third set burner. The first burner 3-1 and the second burner 3-2 and the first burner 4-1 and the second burner 4-2 of the four burners 4 are alternately burned for 60 seconds, respectively. Then, by shifting the combustion start timing of each set of burners by 15 seconds, the 1 set burner 1, the 2 set burner 2, the 3 set burner 3 and the 4 set burner 4 are burned simultaneously and continuously. It is set.

その後、各組のリジェネバーナの燃焼量が２５％になると、各組のリジェネバーナの燃焼量をそれぞれ一気に３３．３３％まで上昇させるとともに、三組のリジェネバーナを順次、すなわち、１組バーナ１，２組バーナ，３組バーナ，４組バーナのうちから三組のバーナを順次、燃焼させる。 Thereafter, when the combustion amount of each set of regenerative burners reaches 25%, the combustion amount of each set of regenerative burners is increased to 33.33% at a stretch, and three sets of regenerative burners are sequentially added, that is, one set of burners 1 , 2 sets of burners, 3 sets of burners, and 4 sets of burners are sequentially burned.

このときの燃焼量を図８に、「２５％４本バーナの１／４」として示す。この際、四組のバーナの燃焼量は「２５％」であり、従って、各組のバーナの燃焼量は２５％である（２５％×４組÷４００％）。 The amount of combustion at this time is shown as “1/4 of 25% four burners” in FIG. At this time, the combustion amount of the four sets of burners is “25%”, and therefore the combustion amount of each set of burners is 25% (25% × 4 sets ÷ 400%).

また、その際、同時に燃焼させるバーナの数（組）を、図９の第二段に示す。ここでは、各組のバーナを、１５秒の非燃焼時間を空けて４５秒燃焼させることによって、同時に、かつ連続的に、三組のバーナを燃焼させている。 In this case, the number (set) of burners to be burned simultaneously is shown in the second stage of FIG. Here, three sets of burners are burned simultaneously and continuously by burning each set of burners for 45 seconds with a non-burning time of 15 seconds.

その後、各組のリジェネバーナの燃焼量が２５％になると、各組のリジェネバーナの燃焼量をそれぞれ一気に３７．５％まで上昇させるとともに、二組のリジェネバーナを順次、すなわち、１組バーナ１，２組バーナ，３組バーナ，４組バーナのうちから二組のバーナを順次、燃焼させる。 After that, when the combustion amount of each set of regenerative burners reaches 25%, the combustion amount of each set of regenerative burners is increased to 37.5% at a stretch, and two sets of regenerative burners are sequentially added, that is, one set of burners 1 , 2 sets of burners, 3 sets of burners, and 4 sets of burners are sequentially burned.

このときの燃焼量を、図８に「１８．７５％３本バーナの１／４」として示す。この際、各組のバーナの燃焼量も２５％である（４００％×１８．７５％÷３組）。 The amount of combustion at this time is shown in FIG. 8 as “18.75% ¼ of three burners”. At this time, the combustion amount of each set of burners is also 25% (400% × 18.75% ÷ 3 sets).

また、その際、同時に燃焼させるバーナの数（組）を、図９の第三段に示す。ここでは、各組のバーナを、３０秒の非燃焼時間を空けて、３０秒燃焼させることによって、同時に、かつ連続的に二組のバーナを燃焼させている。 At that time, the number (set) of burners burned simultaneously is shown in the third stage of FIG. Here, each set of burners is burned for 30 seconds with a non-burning time of 30 seconds, so that two sets of burners are burned simultaneously and continuously.

その後、各組のリジェネバーナの燃焼量が２５％になると、各組のリジェネバーナの燃焼量をそれぞれ一気に５０％まで上昇させるとともに、一組のリジェネバーナのみを順次、すなわち、１組バーナ１，２組バーナ，３組バーナ，４組バーナのうちから一組のバーナを順次、燃焼させる。 Thereafter, when the combustion amount of each set of regenerative burners reaches 25%, the combustion amount of each set of regenerative burners is increased to 50% at a stretch, and only one set of regenerative burners is sequentially applied, that is, one set of burners 1, One set of burners is sequentially burned out of the second set burner, the third set burner, and the fourth set burner.

このときの燃焼量を、図８に、「１２．５％２本バーナの１／４」として示す。この際、各組のバーナの燃焼量も、同様に、２５％である（４００％×１２．５％÷２組）。 The amount of combustion at this time is shown in FIG. 8 as “12.5% 1/4 of two burners”. At this time, the combustion amount of each set of burners is also 25% (400% × 12.5% ÷ 2 sets).

また、その際、同時に燃焼させるバーナの数（組）、図９の最終段に示す。ここでは、各組のバーナを、４５秒の非燃焼時間を空けて１５秒燃焼させることによって、同時に、かつ連続的に、一組のバーナのみを燃焼させるものとしている。 In this case, the number (set) of burners to be burned simultaneously is shown in the final stage of FIG. Here, each set of burners is burned for 15 seconds with a non-burning time of 45 seconds, so that only one set of burners is burned simultaneously and continuously.

このときの燃焼量を、図８に「６．２５％１本バーナの１／４」として示す。このときの各組のバーナの燃焼量も、２５％である（４００％×６．２５％÷１組）。 The amount of combustion at this time is shown as "6.25% 1/4 of one burner" in FIG. The combustion amount of each set of burners at this time is also 25% (400% × 6.25% ÷ 1 set).

このように１組バーナ１，２組バーナ２，３組バーナ３，４組バーナ４の燃焼を制御することによって、所定温度以上まで加熱した炉内を徐々に所定温度まで戻し、その状態を維持することができる。 In this way, by controlling the combustion of the first set burner 1, the second set burner 2, the third set burner 3, and the fourth set burner 4, the inside of the furnace heated to a predetermined temperature or higher is gradually returned to the predetermined temperature, and the state is maintained. can do.

本実施形態に係るリジェネバーナ燃焼制御方法も、各組のバーナを、常に、２５％以上の燃焼量で燃焼させるので、燃焼状態を安定させることができ、効率的な燃焼を行わせることができる。 In the regenerative burner combustion control method according to this embodiment, each set of burners is always burned at a combustion amount of 25% or more, so that the combustion state can be stabilized and efficient combustion can be performed. .

また、同時に三組のバーナを燃焼させる際に、各組のバーナの燃焼量を、２５％から３３．３３％に上昇させるので、同時に四組のバーナを２５％の燃焼量で燃焼させていた際と同一の燃焼量を確保することができる。これにより、炉内の温度が急激に低下するのを防止することができる。
さらに、同時に二組のバーナを燃焼させる際に、各組のバーナの燃焼量を２５％から３７．５％に上昇させるので、同時に三組のバーナを２５％の燃焼量で燃焼させていた際と同一の燃焼量を確保することができる。従って、炉内の温度が急激に低下するのを防止することができる。
さらにまた、同時に一組のバーナのみを順次、燃焼させる際に、各組のバーナの燃焼量を２５％から５０％に上昇させるので、同様に、炉内の温度が所定温度以下まで急激に低下してしまうといった事態を未然に防止することができる。 In addition, when three sets of burners were burned at the same time, the burn amount of each set of burners was increased from 25% to 33.33%, so that four sets of burners were burned at a burn rate of 25% at the same time. The same amount of combustion can be ensured. Thereby, it can prevent that the temperature in a furnace falls rapidly.
Furthermore, when burning two sets of burners at the same time, the burn amount of each set of burners is increased from 25% to 37.5%, so when three sets of burners were burned at a burn rate of 25% at the same time The same amount of combustion can be ensured. Accordingly, it is possible to prevent the temperature in the furnace from rapidly decreasing.
Furthermore, when only one set of burners is burned sequentially at the same time, the combustion amount of each set of burners is increased from 25% to 50%, so that the temperature in the furnace rapidly decreases to a predetermined temperature or less. It is possible to prevent such a situation.

（第四実施形態）
次に、図７および図１０を参照して、本発明の第四実施形態に係るリジェネバーナ燃焼制御方法について説明する。
図７は、四組のリジェネバーナを備えた加熱炉や熱処理炉等の炉Ｆを示す概略平面断面図である。また、図１０は、リジェネバーナの燃焼量を示すグラフである。 (Fourth embodiment)
Next, a regeneration burner combustion control method according to a fourth embodiment of the present invention will be described with reference to FIGS.
FIG. 7 is a schematic plan sectional view showing a furnace F such as a heating furnace or a heat treatment furnace provided with four sets of regenerative burners. FIG. 10 is a graph showing the combustion amount of the regeneration burner.

本発明の第一乃至第三実施形態では、各組のバーナの燃焼量が２５％未満になると効率的な燃焼状態を維持することができないので、炉Ｆ内を所定温度に維持するため、ターンダウンによって、四組のバーナの各組のバーナの燃焼量が２５％になると、三組のバーナにするとともに燃焼量を一気に上昇させ（第三実施形態）、またターンダウンによって、三組のバーナの各組のバーナの燃焼量が２５％になると、二組のバーナにするとともに燃焼量を一気に上昇させ（第二実施形態）、さらにターンダウンによって、二組のバーナの各組のバーナの燃焼量が２５％になると、一組のバーナにするとともに燃焼量を一気に上昇させ（第一実施形態）るようにしたが、各組のバーナの燃焼量が２５％未満になる前、すなわち、２５％以上の燃焼量、たとえば、２５％以上５０％以下の間の燃焼量になった場合に、燃焼させる各組のバーナの組数を一つ減らすようにすることもできる。 In the first to third embodiments of the present invention, when the combustion amount of each set of burners is less than 25%, an efficient combustion state cannot be maintained. When the combustion amount of each set of burners of the four sets of burners reaches 25% due to down, the number of burners is increased to three sets and the combustion amount is increased at a stroke (third embodiment). When the combustion amount of each set of burners reaches 25%, two sets of burners are used and the combustion amount is increased at a stroke (second embodiment). Further, by turndown, the burners of each set of two sets of burners are burned. When the amount reaches 25%, a set of burners is used and the amount of combustion is increased at a stroke (first embodiment). However, before the amount of combustion of each set of burners is less than 25%, that is, 25%. % Combustion amount For example, it is also possible to make when it becomes the combustion amount of between 50% to 25% reducing one set number of each set of burners for burning.

この第四実施形態では、燃焼量が５０％になった場合に、各組のバーナの組数を一つ減らす制御を行うようにした。
すなわち、金属（または非鉄金属）の炉（加熱炉や熱処理炉）Ｆに備え付けられる四組のバーナ（１組バーナ１、２組バーナ２、３組バーナ３および４組バーナ４）の燃焼を制御する方法であって、四組のバーナを同時に燃焼させて炉内を所定温度以上に加熱した後、所定温度に保つために、まず、同時に四組のバーナを燃焼させる。 In the fourth embodiment, when the amount of combustion reaches 50%, control is performed to reduce the number of burner groups by one.
That is, the combustion of four sets of burners (one set burner 1, two set burners 2, three set burners 3 and four sets burner 4) provided in a metal (or non-ferrous metal) furnace (heating furnace or heat treatment furnace) F is controlled. In this method, after four sets of burners are burned simultaneously and the interior of the furnace is heated to a predetermined temperature or higher, first, the four sets of burners are burned simultaneously in order to maintain the predetermined temperature.

その後、ターンダウンによって、各組のバーナの燃焼量がそれぞれ５０％になると、各組のリジェネバーナの燃焼量をそれぞれ一気に６６．６６％まで上昇させるとともに、三組のリジェネバーナを順次、すなわち、１組バーナ１，２組バーナ，３組バーナ，４組バーナのうちから三組のバーナを順次、燃焼させる。 After that, when the combustion amount of each set of burners reaches 50% due to the turndown, the combustion amount of each set of regenerative burners is increased to 66.66% at a stretch, and the three sets of regenerative burners are sequentially increased, that is, Three sets of burners are sequentially burned out of one set burner, one set burner, three sets burner, and four sets burner.

このときの燃焼量を、図１０に、「５０％（４本バーナ分の１／２）」として示す。ここでの各組のバーナの燃焼量は、それぞれ５０％である（４００％×５０％÷４組）。なお、「４本バーナ分の１／２」とは、同時に四組のバーナを燃焼させ、各組のバーナの燃焼量がそれぞれ５０％（１／２）であることを意味する。 The combustion amount at this time is shown as “50% (1/2 of four burners)” in FIG. The combustion amount of each set of burners here is 50% (400% × 50% ÷ 4 sets). Note that “1/2 of four burners” means that four sets of burners are burned at the same time, and the burn amount of each set of burners is 50% (1/2).

その後、ターンダウンによって、各組のバーナの燃焼量がそれぞれ５０％になると、各組のリジェネバーナの燃焼量をそれぞれ一気に７５％まで上昇させるとともに、二組のリジェネバーナを順次、すなわち、１組バーナ１，２組バーナ，３組バーナ，４組バーナのうちから二組のバーナを順次、燃焼させる。 Thereafter, when the combustion amount of each set of burners reaches 50% due to the turndown, the combustion amount of each set of regenerative burners is increased to 75% at a stretch, and two sets of regenerative burners are sequentially set, that is, one set. Two sets of burners are sequentially burned among the burner 1, the set 2 burner, the set 3 burner, and the set 4 burner.

このときの燃焼量を、図１０に、「３７．５０％（３本バーナ分の１／２）」として示す。ここでの各組のバーナの燃焼量は、それぞれ５０％である（４００％×３７．５０％÷３組）。なお、「３本バーナ分の１／２」とは、同時に三組のバーナを燃焼させ、各組のバーナの燃焼量がそれぞれ５０％（１／２）であることを意味する。 The combustion amount at this time is shown as “37.50% (1/2 of three burners)” in FIG. The combustion amount of each set of burners here is 50% (400% × 37.50% ÷ 3 sets). Note that “1/2 of three burners” means that three sets of burners are burned at the same time, and the burn amount of each set of burners is 50% (1/2).

その後、ターンダウンによって、各組のバーナの燃焼量がそれぞれ５０％になると、各組のリジェネバーナの燃焼量をそれぞれ一気に１００％まで上昇させるとともに、一組のリジェネバーナのみを順次、すなわち、１組バーナ１，２組バーナ，３組バーナ，４組バーナのうちから一組のバーナを順次、燃焼させる。 Thereafter, when the combustion amount of each set of burners reaches 50% due to the turndown, the combustion amount of each set of regenerative burners is increased to 100% at a stretch, and only one set of regenerative burners is sequentially applied, that is, 1 One set of burners is sequentially burned out of the set burner 1, the set 2 burner, the set 3 burner, and the set 4 burner.

このときの燃焼量を、図１０に、「２５％（２本バーナ分の１／２）」として示す。ここでの各組のバーナの燃焼量は、それぞれ５０％である（４００％×２５％÷２組）。なお、「２本バーナ分の１／２」とは、同時に二組のバーナを燃焼させ、各組のバーナの燃焼量がそれぞれ５０％（１／２）であることを意味する。 The combustion amount at this time is shown as “25% (1/2 of two burners)” in FIG. Here, the burn amount of each set of burners is 50% (400% × 25% ÷ 2 sets). Note that “1/2 of two burners” means that two sets of burners are burned simultaneously, and the amount of combustion of each set of burners is 50% (1/2).

その後、ターンダウンによって、各組のバーナの燃焼量がそれぞれ５０％を経て２５％になると、各組のバーナは、燃焼量が２５％未満での状態では燃焼させず、停止させる。２５％未満では、効率的な燃焼状態を維持することができないからである。 Thereafter, when the combustion amount of each set of burners reaches 25% through 50% due to turn-down, each set of burners is not burned and stopped when the combustion amount is less than 25%. This is because if it is less than 25%, an efficient combustion state cannot be maintained.

このときの燃焼量を、図１０に、「６．２５％（１バーナ分の１／４）」として示す。このときの燃焼量は２５％である（４００％×６．２５％÷１組）。なお、「１２．５０パーセント（１バーナ分の１／２」は、燃焼量が５０％の状態を示す。 The combustion amount at this time is shown as “6.25% (1/4 of one burner)” in FIG. The combustion amount at this time is 25% (400% × 6.25% ÷ 1 set). “12.50 percent (1/2 of one burner)” indicates a state where the combustion amount is 50%.

本実施形態に係るリジェネバーナ燃焼制御方法は、各組のバーナを、常に、２５％以上の燃焼量で燃焼させるので、燃焼状態を安定させることができる。これにより、炉内の酸素量と未燃ガスの増加を防止し、効率的な燃焼を行わせることができる。 In the regenerative burner combustion control method according to the present embodiment, each set of burners is always burned at a combustion amount of 25% or more, so that the combustion state can be stabilized. Thereby, the amount of oxygen in the furnace and the increase of unburned gas can be prevented, and efficient combustion can be performed.

また、同時に三組のバーナを順次、燃焼させる際に、各組のバーナの燃焼量を５０％から６６．６６％に上昇させるので、炉内の温度が急激に低下するのを防止することができる。また、同時に二組のバーナを燃焼させる際に、各組のバーナの燃焼量を５０％から７５％に上昇させるので、同様に、炉内の温度の急激な低下を防止することができる。さらに、同時に一組のバーナのみを順次、燃焼させる際に、各組のバーナの燃焼量を５０％から１００％に上昇させるので、炉内の温度が所定温度以下まで急激に低下してしまうといった事態を未然に防止することができる。 Further, when the three sets of burners are sequentially burned at the same time, the combustion amount of each set of burners is increased from 50% to 66.66%, so that the temperature in the furnace can be prevented from rapidly decreasing. it can. In addition, when the two sets of burners are burned simultaneously, the amount of combustion of each set of burners is increased from 50% to 75%, and similarly, a rapid decrease in the temperature in the furnace can be prevented. Further, when only one set of burners is burned sequentially at the same time, the combustion amount of each set of burners is increased from 50% to 100%, so that the temperature in the furnace rapidly decreases to a predetermined temperature or less. The situation can be prevented beforehand.

なお、本発明の第一乃至第四実施形態に係るリジェネバーナ燃焼制御方法では、バーナの組数を炉Ｆに二組，三組，四組のバーナとして説明したが、それら、二組，三組，あるいは四組のバーナを一群とするユニットにし、ユニット毎に制御することによって、炉Ｆに複数の組のバーナを配置しても本実施形態におけるリジェネバーナ燃焼制御方法を適用することができる。 In the regenerative burner combustion control method according to the first to fourth embodiments of the present invention, the number of sets of burners has been described as two sets, three sets, and four sets of burners in the furnace F. The regenerative burner combustion control method in the present embodiment can be applied even if a plurality of sets of burners are arranged in the furnace F by making a set of four or four sets of burners as a group and controlling each unit. .

二組のリジェネバーナを備えた炉を示す概略平面断面図である。It is a schematic plane sectional view which shows the furnace provided with two sets of regeneration burners. 図１に示すリジェネバーナの燃焼量を示すグラフである。It is a graph which shows the combustion amount of the regeneration burner shown in FIG. 図１の構成において、同時に燃焼させるリジェネバーナの数（組）を示す表である。2 is a table showing the number (set) of regenerative burners to be burned simultaneously in the configuration of FIG. 三組のリジェネバーナを備えた炉を示す概略平面断面図である。It is a schematic plane sectional view which shows the furnace provided with three sets of regeneration burners. 図４に示すリジェネバーナの燃焼量を示すグラフである。It is a graph which shows the combustion amount of the regeneration burner shown in FIG. 図４の構成において、同時に燃焼させるリジェネバーナの数（組）を示す表である。5 is a table showing the number (set) of regenerative burners burned simultaneously in the configuration of FIG. 四組のリジェネバーナを備えた炉を示す概略平面断面図である。It is a schematic plane sectional view showing a furnace provided with four sets of regeneration burners. 図７に示すリジェネバーナの燃焼量を示すグラフである。It is a graph which shows the combustion amount of the regeneration burner shown in FIG. 図７の構成において、同時に燃焼させるリジェネバーナの数（組）を示す表である。8 is a table showing the number (group) of regenerative burners to be burned simultaneously in the configuration of FIG. 図７に示すリジェネバーナの別の燃焼量を示すグラフである。It is a graph which shows another combustion amount of the regeneration burner shown in FIG.

Explanation of symbols

１１組バーナ
１−１第一バーナ
１−２第二バーナ
２２組バーナ
２−１第一バーナ
２−２第二バーナ
３３組バーナ
３−１第一バーナ
３−２第二バーナ
４４組バーナ
４−１第一バーナ
４−２第二バーナ
Ｃ制御装置
Ｆ炉
Ｖバルブ 1 1 set burner 1-1 1st burner 1-2 2nd burner 2 2 set burner 2-1 1st burner 2-2 2nd burner 3 3 set burner 3-1 1st burner 3-2 2nd burner 4 4 Assembly burner 4-1 First burner 4-2 Second burner C Control unit F Furnace V valve

Claims

A pair of burners (1-1, 1-2; 2-1, 2-2) are alternately burned, and waste heat obtained by the combustion of one burner (1-1, 2-1) is converted to the other burner ( 1-2 and 2-2) stored in the heat accumulator, regenerative burners that use the waste heat during the combustion of the other burner (1-2 and 2-2) (1,2), equipped two pairs In a furnace (F) such as a heating furnace or a heat treatment furnace made of metal or non-ferrous metal, a method for controlling the combustion of the two sets of regenerative burners (1, 2) ,
The continuous ignition times at which the burners (1-1, 1-2, 2-1, 2-2) are continuously ignited are all equal, and the combustion start timings of the regenerative burners (1, 2) are mutually connected. In order to keep the inside of the furnace at a predetermined temperature after two sets of regenerative burners (1, 2) are burned at the same time by shifting by half of the time, while burning the burner (1,2), the turn-down is gradually decreased combustion amount of each set of regenerative burners (1, 2) to uniformly respectively,
When the combustion amount of each of the regenerative burners (1, 2) reaches 25%, the combustion amount of each of the regenerative burners (1, 2) is increased to 50%, and each of the burners (1-1, 1) is increased . The time at which 1-2, 2-1 and 2-2) are continuously ignited is ½ of the continuous ignition time, so that a plurality of burners (1-1, 1-2, 2-1 at the same time) , 2-2) does not burn, and in order to keep the inside of the furnace at a predetermined temperature, the combustion amount of each set of regenerative burners (1, 2) is turned down to 25% ,
In addition, the time from the accumulation of waste heat in the heat accumulator to the start of the next combustion of the burner (1-1, 1-2, 2-1, 2-2) having the heat accumulator is set to each burner (1- 1. Regenerative burner combustion control method characterized in that it is the same for 1,1-2,2-1,2-2) .

A pair of burners (1-1, 1-2; 2-1, 2-2; 3-1, 3-2) are alternately burned, and one burner (1-1, 2-1, 3-1) other burner waste heat obtained by the combustion of (1-2,2-2,3-2) stored in the heat accumulator, the waste heat other burner (1-2,2-2,3-2) The three regenerative burners (1, 2, 3) used in the combustion of the three sets of regenerative burners (1, 2, 3) are provided in a furnace (F) such as a metal or non-ferrous metal heating furnace or heat treatment furnace . 2, 3) a method for controlling combustion,
The continuous ignition times at which the burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2) are continuously ignited are all equal, and the regenerative burners (1, 2, 3) The combustion start timing is shifted by 1/3 of the continuous ignition time, and three sets of regenerative burners (1, 2, 3) are simultaneously burned to heat the furnace to a predetermined temperature or higher. in order to keep a predetermined temperature, turndown for simultaneously while burning the three sets of regenerative burners (1,2,3), it is gradually reduced combustion amount of each set of regenerative burners (1, 2, 3) to uniformly each And
When the combustion amount of each set of regenerative burners (1, 2, 3) reaches 25%, the combustion amount (1, 2, 3) of each set of regenerative burners is increased to 37.5%, respectively. By setting the time for the burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2) to ignite continuously to 2/3 of the continuous ignition time, In order to keep only the burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2) to burn and to keep the inside of the furnace at a predetermined temperature, each set of regenerative burners ( 1. Turn down the combustion amount of 1, 2, 3) to 25%
When the combustion amount of each set of regenerative burners (1, 2, 3) reaches 25%, the combustion amount of each set of regenerative burners (1, 2, 3) is increased to 50%, and each burner ( 1-1, 1-2, 2-1, 2-2, 3-1, 3-2) are set to 1/3 of the continuous ignition time, so that a plurality of burners ( 1-1,1-2,2-1,2-2,3-1,3-2) so as not to burn, to keep the inside of the furnace to a predetermined temperature, each pair of regenerative burners (1, 2 , 3) Turn down the combustion amount to 25% ,
Moreover, after the waste heat is stored in the heat accumulator, the burner (1-1, 1-2, 2-1, 2-2, 3-1, 3-2) having the heat accumulator is started until the next combustion starts. A regeneration burner combustion control method characterized in that the time is made equal for each of the burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2) .

A pair of burners (1-1, 1-2; 2-1, 2-2; 3-1, 3-2; 4-1, 4-2) are alternately burned, and one burner (1-1, 1-1) 2-1, 3-1, 4-1) The waste heat obtained by the combustion is stored in the regenerator of the other burner (1-2, 2-2, 3-2, 4-2) , and the waste heat is stored. The regenerative burner (1, 2, 3, 4) used when burning the other burner (1-2, 2-2, 3-2, 4-2) is made up of four sets of metal or non-ferrous metal. In a furnace (F) such as a heating furnace or a heat treatment furnace, a method for controlling the combustion of the four regenerative burners (1, 2, 3, 4) ,
Each of the burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2, 4-1, 4-2) is continuously ignited in the same period of time. The combustion start timing of the burners (1, 2, 3, 4) is shifted from each other by ¼ of the continuous ignition time, and at the same time, four sets of regenerative burners (1, 2, 3, 4) are burned. after heating the predetermined temperature or higher, in order to keep the inside of the furnace to a predetermined temperature, while burning the four sets of regenerative burners (1, 2, 3, 4) simultaneously, each pair of regenerative burners (1, 2, 3 , 4) Turn down to gradually reduce the amount of combustion uniformly,
When the combustion amount of each regenerative burner (1, 2, 3, 4) reaches 25%, the combustion amount of each regenerative burner (1, 2, 3, 4) is increased to 33.33%. In addition, the time for which each of the burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2, 4-1, 4-2) is continuously ignited is equal to the continuous ignition time. By making it 3/4, only three burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2, 4-1, 4-2) are burned at the same time. In order to keep the inside of the furnace at a predetermined temperature, the combustion amount of each set of regenerative burners is turned down to 25%,
When the combustion amount of each regenerative burner (1, 2, 3, 4) reaches 25%, the combustion amount of each regenerative burner (1, 2, 3, 4) is increased to 37.5%. In addition, the time for which each of the burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2, 4-1, 4-2) is continuously ignited is equal to the continuous ignition time. By making it 2/4, only two burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2, 4-1, 4-2) will burn at the same time. In order to keep the inside of the furnace at a predetermined temperature, the combustion amount of each set of regenerative burners (1, 2, 3, 4) is turned down to 25%,
When the combustion amount of each set of regenerative burners (1, 2, 3, 4) reaches 25%, the combustion amount of each set of regenerative burners (1, 2, 3, 4) is increased to 50%, The time for which each of the burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2, 4-1, 4-2) is continuously ignited is 1 / of the continuous ignition time. 4 to prevent a plurality of burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2, 4-1, 4-2) from burning simultaneously, In order to keep the inside of the furnace at a predetermined temperature, the combustion amount of each set of regenerative burners (1, 2, 3, 4) is turned down to 25% ,
In addition, after the waste heat is stored in the heat accumulator, the burner (1-1, 1-2, 2-1, 2-2, 3-1, 3-2, 4-1, 4-2) having the heat accumulator is stored. ) The time until the start of the next combustion is equalized for each of the burners (1-1, 1-2, 2-1, 2-2, 3-1, 3-2, 4-1, 4-2). A regenerative burner combustion control method.

When only one set of regenerative burners (1, 2, 3, 4) is alternately burned, if the amount of combustion of each set of regenerative burners (1, 2, 3, 4) is 25% due to turndown, The regeneration burner combustion control method according to any one of claims 1 to 3 , wherein combustion of each set of regeneration burners (1, 2, 3, 4) is stopped.