JPH09287013A - Device for utilizing heat in hot stove - Google Patents
Device for utilizing heat in hot stoveInfo
- Publication number
- JPH09287013A JPH09287013A JP10008996A JP10008996A JPH09287013A JP H09287013 A JPH09287013 A JP H09287013A JP 10008996 A JP10008996 A JP 10008996A JP 10008996 A JP10008996 A JP 10008996A JP H09287013 A JPH09287013 A JP H09287013A
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- Japan
- Prior art keywords
- air
- heat
- combustion
- fuel gas
- pipe
- 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.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高炉用熱風炉の熱
利用装置に関する。TECHNICAL FIELD The present invention relates to a heat utilization device for a hot blast stove for a blast furnace.
【０００２】[0002]
【従来の技術】かつては、熱風炉の燃焼排ガスの顕熱
は、煙突を経由して大気に放散させていたが、近年、こ
の顕熱の一部を回収し、熱風炉の燃焼室へ供給される燃
焼用空気及び燃料ガスの温度を高めることに利用し、使
用する燃料ガスエネルギーの節減を図るようにしてきて
いる。従来の高炉用熱風炉の燃焼用空気及び燃料ガスを
予熱する方法として、特開昭５３−７２２４７号公報、
実開昭５７−１８４３１号公報や実開昭５９−２８０３
０号公報に記載されているように、燃焼排ガスの熱を回
収する方法が採られている。2. Description of the Related Art In the past, the sensible heat of combustion exhaust gas from a hot stove was dissipated to the atmosphere via a chimney, but in recent years, part of this sensible heat was recovered and supplied to the combustion chamber of the hot stove. It has been used to raise the temperature of combustion air and fuel gas, which is used to reduce the fuel gas energy used. As a method for preheating combustion air and fuel gas in a conventional hot blast stove for a blast furnace, JP-A-53-72247,
Japanese Utility Model Publication No. 57-18431 and Japanese Utility Model Publication 59-2803.
As described in Japanese Patent No. 0, a method of recovering heat of combustion exhaust gas is adopted.
【０００３】図３は従来の熱風炉用熱回収装置の例を示
すもので、この例に基づいて、熱風炉の操業方法を説明
する。熱風炉システムでは、熱風炉の燃焼室１０に燃料
ガス及び燃焼用空気を別々に供給し、燃焼室１０に内蔵
した燃焼器で燃焼した燃焼ガスを連絡管１２を経由させ
蓄熱室１１に入れ、蓄熱室１１に内蔵した蓄熱体を加熱
する。そして、その後煙道弁１、煙道２を通し煙突３を
経て燃焼排ガスとして大気に放散される。なお、燃焼用
空気は燃焼用空気用ブロアによって昇圧され燃焼用空気
管５、バーナ空気弁６を経て、また燃料ガスは燃料ガス
管７、ガス遮断弁８、バーナガス弁９を経て燃焼器に入
る。燃焼室１０である設定時間燃焼した後、燃焼を止め
送風に切り替わる。送風空気は、送風空気ブロア２０に
よって昇圧され送風空気管２１、送風空気弁１９を経て
蓄熱室１１に入り、蓄熱室１１内の蓄熱体の中を通り昇
温され、連絡管１２、燃焼室１０を経て高炉へ送られ
る。FIG. 3 shows an example of a conventional heat recovery device for a hot stove, and the operation method of the hot stove will be described based on this example. In the hot blast stove system, the fuel gas and the combustion air are separately supplied to the combustion chamber 10 of the hot blast stove, and the combustion gas burned by the combustor built in the combustion chamber 10 is put into the heat storage chamber 11 via the communication pipe 12. The heat storage body built in the heat storage chamber 11 is heated. Then, after that, it passes through the flue valve 1 and the flue 2, passes through the chimney 3, and is emitted to the atmosphere as combustion exhaust gas. The combustion air is pressurized by the combustion air blower and passes through the combustion air pipe 5 and the burner air valve 6, and the fuel gas enters the combustor through the fuel gas pipe 7, the gas cutoff valve 8 and the burner gas valve 9. . After burning in the combustion chamber 10 for a set time, the combustion is stopped and switched to blowing air. The blown air is boosted by the blower air blower 20 and enters the heat storage chamber 11 via the blower air pipe 21 and the blower air valve 19 and passes through the heat storage body in the heat storage chamber 11 to be heated, and the communication pipe 12 and the combustion chamber 10 are heated. Sent to the blast furnace.
【０００４】蓄熱式熱風炉は高炉一基に対して一般に３
〜４基設け、同一熱風炉では、燃焼と送風を交互に繰返
し、高炉への送風が連続して行えるようにしている。い
ま熱風炉３基の場合の代表的な燃焼と送風の切替スケジ
ュールの一例を図４に示す。図４からも判るように、い
ずれの時期を見ても送風は１基の熱風炉が行っている。
また切替（及び締込み）期を除き常に燃焼は同時２基の
熱風炉が行っている。しかしながら、切替（及び締込
み）期では熱風炉１基だけしか燃焼していないため、燃
料ガス及び燃焼用空気の本管流量は、それぞれ切替（及
び締込み）期では２基同時燃焼時の約１／２に減少す
る。よって、燃焼排ガスの流量も約１／２となる。The regenerative hot blast stove generally has three blast furnaces.
Up to four units are provided, and combustion and air blowing are alternately repeated in the same hot air stove so that air blowing to the blast furnace can be continuously performed. FIG. 4 shows an example of a typical combustion and blast switching schedule in the case of three hot blast stoves. As can be seen from FIG. 4, one hot blast stove blows air at any time.
Also, except for the switching (and tightening) period, combustion is always performed by two hot stoves at the same time. However, since only one hot stove burns during the switching (and tightening) period, the main flow rates of fuel gas and combustion air are about the same as those during simultaneous burning of two units during the switching (and tightening) period. It is reduced to 1/2. Therefore, the flow rate of the combustion exhaust gas is also reduced to about 1/2.
【０００５】次に、図３に示す従来の装置における熱回
収システムについて説明する。このシステムは煙道２の
途中に第１熱交換器１４、燃焼用空気管５の途中に第２
熱交換器１５、燃料ガス管７の途中に第３熱交換器１６
を内設し、それぞれの熱交換器間を熱媒体が熱媒体循環
ポンプ１３により循環できる閉回路を設けたものであ
る。この装置において、熱媒体は、まず煙道中の第１熱
交換器１４に入り、燃焼排ガス顕熱により昇温され、高
温熱媒体は閉回路を通って燃焼用空気配管中の第２熱交
換器１５及び燃料ガス管中の第３熱交換器１６に入り、
燃焼用空気及び燃料ガスを加熱する。燃焼用空気及び燃
料ガスを加熱することにより熱媒体の温度は低下し、再
び閉回路を通って煙道中の第１熱交換器１４に入る。な
お、熱風炉の切替（または締込み）時の燃焼排ガス温度
及び風量、燃焼用空気量、燃料ガス量の変化に対応し、
熱媒体の循環量を調節するため、バイパス管１８と調節
弁１７を設けている。Next, a heat recovery system in the conventional apparatus shown in FIG. 3 will be described. This system includes a first heat exchanger 14 in the middle of the flue 2 and a second heat exchanger 14 in the middle of the combustion air pipe 5.
The third heat exchanger 16 is provided in the middle of the heat exchanger 15 and the fuel gas pipe 7.
And a closed circuit in which a heat medium can be circulated between the heat exchangers by a heat medium circulation pump 13. In this device, the heat medium first enters the first heat exchanger 14 in the flue and is heated by the sensible heat of the combustion exhaust gas, and the high-temperature heat medium passes through the closed circuit to the second heat exchanger in the combustion air pipe. 15 and the third heat exchanger 16 in the fuel gas pipe,
Heating combustion air and fuel gas. By heating the combustion air and the fuel gas, the temperature of the heat medium is lowered and again passes through the closed circuit and enters the first heat exchanger 14 in the flue. It should be noted that in response to changes in combustion exhaust gas temperature and air volume, combustion air volume, fuel gas volume when switching (or tightening) the hot stove,
A bypass pipe 18 and a control valve 17 are provided to control the circulation amount of the heat medium.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、この従
来の熱回収システムにおいては、燃焼排ガスには水分及
びいおう酸化物（ＳＯ3）を含んでおり、温度が低下す
ると硫酸（Ｈ2ＳＯ4）による酸腐食が発生する。そのた
め、回収後の燃焼排ガス温度に制限があり、燃焼用空気
及び燃料ガスの予熱もその制限により制約される。However, in this conventional heat recovery system, the combustion exhaust gas contains water and sulfur oxide (SO 3 ), and when the temperature decreases, it is generated by sulfuric acid (H 2 SO 4 ). Acid corrosion occurs. Therefore, the temperature of the combustion exhaust gas after recovery is limited, and the preheating of the combustion air and the fuel gas is also limited by the limitation.
【０００７】一般的な予熱温度は、燃焼用空気及び燃料
ガスを予熱する場合はそれぞれ１００℃程度であり、ま
た、どちらか一方を予熱する場合は２００℃程度であ
る。回収側の熱源が確保できれば、もっと予熱温度を高
めたいという潜在的期待がある。The general preheating temperature is about 100 ° C. when preheating the combustion air and the fuel gas, and about 200 ° C. when either one of them is preheated. If the heat source on the recovery side can be secured, there is a potential expectation to further raise the preheating temperature.
【０００８】更に、熱風炉システムで記載した通り、同
一の熱風炉では燃焼と送風を交互に行うため、蓄熱室内
の蓄熱体は、これに対応し蓄熱と放熱を繰り返す。一般
的な熱交換器同様、蓄熱期は燃焼ガス温度に比べ蓄熱体
温度が低く、放熱期には蓄熱体温度に比べ送風空気温度
が低いほど効率的に熱交換が行われる。このことは、熱
風炉操業においては送風空気温度が低いほど、熱交換効
率が良くなることを意味する。しかしながら、熱風炉設
備では、送風空気ブロアで昇圧されているため、温度も
上昇してしまい、そのまま熱風炉へ供給しているので、
熱風炉の熱交換効率を低下させてしまうという問題があ
った。Further, as described in the hot blast stove system, combustion and air blowing are alternately performed in the same hot blast stove, so that the heat storage body in the heat storage chamber repeatedly stores and radiates heat. Similar to a general heat exchanger, the heat storage is performed more efficiently as the temperature of the heat storage body is lower than the temperature of the combustion gas in the heat storage period and the temperature of the blown air is lower than the temperature of the heat storage body in the heat radiation period. This means that in the hot stove operation, the lower the blast air temperature, the better the heat exchange efficiency. However, in the hot stove facility, since the pressure is increased by the blower air blower, the temperature also rises and is supplied to the hot stove as it is.
There is a problem that the heat exchange efficiency of the hot stove is reduced.
【０００９】本発明が解決すべき課題は、燃料ガス及び
燃焼用空気の予熱温度を上昇させ、燃料ガスカロリーの
定価あるいは耐火物制約温度の範囲で燃焼ガス温度の上
昇を実現させると共に、熱風炉の熱交換効率を向上させ
ることにある。The problem to be solved by the present invention is to raise the preheating temperature of the fuel gas and the combustion air to realize the rise of the combustion gas temperature within the range of the fixed value of the fuel gas calorie or the refractory constraint temperature, and the hot stove. To improve the heat exchange efficiency.
【００１０】[0010]
【課題を解決するための手段】前記課題を解決するた
め、本発明の熱風炉の熱利用装置は、燃焼室及び該燃焼
室から排出される高温排ガスの熱を蓄熱する蓄熱室から
なる熱風炉と、前記燃焼室に燃料ガス及び燃焼用空気を
送る燃料ガス管及び燃焼用空気管と、前記蓄熱室に送風
空気ブロワーから圧送された空気を送気する送風空気管
と、前記蓄熱室に送気されて蓄熱体の中を通った空気を
連絡管を通して前記燃焼室に送り高炉に送気する高炉送
風管と、燃焼室で燃焼され蓄熱室を通った燃焼排ガスを
煙突に送気する煙道とを備えた熱風炉設備において、前
記送風空気管の途中に熱交換器を設け、この熱交換器で
熱回収した熱媒体で前記燃料ガス及び燃焼用空気の少な
くとも一方を昇温する熱交換器を、当該管の途中に設け
たものである。In order to solve the above-mentioned problems, a heat utilization device for a hot stove according to the present invention is a hot stove comprising a combustion chamber and a heat storage chamber for storing the heat of high-temperature exhaust gas discharged from the combustion chamber. A fuel gas pipe and a combustion air pipe for feeding fuel gas and combustion air to the combustion chamber, a blast air pipe for feeding air blown from a blast air blower to the heat storage chamber, and a heat storage chamber for feeding the heat storage chamber. A blast furnace blower tube that sends the air that has been vaporized and passed through the heat storage body to the combustion chamber through a connecting pipe, and a flue that sends the combustion exhaust gas that has been burned in the combustion chamber and that has passed through the heat storage chamber to the chimney. In a hot stove facility including a heat exchanger provided in the middle of the blown air pipe, the heat medium heat-recovered by the heat exchanger heats at least one of the fuel gas and combustion air. Is provided in the middle of the pipe.
【００１１】この装置において、さらに、煙道における
燃焼排ガス顕熱を、前記燃料ガス及び燃焼用空気の少な
くとも一方の予熱に利用する従来の熱回収システムと組
み合わせ、更なる予熱温度の上昇や予熱を行っていない
燃料ガスもしくは燃焼用空気の予熱を行うことが可能と
なる。In this device, the sensible heat of the combustion exhaust gas in the flue is further combined with a conventional heat recovery system for preheating at least one of the fuel gas and the combustion air to further raise the preheating temperature and preheat. It is possible to preheat the fuel gas or the combustion air that has not been performed.
【００１２】燃料ガスや燃焼用空気の予熱（昇温）は、
燃焼ガス温度を耐火物の制約範囲内で更に上昇させるこ
ととなり、この場合高炉への送風温度をより高くするこ
とが可能となる。また、燃料ガスや燃焼用空気の予熱
（昇温）による別の効果として、同じ燃焼ガス温度とす
る場合、すなわち同じ高炉への送風温度でよい場合は、
燃焼ガスカロリーを低下させることが可能となる。Preheating (heating) of fuel gas and combustion air is
The combustion gas temperature will be further raised within the restricted range of the refractory material, and in this case, the blast temperature to the blast furnace can be made higher. As another effect of preheating (heating) of the fuel gas and the combustion air, when the same combustion gas temperature is used, that is, when the same blast temperature to the blast furnace is required,
It is possible to reduce the calorific value of combustion gas.
【００１３】一般に熱風炉用の燃料ガスは、高炉で副生
される高炉ガスを基に、不足分のガスカロリーを調整す
るため、コークス炉ガス、転炉ガス及び液化石油ガス等
を添加しており、これらの高価なガスの添加量を削減す
ることができる。In general, a fuel gas for a hot stove is prepared by adding a coke oven gas, a converter gas, a liquefied petroleum gas, etc., in order to adjust a shortage gas calorie based on a blast furnace gas produced as a by-product in the blast furnace. Therefore, the amount of addition of these expensive gases can be reduced.
【００１４】なお、予熱（昇温）のための熱源は熱風炉
手前の送風空気顕熱であり、送風空気温度を下げて蓄熱
室に送り込むことから、熱風炉の熱効率をあわせて向上
させることができる。The heat source for preheating (heating) is sensible heat of blast air in front of the hot blast stove, and since the blast air temperature is lowered and sent to the heat storage chamber, the thermal efficiency of the hot blast stove can also be improved. it can.
【００１５】[0015]
【発明の実施の形態】以下に、本発明の実施例を説明す
る。本発明に関する送風空気管途中に熱交換器を設置し
た場合のフローシートを図１及び２に示す。図１は、本
発明の第１実施例を示すもので、送風空気管２１内に第
４熱交換器２２を設置し送風空気顕熱を回収し、第２熱
交換器１５、第３熱交換器１６との熱交換器間を熱媒体
が熱媒体循環ポンプ１３により循環できる閉回路を設け
る。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. 1 and 2 show flow sheets in the case where a heat exchanger is installed midway in the blown air pipe according to the present invention. FIG. 1 shows a first embodiment of the present invention, in which a blast air sensible heat is recovered by installing a fourth heat exchanger 22 in a blast air pipe 21, a second heat exchanger 15, and a third heat exchange. A closed circuit is provided in which the heat medium can be circulated between the heat exchanger and the heat exchanger 16 by the heat medium circulation pump 13.
【００１６】また、図４に示すように、一般い熱風炉は
２基燃焼を行っているが、切替（及び締込み）時は１基
燃焼になり、燃焼用空気及び燃料ガスも通常の１／２に
なる。しかしながら、送風は常時１基の熱風炉で行って
いるため、流量は一定である。よって、従来の排熱回収
設備同様、安定して予熱を行うため熱媒流量バイパス管
１８及び熱媒流量調節弁１７を設けている。Further, as shown in FIG. 4, the general hot-air stove burns two units, but when switching (and tightening), one unit burns, and the combustion air and the fuel gas also use the normal one. / 2. However, since the air is constantly blown by one hot stove, the flow rate is constant. Therefore, like the conventional exhaust heat recovery equipment, the heat medium flow bypass pipe 18 and the heat medium flow control valve 17 are provided for stable preheating.
【００１７】図２は、本発明の第２実施例を示すもの
で、煙道途中に熱交換器を設け、この熱交換器で熱回収
した顕熱を利用して前記燃焼用空気を昇温する従来の熱
回収システムと、送風空気管の途中に熱交換器を設け、
この熱交換器で熱回収した熱媒体で、予熱されていない
燃料ガスを昇温する熱交換器をさらに設けたものを組み
合わせたものである。FIG. 2 shows a second embodiment of the present invention in which a heat exchanger is provided in the middle of the flue and the sensible heat recovered by the heat exchanger is used to raise the temperature of the combustion air. A conventional heat recovery system and a heat exchanger in the middle of the blast air pipe,
This is a combination of a heat medium recovered by the heat exchanger and further provided with a heat exchanger for raising the temperature of the fuel gas that has not been preheated.
【００１８】第１熱交換器１４と第２熱交換器１５を循
環ポンプ１３で１つの閉回路を持ち、第４熱交換器２２
と第３熱交換器１６を別の循環ポンプ１３でもうーつの
閉回路を持つ。つまり、２つの閉回路を持つ装置であ
る。The first heat exchanger 14 and the second heat exchanger 15 have a closed circuit with the circulation pump 13 and have a fourth heat exchanger 22.
The third heat exchanger 16 and another circulation pump 13 have another closed circuit. In other words, it is a device having two closed circuits.
【００１９】第１熱交換器１４が属する閉回路及び第４
熱交換器２２が属する閉回路共、燃焼用空気及び燃料ガ
スの予熱温度を一定に保つために、熱媒流量バイパス管
１８と熱媒流量調節弁１７を設置する。図２では、第１
熱交換器１４と第２熱交換器１５との組み合わせを示し
ているが、第１熱交換器１４と第３熱交換器１６との組
み合わせでも可能である。この場合、第４熱交換器２２
と第２熱交換器１５との組み合わせとなる。The closed circuit to which the first heat exchanger 14 belongs and the fourth
Both the closed circuit to which the heat exchanger 22 belongs are provided with a heat medium flow bypass pipe 18 and a heat medium flow control valve 17 in order to keep the preheating temperatures of the combustion air and the fuel gas constant. In FIG. 2, the first
Although the combination of the heat exchanger 14 and the second heat exchanger 15 is shown, the combination of the first heat exchanger 14 and the third heat exchanger 16 is also possible. In this case, the fourth heat exchanger 22
And the second heat exchanger 15 are combined.
【００２０】また、図２では、全て熱媒循環方式を採用
しているが、現状別の方法（例えばエレメント回転式、
フード回転式、固定プレート式等）で、燃焼排ガス顕熱
を回収して燃焼用空気または燃料ガスのみ予熱している
場合、その設備はそのままで、第４熱交換器２２と予熱
されていない側の第２熱交換器１５または第３熱交換器
１６の組み合わせのみ追加することも可能となる。In addition, in FIG. 2, although the heat medium circulation system is adopted in all cases, another method (for example, element rotation system,
Hood rotation type, fixed plate type, etc.), when the sensible heat of the combustion exhaust gas is recovered and only the combustion air or the fuel gas is preheated, the equipment remains as it is and the side not preheated with the fourth heat exchanger 22. It is also possible to add only the combination of the second heat exchanger 15 or the third heat exchanger 16.
【００２１】[0021]
（１） 送風空気の顕熱を利用し、燃焼用空気及び燃料
ガスの少なくとも一方の予熱を行うため、燃焼ガス温度
を変えない場合、燃料ガスカロリーを低減できる。つま
り、高価なコークス炉ガスや転炉ガス及び液化石油ガス
等の添加量を削減できる。 （２） 熱風炉手前の送風空気温度を低下させるため、
熱風炉効率も上昇する。 （３） 既設の排熱回収設備との組み合わせが容易に行
える。既設の改造が少ない。(1) Since the sensible heat of the blast air is used to preheat at least one of the combustion air and the fuel gas, the fuel gas calorie can be reduced when the combustion gas temperature is not changed. That is, the amount of expensive coke oven gas, converter gas, liquefied petroleum gas, etc. added can be reduced. (2) To reduce the temperature of the blast air before the hot stove,
Hot stove efficiency will also increase. (3) It can be easily combined with the existing exhaust heat recovery equipment. There are few existing modifications.
【図１】 本発明の第１実施例の構成を示す平面的配置
図である。FIG. 1 is a plan layout view showing a configuration of a first embodiment of the present invention.
【図２】 本発明の第２実施例の構成を示す平面的配置
図である。FIG. 2 is a plan layout view showing a configuration of a second exemplary embodiment of the present invention.
【図３】 従来の熱媒体循環方式の熱風炉の熱回収装置
の概要を示す平面的配置図である。FIG. 3 is a plan layout view showing an outline of a conventional heat recovery device of a heat medium circulation type hot-blast stove.
【図４】 熱風炉排ガスの温度変動及び流量変動のパタ
ーンを示すグラフである。FIG. 4 is a graph showing patterns of temperature fluctuation and flow rate fluctuation of hot stove exhaust gas.
１ 煙道弁、２ 煙道管、３ 煙突、４ 燃焼用空気フ
ァン、５ 燃焼用空気管、６ バーナ空気弁、７ 燃料
ガス管、８ ガス遮断弁、９ バーナガス弁、１０ 燃
焼室、１１ 蓄熱室、１２ 連結管、１３ 熱媒循環ポ
ンプ、１４ 第１熱交換器、１５ 第２熱交換器、１６
第３熱交換器、１７ 流量調整バイパス弁、１８ 流
量調整バイパス管、１９ 送風空気弁、２０ 送風空気
ブロワー、２１ 送風空気管、２２ 第４熱交換器1 flue valve, 2 flue pipe, 3 chimney, 4 combustion air fan, 5 combustion air pipe, 6 burner air valve, 7 fuel gas pipe, 8 gas cutoff valve, 9 burner gas valve, 10 combustion chamber, 11 heat storage Chamber, 12 connecting pipe, 13 heat medium circulation pump, 14 first heat exchanger, 15 second heat exchanger, 16
Third heat exchanger, 17 flow rate adjusting bypass valve, 18 flow rate adjusting bypass pipe, 19 blast air valve, 20 blast air blower, 21 blast air pipe, 22 4th heat exchanger
───────────────────────────────────────────────────── フロントページの続き (72)発明者 後藤 学 北九州市戸畑区大字中原46−59 新日本製 鐵株式会社機械・プラント事業部内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Manabu Goto 46-59 Nakahara, Tobata-ku, Kitakyushu City Nippon Steel Corporation Machinery & Plant Division
Claims (2)
排ガスの熱を蓄熱する蓄熱室からなる熱風炉と、前記燃
焼室に燃料ガス及び燃焼用空気を送る燃料ガス管及び燃
焼用空気管と、前記蓄熱室に送風空気ブロワーから圧送
された空気を送気する送風空気管と、前記蓄熱室に送気
されて蓄熱体の中を通った空気を連絡管を通して前記燃
焼室に送り高炉に送気する高炉送風管と、燃焼室で燃焼
され蓄熱室を通った燃焼排ガスを煙突に送気する煙道と
を備えた熱風炉設備において、 前記送風空気管の途中に熱交換器を設け、この熱交換器
で熱回収した熱媒体で前記燃料ガス及び燃焼用空気の少
なくとも一方を昇温する熱交換器を、当該管の途中に設
けたことを特徴とする熱風炉の熱利用装置。1. A hot stove comprising a combustion chamber and a heat storage chamber for storing heat of high-temperature exhaust gas discharged from the combustion chamber, and a fuel gas pipe and a combustion air pipe for feeding fuel gas and combustion air to the combustion chamber. And a blast air pipe for sending air that is pressure-fed from the blast air blower to the heat storage chamber, and air sent to the heat storage chamber and passing through the heat storage body to the combustion chamber through the connecting pipe to the blast furnace. In a hot stove facility having a blast furnace blower tube for sending air, and a flue that sends combustion exhaust gas that has been burned in a combustion chamber and passed through a heat storage chamber to a chimney, a heat exchanger is provided in the middle of the blown air tube, A heat utilization device for a hot stove, characterized in that a heat exchanger for raising the temperature of at least one of the fuel gas and the combustion air with the heat medium recovered in the heat exchanger is provided in the middle of the tube.
記燃料ガス及び燃焼用空気の少なくとも一方の予熱に利
用するシステムを備えた熱風炉に、組み合わせて装備す
ることを特徴とする請求項１記載の熱風炉の熱利用装
置。2. A hot stove equipped with a system for utilizing the sensible heat of combustion exhaust gas in the flue gas for preheating at least one of the fuel gas and combustion air, in combination. The heat utilization device of the hot stove described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10008996A JPH09287013A (en) | 1996-04-22 | 1996-04-22 | Device for utilizing heat in hot stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10008996A JPH09287013A (en) | 1996-04-22 | 1996-04-22 | Device for utilizing heat in hot stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09287013A true JPH09287013A (en) | 1997-11-04 |
Family
ID=14264703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10008996A Pending JPH09287013A (en) | 1996-04-22 | 1996-04-22 | Device for utilizing heat in hot stove |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09287013A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5468172B1 (en) * | 2013-10-16 | 2014-04-09 | 新日鉄住金エンジニアリング株式会社 | Hot stove facility |
| GB2509121A (en) * | 2012-12-21 | 2014-06-25 | Siemens Plc | Hot blast stoves where cold blast air has been passed through a heat exchanger |
| GB2520578A (en) * | 2013-11-21 | 2015-05-27 | Siemens Vai Metals Tech Gmbh | A method and apparatus for supplying blast to a blast furnace |
| CN107227382A (en) * | 2017-07-31 | 2017-10-03 | 中冶京诚工程技术有限公司 | A kind of hot blast stove system of blast furnace |
| CN110425730A (en) * | 2019-08-29 | 2019-11-08 | 嘉鹏再升科技（深圳）股份有限公司 | A kind of improved hot wind furnace equipped with accumulator |
| CN112342332A (en) * | 2020-10-22 | 2021-02-09 | 马鞍山钢铁股份有限公司 | Ignition heat preservation and inverse air supply integrated system for hot blast stove and operation method |
| CN113061717A (en) * | 2021-03-29 | 2021-07-02 | 北京卡卢金热风炉技术有限公司 | Roasting system and method for producing oxidized pellets |
-
1996
- 1996-04-22 JP JP10008996A patent/JPH09287013A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2509121A (en) * | 2012-12-21 | 2014-06-25 | Siemens Plc | Hot blast stoves where cold blast air has been passed through a heat exchanger |
| GB2509121B (en) * | 2012-12-21 | 2015-03-18 | Siemens Plc | Apparatus for supplying blast to a blast furnace |
| US9868998B2 (en) | 2012-12-21 | 2018-01-16 | Primetals Technologies Ltd | Method and apparatus for supplying blast to a blast furnace |
| JP5468172B1 (en) * | 2013-10-16 | 2014-04-09 | 新日鉄住金エンジニアリング株式会社 | Hot stove facility |
| WO2015056630A1 (en) | 2013-10-16 | 2015-04-23 | 新日鉄住金エンジニアリング株式会社 | Hot blast furnace facility |
| CN105637103A (en) * | 2013-10-16 | 2016-06-01 | 新日铁住金工程技术株式会社 | Hot blast furnace facility |
| KR20160073977A (en) | 2013-10-16 | 2016-06-27 | 신닛떼쯔 수미킨 엔지니어링 가부시끼가이샤 | Hot blast furnace facility |
| GB2520578A (en) * | 2013-11-21 | 2015-05-27 | Siemens Vai Metals Tech Gmbh | A method and apparatus for supplying blast to a blast furnace |
| CN107227382A (en) * | 2017-07-31 | 2017-10-03 | 中冶京诚工程技术有限公司 | A kind of hot blast stove system of blast furnace |
| CN110425730A (en) * | 2019-08-29 | 2019-11-08 | 嘉鹏再升科技（深圳）股份有限公司 | A kind of improved hot wind furnace equipped with accumulator |
| CN112342332A (en) * | 2020-10-22 | 2021-02-09 | 马鞍山钢铁股份有限公司 | Ignition heat preservation and inverse air supply integrated system for hot blast stove and operation method |
| CN113061717A (en) * | 2021-03-29 | 2021-07-02 | 北京卡卢金热风炉技术有限公司 | Roasting system and method for producing oxidized pellets |
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