JP3083678B2 - Blast furnace furnace cooling system - Google Patents
Blast furnace furnace cooling systemInfo
- Publication number
- JP3083678B2 JP3083678B2 JP05135124A JP13512493A JP3083678B2 JP 3083678 B2 JP3083678 B2 JP 3083678B2 JP 05135124 A JP05135124 A JP 05135124A JP 13512493 A JP13512493 A JP 13512493A JP 3083678 B2 JP3083678 B2 JP 3083678B2
- Authority
- JP
- Japan
- Prior art keywords
- cooling
- furnace
- water
- circulation
- blast furnace
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Blast Furnaces (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、高炉の炉体冷却の緩冷
却調整装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slow cooling control device for cooling a furnace body of a blast furnace.
【０００２】[0002]
【従来の技術】従来の技術としては、例えば（その１）
として特開昭５０−７４５０３号公報に開示されている
『高炉炉体冷却方法』を挙げることができる。この技術
を図２によってその概要を説明すると、その特徴は、目
的を「高温操業のもとに高い生産性を維持している高炉
の炉体冷却方法」とし、これを達成するために「冷却水
は脱気器１３を経てヘッドタンク１４に供給され、下降
管１５を通って、クーラー１６、ポンプ１７、送水管ヘ
ッダー１８を経てステーブ群１９を通り、戻管ヘッダー
２０から戻管２１を経て、ヘッドタンク１４の所定水位
まで充満する。ポンプ１７を稼働後は上記のループを水
を循環して炉ライニング２２を冷却し続け通常の操業を
行うこと」を技術手段とするものであり、一般にステー
ブ冷純水強制循環冷却システムとして実用化されてい
る。2. Description of the Related Art Conventional techniques include, for example, (Part 1)
For example, there is a "method of cooling a blast furnace furnace" disclosed in Japanese Patent Application Laid-Open No. 50-74503. This technology is schematically described with reference to FIG. 2. The feature is that the purpose is "a method of cooling a furnace body of a blast furnace that maintains high productivity under high-temperature operation". The water is supplied to the head tank 14 via the deaerator 13, passes through the downcomer 15, passes through the cooler 16, the pump 17, the water pipe header 18, the stave group 19, and returns from the return pipe header 20 via the return pipe 21. To a predetermined water level in the head tank 14. After the pump 17 is operated, water is circulated through the above-mentioned loop to cool the furnace lining 22 and perform normal operation. " It has been put into practical use as a forced cold water stove cooling system.
【０００３】また他の従来の技術としては、例えば（そ
の２）として特開昭５８−１９４１５号公報に開示され
ている『高炉炉体のステーブ冷却方法』を挙げ、この技
術を図３によってその概要を説明すると、その特徴は、
目的を「ステーブ冷却を行う高炉に複数の冷却系を独立
して設け、それぞれの冷媒循環経路にバイパス管を設け
て所望の系の冷媒を冷却することにより、炉体の熱負荷
に応じたきめ細かな炉体冷却を行う。」とし、これを達
成するために「高炉２３を高さ方向で複数個に分割し、
独立のステーブ冷却系Ｃ、Ｄを形成する。各冷却系Ｃ、
Ｄの冷媒循環経路Ｃ１、Ｄ１にクーラーＣ３、Ｄ３を備
えたバイパス管Ｃ２、Ｄ２を設ける。例えば系Ｃによる
炉体の冷却を冷純水で行う場合には、遮断弁Ｃ６を閉止
してバイパス弁Ｃ７、Ｃ８を開ける。また系Ｄで温純水
による冷却を行う場合には、バイパス弁Ｄ７、Ｄ８を閉
止する。このように各弁の開閉あるいは開度を調整して
冷媒の温度を調節し、炉体の熱負荷に応じた冷却を行
い、高炉操業を安定させること」を技術手段とするもの
である。As another conventional technique, for example, (2) a method for stave cooling of a blast furnace furnace disclosed in Japanese Patent Application Laid-Open No. 58-19415 is described. To summarize, the features are:
The purpose is `` a plurality of cooling systems are independently provided in a blast furnace that performs stave cooling, and bypass pipes are provided in each refrigerant circulation path to cool the refrigerant of a desired system, so that fine-graining according to the heat load of the furnace body can be performed. In order to achieve this, the blast furnace 23 is divided into a plurality of pieces in the height direction.
Independent stave cooling systems C and D are formed. Each cooling system C,
D is provided with bypass pipes C2 and D2 provided with coolers C3 and D3 in the refrigerant circulation paths C1 and D1. For example, when cooling the furnace body by the system C with cold pure water, the shutoff valve C6 is closed and the bypass valves C7 and C8 are opened. When cooling with hot pure water in the system D, the bypass valves D7 and D8 are closed. In this manner, the opening and closing or opening of each valve is adjusted to adjust the temperature of the refrigerant, perform cooling in accordance with the heat load of the furnace, and stabilize the operation of the blast furnace. "
【０００４】[0004]
【発明が解決しようとする課題】従来の高炉の炉体冷却
は、クーラーで水温を下げた冷却水を循環ポンプで炉体
冷却体に循環させ、常時強冷却する冷水強制循環冷却が
実用化されている。冷水強制循環冷却は、炉体冷却体の
溶損を抑制し、炉体を長期間健全に維持するには最適で
あるが、高炉操業を安定化させることに対しては問題が
あることが近年明確となった。シャフト上部のステーブ
クーラーを冷水強制循環冷却により強冷却した場合、炉
壁近傍の鉱石がステーブクーラーによって冷却され、還
元されないまま炉底に降りてきていわゆる生鉱落ちを引
き起こす問題がある。また、炉底を冷やし過ぎた場合、
炉底に貯留した溶銑の温度が下がって凝固し、凝固銑鉄
が上方へ増大して、炉底の溶銑貯留能力を著しく減少し
てしまう、いわゆる炉底隆起を引き起こす問題がある。
これらの問題は、特に高炉が低生産操業を行うときに顕
著に発生する。高炉操業を安定させるためには、炉体の
熱負荷に応じて冷却の強さの調整を行うことが必要であ
り、前記した冷水強制循環冷却をベースとしながら、必
要なときには冷却の強さを低下させる緩冷却も必要であ
る。In the conventional furnace body cooling of a blast furnace, forced water circulating cooling, in which cooling water whose temperature has been lowered by a cooler and circulated through a furnace body cooling body by a circulating pump and which is always strongly cooled, has been put to practical use. ing. Chilled water forced circulation cooling is ideal for suppressing melting of the furnace body cooling body and maintaining the furnace body sound for a long period of time.However, in recent years, there have been problems with stabilizing blast furnace operation. It became clear. When the stave cooler at the upper part of the shaft is strongly cooled by forced water cooling, there is a problem that ore near the furnace wall is cooled by the stave cooler and descends to the furnace bottom without being reduced, thereby causing so-called raw ore dropping. Also, if the furnace bottom is too cold,
There is a problem in that the temperature of the hot metal stored in the furnace bottom decreases and solidifies, and the solidified pig iron increases upward, so that the hot metal storing capacity of the furnace bottom is remarkably reduced.
These problems are particularly noticeable when the blast furnace operates in low production. In order to stabilize the operation of the blast furnace, it is necessary to adjust the cooling intensity in accordance with the heat load of the furnace body. Slow cooling to reduce is also required.
【０００５】前記した従来技術（その１）は、一般にス
テーブ冷純水強制循環冷却システムとして実用化されて
いるものであるが、本発明の目的とする高炉の炉体冷却
の一部に対する緩冷却調整装置を提供するものではな
い。また前記した従来技術（その２）は、次の問題点を
有する。「ステーブ冷却を行う高炉に複数の冷却系を独
立して設け、それぞれの冷媒循環経路にバイパス管を設
けて所望の系の冷媒を冷却することにより、炉体の熱負
荷に応じたきめ細かな炉体冷却を行うこと」を技術手段
とする構成のため、複数の冷却系それぞれに冷媒を冷却
する装置、具体的には熱交換器（クーラー）と冷媒用管
路、二次冷媒用管路および気水分離ドラム、補給水装置
などの設置が必要であるため、設備コストアップ、設置
スペース拡大などの問題点を有する。なお、気水分離ド
ラムとは、前記したヘッドタンクと同様なものである
が、冷却水がステーブにより加熱され一部蒸気となる場
合に、冷却水から蒸気を分離する役目を持つものであ
る。更に、従来技術（その２）は、高温冷媒により全体
を緩冷却している状態をベースとして、局部的に冷媒を
クーラーで冷却して強冷却を行うものであり、本発明と
その出発点ガ正反対のものである。The above-mentioned prior art (No. 1) is generally put into practical use as a stove-cooled pure water forced circulation cooling system. It does not provide an adjusting device. Further, the above-described related art (No. 2) has the following problem. "A plurality of cooling systems are independently provided in a blast furnace that performs stave cooling, and a bypass pipe is provided in each of the refrigerant circulation paths to cool the refrigerant of a desired system, so that a fine furnace according to the heat load of the furnace body. To perform the body cooling "as a technical means, a device for cooling a refrigerant to each of a plurality of cooling systems, specifically, a heat exchanger (cooler) and a refrigerant line, a secondary refrigerant line and Since it is necessary to install a steam separator drum, a makeup water device, and the like, there are problems such as an increase in equipment cost and an increase in installation space. The steam separator is similar to the above-described head tank, but has a role of separating steam from the cooling water when the cooling water is heated by the stave and partially becomes steam. Further, the prior art (Part 2) is to perform strong cooling by locally cooling the refrigerant with a cooler based on a state in which the whole is slowly cooled by a high-temperature refrigerant. The exact opposite.
【０００６】本発明が解決しようとする課題は、前記し
た従来技術（その１）に示した、一般にステーブ冷純水
強制循環冷却システムとして実用化されている高炉炉体
冷却設備システムの中で、一部の、特に緩冷却調整の必
要な部分に対して、緩冷却調整装置を低コストで供給す
ることである。The problem to be solved by the present invention is that, among the blast furnace furnace body cooling equipment systems which are generally put into practical use as a stove cold pure water forced circulation cooling system shown in the above-mentioned prior art (No. 1), An object of the present invention is to provide a low-cooling adjusting device at a low cost for a part, particularly, a part requiring a slow cooling adjustment.
【０００７】[0007]
【課題を解決するための手段】本発明は、循環ポンプ、
高炉炉体冷却体、ヘッドタンク、熱交換機を管路により
循環系として形成し、冷却水を供給、循環する高炉炉体
冷却装置において、高炉炉体冷却体を強制冷却用冷却体
Ａと強制冷却と緩冷却との切り替えが可能な冷却体Ｂに
分離し、前記冷却体Ａについては、循環ポンプＡ、冷却
体Ａ、ヘッドタンク、熱交換機を管路により循環系とし
て形成して全体循環系とし、冷却体Ｂについては、循環
ポンプ出口弁、冷却体Ｂ、循環ポンプＢを管路により循
環系として形成して独立循環系とし、かつ、全体循環系
の熱交換機から冷却体Ａまで冷却水を送る管路と、独立
循環系の循環ポンプ出口弁から冷却体Ｂまで冷却水を送
る管路とが、給水量調整弁を介して接続されるととも
に、冷却体Ｂから出側の配管には、ヘッドタンクに連通
する配水管が設けられており、強制冷却時には前記給水
量調節弁を開き、緩冷却時には、前記給水量調節弁を絞
って独立循環系の冷却水量を調節することを特徴とする
高炉炉体冷却装置によって前記課題を解決した。SUMMARY OF THE INVENTION The present invention provides a circulating pump,
In a blast furnace furnace cooling device that forms a circulating system of a blast furnace furnace body cooling body, a head tank, and a heat exchanger through a pipeline, and supplies and circulates cooling water, the blast furnace furnace body cooling body is forcibly cooled.
Cooling body B that can switch between forced cooling and slow cooling
Separate the cooling body A, circulating pump A, cooling
The body A, the head tank, and the heat exchanger are circulated through a pipeline.
To form a whole circulation system.
Circulate the pump outlet valve, cooling body B and circulation pump B
Independent circulation system by forming as a ring system, and overall circulation system
Pipe that sends cooling water from the heat exchanger to the cooling body A
Cooling water is sent from the circulation pump outlet valve of the circulation system to the cooling body B.
Pipes are connected via a water supply amount adjustment valve.
In addition, the piping from the cooling body B to the outlet side communicates with the head tank
A water distribution pipe is provided to supply water during forced cooling.
Open the flow control valve, and throttle the water supply control valve during slow cooling.
The amount of cooling water in the independent circulation system
The above problem was solved by a blast furnace furnace cooling device .
【０００８】[0008]
【作用】循環ポンプ、高炉炉体冷却体、ヘッドタンク、
熱交換器（クーラー）を管路により循環系として形成
し、冷却水を供給、循環する高炉炉体冷却装置におい
て、冷却水はクーラーにより冷却され、循環ポンプで循
環され、高炉炉体冷却体に供給されて高炉炉体冷却体を
冷却した後、ヘッドタンクを経由してクーラーに戻る構
成となっている。この設備では、クーラー出口の冷却水
温度を調整して、緩冷却調整を行うことは可能である
が、系全体を一緒に調整することができない。そこで本
発明では、高炉炉体冷却体を全体循環系と独立循環系と
に分離し、並列的に形成し、独立循環系に循環ポンプお
よび全体循環系から冷却水を補給する給水管を備え、該
給水管に給水量調整弁を備えたことを特徴とする高炉炉
体冷却装置にあり、本設備においては、例えば全体循環
系が冷純水循環による強冷却の状態にあるとき、並列に
形成した独立循環系に冷却水を補給する給水量調整弁を
絞って独立循環系へ流入する冷純水量を減少させること
によって、独立循環系内の水は高炉炉体冷却体からの熱
を得て温度を上昇させる。独立循環系内の循環ポンプ
は、温度が上昇した水を独立循環系内に循環させるが、
独立循環系内に流入された冷純水量は独立循環系から押
し出され、並列に形成した全体系に戻る。このような作
用によって、一般にステーブ冷純水強制循環冷却システ
ムとして実用化されている高炉炉体冷却設備システムの
中で、一部の、特に緩冷却調整の必要な部分に対して、
低コストな緩冷却調整装置を実現化することができる。[Function] Circulating pump, blast furnace cooling body, head tank,
In a blast furnace furnace cooling device that forms a heat exchanger (cooler) as a circulation system through a pipeline, supplies and circulates cooling water, the cooling water is cooled by a cooler, circulated by a circulation pump, and cooled by a blast furnace furnace body. After being supplied and cooling the blast furnace body cooling body, it is configured to return to a cooler via a head tank. In this equipment, it is possible to adjust the cooling water temperature at the cooler outlet to perform slow cooling adjustment, but it is not possible to adjust the whole system together. Therefore, in the present invention, the blast furnace furnace cooling body is separated into a whole circulation system and an independent circulation system, formed in parallel, and provided with a circulation pump in the independent circulation system and a water supply pipe for supplying cooling water from the whole circulation system, The blast furnace furnace body cooling device is characterized in that the water supply pipe is provided with a water supply amount adjustment valve, and in this equipment, for example, when the whole circulation system is in a state of strong cooling by cold pure water circulation, it is formed in parallel. The water in the independent circulation system obtains heat from the blast furnace body cooling body by reducing the amount of cold pure water flowing into the independent circulation system by squeezing the water supply adjustment valve that supplies cooling water to the independent circulation system. Increase the temperature. The circulation pump in the independent circulation system circulates the water with the increased temperature into the independent circulation system,
The amount of cold pure water flowing into the independent circulation system is pushed out of the independent circulation system and returns to the whole system formed in parallel. By such an action, in the blast furnace furnace body cooling equipment system which is generally put into practical use as a stave cold pure water forced circulation cooling system, for a part, particularly for a part requiring slow cooling adjustment,
A low-cost slow cooling adjustment device can be realized.
【０００９】[0009]
【実施例】以下本発明の一実施例を図面により詳細に説
明する。図１は本発明の一実施例を示す高炉炉体冷却装
置の概略のフローシートである。図１に示すフローシー
トは、循環ポンプ１、ヘッドタンク２、熱交換器（クー
ラー）３と管路４により形成され、高炉炉体冷却体であ
るステーブクーラー５に冷却水を供給、循環する。本設
備において、高炉炉体冷却体の一部である炉底冷却装置
６と炉口水冷装置７を独立循環系としてステーブクーラ
ー全体系と並列に形成し、各独立循環系に循環ポンプ８
ａ、８ｂおよび循環ポンプ出口弁１２ａ、１２ｂ、さら
に全体系から独立循環系に冷却水を補給する給水管９
ａ、９ｂを備え、給水管に補給水量調整弁１０ａ、１０
ｂをそれぞれ備え、緩冷却調整装置を構成した。また、
独立循環系に循環水水温を測定する温度計１１ａ、１１
ｂを設置し、温度計と給水量調整弁を連結して循環水水
温を自動調整するシステムを形成した。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic flow sheet of a blast furnace furnace body cooling apparatus showing one embodiment of the present invention. The flow sheet shown in FIG. 1 is formed by a circulation pump 1, a head tank 2, a heat exchanger (cooler) 3 and a pipeline 4, and supplies and circulates cooling water to a stave cooler 5, which is a blast furnace furnace cooling body. In this facility, the furnace bottom cooling device 6 and the furnace port water cooling device 7 that are part of the blast furnace furnace body cooling body are formed as independent circulation systems in parallel with the entire stave cooler system, and a circulation pump 8 is provided in each independent circulation system.
a, 8b and circulating pump outlet valves 12a, 12b, and a water supply pipe 9 for supplying cooling water from the whole system to the independent circulating system
a, 9b, and the supply pipe is provided with a replenishing water amount adjusting valve 10a, 10b.
b to form a slow cooling adjustment device. Also,
Thermometers 11a and 11 for measuring circulating water temperature in an independent circulation system
b, and a system for automatically adjusting the circulating water temperature by connecting a thermometer and a water supply amount adjustment valve was formed.
【００１０】本設備において、全体系を強冷却する場合
は循環ポンプ８ａ、８ｂは停止させ、循環ポンプ出口１
２ａ、１２ｂは閉止とし、給水量調整弁１０ａ、１０ｂ
は全開として全体系への循環水給水温度は、通常３０℃
で運転する。炉底冷却装置６または炉口水冷装置７を緩
冷却する場合は、緩冷却する系の循環ポンプ８を運転
し、循環ポンプ出口弁１２を開とする。給水量調整弁１
０は、循環水温度計と給水量調整弁を連結して循環水水
温を自動調整するシステムにより水温を設定値に自動調
整させる自動運転とする。In this equipment, when the entire system is to be strongly cooled, the circulation pumps 8a and 8b are stopped, and the circulation pump outlet 1
2a and 12b are closed, and the water supply amount adjustment valves 10a and 10b
Is fully open and the circulating water supply temperature to the whole system is usually 30 ° C.
Drive with When slowly cooling the furnace bottom cooling device 6 or the furnace port water cooling device 7, the circulation pump 8 of the system for slow cooling is operated and the circulation pump outlet valve 12 is opened. Water supply adjustment valve 1
0 is an automatic operation in which a circulating water thermometer is connected to a water supply amount adjusting valve to automatically adjust the circulating water temperature to a set value by a system for automatically adjusting the circulating water temperature.
【００１１】独立循環系に設置する循環ポンプの能力
は、管内に空気又は蒸気を滞留させないために必要な循
環水流速約０．５ｍ／ｓを与えられるものとした。ま
た、独立循環系に冷却水を補給する給水量調整弁の能力
は、独立循環系の炉体冷却体からの奪熱量を設定して、
独立循環系内の循環水水温を５０℃から９０℃まで調整
しうるものとした。本設備においては、ステーブクーラ
ー全体系への循環水給水温度は、通常３０℃で運転する
が、その状態を維持したまま、炉底冷却装置系と炉口水
冷装置系の循環水水温は、それぞれ５０℃から９０℃ま
で調整でき、この循環水水温調整によって炉口水冷装置
からの奪熱量を３０％程度調整できた。なお、本発明は
独立循環系として、炉底冷却装置と炉口水冷装置に緩冷
却調整装置を適用した例を示したが、前記実施例にのみ
限定されるものではなく、本発明の要旨を逸脱しない限
り種々変更を加え得ることは勿論できる。The capacity of the circulating pump installed in the independent circulating system is such that a circulating water flow rate of about 0.5 m / s necessary for preventing air or steam from staying in the pipe is provided. In addition, the capacity of the water supply amount adjustment valve that replenishes cooling water to the independent circulation system is determined by setting the heat removal amount from the furnace cooling body of the independent circulation system,
The temperature of the circulating water in the independent circulation system could be adjusted from 50 ° C to 90 ° C. In this equipment, the circulating water supply temperature to the entire system of the stave cooler is usually operated at 30 ° C., while maintaining the state, the circulating water temperature of the furnace bottom cooling system and the furnace port water cooling system are respectively The temperature could be adjusted from 50 ° C. to 90 ° C., and the heat loss from the furnace port water cooling device could be adjusted by about 30% by adjusting the circulating water temperature. In addition, the present invention has shown an example in which the slow cooling adjustment device is applied to the furnace bottom cooling device and the furnace port water cooling device as an independent circulation system, but the present invention is not limited to only the above embodiment, and the gist of the present invention is described. Of course, various changes can be made without departing from the scope of the present invention.
【００１２】[0012]
【発明の効果】以上説明したように、本発明の緩冷却調
整装置によれば、（１）高炉炉体の熱負荷に応じて冷却
の強さの調整を行うことにより、高炉操業を安定させ、
高炉の生産量調整を容易にできた。（２）全体系への循
環水給水温度を低レベルに押さえた運転を維持したま
ま、複数の独立循環系内の循環水水温を調整し、緩冷却
調整を実現できた。（３）従来技術の、ステーブ冷純水
冷却システムの形態を維持したまま、複数の独立循環系
に循環ポンプと給水量調整弁を追加するだけで、低コス
トの緩冷却調整を実現できた。（４）高炉の必要部分
に、緩冷却調整を適用することにより、操業安定、操業
コスト低減、設備長寿命化等を実現できた。As described above, according to the slow cooling adjusting apparatus of the present invention, (1) the blast furnace operation is stabilized by adjusting the cooling intensity according to the heat load of the blast furnace body. ,
Adjustment of blast furnace production was made easy. (2) The circulating water temperature in the plurality of independent circulation systems was adjusted while maintaining the operation in which the temperature of the circulating water supply to the entire system was kept at a low level, and slow cooling adjustment was realized. (3) Low cost slow cooling adjustment was realized only by adding a circulation pump and a water supply amount adjusting valve to a plurality of independent circulation systems while maintaining the configuration of the conventional stave cold pure water cooling system. (4) By applying slow cooling adjustment to the necessary parts of the blast furnace, it was possible to realize stable operation, reduced operation costs, and a longer equipment life.
【図１】本発明に係る高炉炉体冷却装置の概略のフロー
シートFIG. 1 is a schematic flow sheet of a blast furnace furnace body cooling apparatus according to the present invention.
【図２】従来技術（その１）に係る高炉炉体冷却装置の
概略のフローシートFIG. 2 is a schematic flow sheet of a blast furnace furnace cooling device according to the related art (part 1).
【図３】従来技術（その２）に係る高炉炉体冷却装置の
概略のフローシートFIG. 3 is a schematic flow sheet of a blast furnace furnace cooling device according to the related art (part 2).
１ 循環ポンプ ２ ヘッドタンク ３ 熱交換器（クーラー） ４ 管路 ５ ステーブクーラー ６ 炉底冷却装置 ７ 炉口水冷装置 ８ａ、８ｂ 循環ポンプ ９ａ、９ｂ 給水管 １０ａ、１０ｂ 給水量調整弁 １１ａ、１１ｂ 温度計 １２ａ、１２ｂ 循環ポンプ出口弁 １３ 脱気器 １４ ヘッドタンク １５ 下降管 １６ クーラー １７ ポンプ １８ 送水管ヘッダー １９ ステーブ群 ２０ 戻管ヘッダー ２１ 戻管 ２２ 炉ライニング ２３ 高炉 Ａ，Ｃ，Ｄ 冷却系 Ｃ１，Ｄ１ 冷媒循環経路 Ｃ２，Ｄ２ バイパス管 Ｃ３，Ｄ３ クーラー Ｃ６，Ｄ６ 遮断弁 Ｃ７，Ｄ７，Ｃ８，Ｄ８ バイパス弁 DESCRIPTION OF SYMBOLS 1 Circulation pump 2 Head tank 3 Heat exchanger (cooler) 4 Pipe line 5 Stave cooler 6 Furnace bottom cooling device 7 Furnace opening water cooling device 8a, 8b Circulation pump 9a, 9b Water supply pipe 10a, 10b Water supply amount adjustment valve 11a, 11b Temperature Total 12a, 12b Circulation pump outlet valve 13 Deaerator 14 Head tank 15 Downcomer 16 Cooler 17 Pump 18 Water supply pipe header 19 Stave group 20 Return pipe header 21 Return pipe 22 Furnace lining 23 Blast furnace A, C, D Cooling system C1, D1 Refrigerant circulation path C2, D2 Bypass pipe C3, D3 Cooler C6, D6 Shutoff valve C7, D7, C8, D8 Bypass valve
フロントページの続き (72)発明者 高尾 宏幸 福岡県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 (56)参考文献 特開 昭56−51508（ＪＰ，Ａ) 実開 昭54−107602（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) C21B 7/10 Continuation of the front page (72) Inventor Hiroyuki Takao 46-59 Ohara Nakahara, Tobata-ku, Kitakyushu-shi, Fukuoka Nippon Steel Corporation Machinery & Plant Business Department (56) References JP-A-56-51508 (JP, A) 54-107602 (JP, U) (58) Field surveyed (Int. Cl. 7 , DB name) C21B 7/10
Claims (1)
ンク、熱交換機を管路により循環系として形成し、冷却
水を供給、循環する高炉炉体冷却装置において、高炉炉
体冷却体を強制冷却用冷却体Ａと強制冷却と緩冷却との
切り替えが可能な冷却体Ｂに分離し、前記冷却体Ａにつ
いては、循環ポンプＡ、冷却体Ａ、ヘッドタンク、熱交
換機を管路により循環系として形成して全体循環系と
し、冷却体Ｂについては、循環ポンプ出口弁、冷却体
Ｂ、循環ポンプＢを管路により循環系として形成して独
立循環系とし、かつ、全体循環系の熱交換機から冷却体
Ａまで冷却水を送る管路と、独立循環系の循環ポンプ出
口弁から冷却体Ｂまで冷却水を送る管路とが、給水量調
整弁を介して接続されるとともに、冷却体Ｂから出側の
配管には、ヘッドタンクに連通する配水管が設けられて
おり、強制冷却時には前記給水量調節弁を開き、緩冷却
時には、前記給水量調節弁を絞って独立循環系の冷却水
量を調節することを特徴とする高炉炉体冷却装置。 1. A blast furnace furnace cooling device for forming a circulation pump, a blast furnace furnace cooling body, a head tank, and a heat exchanger as a circulation system through a pipeline, and supplying and circulating cooling water, forcing the blast furnace furnace body cooling body. Cooling body A for forced cooling and slow cooling
Separate into a switchable cooling body B,
The circulation pump A, cooling body A, head tank, heat exchange
The exchange is formed as a circulatory system by pipes, and
For the cooling body B, the circulation pump outlet valve, the cooling body
B. The circulation pump B is formed as a circulation
A cooling system from a heat exchanger in a vertical circulation system and a general circulation system
A pipe for sending cooling water to A and a circulation pump for independent circulation
The pipe that sends the cooling water from the mouth valve to the cooling body B adjusts the water supply
It is connected through a valve and is connected to the outlet side from the cooling body B.
The pipe is provided with a water pipe that communicates with the head tank.
During forced cooling, open the water supply amount control valve and slowly cool
Sometimes, the water supply control valve is squeezed to cool the independent circulation system.
An apparatus for cooling a blast furnace body characterized by adjusting the amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05135124A JP3083678B2 (en) | 1993-05-14 | 1993-05-14 | Blast furnace furnace cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05135124A JP3083678B2 (en) | 1993-05-14 | 1993-05-14 | Blast furnace furnace cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06322418A JPH06322418A (en) | 1994-11-22 |
| JP3083678B2 true JP3083678B2 (en) | 2000-09-04 |
Family
ID=15144387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05135124A Expired - Lifetime JP3083678B2 (en) | 1993-05-14 | 1993-05-14 | Blast furnace furnace cooling system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3083678B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100490739B1 (en) * | 2000-12-19 | 2005-05-24 | 주식회사 포스코 | Temperature control apparatus for throat stave cooling circulation water |
| KR100435492B1 (en) * | 2001-10-19 | 2004-06-10 | 주식회사 포스코 | Method for Cooling Blast Furance |
| KR100851221B1 (en) * | 2002-06-04 | 2008-08-07 | 주식회사 포스코 | Stave temperature control apparatus in blast furnace |
| KR100905587B1 (en) * | 2002-10-15 | 2009-07-02 | 주식회사 포스코 | Method and apparatus for automatically controlling heat load of blast furnace |
| JP5422913B2 (en) * | 2008-05-12 | 2014-02-19 | Ｊｆｅスチール株式会社 | Blast furnace furnace cooling system |
| CN109295272A (en) * | 2017-07-25 | 2019-02-01 | 宝山钢铁股份有限公司 | Blast furnace sealed cooling system temperature control adjusting method |
| JP7440717B2 (en) * | 2019-11-28 | 2024-02-29 | 日本製鉄株式会社 | Blast furnace cooling equipment and blast furnace cooling method |
| CN115232897B (en) * | 2022-06-28 | 2023-05-23 | 武汉钢铁有限公司 | Method for adjusting water quantity of blast furnace soft water closed circulation cooling system |
-
1993
- 1993-05-14 JP JP05135124A patent/JP3083678B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06322418A (en) | 1994-11-22 |
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