MONITORING DEVICE, MONITORING METHOD AND MONITORING PROGRAM

To provide a monitoring device, a monitoring method and a monitoring program that can suppress an increase in the ratio of reducing materials.SOLUTION: A monitoring device 1 has: a stave temperature acquisition unit 21 that acquires a plurality of stave temperatures for a plurality of stave coolers...

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Bibliographische Detailangaben
Hauptverfasser: MIYAOKA SHINJI, MATSUZAKI SHINROKU, NATSUI TAKUYA
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a monitoring device, a monitoring method and a monitoring program that can suppress an increase in the ratio of reducing materials.SOLUTION: A monitoring device 1 has: a stave temperature acquisition unit 21 that acquires a plurality of stave temperatures for a plurality of stave coolers arranged on a furnace wall of a blast furnace at regular time intervals including the period of suspension of the blast furnace; a temperature variation calculation unit 22 that calculates a plurality of temperature variations, which are the variations of temperatures at predetermined positions on the furnace wall of the blast furnace, at the predetermined time intervals, from the plurality of stave temperatures; a stave temperature variation index calculation unit 23 that calculates the stave temperature variation index, which is the standard deviation of the plurality of temperature variations; and an operation abnormality determination unit 24 that determines whether the stave temperature variation index is below a predetermined lower threshold. An initial value of the lower threshold is extracted from the stave temperature variation index during a wind resting period.SELECTED DRAWING: Figure 4 【課題】還元材比の増加を抑制可能な監視装置、監視方法及び監視プログラムを提供する。【解決手段】監視装置1は、高炉の炉壁に配置される複数のステーブクーラーについて複数のステーブ温度を、高炉の休風期間を含めて、一定の時間間隔毎に取得するステーブ温度取得部21と、複数のステーブ温度から、高炉の炉壁の所定の位置における温度の所定の時間間隔での変化量である複数の温度変化量を演算する温度変化量演算部22と、複数の温度変化量の標準偏差であるステーブ温度変動指数を演算するステーブ温度変動指数演算部23と、ステーブ温度変動指数が所定の下限しきい値以下であるか否かを判定する操業異常判定部24とを有し、下限しきい値の初期値は、休風期間におけるステーブ温度変動指数から抽出される。【選択図】図4