BLAST FURNACE MONITORING DEVICE, BLAST FURNACE MONITORING METHOD, AND BLAST FURNACE MONITORING PROGRAM

To provide a blast furnace monitoring device capable of appropriately determining the presence or absence of an operational abnormality in a blast furnace.SOLUTION: A blast furnace monitoring device 1 includes a stave temperature acquisition section 21, a temperature variation calculation section 22, a standard deviation calculation section 23, a first determination section 24, a second determination section 25, and an alarm signal output section 26. The stave temperature acquisition section acquires a plurality of stave temperatures at predetermined time intervals for a plurality of stave coolers arranged on a furnace wall of the blast furnace. The temperature variation calculation section calculates a plurality of temperature variations which are temperature variations in the predetermined time interval at predetermined positions in the furnace wall of the blast furnace from the plurality of stave temperatures. The standard deviation calculation section calculates a standard deviation of the plurality of temperature variations. The first determination section determines whether the standard deviation is equal to or greater than a first threshold value or not. The second determination section determines whether the standard deviation is equal to or less than a second threshold value which is smaller than the first threshold value or not. When it is determined that the standard deviation is equal to or greater than the first threshold value and that the standard deviation is equal to or smaller than the second threshold value, the alarm signal output section outputs an alarm signal.SELECTED DRAWING: Figure 1 【課題】高炉における操業異常の有無を適切に判断できる高炉監視装置を提供する。【解決手段】高炉監視装置１は、高炉の炉壁に配置される複数のステーブクーラについて複数のステーブ温度を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区間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を演算する標準偏差演算部２３と、標準偏差が第１しきい値以上であるか否かを判定する第１判定部２４と、標準偏差が第１しきい値より小さい第２しきい値以下であるか否かを判定する第２判定部２５と、標準偏差が第１しきい値以上であると判定されたとき、及び標準偏差が第２しきい値以下であると判定されたときに、警報信号を出力する警報信号出力部２６とを有する。【選択図】図１