一、前言从2001年4月开始,马鞍山钢铁股份有限公司“三万五”制氧机由于不明原因,进冷箱空气量从正常状态下的170000m~3/h 降至7月仅有14000m~3/h 左右,且空压机导叶已开至最大100%,无法对空气量进行调整,造成空分运行调整手段缺乏,塔内压力波动大,极易使塔内工况恶化,整个运行系统崩溃,操作人员的操作强度和保产压力都随之加大。随着夏季气温的 I. Introduction From April 2001, Maanshan Iron & Steel Co., Ltd. “35,000 ” oxygen machine due to unknown reasons, into the cold box air volume from the normal state of 170000m ~ 3 / h down to July only 14000m ~ 3 / h or so, and the compressor guide vane has been opened up to 100%, unable to adjust the amount of air, resulting in lack of air separation and operation adjustment means that the pressure fluctuations in the tower, the tower can easily deteriorate the working conditions, The collapse of the entire operating system, the operating strength of the operator and the pressure on the production have increased. With the summer temperatures