| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pressure control method for top gas of blast furnace, capable of controlling the pressure of a top gas with higher accuracy compared to conventional feedback control. <P>SOLUTION: In addition to the pressure control of the top gas based on a comparison result of a measurement value of the top gas pressure of a blast furnace and a target value of the top gas pressure set beforehand, a variation width of the top gas pressure according to a raw material charged into the blast furnace and the variation width of the top gas pressure generated due to a difference between a pressure inside a raw material bunker and a top gas pressure when charging the raw material from the raw material bunker storing the raw material in order to charge the raw material into the blast furnace are predicted, and the pressure control based on the predicted values is performed. <P>COPYRIGHT: (C)2013,JPO&INPIT |
