| 摘要 |
PURPOSE:To economize the energy required for blasting by determining the optimum blast pressure at which the difference between the power consumption of a driving source of a blower in a set blast quantity and the quantity of the power recovered by a furnace top pressure turbine is minimized by using the performance curve, etc. of said turbine and controlling the driving source of the blower so that said blast pressure is obtd. CONSTITUTION:The highly pressurized air to be blown into a blast furnace 20 is generated by using a blower 16, and the energy of the furnace top gas discharged from the top of the furnace 20 is recovered by using a furnace top turbine 26, by which the blast furnace is operated. The optimum blast pressure at which the difference between the power consumption of the driving source for the blower in a set blast quantity and the quantity of the power recovered by the turbine 26 is minimized is determined by using the performance curve, etc. of the turbine 26. The driving source of the blower 16 is controlled with a control device 40 so that said optimum blast pressure is obtd. |
