| 摘要 |
PURPOSE:To ensure constant conveyance by detecting the pressure difference between at the sending portion of powders and at the inlet portion to a furnace and by controlling a gas flow, solid/gas ratio, and the pressure difference between both portions at constant values. CONSTITUTION:The compressed air introduced from a compressed air source 10 is guided into the flow portion 3 of a fluidized bed pressurized tank 1 in which powders such as pulverized coal are filled, then the powders are fluidized, are conveyed through a transport pipe 6, and are fed by pressure to a receiving unit 8 such as an inlet port of a blast furnace or a blast port of a converter. According to this constitution, pressures, solid/gas ratio, and flows at the flow portion, receiving portion, and other portions are detected and sent to the control unit 28 so that the flow is controlled by use of a bypass passage 14, etc. and the pulverized coal fed to the receiving unit can be controlled at a constant value. |
