| 摘要 |
PURPOSE:To effectively prevent water content of coal from flowing to a pulverizing machine in a feeding device for supplying finely pulverized fuel through compressed gas feeding means to a blast furnace by providing a water collector and a drain unit in the bottom of a storage container of fuel such as coal before being pulverized. CONSTITUTION:In the captioned device provided in a blast furnace 15 coal in a storage container 11 is supplied via a supplying unit 12 to a pulverizing machine 14, finely pulverized coal obtained in the machine is conveyed via heated air fed through an air heater 16, air is then separated from the coal via a cyclone 17 and a bag type filter unit 27 and the coal is then conveyed to a storage tank 23. Subsequently, the coal in the tank 23 is supplied through supplying tanks 31A-31C, a feeding duct 33 and a distributor 29 to respective tuyeres 41. In this case, a water collector 12-1 is provided in the bottom of an enclosing frame L1 of the unit 12 at the lower portion of the container 11, one end of a U-shaped tube 12-2 is connected to the collector, the other end of the tube 12-2 is provided with a drain unit opened with the atmosphere at the position in height capable of maintaining the liquid level of the collector 12-1 at the prescribed level. |
