To improve the drying efficiency of a fluidized bed drying device.
The fluidized bed drying device is provided with a drying container 101 in a hollow shape; a coal feed opening 102 for feeding raw coal to one end side of the drying container 101; a dry coal discharge opening 103 for discharging dry coal obtained by heating and drying the raw coal from the other end side of the drying container 101; a fluidized gas supply part 104 which supplies fluidized gas to a lower part of the drying container 101 to form a fluidized bed S with the raw coal; a gas discharge opening 105 which discharges fluidized gas and generated steam from above the raw coal feed opening 102 on the one end side of the drying container 101; a heat transfer tube 106 which heats the raw coal of the fluidized bed S; and a gas injection device 123 which is provided below the raw coal feed opening 102 and can inject inert gas into the drying container 101.
TORII ISAO
ARIMA KENICHI
Jun Takamura