| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluidized-bed drying device which can enhance drying efficiency.SOLUTION: A drum 101 is divided in a moving direction of wetting fuel of a fluidized bed to form an inlet part drying chamber 111a, a middle part drying chamber 111b, and an outlet part drying chamber 111c of at least three or more ones, each inside the respective drying chambers includes heat exchanger tubes 106a, 106b, and 106c of three or more ones for heating the wetting fuel of the fluidized bed, the heat exchanger tube 106a inside the inlet part drying chamber 111a is more roughly arranged than the standard heat exchanger tube 106b of a middle part, and also the velocity of flow of fluidization vapor or fluidization gas into the inlet part drying chamber 111a is made fast, and the heat exchanger tube 106c inside the outlet part drying chamber 111c is more densely arranged than the standard heat exchanger tube, and also the velocity of flow of the fluidization vapor or fluidization gas into the outlet part drying chamber 111c is made fast. |
