| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluidized bed drying facility and a gasification combined power generating system using coal capable of reducing drying costs.SOLUTION: The fluidized bed drying facility includes: a drying chamber body 102 having a partitioning wall 120 for partitioning a large portion thereof over the longitudinal direction, and moving wet coal (low-grade coal) 101 in a U shape while drying the same; a coal injection line Lfor injecting the wet low-grade coal 101 to a one end side of the U shape of the drying chamber body 102; a dried coal discharge line Lfor discharging dried coal 101B that has been dried from the other side of the U shape of the drying chamber body 102; a fluidized gas supply line Lfor forming a fluidized bed 111 along with the low-grade coal 101 by supplying fluidized gas 107A to a lower part of the drying chamber body 102; a gas discharge line Lfor discharging the fluidized gas and generated steam 104 from an upper part of the drying chamber body 102; a heating means for heating the low-grade coal 101 supplied into the fluidized bed 111; and a dried coal returning part 130 for returning a portion 101b of the dried coal 101B to the injection side of the wet low-grade coal 101. |
