Fluidized-bed drying device and fluidized-bed drying facility

When brown coal (101) that is an object to be dried to be supplied to a fluidized-bed drying device (102) is supplied, dry brown coal (108) is supplied by an introduction line (L 5 ) for introducing part of the dry brown coal (108) dried in a drying chamber into a supply hopper (120), thereby making it possible to produce the effect of suppressing the adhesion and agglomeration of powder in a powder supply system and an inlet portion of the fluidized-bed drying device (102) and improve the device operating rate of the fluidized-bed drying device (102). Further, it is possible to reduce purge facilities provided in a supply line in the prior art, simplify a supply system, and significantly reduce the purge operational cost.