FLUIDIZED BED DRYING APPARATUS

摘要

The present invention relates to a fluidized bed drying apparatus, which exposes very moist particles of an object to be dried, such as brown coal or the like, to gases having different temperature and flux conditions so as to dry the object. The apparatus for drying a fluidized bed of the present invention comprises a particle injection unit, a drying unit, a hot air supply unit, a dust-collecting unit, a filter unit, a heat exchange unit and a compression unit. The drying unit has an upper space in which multiple upper partitions are equidistantly arranged in a vertical direction such that the upper partitions are spaced apart from a porous plate. The drying unit also has a lower space in which multiple lower partitions are arranged in a vertical direction on the bottom of the drying unit such that the lower partitions penetrate through the porous plate, wherein the lower partitions are disposed at either side of each of the upper partitions. Channel spaces are defined by separating plates between the upper partitions and the lower partitions such that gases having different temperatures and fluxes are supplied to the respective channel spaces.