FLUIDIZED BED FILTERING DEVICE

摘要

The present invention relates to a fluidized bed filtering 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 filter the object. The apparatus for filtering a fluidized bed of the present invention comprises a particle injection unit, a filtering unit, a hot air supply unit, a dust-collecting unit, a filter unit, a heat exchange unit and a compression unit. The filtering 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 filtering unit also has a lower space in which multiple lower partitions are arranged in a vertical direction on the bottom of the filtering 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.