FLUIDIZED BED DRYING DEVICE

摘要

A drying furnace (5) that forms a fluidized bed (3) internally by using a fluidized gas to force lignite to flow is provided. The drying furnace (5) is divided into a first drying chamber (21) that carries out an initial drying of lignite, and a second drying chamber (22) that carries out a final drying of the lignite. In the first drying chamber (21), the lignite that is supplied is dried while undergoing completely mixed flow, and in the second drying chamber (22), the lignite that is supplied from the first drying chamber is dried while undergoing plug flow.