SYSTEM FOR DRYING LIGNITE AND METHOD FOR DRYING LIGNITE

摘要

A system for drying lignite, according to the present invention, comprises: a grinder for grinding low rank lignite containing a large amount of water; a drier for drying the ground lignite by means of high-temperature steam and discharging the same; a condensation dust collection evaporator for condensing, through heat exchange with water, the saturated steam to be evaporated and discharged during the drying of the lignite in the drier, and collecting the coal dust, having been generated during the drying of the lignite, in an aqueous solution containing condensed saturated steam, and discharging the same; and an evaporated steam recompressor compressing the steam evaporated by the condensation dust collection evaporator so as to supply the same to the drier.