Water-containing solid fuel drying apparatus and drying method

Abstract

A water-containing solid fuel drying apparatus that can efficiently dry with low energy consumption by effectively utilizing sensible heat and latent heat of a heating medium for drying, etc. is provided. A drying apparatus () that dries water-containing solid fuel includes a dryer () that injects scavenging gas into the interior of a drying vessel () in which a heat transfer pipe () is disposed; a dust collector () that removes microparticles from microparticle-containing mixed gaseous fluid that has flowed out of the drying vessel (); a compressor () that compresses vapor-containing mixed gaseous fluid; a vapor heat exchanger () that preheats low-pressure mixed gaseous fluid with high-pressure mixed gaseous fluid compressed at the compressor (); and a gas-liquid separator (), in which the high-pressure mixed gaseous fluid is employed as drying gas that radiates heat by passing through the heat transfer pipe (), that performs gas-liquid separation of water-containing scavenging gas that has flowed out of the heat transfer pipe () while containing condensed water of vapor generated due to heat radiation, wherein the water-containing solid fuel is dried by heating the water-containing solid fuel in the drying vessel () utilizing latent heat and sensible heat of the mixed gaseous fluid.