DRYING SYSTEM AND ACTIVATION METHOD OF DRYING SYSTEM

PROBLEM TO BE SOLVED: To suppress deterioration of dust removal efficiency of a bag filer.SOLUTION: A drying system 100 configured to form a fluid bed of a hydrous solid and dry the hydrous solid, includes: a fluid bed furnace (first storage part 212) capable of forming the fluid bed of the hydrous solid; a raw material input part 110 configured to input the hydrous solid to the fluid bed furnace; a gas supply unit (first gas supply unit 220) configured to supply gas from a bottom surface of the fluid bed furnace; a bag filter 260 configured to filter gas discharged from the fluid bed furnace; a connecting pipe 250 connecting the fluid bed furnace and the bag filter 260; and a superheated steam supply unit 280 configured to supply superheated steam to the connection pipe 250.SELECTED DRAWING: Figure 1 【課題】バグフィルタの除塵効率の低下を抑制する。【解決手段】含水固形物の流動層を形成して含水固形物を乾燥させる乾燥システム１００は、含水固形物の流動層を形成可能な流動層炉（第１収容部２１２）と、流動層炉に含水固形物を投入する原料投入部１１０と、流動層炉の底面からガスを供給するガス供給部（第１ガス供給部２２０）と、流動層炉から排出されたガスを濾過するバグフィルタ２６０と、流動層炉と、バグフィルタ２６０とを接続する接続管２５０と、接続管２５０に過熱蒸気を供給する過熱蒸気供給部２８０と、を備える。【選択図】図１