Biomass hydrothermal decomposition system and saccharide-solution production method using biomass material

摘要

A biomass hydrothermal decomposition system includes a hydrothermal decomposition unit 17 that transports the fed biomass material from a lower side to an upper side in an apparatus body 13 by screw means 14, feeds pressurized hot water 15 from an upper side different from a feed position of the biomass material 11 into the apparatus body 13, which is pressurized hot water to be discharged, so as to separate a lignin component and a hemicellulose component from the biomass material; a biomass solid discharging unit 18 that discharges a biomass solid 20 from the upper side of the apparatus body 13; and a slurrying vessel 21 communicating with the biomass solid discharging unit 18, into which water 19 is injected and the discharged biomass solid 20 is added to obtain a slurried biomass solid are provided.