Biomass processing system, saccharide solution production method using biomass feedstock, alcohol production method

摘要

A biomass processing system includes: a hydrolysis processing unit that decomposes, under a high-temperature/high-pressure condition, biomass feedstock in a processing tank having a gas-liquid interface, and removes a lignin component and a hemicellulose component; a biomass solid content discharge unit that discharges a biomass solid content 20 which is a hot water insoluble element; a slurrying vessel that subjects the discharged biomass solid content to slurrying; and a hot water discharge liquid introducing line L2 that introduces, into the slurrying vessel 21, a hot water discharge liquid 16 including a biomass hot-water soluble element.

主权项

1. A biomass processing system comprising:
a hydrolysis processing unit that provides a first gas-liquid interface therein and comprises:
a biomass providing unit that supplies biomass feedstock containing cellulose, hemicellulose, and lignin;a supply inlet that supplies pressurized hot water;an apparatus main body that brings the biomass feedstock and the pressurized hot water into countercurrent contact so as to hydrolyze the biomass feedstock;an outlet from which a hot water discharge liquid containing a biomass hot-water soluble element dissolved in the pressurized hot water is discharged; anda biomass solid content outlet from which a biomass solid content is discharged, the biomass solid content containing a hot water insoluble element of the biomass feedstock; a biomass solid content discharge unit that discharges the biomass solid content processed by the hydrolysis processing unit; a slurrying vessel that is in communication with the biomass solid content discharge unit and that subjects the discharged biomass solid content to slurrying; and a discharge liquid introducing line that introduces, into the slurrying vessel, the hot water discharge liquid containing the biomass hot-water soluble element discharged from the hydrolysis processing unit, wherein the biomass solid content is mixed with the hot water discharge liquid to be made into a mixture slurry, wherein a filter that separates a solid content including a lignin component from the hot water discharge liquid is interposed in the discharge liquid introducing line, wherein the biomass processing system further comprises: a saccharide-concentrating apparatus that is provided downstream of the slurrying vessel, that performs enzymatic saccharification on the mixture slurry to produce a saccharide solution, and that separates water from the saccharide solution so as to concentrate the saccharide solution; a water return line that returns the water to the slurrying vessel; and an organism processing apparatus that is provided in the water return line and that performs organism processing on a reaction inhibition substance in the water.