Patent ID: 9587217
Date: 2017-03-07
CPC Classifications: C12M,C13B,C13K

Claim:
1. An apparatus for producing saccharide solution that uses biomass as a feedstock comprising: a hydrothermal decomposition apparatus that brings a biomass feedstock including at least cellulose, hemicellulose, and lignin into countercurrent contact with pressurized hot water and performs a high temperature and high pressure treatment in a temperature range of 180° C. to 240° C. so as to produce a biomass treated liquid containing a pressurized hot water soluble component of the biomass feedstock; a cooling means that is provided downstream of the hydrothermal decomposition apparatus and cools the biomass treated liquid which has been discharged from the hydrothermal decomposition apparatus; an enzymatic saccharification tank that is provided downstream of the cooling means and saccharifies the cooled treated liquid with an enzyme so as to produce a saccharide solution; a saccharide solution purification means that is provided downstream of the enzymatic saccharification tank and removes a water-slightly soluble substance from the saccharide solution, the water-slightly soluble substance being a substance that is contained in the pressurized hot water soluble component, and solidified or colloidal due to the cooling; a dilution tank that is disposed downstream of the saccharide solution purification means and adds water thereto so as to dilute the saccharide solution from which the water-slightly soluble substance has been removed; a water separation unit that is provided with a reverse osmosis (RO) membrane and removes water from the diluted saccharide solution so as to obtain concentrated saccharide solution; a first measurement unit that measures both of a turbidity and a light absorbance of the saccharide solution from which the water-slightly soluble substance has been removed, wherein the saccharide solution purification means includes: a saccharide solution purification tank that is provided downstream of the enzymatic saccharification tank to receive and retain the saccharide solution taken from the enzymatic saccharification tank; a first circulation line that connects between a bottom portion of the saccharide solution purification tank and an upper portion of the saccharide solution purification tank to circulate the saccharide solution; a second circulation line that connects between the bottom portion of the saccharide solution purification tank and the upper portion of the saccharide solution purification tank to circulate the saccharide solution; a solid-liquid separation apparatus that is interposed in the first circulation line and removes the water-slightly soluble substance contained in the saccharide solution circulating in the first circulation line; a foreign substance removing unit that is interposed in the second circulation line and has a microfiltration (MF) membrane by which the water-slightly soluble substance circulating in the second circulation line is further removed and through which the saccharide solution from which the remaining water-slightly soluble substance is thus removed is passed.