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Title: Progressing batch hydrolysis process

A progressive batch hydrolysis process is disclosed for producing sugar from a lignocellulosic feedstock. It comprises passing a stream of dilute acid serially through a plurality of percolation hydrolysis reactors charged with feed stock, at a flow rate, temperature and pressure sufficient to substantially convert all the cellulose component of the feed stock to glucose. The cooled dilute acid stream containing glucose, after exiting the last percolation hydrolysis reactor, serially fed through a plurality of pre-hydrolysis percolation reactors, charged with said feedstock, at a flow rate, temperature and pressure sufficient to substantially convert all the hemicellulose component of said feedstock to glucose. The dilute acid stream containing glucose is cooled after it exits the last prehydrolysis reactor.
Authors:
Publication Date:
OSTI Identifier:
5331074
Report Number(s):
US A 6-690544
ON: DE85017754
DOE Contract Number:
AC02-83CH10093
Resource Type:
Patent
Research Org:
Solar Energy Research Inst., Golden, CO (USA)
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; CELLULOSE; ACID HYDROLYSIS; DESIGN; GLUCOSE; HEAT TREATMENTS; RECYCLING; ALDEHYDES; CARBOHYDRATES; CHEMICAL REACTIONS; DECOMPOSITION; HEXOSES; HYDROLYSIS; LYSIS; MONOSACCHARIDES; ORGANIC COMPOUNDS; POLYSACCHARIDES; SACCHARIDES; SOLVOLYSIS 090222* -- Alcohol Fuels-- Preparation from Wastes or Biomass-- (1976-1989); 140504 -- Solar Energy Conversion-- Biomass Production & Conversion-- (-1989)