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Title: Hydrolysis and fractionation of lignocellulosic biomass

Abstract

A multi-function process is described for the hydrolysis and fractionation of lignocellulosic biomass to separate hemicellulosic sugars from other biomass components such as extractives and proteins; a portion of the solubilized lignin; cellulose; glucose derived from cellulose; and insoluble lignin from said biomass comprising one or more of the following: optionally, as function 1, introducing a dilute acid of pH 1.0-5.0 into a continual shrinking bed reactor containing a lignocellulosic biomass material at a temperature of about 94 to about 160.degree. C. for a period of about 10 to about 120 minutes at a volumetric flow rate of about 1 to about 5 reactor volumes to effect solubilization of extractives, lignin, and protein by keeping the solid to liquid ratio constant throughout the solubilization process; as function 2, introducing a dilute acid of pH 1.0-5.0, either as virgin acid or an acidic stream from another function, into a continual shrinking bed reactor containing either fresh biomass or the partially fractionated lignocellulosic biomass material from function 1 at a temperature of about 94-220.degree. C. for a period of about 10 to about 60 minutes at a volumetric flow rate of about 1 to about 5 reactor volumes to effect solubilization ofmore » hemicellulosic sugars, semisoluble sugars and other compounds, and amorphous glucans by keeping the solid to liquid ratio constant throughout the solubilization process; as function 3, optionally, introducing a dilute acid of pH 1.0-5.0 either as virgin acid or an acidic stream from another function, into a continual shrinking bed reactor containing the partially fractionated lignocellulosic biomass material from function 2 at a temperature of about 180-280.degree. C. for a period of about 10 to about 60 minutes at a volumetric flow rate of 1 to about 5 reactor volumes to effect solubilization of cellulosic sugars by keeping the solid to liquid ratio constant throughout the solubilization process; and as function 4, optionally, introducing a dilute acid of pH 1.0-5.0 either as virgin acid or an acidic stream from another function, into a continual shrinking bed reactor containing the partially fractionated lignocellulosic biomass material from function 3 at a temperature of about 180-280.degree. C. for a period of about 10 to about 60 minutes at a volumetric flow rate of about 1 to about 5 reactor volumes to effect solubilization of cellulosic sugars by keeping the solid to liquid ratio constant throughout the solubilization process.« less

Inventors:
 [1];  [2];  [2];  [3]
  1. (Littleton, CO)
  2. (Denver, CO)
  3. (Lakewood, CO)
Issue Date:
Research Org.:
Midwest Research Institute
OSTI Identifier:
872843
Patent Number(s):
6022419
Assignee:
Midwest Research Institute (Kansas City, MO) NREL
DOE Contract Number:  
AC36-83CH10093
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
hydrolysis; fractionation; lignocellulosic; biomass; multi-function; process; described; separate; hemicellulosic; sugars; components; extractives; proteins; portion; solubilized; lignin; cellulose; glucose; derived; insoluble; comprising; following; optionally; function; introducing; dilute; acid; ph; 0-5; continual; shrinking; bed; reactor; containing; material; temperature; 94; 160; degree; period; 10; 120; minutes; volumetric; flow; rate; volumes; effect; solubilization; protein; keeping; solid; liquid; ratio; constant; throughout; virgin; acidic; stream; fresh; partially; fractionated; 94-220; 60; semisoluble; compounds; amorphous; glucans; 180-280; cellulosic; reactor containing; bed reactor; flow rate; dilute acid; volumetric flow; biomass material; lignocellulosic biomass; biomass components; biomass comprising; separate hemicellulosic; multi-function process; hemicellulosic sugars; cellulosic sugars; /127/435/999/

Citation Formats

Torget, Robert W., Padukone, Nandan, Hatzis, Christos, and Wyman, Charles E. Hydrolysis and fractionation of lignocellulosic biomass. United States: N. p., 2000. Web.
Torget, Robert W., Padukone, Nandan, Hatzis, Christos, & Wyman, Charles E. Hydrolysis and fractionation of lignocellulosic biomass. United States.
Torget, Robert W., Padukone, Nandan, Hatzis, Christos, and Wyman, Charles E. Sat . "Hydrolysis and fractionation of lignocellulosic biomass". United States. https://www.osti.gov/servlets/purl/872843.
@article{osti_872843,
title = {Hydrolysis and fractionation of lignocellulosic biomass},
author = {Torget, Robert W. and Padukone, Nandan and Hatzis, Christos and Wyman, Charles E.},
abstractNote = {A multi-function process is described for the hydrolysis and fractionation of lignocellulosic biomass to separate hemicellulosic sugars from other biomass components such as extractives and proteins; a portion of the solubilized lignin; cellulose; glucose derived from cellulose; and insoluble lignin from said biomass comprising one or more of the following: optionally, as function 1, introducing a dilute acid of pH 1.0-5.0 into a continual shrinking bed reactor containing a lignocellulosic biomass material at a temperature of about 94 to about 160.degree. C. for a period of about 10 to about 120 minutes at a volumetric flow rate of about 1 to about 5 reactor volumes to effect solubilization of extractives, lignin, and protein by keeping the solid to liquid ratio constant throughout the solubilization process; as function 2, introducing a dilute acid of pH 1.0-5.0, either as virgin acid or an acidic stream from another function, into a continual shrinking bed reactor containing either fresh biomass or the partially fractionated lignocellulosic biomass material from function 1 at a temperature of about 94-220.degree. C. for a period of about 10 to about 60 minutes at a volumetric flow rate of about 1 to about 5 reactor volumes to effect solubilization of hemicellulosic sugars, semisoluble sugars and other compounds, and amorphous glucans by keeping the solid to liquid ratio constant throughout the solubilization process; as function 3, optionally, introducing a dilute acid of pH 1.0-5.0 either as virgin acid or an acidic stream from another function, into a continual shrinking bed reactor containing the partially fractionated lignocellulosic biomass material from function 2 at a temperature of about 180-280.degree. C. for a period of about 10 to about 60 minutes at a volumetric flow rate of 1 to about 5 reactor volumes to effect solubilization of cellulosic sugars by keeping the solid to liquid ratio constant throughout the solubilization process; and as function 4, optionally, introducing a dilute acid of pH 1.0-5.0 either as virgin acid or an acidic stream from another function, into a continual shrinking bed reactor containing the partially fractionated lignocellulosic biomass material from function 3 at a temperature of about 180-280.degree. C. for a period of about 10 to about 60 minutes at a volumetric flow rate of about 1 to about 5 reactor volumes to effect solubilization of cellulosic sugars by keeping the solid to liquid ratio constant throughout the solubilization process.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}

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