Progressing batch hydrolysis process

Patent · Tue Dec 31 23:00:00 EST 1985

OSTI ID:866004

Wright, John D ^[1]

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1. Denver, CO

A progressive batch hydrolysis process for producing sugar from a lignocellulosic feedstock, comprising passing a stream of dilute acid serially through a plurality of percolation hydrolysis reactors charged with said feedstock, at a flow rate, temperature and pressure sufficient to substantially convert all the cellulose component of the feedstock to glucose; cooling said dilute acid stream containing glucose, after exiting the last percolation hydrolysis reactor, then feeding said dilute acid stream serially through a plurality of prehydrolysis 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; and cooling the dilute acid stream containing glucose after it exits the last prehydrolysis reactor.

• Research Organization: MIDWEST RESEARCH INSTITUTE
• DOE Contract Number: AC02-83CH10093
• Assignee: United States of America as represented by Department of Energy (Washington, DC)
• Patent Number(s): US 4615742
• OSTI ID: 866004
• Country of Publication: United States
• Language: English

Related Subjects

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acid
batch
batch hydrolysis
cellulose
charged
component
comprising
containing
convert
cooling
dilute
dilute acid
exiting
exits
feeding
feedstock
flow
flow rate
glucose
hemicellulose
hydrolysis
hydrolysis process
lignocellulosic
passing
percolation
plurality
prehydrolysis
pressure
pressure sufficient
process
producing
progressing
progressive
rate
reactor
reactors
serially
sic feed
stream
stream containing
substantially
sufficient
sugar
temperature