Process of producing xylose and dissolving pulp
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United States of America Patent
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Jun 30, 2015
Grant Date -
Aug 11, 2011
app pub date -
Oct 20, 2009
filing date -
Oct 21, 2008
priority date (Note) -
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Abstract
The present invention relates to a process for the production of xylose and dissolving pulp from xylan-containing biomass, such as hardwood. The invention is based on prehydrolysis of the xylan-containing biomass with SO2 in specified conditions, followed by chromatographic fractionation, nanofiltration or precipitation crystallization of the xylose-containing prehydrolyzate to obtain a xylose product having a xylose content of at least 55% on DS. The dissolving pulp obtained from the process can be used for example for the production of viscose.
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