BIOMASS FRACTIONATION PROCESSES, APPARATUS, AND PRODUCTS PRODUCED THEREFROM
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United States of America Patent
Stats
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N/A
Issued Date -
Jun 19, 2014
app pub date -
Nov 12, 2013
filing date -
Dec 19, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Aspects of the AVAP® and Green Power+® technologies may be integrated, as disclosed herein. The present invention, in some variations, couples a first step of steam or hot-water extraction of biomass, with fractionation of the resulting solids using sulfur dioxide (or other acid), an alcohol (or other solvent), and water. In other variations, a first step of fractionation with sulfur dioxide (or other acid), an alcohol (or other solvent), and water is followed by treatment with steam or hot water to reduce hemicellulose content of the final solids. Some embodiments provide cellulose materials with low lignin and low hemicellulose content. Such cellulose materials are useful for making glucose by hydrolysis, as a pulp product, or as purified cellulose for making cellulose derivatives.
First Claim
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