Liquefaction of biomass at low pH
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United States of America Patent
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Oct 10, 2017
Grant Date -
Oct 30, 2014
app pub date -
Nov 8, 2012
filing date -
Nov 8, 2011
priority date (Note) -
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Abstract
The present invention relates to regulation of the p H of a liquefaction process. Presented is a method for treatment of a biomass feedstock wherein the biomass feedstock is subjected to liquefaction, at a p H of at most 4, by treatment with hot compressed liquid water (HCW) at subcritical and/or supercritical conditions to improve the conversion efficiency. The present invention is also directed to quenching of a liquefaction process according to above, preventing, minimizing or eliminating clogging and/or fouling of sticky biomass components in process equipment during processing as according to above, and to the use of additives in a biomass liquefaction process.
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