FLASH COOLING FOR QUENCHING A HYDROLYSIS REACTION OF A BIOMASS FEEDSTOCK
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United States of America Patent
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Oct 15, 2015
app pub date -
Nov 8, 2013
filing date -
Nov 8, 2012
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Abstract
The present invention describes a process for quenching a hydrothermal, dilute acid hydrolysis reaction of a biomass feedstock, wherein degradation of an aqueous monomer and/or oligomer sugar mixture is slowed down or stopped by flash cooling of the aqueous monomer and/or oligomer sugar mixture, and wherein the flash cooling ensures that a fraction of dissolved and volatile degradation byproducts are removed by a forming vapor stream, and wherein a lignin component, if present, is solidified into a structure with good de-watering characteristics, allowing for subsequent removal of the lignin component by separation, said process resulting in a hydrolyzed solution of sugar monomers and/or oligomers.
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