Georgia-pacific Corporation

Subrata Sen

Michael Eugene Carroll

Paul Topping

Johannes A Kroon

Rudy F M J Parton

Pierre L Woestenborghs

Methods and systems are provided for improved liquefaction of a lignocellulosic biomass. The methods include reacting a lignocellulosic biomass slurry at mild conditions for a short period to produce a first reaction mixture having a reduced viscosity as compared to the lignocellulosic biomass slurry and that is substantially free of levulinic acid and hydroxymethylfurfural. The methods further include separating the first reaction mixture into a solid fraction and a liquid fraction, the solid fraction having a majority of lignin from the lignocellulosic biomass slurry and the liquid fraction having a majority of hemicellulose and greater than about 30% by weight of cellulose from the lignocellulosic biomass slurry. The method advantageously prevents or eliminates the formation of tar and/or char.

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Kennesaw, GA, United States of America

Subrata Sen