Methods and systems for processing lignin during hydrothermal digestion of cellulosic biomass solids

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United States of America Patent

PATENT NO 9580602
APP PUB NO 20140117275A1
SERIAL NO

14067250

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Digestion of cellulosic biomass solids may be complicated by lignin release therefrom, which can produce a highly viscous phenolics liquid phase comprising lignin polymer. Methods for digesting cellulosic biomass solids may comprise: providing cellulosic biomass solids in the presence of a digestion solvent, molecular hydrogen, and a slurry catalyst capable of activating molecular hydrogen; at least partially converting the cellulosic biomass solids into a phenolics liquid phase comprising lignin, an aqueous phase comprising an alcoholic component derived from the cellulosic biomass solids, and an optional light organics phase; wherein at least a portion of the slurry catalyst accumulates in the phenolics liquid phase as it forms; and reducing the viscosity of the phenolics liquid phase.

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Patent Owner(s)

  • SHELL OIL COMPANY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chheda, Juben Nemchand Houston, US 62 529
Johnson, Kimberly Ann Richmond, US 31 329
Komplin, Glenn Charles Katy, US 43 366
Powell, Joseph Broun Houston, US 149 1397

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