Enzymatic hydrolysis of cellulose

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United States of America Patent

PATENT NO 9193982
APP PUB NO 20130217074A1
SERIAL NO

13704968

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Abstract

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The present invention relates to a continuous process for the enzymatic hydrolysis of cellulosic biomass and to an apparatus for conducting said process. According to the present invention, a steady state is achieved in a reactor in regard to the hydrolysis reaction. Therein, cellulosic biomass of a high total solids content (preferably 10% or higher, further preferably between 15 and 30%) is continually added to said reactor, while at least partially hydrolyzed cellulosic biomass is continually removed from said reactor. The steady state is adjusted, i.e. the amount of cellulosic biomass added and the amount of at least partially hydrolyzed cellulosic biomass removed is adjusted, so that the retention time of a given portion of added cellulosic biomass in the reactor is longer than its “liquefaction time”, i.e. the time period required to transform a solid slurry into a pumpable liquid during hydrolysis, i.e. the time required to lower the viscosity of the slurry to a value, which is acceptable for further processing.

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Patent Owner(s)

Patent OwnerAddress
BORREGAARD ASHJALMAR WESSELS VEI 8 SARPSBORG N-1721

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Delin, Lennart Skaerholmen, SE 2 21
Froelander, Anders Sarpsborg, NO 2 37
Hals, Kristin Sarpsborg, NO 1 20
Johansson, Mats H Norrköping, SE 2 23
Kloeften, Anne Mari Sarpsborg, NO 1 18
Lersch, Martin Sarpsborg, NO 3 37
Roedsrud, Gudbrand Sarpsborg, NO 2 37
Sjoede, Anders Sarpsborg, NO 2 37

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