CPC C12P 7/14 (2013.01) [C07H 1/08 (2013.01); C12P 19/02 (2013.01)] | 16 Claims |
1. A method for hydrolyzing lignocellulosic material, comprising:
flashing a lignocellulosic material in a flash drum to generate vapor;
feeding the lignocellulosic material into a recycling reactor at a feed rate;
adding at least one enzyme to the lignocellulosic material; and
recycling the lignocellulosic material and at least one enzyme through the recycling reactor at a recycle rate and a residence time to hydrolyze the lignocellulosic material to produce an amount of monomeric sugar in the lignocellulosic material,
wherein recycling comprises at least a portion of the lignocellulosic material and at least one enzyme exiting the recycling reactor and being recirculated back into the recycling reactor, and
wherein recycling the lignocellulosic material and the at least one enzyme reduces a viscosity of fresh lignocellulosic material entering the recycling reactor, and
wherein partially saccharified lignocellulosic material exiting the recycling reactor has a viscosity of 250 centipoise (cp) to 3000 cp.
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