Method for obtaining superior yields of accessible cellulose...

Details Method for obtaining superior yields of accessible cellulose... Method for obtaining superior yields of accessible cellulose...

D - Textiles, Paper

21

C

9/2, 99/24

D21C 3/00 (2006.01) A23K 1/12 (2006.01) C12N 1/22 (2006.01) D21B 1/12 (2006.01) D21C 1/00 (2006.01) D21C 5/00 (2006.01)

Patent

CA 1163058

ABSTRACT This invention comprises a method for increasing the accessibility of cellulose in lignocellulosic materials to chemical or biochemical reagents. The material is steam cooked for a predetermined time, then rapidly depressurized. A venting sequence is used to remove volatiles from the reactor. Optimal cooking times for normal and acid catalyzed cooking are disclosed, according to the discovery of a novel set of governing equations, wherein optimum cooking times can be determined as a time integration of reactor pressure.

381485

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