Process for carrying out pre-hydrolysis of a biomass

Details Process for carrying out pre-hydrolysis of a biomass Process for carrying out pre-hydrolysis of a biomass

2007-07-03

2007-07-03

Brunsman, David M. (Department: 1755)

Sugar, starch, and carbohydrates

Processes

Carbohydrate manufacture and refining

C127S001000

Reexamination Certificate

active

11079313

ABSTRACT:
A process wherein biomass is compacted at 300 kg/m3by a helical feeder, degassed, flooded, heated, stirred, and pre-hydrolyzed. The sugar being recovered at a first washing within the reactor with values higher than 90%. The control of the process enables one to produce cellulignin with a high specific surface, 2 m2/g (measured by BET), compared with the value of 0.4 m2/g of non-hydrolyzed biomass, maintain crystallinity of the cellulose fibers, aiming at grinding it into fine particles (f<250 mm), globulizing the lignin, exposing the cellulose to attacks by micro-organisms from cud of ruminants, fungi, bacteria or enzymes in microbiological or enzymatic fermentation.

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