Title: Process for pre-hydrolysis of biomass
Application Number: 200510134049 Application Date: 2000.06.23
Publication Number: 1824379 Publication Date: 2006.08.30
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: B01J19/02,B01J19/28,C13K1/02
Applicant(s) Name: RM Materiais Refratarios LTDA Address:
Inventor(s) Name: Garcia Pinatti Daltro
Attorney & Agent: liu weisheng wang jingchao
Abstract:
     A process for pre-hydrolysis of biomass. In the process of this invention, biomass is compacted at 300 kg/m3 by a helical feeder, degased, flooded, heated, stirred, pre-hydrolyzed, the sugar being recovered at a first washing within the reactor with values higher than 90 %. The low liquid/solid ratio = 2 enables one to achieve sugar content of 10 Brix in the pre-hydrolysate and a consumption of 6 % of the energy contained in the processed biomass. The pre-hydrolysate is constituted by solutions of xylose and others and is intended for the production of furfural, alcohol and xylitol. 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 microorganisms from cud of ruminants, fungi, bacteria or enzymes in microbiological or enzymatic fermentation. The catalytic combustion due to the large specific surface results in a new fuel when produced with filtered water or deionized water.
Time: 9
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