C - Chemistry – Metallurgy – 13 – K
Patent
C - Chemistry, Metallurgy
13
K
260/232
C13K 1/02 (2006.01) C13K 13/00 (2006.01)
Patent
CA 1277981
ABSTRACT OF THE DISCLOSURE A method of hydrolyzing cellulose to glucose and other (poly)saccharides, involving the bringing together in a reaction area an alphacellulose containing material, water, an effective amount of a calcium chloride catalyst and a minor amount of HCl. The temperature of the feedstock is adjusted to between 150°C to 250°C at a pressure of at least 160 psig for a retention time of at least 10 seconds in the reaction area to convert the alphacellulose to glucose and other (poly) saccharides. The method involves the use of HCl on a total mass basis, ranging from 0.025% to 1.0% by weight of the reaction mixture which is fed into the reactor. SPECIFICATION This invention relates to methods of hydrolyzing cellulose to glucose and other (poly)saccharides and is most particularly related to new and improved industrial processes of this general class. As used the term (poly)saccharides includes the various mono and (poly)saccharides that will readily occur to those skilled in the art, which are capable of being produced by the process of the present invention. Trees and agricultural plants consist of three main components, cellulose, hemicellulose and lignin. Cellulose which is a polymer of glucose is held together by glycosidic bonds. It occurs in both amorphous and crystalline forms. The crystalline cellulose is a densely packed crystal structure which makes hydrolysis difficult. However, the C-O glycosidic bond is the weakest in the chain and can be broken by specific enzymes or chemical reagents into its component sugars.
512638
Nagle Richard T.
Power Alcohol Inc.
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