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1. WO1996040970 - METHOD OF STRONG ACID HYDROLYSIS

Publication Number WO/1996/040970
Publication Date 19.12.1996
International Application No. PCT/US1996/008719
International Filing Date 03.06.1996
Chapter 2 Demand Filed 03.01.1997
IPC
C08B 15/02 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
BPOLYSACCHARIDES; DERIVATIVES THEREOF
15Preparation of other cellulose derivatives or modified cellulose
02Oxycellulose; Hydrocellulose; Cellulose hydrate
C12P 19/04 2006.01
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
19Preparation of compounds containing saccharide radicals
04Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
C13K 1/02 2006.01
CCHEMISTRY; METALLURGY
13SUGAR INDUSTRY
KSACCHARIDES, OTHER THAN SUCROSE, OBTAINED FROM NATURAL SOURCES OR BY HYDROLYSIS OF NATURALLY OCCURRING DI-, OLIGO- OR POLYSACCHARIDES
1Glucose; Glucose-containing syrups
02obtained by saccharification of cellulosic materials
CPC
C08B 15/02
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
BPOLYSACCHARIDES; DERIVATIVES THEREOF
15Preparation of other cellulose derivatives or modified cellulose ; , e.g. complexes
02Oxycellulose; Hydrocellulose; Cellulosehydrate, e.g. microcrystalline cellulose
C12P 19/04
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
19Preparation of compounds containing saccharide radicals
04Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
C13K 1/02
CCHEMISTRY; METALLURGY
13SUGAR INDUSTRY
KSACCHARIDES, OTHER THAN SUCROSE, OBTAINED FROM NATURAL SOURCES OR BY HYDROLYSIS OF NATURALLY OCCURRING DI-, OLIGO- OR POLYSACCHARIDES
1Glucose
02obtained by saccharification of cellulosic materials
Applicants
  • ARKENOL, INC. [US]/[US]
Inventors
  • FARONE, William, A.
  • CUZENS, John, E.
Agents
  • ALTMAN, Daniel, E.
  • SIMPSON, Andrew, H.
Priority Data
08/483,45407.06.1995US
08/483,45507.06.1995US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD OF STRONG ACID HYDROLYSIS
(FR) PROCEDE D'HYDROLYSE AU MOYEN D'UN ACIDE FORT
Abstract
(EN)
An economically viable method for producing sugars using concentrated acid hydrolysis of biomass containing cellulose and hemicellulose is disclosed. The cellulose and hemicellulose in the biomass is first decrystallized and then hydrolyzed to produce a hydrolysate containing both sugars and acid. Silica and silicates present in the biomass can then be removed for further processing, which includes the steps of treating the solids with a metal hydroxide solution to produce an extract, reducing the pH of the extract to produce silicic acid, and removing the silicic acid from the extract. The remaining solids are then subjected to a second decrystallization if necessary and a second hydrolyzation to optimize the sugar yields.
(FR)
L'invention porte sur un procédé économiquement viable de production de sucres par le biais d'une hydrolyse en milieu acide concentré d'une biomasse contenant de la cellulose et de l'hémicellulose. La cellulose et l'hémicellulose présentes dans la biomasse sont d'abord décristalisées puis hydrolysées afin de produire un hydrolysat contenant à la fois des sucres et de l'acide. Il est alors possible de retirer la silice et les silicates présents dans la biomasse en vue d'un traitement supplémentaire qui consiste à traiter les solides avec une solution d'hydroxyde métallique afin de produire un extrait, à diminuer le pH de l'extrait pour produire de l'acide silicique et à séparer celui-ci de l'extrait. Les solides qui demeurent sont alors soumis, si nécessaire, à une seconde décristalisation ainsi qu'à une seconde hydrolyse pour optimiser les rendements en sucre.
Also published as
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