Title:
METHOD FOR SEPARATING HEMICELLULOSES FROM A BIOMASS CONTAINING HEMICELLULOSES
Document Type and Number:
WIPO Patent Application WO2002075042
Kind Code:
A3
Abstract:
The invention relates to a method for separating hemicelluloses from a biomass containing hemicelluloses. Said method comprises the following steps: a) the hemicelluloses are extracted from the biomass containing hemicelluloses by means of treatment with a complex compound in an aqueous solution, forming a soluble hemicellulose complex, and b) the complexed hemicelluloses are separated from the biomass. The inventive method is especially suitable for producing high-quality chemical conversion pulp from raw cellulose. Not only does the inventive method enable the obtained products to have a high degree of purity, but it is also extremely economical and causes few emissions. The inventive method is also characterised in that polymer hemicelluloses in a pure form can be obtained as by-products.
Inventors:
KETTENBACH GERHARD (DE)
STEIN ARMIN (DE)
STEIN ARMIN (DE)
Application Number:
PCT/EP2002/001359
Publication Date:
March 20, 2003
Filing Date:
February 08, 2002
Export Citation:
Assignee:
RHODIA ACETOW GMBH (DE)
KETTENBACH GERHARD (DE)
STEIN ARMIN (DE)
KETTENBACH GERHARD (DE)
STEIN ARMIN (DE)
International Classes:
C08B1/00; C08B37/00; D21C3/00; C08H8/00; D21C3/22; D21C; (IPC1-7): D21C3/22; C08B37/14
Domestic Patent References:
| WO2000047812A1 | 2000-08-17 |
Foreign References:
| US5876779A | 1999-03-02 | |||
| GB1500050A | 1978-02-08 |
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