Title:
METHOD FOR OBTAINING CELLULOSE AND A SOLUTION OF LOW-MOLECULAR-WEIGHT OXIDATION PRODUCTS FROM BIOMASS (EMBODIMENTS)
Document Type and Number:
WIPO Patent Application WO/2013/162422
Kind Code:
A3
Abstract:
The invention relates to a method for obtaining cellulose and a solution of water-soluble products which consists in pouring water, containing 1-10% ethanol, into a reactor, heating the water to 58-75°С, adding FeCl3 х 6Н2О and soda to the mixture in a mass ratio of 1.5 -10 iron chloride to soda, holding the aqueous solution at a temperature of 58-75°С for a minimum of 10 minutes while continuously stirring, leaving the aqueous solution to stand until the complete precipitation of Fe, introducing biomass in a ratio of 10-20 water to biomass, stirring the resultant mixture and holding same for a maximum of 10 hours, adding hydrogen peroxide in a ratio of 3.5 : 0.5 hydrogen peroxide to biomass, stirring the resultant mixture for a period of 2-25 hours until the hydroperoxides have been completely exhausted, separating the resultant oxidate into a solid precipitate (cellulose) and a solution of water-soluble products, and washing the solid precipitate with water, which is added to the aqueous solution of water-soluble products upon completion of the washing process.
Inventors:
KASAIKINA OLGA TARASOVNA (RU)
PISARENKO LEONID MIKAILOVICH (RU)
ZINOVIEV IGOR VIKTOROVICH (RU)
PISARENKO LEONID MIKAILOVICH (RU)
ZINOVIEV IGOR VIKTOROVICH (RU)
Application Number:
PCT/RU2013/000329
Publication Date:
January 09, 2014
Filing Date:
April 17, 2013
Export Citation:
Assignee:
OBSCHESTVO S OGRANICHENNOI OTVETSTVENNOSTIU TSELLOKORM (RU)
International Classes:
D21C5/00; C10G1/00; D21C3/04
Domestic Patent References:
| WO2010115488A1 | 2010-10-14 |
Foreign References:
| RU2425715C1 | 2011-08-10 |
Other References:
KHIMICHESKAIA ENTSIKLOPEDIIA, M., vol. 3, 1992, pages 356
Attorney, Agent or Firm:
BELOUSKO, Sergey Nikolaevich (24-12Moscow, 4, RU)
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