Title:
PROCESS FOR REFINING AND PRODUCING CELLULOSE, LIGNIN AND XYLOSE FROM BIOMASS MATERIAL
Document Type and Number:
WIPO Patent Application WO/2008/106895
Kind Code:
A1
Abstract:
A process for refining and producing cellulose, lignin and xylose from biomass
material comprises the following steps: pulverizing and screening the biomass
material; and then dipping the biomass material in organic acid with lower boiling
point and decomposing it into xylose, xylo-oligosaccharide, cellulose and
lignin to make the biomass material fluidify; cooling the fluidified biomass
material after finishing the reaction, adding organic solvent, and mixing uniformly
and standing; separating, washing and drying the precipitation to obtain amorphous
cellulose after precipitating; distilling the mother solution of precipitation
of celluloseand recovering the organic acid and the resulting volatile organic
substance; standing the distilled mother solution after cooling, and then separating,
washing and drying the precipitation to obtain xylose and xylo-oligosaccharide
after precipitating; distilling and recovering the organic solvent in the mother
solution of precipitation of xylose and xylo-oligosaccharide, and separating
and drying the precipitation separated out from the distilled mother solution.
Inventors:
LI RONGXIU (CN)
DONG DEXIAN (CN)
CHEN DEZHAO (CN)
LI YANYI (CN)
SUN JIE (CN)
DONG DEXIAN (CN)
CHEN DEZHAO (CN)
LI YANYI (CN)
SUN JIE (CN)
Application Number:
PCT/CN2008/070432
Publication Date:
September 12, 2008
Filing Date:
March 06, 2008
Export Citation:
Assignee:
UNIV SHANGHAI JIAOTONG (CN)
SHENZHEN RECYCLON TECHNOLOGIES (CN)
LI RONGXIU (CN)
DONG DEXIAN (CN)
CHEN DEZHAO (CN)
LI YANYI (CN)
SUN JIE (CN)
SHENZHEN RECYCLON TECHNOLOGIES (CN)
LI RONGXIU (CN)
DONG DEXIAN (CN)
CHEN DEZHAO (CN)
LI YANYI (CN)
SUN JIE (CN)
International Classes:
D21C3/20; C07G1/00; C13K1/02; D21C5/00
Foreign References:
| CN101016703A | 2007-08-15 | |||
| CA1100266A | 1981-05-05 | |||
| DE3423024A1 | 1986-01-02 | |||
| US4904342A | 1990-02-27 | |||
| SU1043211A1 | 1983-09-23 | |||
| GB701107A | 1953-12-16 |
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (Xuhui, Shanghai 3, CN)
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