Title:
A PROCESS OF JOINT PRODUCTION OF FUEL ETHANOL, ELECTRICITY AND PAPER PULP BY CLASSIFICATION CONVERSION OF PENNISETUM PURPUREUM SCHUM
Document Type and Number:
WIPO Patent Application WO/2009/105928
Kind Code:
A1
Abstract:
A process of joint production of fuel ethanol, electricity and paper pulp by fractionation conversion of Pennisetum purpureum Schum, which includes steam blasting the Pennisetum purpureum Schum segments with a steam blasting device, obtaining fibres and an aqueous solution containing degraded hemicellulose by washing the steam-blasted product with water; obtaining oligoxylose by separating and purifying the washing solution; fractionating the fibres; using the longer fibers so obtained for auto-catalyzed ethanol pulping, then bleaching the pulp so obtained to obtain a paper pulp; recovering and separating the ethanol to obtain alcohol-soluble lignin; preparing cellulase by solid fermentation; obtaining ethanol and fermentation residue by simultaneous saccharification and fermentation of the mixture of the shorter fibres, solid cellulase and yeast, said fermentation producing also CO2; drying the fermentation residue for use as a biofuel for electricity generation.
Inventors:
CHEN HONGZHANG (CN)
ZHANG JIANXING (CN)
LEUNG CHEUK LAM (CN)
LI YONG (CN)
ZHANG JIANXING (CN)
LEUNG CHEUK LAM (CN)
LI YONG (CN)
Application Number:
PCT/CN2008/001474
Publication Date:
September 03, 2009
Filing Date:
August 15, 2008
Export Citation:
Assignee:
INST PROCESS ENG CAS (CN)
GREEN RESOURCES TECHNOLOGY LTD (CN)
CHEN HONGZHANG (CN)
ZHANG JIANXING (CN)
LEUNG CHEUK LAM (CN)
LI YONG (CN)
GREEN RESOURCES TECHNOLOGY LTD (CN)
CHEN HONGZHANG (CN)
ZHANG JIANXING (CN)
LEUNG CHEUK LAM (CN)
LI YONG (CN)
International Classes:
C12P7/06; D21C1/02; D21C5/00; D21C9/10
Domestic Patent References:
| WO2002086228A1 | 2002-10-31 |
Foreign References:
| CN1216150C | 2005-08-24 | |||
| CN101063276A | 2007-10-31 | |||
| CN101058948A | 2007-10-24 | |||
| CN100357396C | 2007-12-26 | |||
| DE19603491A1 | 1997-08-07 |
Attorney, Agent or Firm:
CHINA SCIENCE PATENT & TRADEMARK AGENT LTD. (Bldg. BTsinghua Tongfang Hi-Tech Plaza,No.1, Wangzhuang Rd.,Haidain District, Beijing 3, CN)
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