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Patent Searching and Data


Title:
METHOD FOR CATALYTICALLY DECOMPOSING LIGNOCELLULOSIC RAW MATERIAL
Document Type and Number:
WIPO Patent Application WO/2020/192432
Kind Code:
A1
Abstract:
Disclosed herein is a method for catalytically decomposing a lignocellulosic raw material, comprising: using an organic solvent to pre-treat the lignocellulosic raw material, adding a solid acid catalyst to perform boiling after the pre-treatment, and performing solid-liquid separation after the boiling; washing and sieving the separated solid phase mixture to obtain cellulose and a solid acid catalyst; and concentrating the separated boiling liquid, and recovering the organic solvent, so as to obtain a mixture of saccharides and lignin. The present application uses an organic solvent as a solution to separate a lignocellulosic raw material, and uses a solid acid catalyst in combination to perform a catalytic reaction. By controlling process conditions, three products, i.e. a saccharide liquid, lignin, and cellulose are obtained, the efficient extraction of valuable components in the lignocellulosic raw material is realized, and the recovery rate of the valuable components can be 92 wt% or more. At the same time, the requirement of corrosion resistance of a separation device is reduced, and the solid acid catalyst and the organic solvent can be reused, thereby reducing production costs and environmental pollution, having good application prospects.

Inventors:
ZHANG RUIZHE (CN)
LIU YUNSI (CN)
MIN YU (CN)
CHEN WENJIAN (CN)
Application Number:
PCT/CN2020/078914
Publication Date:
October 01, 2020
Filing Date:
March 12, 2020
Export Citation:
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Assignee:
GUANGZHOU YINNOVATOR BIOTECH CO LTD (CN)
International Classes:
C08H7/00; C08B37/00; D21B1/30; D21C3/20; D21C5/00
Foreign References:
CN109942835A2019-06-28
CN108179644A2018-06-19
CN105755883A2016-07-13
CN1417406A2003-05-14
CN101638442A2010-02-03
CN108530404A2018-09-14
JP2011224499A2011-11-10
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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