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Comprehensive utilization method of lignocellulose biomass

A technology of lignocellulose and biomass, applied in the field of comprehensive utilization of cellulose, hemicellulose and lignin in lignocellulosic biomass, can solve the problem of low enzymatic hydrolysis extraction rate of cellulose, achieve the elimination of space barriers, use Long-lasting, easy-to-reach effects

Active Publication Date: 2014-11-19
JINAN SHENGQUAN GROUP SHARE HLDG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention is to overcome the problem of low cellulose enzymatic extraction rate in the prior art when comprehensively utilizing hemicellulose, lignin and cellulose, thereby proposing a cellulose enzymatic extraction rate high Comprehensive utilization method of lignocellulosic biomass

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  • Comprehensive utilization method of lignocellulose biomass

Examples

Experimental program
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Effect test

Embodiment 1

[0057] (1) Alkali solution to extract alkali lignin

[0058] 10.6kg of crushed corn cobs (mass composition: moisture 6.12%, cellulose 35.19%, hemicellulose 32.1%, lignin 23.7%, other 2.95%, the same below) were broken, washed with water to remove dust, and then hydrogenated Alkaline hydrolysis with sodium oxide solution, wherein the liquid-solid volume ratio is 5:1, the concentration of sodium hydroxide solution is 6%, the temperature is raised to 70°C, and after 2 hours of cooking and alkaline hydrolysis, the alkali hydrolysis residue and alkali lignin solution are separated , with 10kg of water to clean the alkali lignin residue, the cleaning solution is combined with the alkali lignin solution; finally obtain the alkali lignin solution of 20.38kg alkali lignin residue (about 65% moisture content) and 49.61kg; in the alkali lignin solution The content of alkali lignin is 3.16%, and the extraction rate of alkali lignin is 62%.

[0059] The formula of alkali lignin extraction...

Embodiment 2

[0071] (1) Alkali solution to extract alkali lignin

[0072] 10.6 kg of pulverized corn cobs were broken, washed with water to remove dust, and then carried out alkaline hydrolysis with sodium hydroxide solution, wherein the liquid-solid volume ratio was 20:1, the concentration of sodium hydroxide solution was 5%, and the temperature was raised to 100 ° C. After 1 hour of cooking alkaline hydrolysis, the alkali hydrolysis residue and alkali lignin solution are separated, and the alkali hydrolysis residue is cleaned with 10 kg of water, and the cleaning solution is merged with the alkali lignin solution; finally, 19.29 kg alkali hydrolysis residue (moisture content) is obtained 65%) and 200.67kg of alkali lignin solution; the content of alkali lignin in the alkali lignin solution is 0.79%, and the extraction rate of alkali lignin is 63%.

[0073] (2) acid hydrolysis

[0074] Get all the alkali hydrolysis residues that present embodiment (1) alkali hydrolysis treatment obtains,...

Embodiment 3

[0078] (1) Alkali solution to extract alkali lignin

[0079] 10.6 kg of pulverized corn cobs were broken, washed with water to remove dust, and then carried out alkaline hydrolysis with sodium hydroxide solution, wherein the liquid-solid volume ratio was 10:1, the concentration of sodium hydroxide solution was 8%, and the temperature was raised to 40 ° C. After 6 hours of cooking alkaline hydrolysis, the alkali hydrolysis residue and alkali lignin solution are separated, and the alkali hydrolysis residue is cleaned with 10 kg of water, and the cleaning solution is merged with the alkali lignin solution; finally, 21.47 kg alkali hydrolysis residue (moisture content) is obtained About 65%) and 93.85kg of alkali lignin solution; the content of alkali lignin in the alkali lignin solution is 1.53%, and the extraction rate of alkali lignin is 57%.

[0080] (2) acid hydrolysis

[0081] Get all the alkali hydrolysis residues that present embodiment (1) alkali hydrolysis treatment obt...

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Abstract

A comprehensive utilization method of lignocellulose biomass comprises the following steps: (a) performing alkaline hydrolysis of the lignocellulose biomass to extract lignin; (b) performing acid hydrolysis of the residues obtained in the alkaline hydrolysis processing , separating to obtain a pentose solution and acid hydrolysis residues; (c) performing enzymatic hydrolysis of the residues obtained by alkaline hydrolysis processing in step (b) by using cellulase to obtain a solution with a main component of glucose, wherein the cellulase is obtained by culturing a strain of penicillium which has a classification name of Penicillium decumbens PD-G3-08, and is preserved in Wuhan University China Center for Type Culture Collection with a preservation number of CCTCC M 2011195 and a preservation date of June 13, 2011. The method improves the extraction ratio of cellulose enzymatic hydrolysis, and realizes comprehensive utilization of lignocellulose biomass resources.

Description

technical field [0001] The invention relates to a method for comprehensively utilizing lignocellulosic biomass, in particular to a method for comprehensively utilizing cellulose, hemicellulose and lignin in lignocellulosic biomass. Background technique [0002] With the depletion of fossil fuel resources and the increasing environmental pollution, the use of renewable energy as a substitute for petrochemical products has become increasingly important. Fuel ethanol is the main form of biomass liquid energy and the most likely substitute for fossil fuels. At present, the world's ethanol production mainly uses starches (corn, cassava, etc.) and sugars (sugar cane, sugar beets, etc.) as raw materials for fermentation. The technology of using microbial fermentation to produce ethanol is mature, but the high cost of raw materials restricts the industrial application of grain fermentation to produce ethanol. At the same time, there are disadvantages such as competition with people...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P19/14C08H7/00C13K13/00
Inventor 唐一林江成真张恩选高绍丰韩文斌崔建丽马军强焦峰张茜刘洁
Owner JINAN SHENGQUAN GROUP SHARE HLDG
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