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Comprehensive utilization method of lignocellulose biomass

A technology of lignocellulose and biomass, which is applied in the field of comprehensive utilization of cellulose, hemicellulose and lignin in lignocellulosic biomass, can solve the problems of low conversion rate of cellulose enzymatic hydrolysis, and achieve improved extraction rate and equipment Simple maintenance and the effect of eliminating space obstacles

Active Publication Date: 2015-04-22
JINAN SHENGQUAN GROUP SHARE HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 conversion rate of cellulose enzymolysis in the prior art when comprehensively utilizing hemicellulose, lignin and cellulose, thereby proposing a conversion method of cellulose enzymolysis A method for the comprehensive utilization of high-efficiency lignocellulosic biomass

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  • Comprehensive utilization method of lignocellulose biomass

Examples

Experimental program
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Effect test

Embodiment 1

[0046] (1) acid hydrolysis

[0047] 10.6kg corn cobs (mass composition: moisture 6.12%, cellulose 35.19%, hemicellulose 32.1%, lignin 23.7%, other 2.95%, the same below) are broken, washed with water to remove dust, and then processed with 80kg phosphoric acid solution Hydrolysis, the mass concentration of phosphoric acid solution is 15%, the temperature of acid hydrolysis is 140 ℃, the time is 0.5 hour, the acid hydrolysis residue and the pentose sugar solution obtained after hydrolysis are separated, wash described acid hydrolysis residue with 10kg water, cleaning solution Merge with described pentose solution, finally obtain 17.9kg acid hydrolysis residue (moisture content is about 65%, the absolute dry content of hemicellulose is 13.03%, the absolute dry content of lignin is 32.67%, the absolute dry content of cellulose 49.27%) and 82.07kg pentose solution, the concentration of pentose solution is 3.16%. Then the extraction rate of hemicellulose is 76%.

[0048] The calc...

Embodiment 2

[0060] (1) acid hydrolysis

[0061] Break 10.6kg of corncobs, wash with water to remove dust, and then hydrolyze with 80kg of phosphoric acid solution, the mass concentration of phosphoric acid solution is 20%, the temperature of acid hydrolysis is 100°C, and the time is 2 hours. After the hydrolysis is completed, the separated acid hydrolysis Residue and pentose solution, wash described acid hydrolysis residue with 10kg water, and cleaning solution merges with described pentose solution, finally obtain 16.42kg acid hydrolysis residue (moisture content is about 65%, and the absolute dry content of hemicellulose is 11.86 %, the absolute dry content of lignin is 32.72%, the absolute dry content of cellulose is 49.95%) and 83.56kg pentose sugar solution, and the concentration of pentose sugar solution is 3.26%. Then the extraction rate of hemicellulose is 80%.

[0062] (2) Extraction of alkali lignin with alkaline solution

[0063] Mix all acid hydrolysis residues obtained in s...

Embodiment 3

[0067] (1) acid hydrolysis

[0068] Break 10.6kg of corncobs, wash with water to remove dust, and then use 80kg of phosphoric acid solution for hydrolysis, the mass concentration of phosphoric acid solution is 5%, the temperature of acid hydrolysis is 150 ° C, and the time is 3 hours. Residue and pentose solution, clean described acid hydrolysis residue with 10kg water, and cleaning solution merges with described pentose solution, finally obtains 18.01kg acid hydrolysis residue (water content is about 65%, and the dry content of hemicellulose is 13.52 %, the dry content of lignin is 32.495%, the dry content of cellulose is 49%) and 81.98kg pentose solution, and the concentration of pentose solution is 3.12%. Then the extraction rate of hemicellulose is 75%.

[0069] (2) Extraction of alkali lignin with alkaline solution

[0070] All acid hydrolysis residues obtained in step (1) of this embodiment were processed according to the process method of step (2) of embodiment 1. Ob...

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Abstract

The invention relates to a comprehensive utilization method of lignocellulose biomass. The method comprises the following steps of (a) performing acid hydrolysis on the lignocellulose biomass to obtain a pentose solution and acid hydrolysis residues after separation; (b) treating the acid hydrolysis residues with an alkali solution so as to extract alkali lignin; and (c) performing enzymatic hydrolysis on the alkali hydrolysis residues obtained by alkali solution treatment in the step (b) by using cellulose so as to obtain a solution with glucose as a main component, wherein the cellulose is obtained by culturing a strain of penicillium, the penicillium is named as penicillium recumbent PD-G3-08 which is preserved in Wuhan University, China Center for Type Culture Collection, with a preservation number of CCTCC M 2011195. The above method increases conversion rate of cellulose enzymatic hydrolysis and realizes comprehensive utilization of the 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 producing ethanol by microbial fermentation is mature, but the high cost of raw materials limits the industrial application of grain fermentation to produce ethanol. At the same time, there are disadvantages such as competition with people for gr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P19/14C12P19/02C08H7/00C13K13/00C12R1/80
Inventor 唐一林江成真高绍丰张恩选马军强栗昭争赵兴国郭雨霖
Owner JINAN SHENGQUAN GROUP SHARE HLDG
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