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Comprehensive utilization method of biomass raw material

A biomass raw material and process technology, applied in application, sugar production, food science and other directions, can solve the problems of low yield and low purity, and achieve the effects of high extraction efficiency, avoiding esterification reaction and shortening cooking time.

Active Publication Date: 2014-07-02
JINAN SHENGQUAN GROUP SHARE HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] For this reason, the technical problem to be solved by the present invention lies in the comprehensive extraction process route of lignocellulosic biomass in the prior art, and the problems of low yield and low purity of each component obtained, and then provide a method that can be adjusted through reasonable parameters. A comprehensive utilization process for efficiently separating lignin, cellulose and hemifiber;

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  • Comprehensive utilization method of biomass raw material

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Effect test

Embodiment 1

[0055] In this example, the biomass raw material is reed (ingredient composition: 49.5% cellulose, 22.7% hemicellulose content, 18.9% lignin). 0.5-20cm.

[0056] The present embodiment comprises the following steps from the comprehensive utilization process of the biomass raw material:

[0057] (1) After the biomass raw material is pulverized and pretreated, the organic acid solution of formic acid and acetic acid with a total acid concentration of 70% is used to cook the treated biomass raw material. The mass of acetic acid and formic acid in the organic acid solution of this embodiment The ratio is 1:1, and 3% hydrogen peroxide (H 2 o 2 ) as a catalyst, control the reaction temperature at 130°C, react for 20 minutes, the solid-liquid mass ratio is 1:5, and conduct the first solid-liquid separation of the obtained reaction liquid;

[0058] (2) The solid obtained from the first solid-liquid separation is added to an organic acid solution with a total acid concentration of 6...

Embodiment 2

[0072] In this example, the straw (ingredient composition: 35.8% cellulose, 28.6% hemicellulose, 14.3% lignin) was crushed first, washed with water to remove dust and crushed to a particle size of 0.5-20 cm.

[0073] The present embodiment comprises the following steps from the comprehensive utilization technique of described rice straw:

[0074] (1) After the rice straw is pulverized and pretreated, the treated rice straw is cooked using an organic acid solution with a total acid concentration of 95% formic acid and acetic acid. The mass ratio of acetic acid to formic acid in the organic acid solution of this embodiment is 1: 7, and before adding the straw raw material, add hydrogen peroxide (H 2 o 2 ) as a catalyst, control the reaction temperature at 135°C, react for 40 minutes, the solid-liquid mass ratio is 1:6, and conduct the first solid-liquid separation of the obtained reaction liquid;

[0075] (2) The solid obtained from the first solid-liquid separation is added t...

Embodiment 3

[0089] In this example, the biomass raw material is bamboo chips (ingredient composition: 47.3% cellulose, 24.6% hemicellulose, 25.8% lignin), first crushed, washed with water to remove dust and crushed to a particle size of 0.5 -20cm.

[0090] The comprehensive utilization technology of bamboo chip described in the present embodiment, comprises the steps:

[0091] (1) After the bamboo chips are pulverized and pretreated, the organic acid solution of formic acid and acetic acid with a total acid concentration of 80% is used to cook the treated bamboo chips. The mass ratio of acetic acid to formic acid in the organic acid solution of this embodiment is 1:6, and add 6% hydrogen peroxide (H 2 o 2 ) as a catalyst, control the reaction temperature at 150°C, react for 45 minutes, and have a solid-liquid mass ratio of 1:7, and conduct the first solid-liquid separation of the obtained reaction liquid;

[0092] (2) The solid obtained from the first solid-liquid separation is added t...

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Abstract

The invention relates to a comprehensive utilization method of lignocellulosic biomass, and concretely relates to a method for comprehensively utilizing celluloses, hemicelluloses and lignin in the lignocellulosic biomass. The method is characterized in that the celluloses, the lignin and the hemicelluloses can be respectively extracted by boiling the lignocellulosic biomass through a formic acid and acetic acid mixed organic acid under the catalysis action of hydrogen peroxide, the obtained celluloses have a high purity and can be used in the textile industry, and the comprehensive and stable implementation of three routes improves the extraction rates of three products.

Description

technical field [0001] The invention relates to a method for comprehensively utilizing biomass raw materials, in particular to a method for extracting cellulose, hemicellulose and lignin from biomass raw materials. Background technique [0002] Lignocellulosic biomass exists in the form of plants, and its main components are cellulose, hemicellulose and lignin, of which cellulose accounts for about 40%, hemicellulose accounts for about 25%, and lignin accounts for about 20%. The total amount of lignocellulosic biomass generated by photosynthesis in the world exceeds 200 billion tons every year, so lignocellulosic biomass is the most abundant and cheapest renewable resource on earth. [0003] Cellulose is the main component of plant cell walls. The cellulose used for textile and papermaking in the world reaches 8 million tons per year. In addition, using separated and purified cellulose as raw material, rayon, cellophane, nitrate, acetate and other ester derivatives and eth...

Claims

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Application Information

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IPC IPC(8): D21C3/20D21C9/16D21H11/12C13K13/00C08H7/00
Inventor 唐一林江成真高绍丰刘洁刘云鹏张茜
Owner JINAN SHENGQUAN GROUP SHARE HLDG
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