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Comprehensive utilization process of biomass raw material

A biomass raw material and process technology, which is applied to pulping with organic solvents, non-woody plant/crop pulp, pulp bleaching, etc., can solve the problems of low component yield and low purity, and achieve high extraction efficiency and reduce The effect of destroying and shortening the cooking time

Active Publication Date: 2013-05-01
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 biomass raw materials in the prior art, the problems of low yield and low purity of each component, and then provide a method that can efficiently separate lignin through reasonable parameter settings. , Comprehensive utilization process of cellulose and semi-fiber

Method used

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  • Comprehensive utilization process of biomass raw material

Examples

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Effect test

Embodiment 1

[0052] In this example, the biomass raw material is reed (ingredient composition: cellulose 49.5%, hemicellulose content 22.7%, lignin 18.9%), first crushed, washed with water to remove dust and crushed to a particle size of 0.5 -20cm.

[0053] The present embodiment comprises the following steps from the comprehensive utilization process of the biomass raw material:

[0054] (1) After the biomass raw material is pulverized and pretreated, the biomass raw material after treatment is cooked by using an organic acid solution with a total acid concentration of 70% formic acid and acetic acid. 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 125°C, react for 60min, and have a solid-liquid mass ratio of 1:5, and carry out the first solid-liquid separation of the obtained reaction solution;

[0055] (2) adding the solid obtained by the so...

Embodiment 2

[0068] In this embodiment, the rice straw (mass component composition: mass component composition: 35.8% cellulose, 28.6% hemicellulose, 14.3% lignin) was first crushed to a particle size of 0.5-20 cm.

[0069] The present embodiment comprises the following steps from the comprehensive utilization technique of described rice straw:

[0070] (1) After the rice straw is crushed and pretreated, use the organic acid solution of formic acid and acetic acid with a total acid concentration of 80% to cook the treated reeds. The mass ratio of acetic acid and formic acid in the organic acid solution of the present embodiment is 1: 3.5, and before adding the straw raw material, add hydrogen peroxide (H 2 o 2 ) as a catalyst, control the reaction temperature at 130°C, react for 40min, and have a solid-liquid mass ratio of 1:7.5, and carry out the first solid-liquid separation of the obtained reaction solution;

[0071] (2) adding the solid obtained by the solid-liquid separation for the f...

Embodiment 3

[0084] In this embodiment, the biomass raw material is bamboo chips (mass component 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.

[0085] The comprehensive utilization technology of bamboo chip described in the present embodiment, comprises the steps:

[0086] (1) After the bamboo chips are pulverized and pretreated, use the organic acid solution that the total acid concentration is 92% formic acid and acetic acid to cook the treated bamboo chips, and the mass ratio of acetic acid and formic acid in the organic acid solution of the present embodiment is 1:4, and add 6% hydrogen peroxide (H 2 o 2 ) as a catalyst, control the reaction temperature at 135°C, react for 45min, and have a solid-liquid mass ratio of 1:6.5, and carry out the first solid-liquid separation of the obtained reaction solution;

[0087] (2) the solid that solid-liquid separation obtains for the...

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Abstract

The invention relates to a method for comprehensive utilization of a biomass raw material, in particular to a method for comprehensive utilization of cellulose, hemicellulose and lignose in a biomass raw material. The method provided by the invention is that under the catalytic action of hydrogen peroxide, the biomass raw material is digested through the organic acid mixture of formic acid and acetic acid, so that cellulose, lignose and hemicellulose are respectively extracted to obtain cellulose, lignose and xylose, wherein the cellulose can be used in the textile industry.

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] Biomass raw materials exist in the form of plants, and the 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 biomass raw materials generated by photosynthesis exceeds 200 billion tons, so biomass raw materials are the most abundant and cheapest renewable resources on the 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 ethers such as methyl cellul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C3/20D21C9/16D21H11/12C08B37/14C08H7/00
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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