Comprehensive utilization method of biomass raw material

A biomass raw material and process technology, which is applied in the preparation/purification of carbon, pulping with organic solvents, non-woody plant/crop pulp, etc., can solve the problems of low component yield and low purity, and achieve extraction efficiency High, reduce damage, shorten the effect of 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

[0012] 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

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  • Comprehensive utilization method of biomass raw material

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Embodiment 1

[0062] In this example, the biomass raw material is reed (mass component composition: 49.5% cellulose, 22.7% hemicellulose content, 18.9% lignin), first crushed, washed with water, dedusted and crushed to a particle size of 2cm ~10cm. The present embodiment comprises the following steps from the comprehensive utilization process of the biomass raw material:

[0063] (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 60% 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 125°C, react for 40 minutes, and have a solid-liquid mass ratio of 1:10, and conduct the first solid-liquid separation of the obtained reaction liquid;

[0064] (2) The solid obtained from the first solid-liquid sepa...

Embodiment 2

[0078] In this embodiment, the rice straw (mass component composition: 35.8% cellulose, 28.6% hemicellulose, and 14.3% lignin) was first crushed to a particle size of 2 cm to 10 cm. The present embodiment comprises the following steps from the comprehensive utilization technique of described rice straw:

[0079] (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 65% formic acid and acetic acid. The mass ratio of acetic acid to formic acid in the organic acid solution of this embodiment is 1: 6, and add before adding the straw raw material and account for 4% hydrogen peroxide (H 2 o 2 ) as a catalyst, control the reaction temperature at 130°C, react for 10 minutes, the solid-liquid mass ratio is 1:30, and conduct the first solid-liquid separation of the obtained reaction liquid;

[0080] (2) The solid obtained from the first solid-liquid separation is added to an organic aci...

Embodiment 3

[0094] In this embodiment, the biomass raw material is bamboo chips (mass 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 2cm~10cm. The comprehensive utilization technology of bamboo chip described in the present embodiment, comprises the steps:

[0095] (1) After the bamboo slices are pulverized and pretreated, the treated bamboo slices are cooked with an organic acid solution with a total acid concentration of 70% formic acid and acetic acid. The mass ratio of acetic acid to formic acid in the organic acid solution of this embodiment is 1:12, and add 6% hydrogen peroxide (H 2 o 2 ) as a catalyst, the reaction temperature is controlled at 80°C, and the reaction is carried out for 90 minutes. The solid-liquid mass ratio of the organic acid liquid and the bamboo chip raw material is 1:5, and the obtained reaction liquid is subjected to solid-liquid separation for the first time...

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Abstract

The invention relates to a comprehensive utilization method of a biomass raw material, and concretely relates to a method for comprehensively utilizing celluloses, hemicelluloses and lignin in the biomass raw material. The method is characterized in that the celluloses, lignin and the hemicelluloses can be respectively extracted by boiling the biomass raw material through a formic acid and acetic acid mixed organic acid under the catalysis action of hydrogen peroxide in order to obtain highly pure celluloses and lignin, the combined production of furfural and biochar is realized by utilizing a residual sugar solution, and the highly pure celluloses 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 and lignin from biomass raw materials and co-producing furfural and biochar. 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 ether...

Claims

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Application Information

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IPC IPC(8): D21C3/20D21C9/16D21H11/12C08H7/00C08B37/14C01B31/02C01B32/05
Inventor 唐一林江成真高绍丰刘洁刘云鹏白福玉
Owner JINAN SHENGQUAN GROUP SHARE HLDG
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