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A process for producing xylose from biomass raw materials

A biomass raw material, xylose technology, applied in the field of xylose production, can solve the problems of complex xylose extraction process, high acid-base energy consumption, etc., and achieve the effects of avoiding processing difficulties, no acid-base consumption, and reducing acid content

Active Publication Date: 2015-09-23
JINAN SHENGQUAN GROUP SHARE HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] For this reason, the technical problem to be solved by the present invention is that in the prior art, due to the existence of sulfate ions, the xylose extraction process is complicated and the acid-base energy consumption is high. Process with higher extraction rate of xylose

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  • A process for producing xylose from biomass raw materials

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Embodiment 1

[0042] First, the reeds (hemicellulose content 22.8%) are crushed, washed with water to remove dust and crushed to a particle size of 0.5-20 cm.

[0043] The comprehensive utilization process of biomass raw materials described in this embodiment comprises the following steps:

[0044] (1) After crushing the reed raw material for pretreatment, under the catalysis of hydrogen peroxide, use an organic acid solution with a total acid concentration of 80% to cook the treated biomass raw material, control the reaction temperature at 115°C, and react for 40 minutes. The solid-liquid mass ratio is 1:8, and the obtained reaction liquid is subjected to solid-liquid separation for the first time, wherein the mass ratio of acetic acid and formic acid forming the organic acid liquid is 4:1, and the mass ratio of hydrogen peroxide accounts for the 2% of the quality of biomass raw materials;

[0045] (2) Under the catalysis of hydrogen peroxide, the solid obtained from the first solid-liqui...

Embodiment 2

[0050] First, the wheat straw (hemicellulose content 31.4%) is crushed, washed with water to remove dust and crushed to a particle size of 0.5-20 cm.

[0051] The comprehensive utilization process of biomass raw materials described in this embodiment comprises the following steps:

[0052] (1) After crushing the wheat straw raw material for pretreatment, under the catalysis of hydrogen peroxide, use an organic acid solution with a total acid concentration of 60% to cook the processed raw material, control the reaction temperature at 100°C, and react for 60 minutes. The solid-liquid mass ratio is 1:15, and the obtained reaction solution is subjected to solid-liquid separation for the first time, wherein the mass ratio of acetic acid and formic acid forming the organic acid liquid is 3:1, and the mass ratio of hydrogen peroxide accounts for the 3% of the quality of biomass raw materials;

[0053] (2) Under the catalysis of hydrogen peroxide, the solid obtained from the first so...

Embodiment 3

[0058] In this embodiment, the biomass raw material is corn stalks. First, the corn stalks (with a hemicellulose content of 35.7%) are crushed, washed with water to remove dust and crushed to a particle size of 0.5-2 cm.

[0059] The comprehensive utilization process of biomass raw materials described in this embodiment comprises the following steps:

[0060] (1) After crushing the biomass straw raw material for pretreatment, under the catalysis of hydrogen peroxide, use an organic acid solution with a total acid concentration of 70% to cook the treated biomass raw material, and control the reaction temperature to 105°C. React for 50 minutes, the solid-liquid mass ratio is 1:30, and the obtained reaction liquid is subjected to solid-liquid separation for the first time, wherein the mass ratio of acetic acid and formic acid forming the organic acid liquid is 10:1, and the mass ratio of hydrogen peroxide Accounting for 5% of the mass of the biomass raw material;

[0061] (2) Un...

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Abstract

The invention relates to a method for preparing xylose from biomass raw materials, and specifically relates to a method for comprehensively utilizing biomass raw materials to prepare xylose. In the preparation method, a mixed organic acid composed of formic acid and acetic acid is used to cook the biomass raw materials in the presence of a hydrogen peroxide catalyst so as to obtain a pentaglucose solution, and then the pentaglucose solution is subjected to processes of decoloring, filtrating, condensing, and crystallizing so as to obtain the needed xylose crystals. Because in the preparation technology, the catalyst is hydrogen peroxide, and the biomass raw materials are cooked by a mixed organic acid composed of formic acid and acetic acid, no sulfate ion exists in the pentaglucose solution, thus no additional neutralization treatment is required to neutralize the solution, the difficult post treatment of neutralization treatment is avoided at the same time, moreover no acid or alkali consumption exists in this preparation technology, and thus the preparation technology has the advantages of energy saving and no pollution.

Description

technical field [0001] The invention relates to a method for producing xylose from biomass raw materials, in particular to a method for comprehensively utilizing biomass raw materials to produce xylose. Background technique [0002] Xylose is a component of xylan, which is widely found in plants. Xylose also exists in animal heparin, chondroitin and glycoproteins, and it is the linking unit of sugar chains and serine (or threonine) in some glycoproteins. Xylose in a free state has not been found in nature so far. Xylose has attracted widespread attention because it has no burden on islets and is suitable for diabetics. [0003] Xylose has more than 40 years of production experience in my country, and the production technology has reached the world level. At present, my country is already the world's largest producer and exporter of xylose, and with the development of the economy and the improvement of living standards, the domestic market continues to expand, providing ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C13K13/00
Inventor 唐一林江成真刘洁高绍丰张茜
Owner JINAN SHENGQUAN GROUP SHARE HLDG
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