Method for preparing microcrystalline cellulose taking xylose residue as raw material

A technology of microcrystalline cellulose and xylose residue, which is applied in fiber raw material processing, textiles and papermaking, etc., can solve the problems of repeated environmental pollution and large energy consumption, and achieve environmental protection, stable product quality and simple production process Effect

Active Publication Date: 2013-03-27
SHANDONG FUTASTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing microcrystalline cellulose with xylose residue as raw material, so as to solve the problem that the prior art needs to use strong acid and strong alkali, consume a large amount of energy, water and chemical reagent raw materials, and cause many times of damage to the environment. pollution and other issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Preparation of hydroxyl radical active oxygen chemical agent: prepare a KOH solution with a concentration of 5%, add it to a hydroxyl radical active oxygen agent preparation device equipped with a titanium-based coating electrode, electrify, and the KOH solution induces an effect in the electric field Next, generate HO containing - 、HO 2 - 、HO . , O 2 Chemical agents such as free radicals, which have dual functions of alkalinity and oxidative properties.

[0017] (2) Take the xylose residue, add water to dilute it to a concentration of 10% by mass, and keep stirring. According to the action of gravity, the sediment and other impurities in the xylose residue will sink to the bottom, and the suspended xylose residue in the upper layer will be collected to obtain sand-removed wood. Aqueous solution of sugar residue.

[0018] (3) Take the desanded xylose residue and separate it with a small centrifuge to remove most of the water in the xylose residue to obtain desa...

Embodiment 2

[0023] (1) Preparation of hydroxyl radical active oxygen chemical agent: prepare a KOH solution with a concentration of 30%, add it to the hydroxyl radical active oxygen agent preparation device equipped with a titanium-based coating electrode, electrify, and the KOH solution induces an effect in the electric field Next, generate HO containing - 、HO 2 - 、HO . , O 2 Chemical agents such as free radicals, which have dual functions of alkalinity and oxidative properties.

[0024] (2) Take the xylose residue, add water to dilute it to a mass percentage concentration of 2%, and continue to stir. According to the action of gravity, the sediment and other impurities in the xylose residue will sink to the bottom, and the suspended xylose residue in the upper layer will be collected to obtain sand removal wood. Aqueous solution of sugar residue.

[0025] (3) Take the desanded xylose residue and separate it with a small centrifuge to remove most of the water in the xylose residue t...

Embodiment 3

[0030] (1) Preparation of hydroxyl radical active oxygen chemical agent: prepare a KOH solution with a concentration of 12%, add it to the hydroxyl radical active oxygen agent preparation device equipped with a titanium-based coating electrode, electrify, and the KOH solution induces an effect in the electric field Next, generate HO containing - 、HO 2 - 、HO . , O 2 Chemical agents such as free radicals, which have dual functions of alkalinity and oxidative properties.

[0031] (2) Take the xylose residue, add water to dilute to a concentration of 6% by mass, and continue to stir. According to the action of gravity, the sediment and other impurities in the xylose residue will sink to the bottom, and the suspended xylose residue in the upper layer will be collected to obtain sand removal wood. Aqueous solution of sugar residue.

[0032] (3) Take the desanded xylose residue and separate it with a small centrifuge to remove most of the water in the xylose residue to obtain de...

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Abstract

The invention discloses a method for preparing microcrystalline cellulose taking xylose residue as a raw material and belongs to the technical field of chemical fibers. According to the method, scraps generated in xylose production, namely, xylose residue, is taken as the raw material, and hydroxyl radical reactive oxygen is taken as a chemical agent and is utilized for dissolving the xylose residue to prepare the microcrystalline cellulose through catalysis, oxidization and bleaching technologies. The method comprises the following technical steps of: (1) preparation of the chemical agent, (2) dilution and impurity removal, (3) separation and dehydration, (4) vacuum drying, (5) catalytic oxidization, and (6) washing, drying and smashing: drying and smashing collected cellulose samples, so as to obtain a microcrystalline cellulose product for synthetic leather. According to the method disclosed by the invention, the problems of low resource utilization rate, serious environment pollution and the like in the corncob industries at present are solved, the production cost is reduced greatly, the harmonious development of resources and environments is promoted, and therefore, the method has important popularization and application values as well as a wide market prospect.

Description

technical field [0001] The invention belongs to the technical field of chemical fibers, and in particular relates to a method for preparing microcrystalline cellulose by using xylose residue as a raw material. Background technique [0002] Microcrystalline cellulose (Microcrystalline celulose, MCC) is a kind of linear polysaccharide bound by β-1,4 glucosidic bonds. Or near white powdery solid product. The traditional preparation of microcrystalline cellulose mainly uses natural fibers with high α-cellulose such as rice husk, beet pulp, bagasse and corncobs, wheat, barley, straw and reed stalks, peanut shells, loofah, and Indian bamboo as raw materials. Hydrolysis, washing, drying, crushing and other chemical processes to dissolve lignin and other non-cellulose substances, then wash and dry to obtain powdered microcrystalline cellulose products. This process requires the use of strong acids and alkalis, and consumes a lot of energy. Water sources and chemical reagents (chem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C5/00
Inventor 孙鲁李林杜瑞锋高永旭王成福李毅
Owner SHANDONG FUTASTE
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