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Method of producing fiber from corn straw

A technology of corn stalks and fibers, which is applied in the chemical post-treatment of fibers, fiber treatment, textiles and papermaking, etc., can solve problems such as personal health hazards and environmental pollution, and achieve great economic and social benefits, broad prospects, and resources rich effect

Inactive Publication Date: 2006-11-22
王来云 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Corn is the main crop in our country. At the same time, a large amount of corn stalks are produced. Except for a small part that is used, most of them are burned on the spot, causing great pollution to the environment and harm to human health.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0007] Example 1, first crush the dry corn stalks into short joints of about 3cm, put them into the steam explosion tank, and at the same time add catalyst CaO according to the weight ratio of corn stalks 1:0.001, pressurize to 1.7MPa, stop for 7 minutes and start Steam explosion. Put the steam-exploded stalk into the hydrolysis tank, then add water according to the weight ratio of corn stalk and water 1:4; add compound enzyme, the weight ratio of corn stalk and compound enzyme is 1:0.001; heat to 45 ℃; hydrolysis time 20 minutes. After hydrolysis, the state of the corn stalk in the tank is lignin on the top, hemicellulose in the middle and cellulose at the bottom. Then release the cellulose that sinks at the bottom of the hydrolysis tank, then dehydrate the released cellulose, then use ozone and hydrogen peroxide to bleach, mix, dissolve, filter, defoam, spin, wash, dry, crimp, cut, Conventional processes such as packaging to produce corn stalk short fibers.

example 2

[0008] Example 2: First, crush dry corn stalks into short joints of about 3 cm, and send them into the steam explosion tank. At the same time, add catalyst CaO according to the weight ratio of corn stalks 1:0.0013, pressurize to 1.8 MPa, and stop for 7.5 minutes before proceeding. Steam explosion. Put the stalk after steam explosion into the hydrolysis tank, then add water according to the weight ratio of corn stalk and water 1:6; add compound enzyme, the weight ratio of corn stalk and compound enzyme is 1:0.002; heat to 50 ℃; hydrolysis time 40 minutes. After hydrolysis, the state of the corn stalk in the tank is lignin on the top, hemicellulose in the middle and cellulose at the bottom. Then release the cellulose that sinks at the bottom of the hydrolysis tank, then dehydrate the released cellulose and then bleach with ozone and hydrogen peroxide, mix, dissolve, filter, defoam, spin, wash, dry, crimp, cut, and pack and other conventional processes to produce corn stalk sho...

example 3

[0009] Example 3: first crush the dry corn stalks into short joints of about 3cm, and send them into the steam explosion tank. At the same time, add the catalyst CaO2 according to the weight ratio of corn stalks 1:0.0015, pressurize to 1.9MPa, and stop for 8 minutes. Steam explosion. Put the stalk after steam explosion into the hydrolysis tank, then add water according to the weight ratio of corn stalk and water 1: 8.5; add compound enzyme, the weight ratio of corn stalk and compound enzyme is 1: 0.003; heat to 60 ℃; hydrolysis time 60 minutes. After hydrolysis, the state of the corn stalk in the tank is lignin on the top, hemicellulose in the middle and cellulose at the bottom. Then release the cellulose that sinks at the bottom of the hydrolysis tank, then dehydrate the released cellulose and then bleach with ozone and hydrogen peroxide, mix, dissolve, filter, defoam, spin, wash, dry, crimp, cut, and pack and other conventional processes to produce corn stalk short fibers....

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PUM

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Abstract

The invention relates to a technology for producing fiber from corn stalks by means of steam explosion and enzymatic bacteria hydrolysis. First put the crushed corn stalk and a small amount of catalyst into the steam explosion tank for steam explosion, then put the steam-exploded stalk into the hydrolysis tank and add 1-3‰ of the weight of the stalk with compound enzyme and 4 ‰ of the stalk weight ~8.5 times of water is used for hydrolysis, and after hydrolysis, the hydrolyzate is dehydrated and separated, and the separated cellulose can be processed by conventional processes to produce short straw fibers. The whole process of producing corn stalk fiber by using the method has no pollution, no waste water and waste gas discharge, and all by-products in the production process can be processed and utilized. It is rich in resources, turns waste into wealth, has broad prospects, and has great economic and social benefits.

Description

1. Technical field: [0001] The invention relates to a technology for producing fiber from corn stalks by means of steam explosion and enzymatic bacteria hydrolysis. 2. Background technology: [0002] Corn is the main crop in our country. At the same time, a large amount of corn stalks are produced. Except for a small part that is used, most of them are burned on the spot, causing great pollution to the environment and harm to human health. 3. Contents of the invention: [0003] The invention is to produce the fiber with wide application through steam explosion and enzymatic bacteria hydrolysis of corn stalks. [0004] First put the crushed corn stalk and a small amount of catalyst into the steam explosion tank for steam explosion, then put the steam exploded straw into the hydrolysis tank and add 1-3‰ of the straw weight of compound enzyme and 4-4% of the straw weight. 8.5 times of water is used for hydrolysis, and after hydrolysis, the hydrolyzate is dehydrated and separ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01C1/00D21B1/36
Inventor 王来云秦加友李魁成王山侯来运秦岭
Owner 王来云