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Efficient and environment-friendly husk processing method

A treatment method and an environment-friendly technology, applied in the chemical post-treatment of fibers, fiber treatment, raw material pre-treatment, etc., can solve the problems of reducing the yield of chaff, high loss rate of chaff, black color, etc., and achieve enhanced cleaning. , low cost, simple process effect

Active Publication Date: 2017-05-10
XIAMEN HUSKS NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at the same time, the wastewater produced by lye treatment is rich in lignin, black in color, and smelly. It is a paper-making wastewater that has been discolored so far, and it is also a very difficult technical problem.
In addition, in the process of dust removal and impurity removal, lye treatment also has a relatively large limiting effect on microbial contamination such as mold and aflatoxin. More importantly, the dissolution of hemicellulose and pectin greatly reduces the grain husk. Yield rate, according to previous data, the chaff loss rate of the soda cooking method is as high as 40%

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1. Put the following parts by weight in a container and stir evenly, then place at room temperature for 24 hours and then filter out the rice husk, including 100 parts of rice husk, 0.5 part of lime, 0.01 part of Pingping, and 200 parts of water.

[0017] 2. Put the separated rice husk in a stirring cleaner, inject clean water, stir and wash for 1 hour, and finally filter to obtain the rice husk.

[0018] 3. First dry the rice husks in the above steps at 80°C until the water content is 10%, then immediately spray 0.5% alkali metal solution on the high-temperature rice husks until it is soaked, and repeat the above drying and spraying steps twice , and finally dry the rice husk at 80°C until its water content is less than 5%. In order to ensure the uniformity of drying and spraying, this step can be carried out in a large-scale drying production line with turning and conveying functions.

[0019] 4. Put the dried chaff into the purpose vibration screening machine for vi...

Embodiment 2

[0021] 1. Put the following parts by weight in a container, stir evenly, place at room temperature for 1 hour, and then filter out sorghum husks, wherein 100 parts of sorghum husks, 1 part of lime, 0.001 parts of Tween, and 50 parts of water.

[0022] 2. Put the separated sorghum husks in a stirring cleaner, inject clean water, stir and clean them, and finally filter to obtain rice husks.

[0023] 3. First dry the sorghum husks in the above steps at 120°C until the water content is 20%, then immediately spray 1% alkali metal solution on the high-temperature sorghum husks until it is soaked, and repeat the above drying and spraying steps 3 times , and finally dry sorghum husks at 20°C until their moisture content is below 8%.

[0024] 4. Place the dried sorghum husks in the purpose vibration screening machine for vibration screening.

Embodiment 3

[0026] 1. Put the following parts by weight in a container, stir evenly, place at room temperature for 12 hours, and then filter out the rice husks, including 100 parts of buckwheat husks, 5 parts of lime, 0.03 parts of Tween, and 500 parts of water.

[0027] 2. Put the separated buckwheat husks in a stirring cleaner, inject clean water, stir and clean them, and finally filter to obtain rice husks.

[0028] 3. First dry the buckwheat husks in the above steps at 90°C until the water content is 16%, then immediately spray 10% alkali metal solution on the high-temperature buckwheat husks until they are soaked, and repeat the above drying and spraying steps twice. , and finally dry buckwheat husks at 90°C until their moisture content is below 5%.

[0029] 4. Put the dried buckwheat husks in the purpose vibration screening machine for vibration screening.

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Abstract

The invention relates to an efficient and environment-friendly husk processing method. The method comprises the following steps of softening, detoxification, washing, drying, soaking with alkali liquor and screening. Husk is soaked with limewater for removal of dust and bacteria; the normal-temperature alkali liquor is sprayed to the high-temperature husk so that pectin and hemicellulose can be slightly dissolved, residual dark spots and impurities on the husk can be removed again under the action of heat expansion and cold contraction, and more importantly, trace amounts of alkali metals can remains in the husk, and the alkalescence of the alkali metals is beneficial to bonding of an adhesive in the processing process of husk powder; finally, the impurities are further removed by vibratory screening, and the cleaning of the husk is enhanced again. The process is simple, the required device is simple and the cost is low; no wastewater difficult to process is generated in the whole process, and the whole process is environmentally friendly and harmless; the yield is up to 90% or above; the strength of a plant fiber product made from the husk processed through the method is greatly improved.

Description

technical field [0001] The pretreatment of the plant fiber that the present invention relates to especially relates to a kind of efficient and environment-friendly chaff treatment method. Background technique [0002] Rice husks, sorghum husks and other rice husks, represented by plant fibers, are a huge amount of natural renewable energy in nature, and their effective use is an important way to solve the shortage of resources. However, rice husks, sorghum husks and other rice husks tend to have mold spots and dust on their inner and outer surfaces during the growth and storage process, especially in humid and high temperature environments. These mold stains, aflatoxins and other Microbial metabolites, dust, glumes, etc. lead to serious restrictions on its resource utilization, reducing the combination and compatibility of fiber and other substances, and the ingredients of the chaff itself, such as lignin, pectin, hemicellulose, etc. Processing and conversion of chaff fiber...

Claims

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Application Information

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IPC IPC(8): D21B1/02C08H8/00D01C1/00
CPCC08H8/00D01C1/00D21B1/02D21B1/021D21B1/023
Inventor 庄展鹏
Owner XIAMEN HUSKS NEW MATERIAL TECH CO LTD
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