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Peeling and degumming process for hemp plants

A plant and degumming technology, applied in textiles and papermaking, fiber treatment, biochemical fiber treatment, etc., can solve the problems of restricting the development of hemp spinning industry, manpower, and high cost, so as to reduce water resource consumption and environmental pollution, reduce hemp Effects of fiber loss and labor saving for scraping

Inactive Publication Date: 2005-03-16
徐奎元
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The method for removing the skin of hemp plants at present is to scrape off the skin of the hemp skin by mechanical means with the hemp skin peeled off from the hemp stalk, which will lose about 15% of the hemp fiber and consume more manpower simultaneously; It uses chemical method to cook at high temperature in acid-base solution, which consumes a lot of water and is harmful to hemp fiber. Recently, biological methods are used for degumming, but the time required for degumming is very long, the cost is high, and it is difficult to adapt to industrial production. It is still immature and seriously restricts the development of the hemp spinning industry

Method used

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  • Peeling and degumming process for hemp plants

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Effect test

Embodiment 1

[0017] Get the degumming enzyme T28, T66, T85 strains produced by the Hemp Research Institute of the Chinese Academy of Agricultural Sciences to cultivate the degumming enzyme, and prepare an acidic compound enzyme at 25%, 50%, and 25%, and then make an aqueous solution with an enzyme concentration of 0.6% , then add oxalic acid to make the pH of the solution = about 5, pour it into the cooking pot, put the ramie bark peeled off from the hemp stalk into the cooking pot, open the steam valve to supply steam to the cooking pot, and use it as a pot When the medium temperature rises to 50°C, turn off the steam to keep the temperature in the pot basically constant for 1 hour, then turn on the steam to raise the temperature to 100°C, then turn off the steam to keep the temperature in the pot basically constant for 1 hour, then turn off Steam, cool to normal temperature, pull out the hemp skin from the pot, rinse with water, rub while flushing, remove the hemp skin; get the degumming ...

Embodiment 2

[0019] Get the degumming enzyme T28, T66, T85 bacterial classification that Chinese Academy of Agricultural Sciences Institute of Hemp produces and cultivate degumming enzyme, and be mixed with acidic compound enzyme by 30%, 30%, 40%, after being made into enzyme concentration is adjusted to 1%. Add sulfuric acid to the aqueous solution to make the pH of the solution about 3, pour it into the cooking pot, put the ramie bark peeled off from the hemp stalk into the cooking pot, open the steam valve to supply steam to the cooking pot, when When the temperature in the pot rises to 70°C, turn off the steam to keep the temperature in the pot basically constant for 2 hours, then turn on the steam to raise the temperature to 120°C, turn off the steam to keep the temperature in the pot basically constant for 1.5 hours, Turn off the steam, cool to normal temperature, remove the hemp skin from the pot, rinse with water, rub while washing to remove the hemp skin; take the degumming enzyme ...

Embodiment 3

[0021] Get the degumming enzyme T28, T66, T85 bacterial classification that Chinese Academy of Agricultural Sciences Institute of Hemp produces and cultivate degumming enzyme, and be mixed with acidic compound enzyme by 30%, 30%, 40%, after being made into enzyme concentration is adjusted to 1%. Add sulfuric acid to the aqueous solution to make the pH of the solution about 3, pour it into the cooking pot, put the tung hemp bark peeled off from the hemp stalk into the cooking pot, open the steam valve to supply steam to the cooking pot, When the temperature in the pot rises to 70°C, turn off the steam to keep the temperature in the pot basically constant for 2 hours, then turn on the steam to raise the temperature to 120°C, then turn off the steam to keep the temperature in the pot basically constant for 2 hours , turn off the steam, cool to normal temperature, remove the hemp skin from the pot, rinse with water, rub while flushing, remove the hemp skin; take the degumming enzym...

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Abstract

The invention relates to a peeling and degumming process for hemp plants, comprising: peeling off the hurds from the stalk, peeling the hurds by acid enzyme and removing the woodiness by alkali enzyme and lignin. The method abolishes the procedure of mechanically peeling off hurds so as to avoid the fiber loss during peeling off hurds and improve the 15% of yield. Meanwhile, the degumming process needs less water, degumming time, low acid and alkali concentration in the boiling liquid. The boiling liquid can be recycled.

Description

(1) Technical field [0001] The invention relates to a method for peeling and degumming hemp plants, which belongs to the field of fiber preparation. (2) Background technology [0002] The method for removing the skin of hemp plants at present is to scrape off the skin of the hemp skin by mechanical means with the hemp skin peeled off from the hemp stalk, which will lose about 15% of the hemp fiber and consume more manpower simultaneously; It uses chemical method to cook at high temperature in acid-base solution, which consumes a lot of water and is harmful to hemp fiber. Recently, biological methods are used for degumming, but the time required for degumming is very long, the cost is high, and it is difficult to adapt to industrial production. It is still immature and seriously restricts the development of hemp spinning industry. (3) Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a biochemical peeling and degum...

Claims

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Application Information

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IPC IPC(8): D06M16/00
Inventor 徐奎元
Owner 徐奎元
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