Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Peeling and degumming process for hemp plants

A plant and degumming technology, which is applied in the direction of plant fiber, textiles, papermaking, fiber treatment, etc., can solve the problems of restricting the development of the hemp spinning industry, high cost, and many manpower, so as to reduce water resource consumption and environmental pollution, and save waste. Hemp labor and the effect of reducing the loss of hemp fiber

Inactive Publication Date: 2006-09-13
徐奎元
View PDF0 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Peeling and degumming process for hemp plants

Examples

Experimental program
Comparison scheme
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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): D06M16/00D06M101/04
Inventor 徐奎元
Owner 徐奎元
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com