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

New bast fiber pectin degumming processing method

A processing method and hemp fiber technology, applied in the field of new hemp fiber pectin degumming processing, can solve the problems of affecting cellulose quality, long processing time, and affecting processing efficiency, so as to improve production efficiency, shorten processing technology, and achieve high efficiency. The effect of damage to degummed fibers

Inactive Publication Date: 2016-04-20
宿州学院
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Different hemp contains different colloids, so the processing methods required are also different. Although the current chemical methods used to remove pectin can remove pectin, they do great damage to cellulose, and the processing time is very long , which greatly affects the processing efficiency and the quality of the processed cellulose

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: the present embodiment carries out as follows:

[0020] Step 1: acid leaching: put the raw hemp into water, then add dilute sulfuric acid, the concentration of sulfuric acid after adding is 0.5ml / L, then heat to 35°C for 50min;

[0021] Step 2: Washing: Take out the raw hemp after acid leaching and rinse it twice with water, 10 minutes each time;

[0022] Step 3: Pre-degumming:

[0023] 1. Put water in the steamer and heat the water to 90°C, then put in the pre-washed raw hemp, then continue to heat the water, add the pre-degumming potion when it reaches 150°C, the pre-degumming potion contains Sodium thiosulfate, sulfuric acid, potassium chloride, the ratio between them is 6:1:0.6 respectively, and the concentration after adding the pre-degumming syrup is 0.3ml / L, then continue to heat the water for 60 minutes and keep it at 150°C, Finally, let it cool naturally to 95°C;

[0024] 2. Then heat the water up to 135°C for the second time, and then cool dow...

Embodiment 2

[0032] Embodiment 2: the present embodiment carries out as follows:

[0033] Step 1: Acid leaching: Put the raw hemp into water, then add dilute sulfuric acid, the concentration of sulfuric acid after adding is 1.0ml / L, then heat to 45°C for 40 minutes;

[0034] Step 2: Washing: Take out the raw hemp after acid leaching and rinse it twice with water, 10 minutes each time;

[0035] Step 3: Pre-degumming:

[0036] 1. Put water in the steamer and heat the water to 80°C, then put in the pre-washed raw hemp, then continue to heat the water, add the pre-degumming potion when it reaches 150°C, the pre-degumming potion contains Sodium thiosulfate, sulfuric acid, potassium chloride, the ratio between them is 6:1:0.6 respectively, and the concentration after adding the pre-degumming syrup is 0.5ml / L, then continue to heat the water for 60 minutes and keep it at 150°C, Finally, let it cool naturally to 95°C;

[0037] 2. Then heat the water up to 135°C for the second time, and then coo...

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 discloses a new bast fiber pectin degumming processing method. The new bast fiber pectin degumming processing method comprises the following steps: placing original hemp in water, adding dilute sulphuric acid, heating to 35 to 45 DEG C and soaking for 40 to 50 minutes; taking out the original hemp which is soaked with acid and rinsing twice; heating water to 80 to 90 DEG C in a steamer, placing the original hemp in the water, adding a pre-degumming solution at 150 DEG C, continuing heating for 60 minutes, and cooling to 95 DEG C; heating to 135 DEG C and steaming for 10 minutes; heating to 110 DEG C and steaming for 25 minutes; rinsing the pre-degummed original hemp twice; heating water to 70 to 80 DEG C in the other steamer, placing the pre-degummed original hemp in the steamer, adding a degumming solution at 120 DEG C, heating the water for 50 minutes, and finally cooling to 90 DEG C; heating to 115 DEG C and steaming for 10 minutes; heating to 110 DEG C and steaming for 20 minutes; and cooling to room temperature and rinsing the original hemp three times. According to the method disclosed by the invention, the processed fibers are complete; pectin is removed completely; the damage to the fibers is low; the process time is greatly shortened; and the production efficiency is remarkably improved.

Description

Technical field: [0001] The invention relates to the technical field of hemp fiber production, in particular to a new pectin degumming processing method for hemp fiber. Background technique: [0002] Hemp crops can be used as raw materials for chemical industry, medicine and papermaking. All hemp fibers are cellulose fibers, the basic chemical composition is cellulose, and other non-fibers such as pectin, hemicellulose, lignin, and fat wax Substances, these are collectively referred to as "colloid", hemp fibers are bonded into sheets by colloid, and they are all associated with cellulose. To take out available fibers, the colloid must be removed to separate the fibers, so it is called is called degumming. Different hemp contains different colloids, so the processing methods required are also different. Although the current chemical methods used to remove pectin can remove pectin, they do great damage to cellulose, and the processing time is very long , thus greatly affecti...

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
IPC IPC(8): D01C1/02
CPCD01C1/02
Inventor 邓福康
Owner 宿州学院
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