A kind of ramie biochemical degumming method

A technology of biochemistry and degumming method, which is applied in the direction of producing bast fiber by chemical method, chemical post-treatment of fiber, plant raw materials, etc. It can solve the problems of great influence on fiber strength, complex process parameters, high processing cost, etc., and achieve the amount of residual glue Small size, simple process, and the effect of reducing residue

Active Publication Date: 2019-02-19
SICHUAN JB RAMIE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current degumming process, chemical degumming is commonly used. Among them, alkali boiling degumming is widely used because of its simple process and easy access to raw materials. However, this type of degumming technology has defects such as: (1) Consumption of sodium hydroxide, sulfuric acid and chemical auxiliary materials Larger, especially the consumption of sodium hydroxide accounts for about 40%; (2) The alkaline black liquor wastewater produced by this method is 300T / d, fibering water and flushing wastewater are about 2700T / d, and the cost of wastewater treatment is about 1.8 yuan / d tons; (3) chemical degumming has a great influence on the fiber strength, the strength is ≤5, and there are many parallel threads; (4) the process parameters are complicated and the operation is difficult

Method used

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  • A kind of ramie biochemical degumming method
  • A kind of ramie biochemical degumming method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] figure 1 It is the embodiment of the present invention 1 ramie degumming process flow, specifically:

[0026] Chop and cut the bast of the root of raw hemp, treat it with a softening machine, then get 550kg of raw hemp and spray the biological enzyme preparation HP-301 with a concentration of 6.5g / L until the raw hemp is moist, the water content is 40%, and the temperature is Under the condition of 50°C, ferment for 5 days;

[0027] Put the original hemp bars fermented in the warehouse into cages, put them into the fermenter for immersion fermentation, the liquor ratio is 1:8, and ferment for 24 hours;

[0028] After thoroughly washing with clear water, cook according to the bath ratio of 1:10, wherein 6 grams of sodium hydroxide recovery solution is added per liter of solution, so that the mass percentage of sodium hydroxide in the cooking solution is 0.6%, and the steam pressure is 2kg / cm 2 , at a temperature of 120°C, cook for 3 hours; after washing thoroughly agai...

Embodiment 2

[0032] Chop and cut the bast of the root of raw hemp, use a softening machine to soften it, and then take 550kg of raw hemp and spray the biological enzyme preparation HP-309 with a concentration of 5.5g / L until the water content of the raw hemp is 45%, and the temperature is 53°C Under the condition of , ferment for 6 days;

[0033] Put the original hemp bars fermented in the warehouse into cages, put them into the fermenter for immersion fermentation, the liquor ratio is 1:8, and ferment for 24 hours;

[0034] After thoroughly washing with clear water, cook according to the bath ratio of 1:10, wherein 5 grams of sodium hydroxide recovery solution is added to each liter of solution, so that the mass percentage of sodium hydroxide in the cooking solution is 0.5%, and the steam pressure is 2kg / cm 2 , at a temperature of 130°C, cook for 3 hours; after washing thoroughly again, cook again at a bath ratio of 1:10, wherein 15 grams of sodium hydroxide is added per liter of solution...

Embodiment 3

[0038] Chop and cut the bast at the root of the raw hemp, use a softening machine to soften it, and then take 550kg of raw hemp and spray the biological enzyme preparation HP-301 with a concentration of 5.5g / L until the water content of the raw hemp is 50%, and the temperature is 55°C Under the condition of , ferment for 7 days;

[0039] Put the original hemp bars fermented in the warehouse into cages, put them into the fermenter for immersion fermentation, the liquor ratio is 1:8, and ferment for 24 hours;

[0040] After thoroughly washing with clear water, cook according to the bath ratio of 1:10, wherein 7 grams of sodium hydroxide recovery solution is added per liter of solution, so that the mass percentage of sodium hydroxide in the cooking solution is 0.7%, and the steam pressure is 2kg / cm 2 , at a temperature of 125°C, cook for 3 hours; after washing thoroughly again, cook again at a bath ratio of 1:10, wherein 16 grams of sodium hydroxide is added per liter of solution...

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Abstract

The invention discloses a biochemical degumming method for ramie. The biochemical degumming method is characterized in that after the steps of stowing and fermenting, soaking and fermenting, primary boiling, secondary boiling, refining, oil feeding and fermenting, and the like are performed, the biochemical degumming new fermenting technique is adopted, so that the usage amount of alkaline and chemical auxiliary materials and the amount of residues in wastewater are reduced, and the treatment cost of wastewater is reduced; the amount of remained gum in the refined dry ramie is little, and the quality is stable. The biochemical degumming method has the advantages that the technology is simple, the operation is easy, and the industrial production is favorable.

Description

technical field [0001] The invention relates to the technical field of ramie treatment, in particular to a biochemical degumming method for ramie. Background technique [0002] Ramie fiber comes from ramie bast, accounting for about 65%, and the remaining non-cellulose components account for about 35%, including hemicellulose, pectin, lignin, etc., collectively referred to as colloids. In the current degumming process, chemical degumming is commonly used. Among them, alkali boiling degumming is widely used because of its simple process and easy access to raw materials. However, this type of degumming technology has defects such as: (1) Consumption of sodium hydroxide, sulfuric acid and chemical auxiliary materials Larger, especially the consumption of sodium hydroxide accounts for about 40%; (2) The alkaline black liquor wastewater produced by this method is 300T / d, fibering water and flushing wastewater are about 2700T / d, and the cost of wastewater treatment is about 1.8 yu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01C1/00D01C1/02
CPCD01C1/00D01C1/02
Inventor 张小祝李厚华冯友军杨继前陈一清李文成廖光辉
Owner SICHUAN JB RAMIE
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