Manufacturing method of ramie based on sectioned circulation

A production method and technology for ramie fiber, which are applied in the field of clean production of high-quality ramie fiber, can solve the problems of difficult pollution control, serious pollution, large amount of waste water, etc., and achieve a reduction in the rate of hard sliver, low degree of water pollution, and low amount of sewage. Effect

Active Publication Date: 2010-01-13
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
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Problems solved by technology

[0010] The invention proposes a ramie fiber production method based on segmental circulation, which solves the problems of

Method used

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  • Manufacturing method of ramie based on sectioned circulation

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Embodiment 1

[0048] The sequence of four steps in this embodiment is raw hemp pretreatment, chemical treatment, biological treatment, post-treatment;

[0049] (1) Raw hemp pretreatment: after 20g of ramie raw hemp is moistened with water, sequentially tortured for 1 minute, treated with ultrasonic wave for 15 minutes, and after tortured for 15 minutes, treated with ultrasonic wave for 30 minutes to obtain ramie hemp material;

[0050] (2) chemical treatment: use the sodium hydroxide solution containing sodium polyphosphate and sodium silicate to boil the ramie hemp material at a temperature of 70° C., and the scouring time is 30 minutes; the concentration of the sodium hydroxide solution is 2.5%, wherein, Sodium hydroxide 16.67g, with the raw ramie mass ratio is 1: 1.2, sodium polyphosphate 2.22g, with the ramie raw hemp mass ratio is 1: 9, sodium silicate 2.22g, with the ramie raw hemp mass ratio is 1: 9;

[0051] (3) Biological treatment: the ramie material is treated with biological en...

Embodiment 2

[0055] The sequence of four steps in this embodiment is raw hemp pretreatment, chemical treatment, biological treatment, post-treatment;

[0056] (1) Raw hemp pretreatment: After 20g of ramie raw hemp is moistened with water, sequentially tortured for 15 minutes, treated with ultrasonic wave for 30 minutes, and then treated with ultrasonic wave for 15 minutes, to obtain ramie hemp material;

[0057] (2) Chemical treatment: first torture the ramie hemp material for 30 minutes while rinsing with water, then use a potassium hydroxide solution containing sodium polyphosphate and sodium silicate to boil the ramie hemp material at a temperature of 70°C for 30 minutes; The concentration of potassium hydroxide solution is 2.5%, wherein, potassium hydroxide 23.53g, and ramie raw hemp mass ratio are 1: 0.85, sodium polyphosphate 2.22g, and ramie raw hemp mass ratio are 1: 9, sodium silicate 2.22g, and the mass ratio of ramie raw hemp is 1:9;

[0058] (3) Biological treatment: the ramie...

Embodiment 3

[0062] The sequence of four steps in this embodiment is raw hemp pretreatment, chemical treatment, biological treatment, post-treatment;

[0063] (1) Raw hemp pretreatment: After 20g of ramie raw hemp is moistened with water, tortured for 30 minutes sequentially, and then tortured for 30 minutes, to obtain ramie hemp material;

[0064] (2) Chemical treatment: first torture the ramie hemp material for 60 minutes while rinsing with water, and then use a sodium hydroxide solution containing sodium polyphosphate and sodium silicate to boil the ramie hemp material at a temperature of 95°C for 1 hour and 45 minutes. minute; the concentration of sodium hydroxide solution is 4.2%, wherein, sodium hydroxide 9.09g, be 1: 2.2 with the mass ratio of ramie raw hemp, sodium polyphosphate 1.18g, be 1: 17 with ramie raw hemp mass ratio, silicon Sodium acid sodium 1.18g, and the mass ratio of ramie raw hemp is 1: 17;

[0065] (3) Biological treatment: first torturing the ramie hemp material f...

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Abstract

The invention discloses a manufacturing method of ramie based on sectioned circulation, belonging to the manufacturing method of textile fibre and solving the problems that the prior method has a large quantity of waste water, serious pollution and high cost. The method comprises following steps: pretreatment of primary ramie, chemical treatment, biological treatment and post treatment; the pretreatment improves the degree of looseness of the primary ramie through beating, ultrasound or extraction; the biological treatment degrades pectin, hemicellulose and others impurities through bio-enzyme or microbial fermentation; the chemical treatment further degrades residual pectin and others impurities through alkali boil-off; the post treatment obtains refined dry ramie by beating, whitening, water scrubbing, dehydration, oil feeding, drying, carding and baking. The quality of the product meets the requirements of first-class GB/T 20793-2006, the degumming yield rate is improved by 15%, the water consumption is reduced by at least 60%, the method is free from using acid, the alkali charge is reduced by 65%; water, the alkali and the bio-enzyme used in each step are recyclable; the byproducts can be recycled in time, the sewage quantity is small and the pollution level is low.

Description

technical field [0001] The invention belongs to a textile fiber production method, in particular to a clean production method of high-quality ramie fiber in the textile industry. Background technique [0002] Linen textiles are one of the "green products" with the most development potential in the 21st century. Although the international market of linen textiles has fluctuated due to various reasons, with the strengthening of global environmental awareness and consumers' new understanding of linen textiles, The international market of hemp textiles has a relatively large development. The export of domestic hemp textile products is gradually developing from low-grade varieties of initial processing to high-grade deep processing. my country's hemp textiles are exported to more than 100 countries and regions. It is expected that during the "Eleventh Five-Year Plan" period, exports will still have a large room to grow. Ramie is a unique natural fiber resource in my country. Its...

Claims

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Application Information

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IPC IPC(8): D01C1/02D01C1/04D01B9/00
Inventor 余龙江樊培何峰
Owner HUAZHONG UNIV OF SCI & TECH
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