Manufacturing method of ramie based on sectioned circulation

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...

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