Cotton stalk peel fiber cleaning and deguming method

Abstract

The invention discloses a method for cleaning and degumming cotton stalk bark fiber, combining flash explosion, high pressure and high pressure. The inventive method comprises that: washing cotton stalk bark in water, drying, flash explosion, washing in hot water, washing in water, degumming with high pressure and high temperature, washing in water, feeding oil to soften, removing oil, drying and ultra drying cotton stalk bark fiber. The invention first utilizes flash explosion technique to degrade part of semi-cellulose and lignin, utilizes high-temperature high-pressure technique to treat cotton stalk bark deeply in order to remove the lignin and semi-cellulose and obtain white soft cotton stalk bark fiber. Since the cotton stalk bark fiber is similar to prior estopa fiber, it has high lignin content and high strength; since the inventive method uses flash explosion and high-pressure high-temperature low-alkali technique, it can effectively remove lignin and reduce fiber strength to effectively degum, without pollution.

Description

technical field [0001] The invention relates to a degumming method, in particular to a process for cleaning and degumming cotton stalk fiber. Background technique [0002] Cotton stalk skin is a kind of good bast fiber, which is the main by-product fiber brought by planting cotton, accounting for about 30% to 35% of the whole cotton stalk, and its cellulose content is about 62.8%. my country is the second largest cotton-producing country in the world. One mu of cotton field produces 225-250 kg of cotton stalks, and the leather part accounts for 26%. Leather resources are extremely rich. Therefore, making full use of cotton stalk resources is of great significance to alleviate the serious shortage of cotton fibers in my country. But people often used cotton stalk fiber as pulping and papermaking material in the past, also applied for many patents about cotton stalk pulping and papermaking aspect simultaneously, as: CN1068866, CN1052484. [0003] With the increasing advocacy...

AI Technical Summary

Problems solved by technology

Although they have made a positive step in using cotton stalks as textile materials, the methods they use have disadvantages such as large environmental pollution.