Biological degumming device and method for cotton stalk skin

Abstract

The invention provides a bio-degumming device for cotton stalk barks, which comprises a cotton stalk bark-core separator, a fiber opening and bark removing machine, fermentation equipment, a linear ramie backing machine, an oil impregnating machine, drying equipment, wherein the cotton stalk bark-core separator comprises a roller support, a rolling and stripping mechanism, carrier gears and a transmission device; the rolling and stripping mechanism comprises a plurality of roller groups erected on the roller support in turn; each roller group consists of an upper roller and a lower roller, which are correspondingly arranged up and down; one end of the lower roller is provided with an input gear; each carrier gear is arranged between two adjacent lower rollers, and is meshed with input gears of the two adjacent lower rollers respectively; and the transmission device drives one of input gears to rotate. The invention also provides a bio-degumming method for the cotton stalk barks. The cotton stalk bark-core separator performs back-core separation on the cotton stalk barks, and cotton stalk barks with low impurity content are obtained, so that the cotton stalk barks can be subjected to bio-degumming, and the method is simple.

Description

technical field [0001] The invention belongs to the technical field of cotton stalk husk fibers, and in particular relates to a biological degumming device and method for cotton stalk husks. Background technique [0002] Cotton stalk is the stalk of cotton, which is the waste of agricultural production. Cotton stalk is a semi-wood fiber raw material, rich in cellulose, lignin and pentosan, and has a wide range of potential utilization values. Cotton stalks can be peeled off and decomposed into cotton stalk skins and cotton stalk cores. Cotton stalk skins contain cellulose, lignin, pectin, hemicellulose, water-soluble substances and fatty waxes, and are compatible with ramie, flax, hemp, The components of hemp plants such as jute are relatively similar, and after degumming, cotton stalk fibers with good hygroscopic properties can be obtained. However, because the lignin content in cotton stalk bark is low, its average molecular weight is also low, and there is a chemical co...

AI Technical Summary

Problems solved by technology

Although this method can obtain fine-dried cotton stalk fiber, the processing process will cause damage to the fiber, the obtained fiber strength is low, and the fiber cannot be kept in a straight state, which affects subsequent processing.

[0004] The Chinese patent document with application number 200810031539.8 discloses a method for degumming cotton stalk skins. First, the cotton stalk skins are dried and softened to remove skin and impurities; then the dried and softened cotton stalk skins are straightened and the cotton The rod skin is immersed in the treatment liquid in the pretreatment tank in a straight state, and pretreated with ultrasonic waves with a frequency of 25KHz to 50KHz; the cotton rod skin after ultrasonic pretreatment is pressed dry, and immersed in a hydrogen Sodium oxide, water glass, anthraquinone or its derivatives, phosphorus-free washing powder, hydrogen peroxide and sodium tripolyphosphate for boiling and scouring; after drying and rinsing the boiled and bleached cotton stalk fiber , soaked in amino silicone oil in a straight state; the impregnated cotton stalk sheath fiber is pressed dry, dried, softened with polyether modified silicone oil, and then mechanically pressed to obtain a refined cotton stalk sheath fiber. The method has less damage to the cotton stalk fiber, and the obtained cotton stalk fiber is straight and strip-shaped, but the method has many steps, cumbersome process, and uses a large amount of chemical reagents, which increases the process of waste liquid treatment

[0005] Biological degumming has the advantages of simple steps and less damage to fibers. However, during the degumming process of cotton stalks, due to the complex structure of cotton stalks and difficult separation, the impurities in the cotton stalks obtained after manual separation or simple mechanical separation are relatively high. , which is not conducive to its biological degumming

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