Flax roving supercritical CO2 biological enzyme bleaching device and bleaching method thereof

A CO2, supercritical technology, applied in sustainable manufacturing/processing, textile/flexible product manufacturing, textile and papermaking, etc., can solve problems such as high energy consumption and high pollution

Active Publication Date: 2017-06-13
YIXING SUNSHINE LINEN TEXTILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the high pollution and high energy consumption problems in the flax roving bleaching process, the present invention provides a flax roving supercritical CO 2 Biological enzyme bleaching device and bleaching method

Method used

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  • Flax roving supercritical CO2 biological enzyme bleaching device and bleaching method thereof
  • Flax roving supercritical CO2 biological enzyme bleaching device and bleaching method thereof
  • Flax roving supercritical CO2 biological enzyme bleaching device and bleaching method thereof

Examples

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Effect test

Embodiment 1

[0028] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. The structure of the bleaching kettle used in the following examples is the supercritical carbon dioxide cheese dyeing kettle in the Chinese patent whose publication number is CN102787459A, such as the dyeing kettle structure described in Example 1 in the publication.

[0029] combined with Figure 1-3 , to illustrate the supercritical carbon dioxide bleaching device and bleaching process of the present invention.

[0030] Supercritical carbon dioxide bleaching device of the present invention, as figure 1 shown, including CO 2 Tanks, Filters, Blenders, CO 2 booster pump, preheater, heater, bleaching tank, separation tank, auxiliary solvent tank, liquid delivery pump and magnetic circulation pump, wherein the CO 2 Tanks, Filters, Blenders, CO 2 The booster pump, preheater, bleaching tank, and separation tank are connected in sequence through...

Embodiment 2

[0040] According to the supercritical carbon dioxide bleaching device described in embodiment 1 and working principle, the flax roving is bleached, comprising the steps:

[0041] (1) Preparation of biological enzyme bleaching agent:

[0042] Mix 0.5% (o.w.f.) xylanase and 1% (o.w.f.) glucose oxidase, dissolve them in water, prepare a mixed solution with a concentration of 1 wt%, and obtain a biological enzyme bleaching agent, stir evenly and set aside;

[0043] (2) 10kg flax roving bobbins are placed in the bleaching kettle, and the biological enzyme bleaching agent is placed in the cosolvent tank;

[0044] (3) Turn on the refrigeration system, liquid CO 2 in CO 2 It flows out of the storage tank, and the biological enzyme bleach in the co-solvent tank is injected into the co-solvent inlet of the blender under the action of the liquid delivery pump, and enters the inlet of the pinhole conveyor through the co-solvent channel, and passes through the pinhole conveyor in the pin...

Embodiment 3

[0047] According to the supercritical carbon dioxide bleaching device described in embodiment 1 and working principle, the flax roving is bleached, comprising the steps:

[0048] (1) Preparation of biological enzyme bleaching agent:

[0049] Mix 0.2% (o.w.f.) xylanase and 1.5% (o.w.f.) glucose oxidase, dissolve in water, configure a mixed solution with a concentration of 1.5wt%, to obtain a biological enzyme bleaching agent, stir evenly and set aside;

[0050] (2) 12kg flax roving bobbins are placed in the bleaching kettle, and the biological enzyme bleaching agent is placed in the cosolvent tank;

[0051] (3) Turn on the refrigeration system, liquid CO 2 in CO 2 It flows out of the storage tank, and the biological enzyme bleach in the co-solvent tank is injected into the co-solvent inlet of the blender under the action of the liquid delivery pump, and enters the inlet of the pinhole conveyor through the co-solvent channel, and passes through the pinhole conveyor in the pinh...

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Abstract

The invention discloses a flax roving supercritical CO2 biological enzyme bleaching device and a bleaching method thereof. The bleaching method comprises the steps that flax roving is bleached for 30-120 minutes in supercritical CO2 fluid with dissolved bio-enzyme bleach, at a temperature of 25-65 DEG C, a pressure of 15-25 MPa, and CO2 fluid flow of 10-50 g/min. The enzyme bleaching agent contains 0.2-3% (o. w. f) xylanase and 0.2-5% (o. w. f) glucose oxidase. By the adoption of the bleaching method, the whiteness of the flax roving can reach 45-70%, the weight loss rate is 7-12%, the adhesive residue is 9-15%, a single fiber breaking tenacity is 6.5-13.5 cN/dtex, and the elongation at the breaking is 5-8.5%. By the flax roving supercritical CO2 biological enzyme bleaching device and the bleaching method, a clean bleaching production of flax roving is achieved using CO2 instead of aqueous medium, the use of a large amount of chemical reagents such as hydrogen peroxide and sodium hypochlorite is avoided; the whole bleaching process is free of filth and zero in emission, and the modern living concept of fashion and green for flax is expressed.

Description

technical field [0001] The invention belongs to the field of textile technology, and relates to a flax roving supercritical CO 2 Biological enzyme bleaching device and bleaching method. Background technique [0002] Flax fiber is the earliest high-quality plant fiber used by humans, accounting for 1.5% of the total natural fiber. Its chemical composition mainly includes cellulose, hemicellulose, pectin, lignin, waxy and nitrogenous substances, among which hemicellulose, lignin and pectin are difficult to remove, and the crystallinity and orientation degree of flax fiber molecules are relatively high. High, it is easy to affect the elongation, elasticity, clustering, softness and crimp of the fiber, which brings a lot of inconvenience to the flax fiber spinning and weaving process. Therefore, the bleaching of flax roving has always been a problem of concern to the hemp spinning industry. Over the years, a lot of research work has been based on solving this problem. It was ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06B9/06D06L4/40
CPCD06B9/06Y02P70/62
Inventor 郑来久张娟高世会郑环达杜冰闫俊刘秒苏耀华
Owner YIXING SUNSHINE LINEN TEXTILE CO LTD
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