Deoiling and degumming treatment method for waste bave

Abstract

The invention relates to a deoiling and degumming treatment method for waste bave. The method comprises the following steps of: A, deoiling and degumming treatment, namely, adding a leaching solution which is a isopropyl alcohol aqueous solution containing sodium carbonate or sodium silicate at a certain concentration to the waste bave, and reacting for 40 to 120 minutes under 70 to 100 DEG C, wherein the concentration of sodium carbonate or sodium silicate in the leaching solution is 3 to 6g / L, and the volume concentration of isopropyl alcohol is 20 to 70%, and the ratio of the mass of the waste bave to the volume of the leaching solution is 1g: 30 to 60mL; B, washing with water, namely, taking out the waste bave after the reaction is finished, and washing with water; C, drying, namely, drying the waste bave washed with water, wherein the waste bave is long silk waste or silk floss. The method has a good deoiling and degumming effect, is short in treatment time and low in temperature; after the deoiling and degumming, both the residual oil ratio and residual glum ratio of the long silk waste easily reach the national standard in which the residual glum ratio of refined waste silk is 3 to 7%, and the residual oil ratio is not more than 0.55%; moreover, the whiteness of the long silk waste is obviously improved; the residual oil ratio of the silk floss is far less than 1.5% of that as specified by the national standard, and the residual glum ratio is relatively small.

Description

technical field [0001] The invention relates to a method for deoiling and degumming the by-product waste cocoons or silk cotton produced in the silk reeling process. Background technique [0002] Silk spit is divided into long spit and short spit. Long spit is a by-product produced during the silk reeling process. The processed long spit has neat length, average quality, slightly yellowish color, tough and long fiber. Long spit contains a lot of glue, high oil content, and many impurities such as wax, inorganic matter, and dirt. Prolonged vomiting plays a very important role in life after a series of treatments. The quality of the long spit scouring effect is directly related to the quality of silk spinning, the cost of subsequent processing, and the quality of silk spinning products, which in turn affects the economic benefits of the enterprise. [0003] Silk floss sheet is a thin sheet made of cocoons and cocoon layers of thick skin cocoons and pupal linings that canno...

AI Technical Summary

Problems solved by technology

The current silk floss treatment methods can generally control the residual oil rate of silk floss within the standard range, but the residual rubber rate is relatively large

However, the high residual glue rate of silk floss will lead to easy entanglement and adhesion between fibers after long-term use of silk floss, resulting in a decrease in the elasticity, warmth retention and performance of silk floss. It is necessary to frequently turn over and loosen the cotton tire to make the silk fibers dispersed and fluffy , to regain the characteristics of lightness, softness, comfort and good warmth retention, which brings great inconvenience to users

[0004] At present, the method of degreasing and degumming of long spit and silk cotton sheet, or using water as the medium, has good degumming effect, but poor deoiling effect. Therefore, it must be supplemented with additives such as sodium carbonate and surfactant to improve degreasing effect; or use organic solvents such as gasoline and petroleum ether as the medium, the deoiling effect is good, but the degumming effect is poor. Therefore, after deoiling, degumming is often required, the process is long, the efficiency is low, and the organic solvent causes environmental pollution

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