Ramie Degumming Process by Air Explosion at High Temperature

Abstract

The invention relates to a ramie high-temperature gas explosion degumming process. The process applies degumming process, and the degumming process applies alkali solution. The degumming process is characterized in that degumming process includes unpacking and unbinding process, feeding process, first high-temperature gas explosion process, first extruding process, second high-temperature gas explosion process, second extruding process, third high-temperature gas explosion process, and third extruding process, wherein a high-temperature high-pressure flushing method is applied; ramie is flushed under the alkali solution in the first high-temperature gas explosion process, the second high-temperature gas explosion process and the third high-temperature gas explosion process; the alkali solution temperature is kept at 80-90 DEG C or 95-100 DEG C; the alkali solution pressure is kept at 0.8-1.0 MPa or 1.0-1.2 MPa; the heat preservation and pressure maintaining times of the alkali solution are 3-5 minutes or 5-10 minutes. The process cancels the binding, packing, softening, and loosening processes, shortens the technical flow, promotes quality of the degummed ramie, improves production efficiency, decreases cost and reduces environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of production and processing of ramie fiber raw materials, and relates to a ramie degumming process, in particular to a ramie high-temperature gas explosion degumming process. Background technique [0002] As we all know, ramie is one of the important textile raw materials. As a textile raw material, it must be degummed to remove the ramie glue (including hemicellulose, pectin, lignin, fat, wax and other carbohydrates). [0003] In recent years, those skilled in the art have proposed some relevant ramie degumming processes through research: [0004] As disclosed in Chinese patent document CN101012575A (application number 200710078167.X) "A Process for Degumming Ramie", the method is to put the raw hemp into a mixed solution 9 to 12 times its weight for cooking, and the mixed solution is sodium hydroxide The content of oxalate is 5~8g / L, the content of oxidant is 5~10g / L, the content of oxalate is 3~8g / L, t...

AI Technical Summary

Problems solved by technology

The applicant found through research that this method shortens the length of the fiber and reduces the overall strength of the ramie fiber. The whole ramie degumming process is complicated, and the ramie needs to be segmented and smelted twice, which is easy to produce mess and increases the labor intensity of the workers. Each scouring and washing takes 4~5 hours, and the whole process takes a lot of time, which reduces the production efficiency