Ramie degumming method utilizing a complex enzyme preparation

Abstract

The invention discloses a ramie degumming method utilizing a complex enzyme preparation, which comprises the following steps: bundling, cage charging, enzyme immersion, soda boil, ramie beating, rinsing, oil feed, oil-water separation, ramie joggling and ramie baking, wherein the enzyme immersion is as follows: firstly, heating water with the weight of 13-15 times heavier than ramie by vapor; regulating the pH value of the water between 8 and 9 by NaOH and then adding liquid complex enzyme with the weight of 2-4 percent of the ramie to the water; adding the ramie to the water and hermetically preserving the temperature of the water between 50 DEG C and 55 DEG C for 3-5 hours; the soda boil step is as follows: adding water with the weight of 13-15 times heavier than the ramie to a mixing barrel; then adding liquid NaOH, solid trimeric sodium phosphate and liquid water glass to the mixing barrel; then heating the water to make cooking materials and simultaneously drying the ramie and placing the ramie into a high-pressure cooking boiler; and then placing the cooking materials into the high-pressure cooking boiler to be cooked. The ramie degumming method has sufficient deguming matched with the subsequent soda boil procedure so that three procedures, such as enzyme scouring, ramie retting and ramie washing, of the traditional biological dugumming are combined into one procedure and the time is shortened to half of original time, thereby enhancing the production efficiency.

Description

technical field [0001] The invention relates to the textile industry, namely a method for degumming ramie by using a compound enzyme preparation. Background technique [0002] Ramie is a perennial herb of Urticaceae, with a fiber content of more than 60%. Its bast fibers are particularly long and strong, and it is an important raw material for the textile industry. However, there are a lot of gums attached to the ramie fibers, about Accounting for 25-30% of the total weight, it is mainly pectin, hemicellulose and lignin, etc. Therefore, to obtain industrially available fibers, degumming must be carried out. At present, the commonly used degumming method is the chemical caustic soda high-pressure scouring method. This method produces a large amount of acid-base wastewater and causes serious environmental pollution. Therefore, many companies are conducting enzymatic ramie degumming tests. The process flow is: binding→installation Cage→enzyme refining→retting→washing→soda cook...

AI Technical Summary

Problems solved by technology

[0008] Although the above method reduces the generation of acid-base wastewater and the cost of raw materials, it t