Microorganism retting flax method for crudefiber crops

Abstract

The invention provides a method for retting flax with microbe mild water for bast-fiber crops, belonging to a retting technology for the bast-fiber crops. The method comprises the following steps of: adding degumming bacteria into a retting vessel according to 0.5 to 1.0 per thousand of the total weight of aqueous solution; heating up to 30 to 40 DEG C after injecting water to 100 percent of the total weight of the aqueous solution; and finishing retting after 40 to 50 hours. The industrial production of the degumming bacteria is completed via primary strain culture, secondary strain culture and industrial production. The method has the characteristics of short retting fermentation period, high percentage of fiber extraction, high fiber stress, small water consumption, low energy consumption, retting water economization, zero drainage of retting water and no environmental pollution.

Description

Microbial warm water retting method for hemp crops technical field The invention belongs to the technology of hemp crop retting. Background technique At present, the warm water retting method adopted in our country is: firstly, the original stems are graded according to the requirements, and then the original stems of the same grade are manually bundled into small bundles of about three kilograms, and the bundled hemp stems are put into the retting pool , then the retting pool is filled with clear water and soaked for 4-8 hours (called "head-over water"), after 4-8 hours the water in the retting pool is drained, and then the retting pool is filled with clear water (called "head-over water"). It is "two-time water"), after filling, heat the retting pool to the required temperature (generally 30-37°C) with steam, and use the sensory method when judging the end point of retting. The disadvantages of the above method are: 1. The fermentation period of warm water retting is lo...

AI Technical Summary

Problems solved by technology

The disadvantages of the above method are: 1. The fermentation period of warm water retting is long, and the retting time of different grades of flax is different. The 1-3 grade flax is about 110-120 hours, and the 4-5 grade flax is 90-110 hours; The retting time of hemp is generally about 110 hours for domestic varieties; 2. The traditional warm water retting method has a low hemp yield, and the fiber strength produced by retting is low; 3. The traditional warm water retting method consumes a lot of water and consumes High performance: Retting with water for two times consumes a lot of water, and at the same time retting must maintain a constant temperature. To achieve this condition, steam is used to supplement the temperature, and a large amount of steam is consumed to maintain a constant temperature; 4. The first pass of retting water And the discharge of the finished water into the environment will pollute the environment

In order to solve the above problems, Heilongjiang University proposed a method of flax microbial rapid degumming warm water retting in 2004, which overcomes some defects and deficiencies in the traditional retting technology, but its process is complicated, soaking processing time is long, production efficiency is low, The discharge of retting water has not been reduced, and the problems of environmental pollution have not been resolved