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Method and device for biological degumming of ramie

A technology of biological degumming and ramie, which is applied in the fields of plant raw materials, bacterial retting, textiles and paper making, etc., can solve the problems of environmental pollution, waste liquid pollution, shorten the degumming time, etc., so as to improve the degumming quality, improve the fermentation efficiency, shorten the The effect of degumming time

Inactive Publication Date: 2010-10-13
湖南润久科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chemical degumming is not only labor-intensive, wastes a lot of resources, and the degumming quality is poor, but also because of the use of a large amount of chemical reagents such as acids, alkalis, and oxidants, the waste liquid generated after degumming will cause serious environmental pollution.
[0004] In order to improve the quality of degumming, the prior art also discloses many biological degumming methods, as the Chinese patent No. 01106844.2 discloses a process for degumming ramie with ramie pectinase, including strain selection, strain cultivation, shake flask Fermentation, preparation of degumming enzyme solution, ramie binding into cages, soaking enzyme treatment, scouring with alkali and auxiliary agents, washing hemp, kneading hemp, rinsing, oil staining, dehydration, drying, etc. 13 processes, through this method degumming to obtain The quality of dry hemp has been improved, but the degumming process only replaces the traditional pickling treatment with enzyme soaking, and still needs to be boiled with alkali and auxiliary agents, which will produce a large amount of waste liquid and pollute the environment. In this method, the degumming enzyme The preparation time of the liquid is longer, which increases the cost of degumming
[0005] The Chinese patent document whose patent number is 95112564 discloses a biological degumming process, directly inoculates the degumming strains on the raw ramie, ferments the ramie as the substrate to produce degumming enzymes, and the produced degumming enzymes produce enzymes with the colloidal substances on the ramie Accelerate the reaction, separate the colloidal substance from the cellulose, this method shortens the degumming time and reduces the production cost, but the contact between the degumming bacteria and the ramie is uneven, which makes the quality of the ramie fermentation uneven, which leads to the quality of the degumming unstable

Method used

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  • Method and device for biological degumming of ramie
  • Method and device for biological degumming of ramie
  • Method and device for biological degumming of ramie

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Re-drying the ramie from Yuanjiang, Hunan, so that the moisture content of the ramie is 10%;

[0069] use as figure 1 The dehulling machine shown dehulls and pre-fibers the dried fresh ramie;

[0070] Put the raw hemp after peeling and pre-fibering into the hemp pot, the thickness of the hemp in the hemp pot is 60mm-120mm; move the hemp pot into the fermentation equipment disclosed in Chinese patent document 200620050490.7, and the weight of the raw hemp in the fermentation equipment is 500kg;

[0071] Erwinia carrot soft rot was expanded and then diluted with tap water to a viable count of 10 7 cfu / mL bacterial suspension, according to the bath ratio of 1:10, soak the raw hemp in the fermentation equipment when the water temperature is 37 ° C and pH is 4.5; then adjust the temperature in the fermentation equipment to 37 ± 1 ° C, so that The raw hemp in the fermentation equipment is shaken and fermented at a speed of 60r / min for 8 hours;

[0072] After the fermented ...

Embodiment 2

[0076] The ramie produced in Yuanjiang, Hunan is dried again, so that the moisture content of ramie is 12%;

[0077] use as figure 1 The dehulling machine shown dehulls and pre-fibers the dried fresh ramie;

[0078] Put the raw hemp after peeling and pre-fibering into the hemp pot, the thickness of the hemp in the hemp pot is 150mm; move the hemp pot into the fermentation equipment disclosed in Chinese patent document 200620050490.7, the weight of the raw hemp in the fermentation equipment is 600kg;

[0079] Erwinia carrot soft rot was expanded and then diluted with tap water to a viable count of 10 7 cfu / mL bacterial suspension, according to the bath ratio of 1:10, soak the raw hemp in the fermentation equipment when the water temperature is 37 ° C and pH is 4.5; then adjust the temperature in the fermentation equipment to 37 ± 1 ° C, so that The raw hemp in the fermentation equipment is shaken and fermented at a speed of 160r / min, and fermented for 10h;

[0080] Wash and ...

Embodiment 3

[0084] The ramie produced in Yuanjiang, Hunan is dried again, so that the moisture content of ramie is 11%;

[0085] use as figure 1 The dehulling machine shown dehulls and pre-fibers the dried fresh ramie;

[0086] Put the raw hemp after peeling and pre-fibering into the hemp pot, the thickness of the hemp in the hemp pot is 100mm; move the hemp pot into the fermentation equipment disclosed in Chinese patent document 200620050490.7, the weight of the raw hemp in the fermentation equipment is 400kg;

[0087] Erwinia carrot soft rot was expanded and then diluted with tap water to a viable count of 10 7cfu / mL bacterial suspension, according to the bath ratio of 1:10, soak the raw hemp in the fermentation equipment when the water temperature is 37 ° C and pH is 5.5; then adjust the temperature in the fermentation equipment to 37 ± 1 ° C, so that The raw hemp in the fermentation equipment is shaken and fermented at a speed of 130r / min, and fermented for 9h;

[0088] After the f...

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Abstract

The invention provides a method for the biological degumming of ramie, which comprises the following steps of: c peeling and pre-opening fibers of the dried fresh ramie to obtain raw ramie; soaking and inoculating degumming bacteria subjected to amplification culture in the raw ramie and carrying out oscillation fermentation on the mixture at a rotation speed of 50 to 200 revolutions per minute to obtain fermented ramie; carrying out washing and fiber opening on the fermented ramie to obtain primary ramie; and carrying out oil soaking, dehydration and drying on the primary ramie to obtain fine ramie. The invention also provides a device for the degumming on the ramie. Compared with the prior art, the method provided by the invention combines a mechanical processing method with a biological degumming method, firstly carries out fiber pre-opening to improve the efficiency of subsequent biological degumming and then carries out washing and fiber opening after completing biological degumming to realize complete separation of gelatinous substance and cellulose, shortens degumming time and improves degumming efficiency. The obtained fine dried ramie has stable quality and higher fiber strength.

Description

technical field [0001] The invention relates to the technical field of ramie degumming, in particular to a ramie biological degumming method and device. Background technique [0002] Ramie is a perennial herbaceous plant, and its phloem contains a large amount of ramie fibers. Ramie fiber is an important textile raw material, but ramie must be degummed to remove colloidal substances such as pectin, hemicellulose, and lignin that are glued to cellulose to obtain ramie fiber that can be used in the textile industry. [0003] The traditional degumming of ramie is based on the different stability of cellulose and colloidal substances to chemical reagents such as acid and alkali, through unpacking and unbundling, cage loading, scouring, softening, acid rinsing, oiling, deoiling, and drying. and other processes to separate the cellulose from the colloidal substances to obtain fine-dried hemp. Chemical degumming is not only labor-intensive, wastes a lot of resources, and the qual...

Claims

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Application Information

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IPC IPC(8): D01C1/04D01C1/00D01B1/10C12S3/06
Inventor 杨政曾晓希仓道平韦立谢良甫
Owner 湖南润久科技有限公司
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