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A short-process zero-drainage production method for refined industrial hemp

A production method and technology of industrial hemp, which are applied in the chemical post-processing of fibers, textile and papermaking, fiber mechanical separation, etc., can solve the problems of low production efficiency, decreased production rate, increased short staple, etc., and achieve energy saving, manufacturing The effect of increasing the success rate

Active Publication Date: 2021-07-02
苏州麻朵纺织科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After degumming and bleaching, the bundled fibers of industrial hemp after subsequent opening and carding lead to an increase in short fibers and a decrease in the production rate
Degumming, opening after bleaching, and processing after carding also increase the cost of labor and energy, especially before opening and carding. Health care processing is required. Generally, the humidification time is 2 to 3 days in summer and 7 to 10 days in winter. , the production efficiency is very low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The industrial hemp with more than 36 public counts is selected to be hemp, and after the drafting, impurity removal, and carding of the jute recycling machine and the combing machine, it becomes the raw material for subsequent degumming and bleaching processes.

[0027] 1) The industrial hemp with more than 36 public branches processed by the jute returning machine and combing machine is directly put into the high-temperature and high-pressure stainless steel bleaching tank, and the bath ratio (the mass ratio of fiber to water) is 1:12, in order Sequentially add the bleach accelerator MDC 1.5 g / liter and run for 5 minutes, then add the fiber protection agent MBS 6 grams / liter and 27% concentration of hydrogen peroxide 35 grams / liter. Raise the temperature to 135°C at a rate of 1-3°C per minute and keep it warm for 5 minutes, then directly release the pressure at high temperature to discharge the liquid, and discharge the processed bleaching residue to the auxiliary vat....

Embodiment 2

[0033]The industrial hemp with more than 36 public counts is selected to be hemp, and after the drafting, impurity removal, and carding of the jute recycling machine and the combing machine, it becomes the raw material for subsequent degumming and bleaching processes.

[0034] 1) Put the industrial hemp with more than 36 public branches processed by the jute returning machine and combing machine into hemp and directly put it into the high-temperature and high-pressure stainless steel bleaching tank. The bath ratio (the mass ratio of fiber to water) is 1:13. The storage solution of the previous batch of head cylinders degummed and bleached in the same bath, when the water is insufficient, add fresh water, first add the bleach accelerator MDC 1.2 g / L and run for 5 minutes, then add the fiber protection agent MBS 6 g / L, 27% The concentration of hydrogen peroxide is 25 grams per liter. Raise the temperature at a rate of 1-3°C per minute to 135°C and keep it warm for 6 minutes, the...

Embodiment 3

[0040] Select 32 metric industrial hemp to beat into hemp, and after drafting, impurity removal, and carding processing by jute recycling machine and combing machine, it becomes the raw material for subsequent degumming and bleaching processing.

[0041] 1) The industrial hemp of 32 public branches processed by the jute recycling machine and the combing machine is directly put into the high-temperature and high-pressure stainless steel bleaching tank, and the bath ratio (the mass ratio of fiber to water) is 1:15, in order Add 2.5 grams / liter of bleaching accelerator MDC and run for 5 minutes, then add 6 grams / liter of fiber protection agent MBS and 35 grams / liter of hydrogen peroxide at a concentration of 27%. Raise the temperature at a rate of 1-3°C per minute to 135°C and keep it warm for 7 minutes, then directly release the pressure at high temperature and discharge the liquid, and discharge the processed bleaching liquid to the auxiliary tank. Then hang the fiber cake afte...

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Abstract

The invention relates to a short-process zero-drainage production method for fine chemical industrial hemp. After the hemp is processed by a jute returning machine and a combined carding machine, drafting, impurity removal, and carding, it is directly degummed and bleached in a non-drained continuous tank. , softening processing; degumming and bleaching in the same bath, the bath ratio is 1:5-20, the bleaching temperature in the high-temperature and high-pressure bleaching tank is 98-135°C, and the bleaching holding time is 5-60 minutes; degumming and bleaching process in the same bath 2 ~3 times, after degumming and bleaching, it is dried, and then it is softened in an undrained continuous tank, and after softening, it is dried by microwave or low temperature to become a finished product. The whiteness of the refined industrial hemp of the present invention is greater than 60%, the splitting degree of industrial hemp raw materials below 36 public branch is over 1500 after processing, and the splitting degree of industrial hemp raw material above 36 public branch is above 2000 after processing. It can be directly used for blending with cotton, tencel, modal, viscose, wool and other fibers to make linen-containing blended yarn.

Description

technical field [0001] The invention relates to the field of textiles, in particular to a short-flow zero-drainage production method of refined industrial hemp. Background technique [0002] The planting of industrial hemp can improve the soil, and the growth period of industrial hemp planting for fiber is short, which can replace some cotton planting and save chemical fertilizers and pesticides. The industrial hemp used for fiber is harvested in time and left in the ground for natural degumming processing by rain and dew. After degumming by rain and dew, it is processed into hemp. The fiber hemp becomes the raw material for subsequent textile mills. The quality of hemp hemp is obviously better than that of second crude fiber, so it can be used as high-grade raw material. The pectin and lignin content of industrial hemp produced by the rain-dew method is high, resulting in high discharge of subsequent degumming and bleaching sewage, high COD and BOD indicators of sewage, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01B1/14D01C1/00
CPCD01B1/14D01C1/00
Inventor 邱平
Owner 苏州麻朵纺织科技有限公司
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