Short-process and zero-drainage production method of refining industrial hemp
A production method and technology of industrial hemp, which is applied in the chemical post-treatment of fibers, textiles and papermaking, mechanical treatment, etc., can solve the problems of low production efficiency, decreased production rate, and increased linters, so as to save energy and produce rate-enhancing effect
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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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