Supercritical CO2 waterless boiling-off device and boiling-off method for flax roving

A supercritical and scouring technology, applied in the direction of sustainable manufacturing/processing, textile/flexible product manufacturing, equipment configuration for processing textile materials, etc., can solve problems such as high pollution and high energy consumption, and achieve the effect of increasing the separation area

Active Publication Date: 2017-06-06
YIXING SUNSHINE LINEN TEXTILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of high pollution and high energy consumption in the flax roving scouring process, the present invention provides a flax roving supercritical CO 2 Waterless scouring device and scouring method thereof, utilizing CO 2 Instead of water medium, the clean scouring production of flax roving is realized, which is of great significance for the technological transformation and upgrading of the flax spinning industry

Method used

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  • Supercritical CO2 waterless boiling-off device and boiling-off method for flax roving
  • Supercritical CO2 waterless boiling-off device and boiling-off method for flax roving
  • Supercritical CO2 waterless boiling-off device and boiling-off method for flax roving

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Effect test

Embodiment 1

[0036] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. The structure of the scouring kettle used in the following examples is the supercritical carbon dioxide cheese dyeing kettle in the Chinese patent whose publication number is CN102787459A, such as the dyeing kettle structure described in Example 1 in the publication.

[0037] A kind of flax roving supercritical CO of the present invention 2 Cooking device:

[0038] A flax roving supercritical CO 2 Anhydrous scouring device, including structural unit CO 2 storage tank 1, filter 2, booster pump 5, preheater 6, heater 7, scouring kettle 3, separation kettle 4 and magnetic circulation pump 8, wherein the CO 2 The storage tank 1, the filter 2, the booster pump 5, the preheater 6, the scouring kettle 3, and the separation kettle 4 are connected in sequence through pipelines, and the heater 7 is communicated with the upstream and downstream of the s...

Embodiment 2

[0051] The 5kg flax roving bobbins are sequentially connected and sleeved in the scouring kettle 8 .

[0052] During the scouring process, the refrigeration system is first turned on, and the liquid CO 2 in CO 2 The outflow from the storage tank 1 is filtered through the filter 2 to remove possible impurities, and then injected into the scouring equipment under the action of the booster pump 5; and then enters the supercritical state under the action of the preheater. From the bottom up to the flax cheese on it, it permeates and diffuses and then flows out; turn off the booster pump 5, swell the flax fiber statically at 35°C and 10MPa for 5 minutes, and perform the supercritical fluid swelling process of the flax roving. then CO 2 The fluid flows out of the scouring kettle; under the action of the magnetic circulation pump 8, the CO 2 The fluid enters the scouring kettle 3 again, raises the temperature to 80°C and the pressure to 15MPa, and circulates and scours the flax fi...

Embodiment 3

[0056] The 10kg flax roving bobbins are sequentially connected and set in the scouring kettle 8 .

[0057] During the scouring process, the refrigeration system is first turned on, and the liquid CO 2 in CO 2The outflow from the storage tank 1 is filtered through the filter 2 to remove possible impurities, and then injected into the interior of the scouring equipment under the action of the booster pump; and then enters the supercritical state under the action of the preheater. From the bottom up to the flax cheese on it, it permeates and diffuses and then flows out; turn off the booster pump 5, and swell the flax fiber under static conditions at 70°C and 12MPa for 10 minutes to perform the supercritical fluid swelling process of the flax roving. then CO 2 The fluid flows out of the scouring kettle; under the action of the magnetic circulation pump, the CO 2 The fluid enters the scouring kettle again, raises the temperature to 100°C and the pressure to 20MPa, and circulates...

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Abstract

The invention discloses a supercritical CO2 waterless boiling-off device and boiling-off method for flax roving. The structure of a separator and a boiling-off process are improved on the basis of the prior art, and when boiling-off is conducted, the flax roving is sequentially placed in a boiling-off kettle and subjected to boiling-off for 30-60 min under the conditions that the temperature ranges from 30 DEG C to 120 DEG C, the pressure ranges from 8 MPa to 20 MPa, and the CO2 fluid flow is 10-50 g / min when the supercritical CO2 state is achieved. For the flax roving obtained after boiling-off, the weight loss ratio is 7%-10%, the residual gum ratio is 8%-12%, the single fiber breaking strength is 6-12 cN / dtex, and the elongation at break is 4%-7%. According to the device and method, a water medium is replaced with CO2 to achieve clean boiling-off production of the flax roving, the overall boiling-off process is free of pollution or discharge, and the modern life ideas of fashional flax spinning and green flax spinning are embodied.

Description

technical field [0001] The present invention relates to a kind of supercritical CO 2 Fluid anhydrous scouring technology, especially related to a flax roving supercritical CO 2 An anhydrous scouring device and a scouring method thereof. Background technique [0002] Flax fiber is the earliest high-quality plant fiber used by humans, accounting for 1.5% of the total natural fiber. Its chemical composition mainly includes cellulose, hemicellulose, pectin, lignin, waxy and nitrogenous substances, among which hemicellulose, lignin and pectin are difficult to remove, and the crystallinity and orientation degree of flax fiber molecules are relatively high. High, it is easy to affect the elongation, elasticity, clustering, softness and crimp of the fiber, which brings a lot of inconvenience to the flax fiber spinning and weaving process. Therefore, the scouring of flax roving has always been a difficult problem that the hemp spinning industry pays attention to. Over the years, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06B9/02D06B9/06D06B23/18D06B23/20
CPCD06B9/02D06B9/06D06B23/18D06B23/20D06B19/00Y02P70/62
Inventor 郑来久张娟高世会郑环达闫俊马英冲刘秒苏耀华
Owner YIXING SUNSHINE LINEN TEXTILE CO LTD
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