Method for recovering white oil in ultra-high molecular weight polyethylene fiber production process

A polyethylene fiber and ultra-high molecular weight technology, which is applied in the fields of rayon recycling, fiber chemical characteristics, refined hydrocarbon oil, etc., can solve the problem of low decolorization efficiency, achieve the effect of improving decolorization effect, increasing interlayer distance, and improving adsorption effect

Active Publication Date: 2022-01-28
ZHEJIANG AEGIS NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to improve the problem of low decolorization efficiency of the current conventional yellowing white oil decolorization process, this application provides a recovery method of white oil in the production process of ultra-high molecular weight polyethylene fiber

Method used

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  • Method for recovering white oil in ultra-high molecular weight polyethylene fiber production process
  • Method for recovering white oil in ultra-high molecular weight polyethylene fiber production process
  • Method for recovering white oil in ultra-high molecular weight polyethylene fiber production process

Examples

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preparation example 1

[0068] The preparation example of the present application first discloses a microporous material, which is modified activated carbon, and the raw materials required for each modified activated carbon are as follows:

[0069] Activated carbon 8g;

[0070] Oxidant 230g;

[0071] 3-Chloro-2-hydroxypropyltrimethylammonium chloride 3g.

[0072] Since the main function of the oxidizing agent is to oxidize activated carbon, although there are differences in the oxidation effects of various oxidizing agents on activated carbon, those skilled in the art can select the oxidizing agent according to the requirements and actual processes. In this preparation example, nitric acid is selected as the oxidizing agent, and the concentration of nitric acid is 10wt%.

[0073] The above-mentioned modified activated carbon is prepared by the following process:

[0074] Weigh each raw material according to the above ratio, first put 3-chloro-2-hydroxypropyltrimethylammonium chloride into nitric a...

preparation example 2

[0077] The difference between this preparation example and preparation example 1 is that the raw materials needed for each preparation of a modified activated carbon are as follows:

[0078] Activated carbon 9g;

[0079] Oxidant 250g;

[0080] 3-Chloro-2-hydroxypropyltrimethylammonium chloride 4.5g.

[0081] The preparation process of the above-mentioned modified activated carbon is the same as that of Preparation Example 1, and the oxidized activated carbon after suction filtration is washed to neutral, using about 2.2 L of deionized water.

preparation example 3

[0083] The difference between this preparation example and preparation example 1 is that the raw materials needed for each preparation of a modified activated carbon are as follows:

[0084] Activated carbon 10g;

[0085] Oxidant 270g;

[0086] 3-Chloro-2-hydroxypropyltrimethylammonium chloride 6g.

[0087] The preparation process of the above-mentioned modified activated carbon is the same as that of Preparation Example 1, and the oxidized activated carbon after suction filtration is washed to neutral, using about 2.3 L of deionized water.

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Abstract

The invention relates to a method for recovering white oil in an ultra-high molecular weight polyethylene fiber production process, and belongs to the field of ultra-high molecular weight polyethylene fiber production, the method comprises the following process steps: S1, filtration: using a microporous material as a filler to adsorb and remove solid impurities in the white oil to obtain filtered white oil; and S2, decolorizing, specifically, adsorbing and decolorizing the filtered white oil obtained in the step S1 by using a decolorizing agent as a filler to obtain the recycled white oil. According to the method for recovering the white oil, the two-step decolorization process of first filtering for preliminary decolorization and then further adsorption decolorization is adopted, and the microporous material and the decolorizing agent are both in a filler form, so that the overall decolorization efficiency is improved.

Description

technical field [0001] The application relates to the field of ultra-high molecular weight polyethylene fiber production, in particular to a method for recovering white oil in the production process of ultra-high molecular weight polyethylene fiber. Background technique [0002] Ultra-high molecular weight polyethylene fiber (also called UHMWPE) is an emerging protective material. Compared with common alloy steel materials that are prone to rust and ceramic composite materials with higher density, ultra-high molecular weight polyethylene fiber has incomparable comparative advantage. The specific strength of ultra-high molecular weight polyethylene fiber is more than ten times that of steel under the same size, and its specific modulus is currently second only to carbon fiber. Strong impact resistance and cut resistance. In addition, ultra-high molecular weight polyethylene fiber has excellent anti-ultraviolet radiation performance, anti-neutron and γ-ray, and corrosion res...

Claims

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Application Information

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IPC IPC(8): D01F13/04C10G25/00
CPCD01F13/04C10G25/00Y02P70/62
Inventor 李扬亓秀斌何飞
Owner ZHEJIANG AEGIS NEW MATERIALS CO LTD
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