Continuous treatment device and method suitable for high-flow meta-position aramid spinning bath lotion

The technology of a processing device and a processing method, which is applied in the field of chemical engineering, can solve the problems of lag in concentration control, instability, and the inability of the spinning bath to be cleaned, and achieve the effects of improving recovery efficiency, improving product quality, and reducing energy consumption.

Active Publication Date: 2012-09-12
上海舟汉纤维材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) In terms of spinning bath filtration, at present, plate and frame filtration, bag filter, and sintered mesh filtration generally used in aramid spinning bath filtration in aramid production companies have certain problems, such as spinning bath cannot Clean treatment, frequent replacement of filter cloth and unstable production, etc.;
[0006] (2) In terms of spinning bath process control, such as concentration control, intermittent manual sampling is generally used in China to measure the concentration of spinning bath solution with an Abbe refractometer to control the concentration. This method has a serious lag in concentration control and cannot be achieved at any time. Control and record at any time

Method used

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  • Continuous treatment device and method suitable for high-flow meta-position aramid spinning bath lotion
  • Continuous treatment device and method suitable for high-flow meta-position aramid spinning bath lotion
  • Continuous treatment device and method suitable for high-flow meta-position aramid spinning bath lotion

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Embodiment example

[0042] Further illustrate the substantive characteristics and remarkable progress of the invention through the following implementation examples, and the parts and percentages involved in the following examples are all parts by weight unless otherwise specified.

example 1

[0044] The flow rate is 50m 3 The concentration of meta-aramid fibers with a concentration of 45.8% produces turbid spinning bath liquid through the pipeline into the spinning bath receiving tank. The impurity content is 3.50% after testing. The quantitative translucent spinning bath liquid (impurity content is 0.94%) is pre-mixed and filtered into a centrifugal filter with a filtration accuracy of 50um. The filter screen is a dense mesh woven with metal wires, and the diameter of the warp and weft wires is 0.14mm× 0.10mm, the filtered clear liquid is sampled and tested to have an impurity content of 0.012%. It enters the spinning bath blending tank for further mixing and blending concentration. The impurity outlet of the filter is connected to the filter residue storage tank; Part of the pump circulates into the blending tank for remixing, the concentration is set at 42%, and the concentration measured by the concentration meter connected to the circulation pipeline is 42.1%;...

example 2

[0046] The flow rate is 42m 3The concentration of 53.2% of the meta-aramid fiber production turbid spinning bath enters the spinning bath receiving tank through the pipeline, and the impurity content is 4.32% after testing. The quantitative translucent spinning bath liquid (impurity content is 1.35%) is pre-mixed and filtered into a centrifugal filter with a filtration accuracy of 50um. The filter screen is a dense mesh woven with metal wires, and the diameter of the warp and weft wires is 0.14mm× 0.10mm, the filtered clear liquid is sampled and tested to have an impurity content of 0.018%. It enters the spinning bath blending tank for further mixing and blending concentration. The impurity outlet of the filter is connected to the filter residue storage tank; Part of the pump circulates into the blending tank for remixing, the concentration is set at 42%, and the concentration measured by the concentration meter connected to the circulation pipeline is 42.0%; part of it is qua...

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Abstract

The invention relates to a continuous treatment device and a continuous treatment method which are suitable for high-flow meta-position aramid spinning bath lotion. According to the key point, the continuous treatment device consists of a bath lotion receiving tank, a bath lotion delivery pump, a static mixer, a bath lotion blending tank, a bath lotion filtering machine, a bath lotion storage tank and a bath lotion condition control device, and is characterized in that high-concentration bath lotion enters the receiving tank from spinning yarns, and is premixed with low-concentration bath lotion in the static mixer; and the premixed bath lotion is filtered by the centrifugal filtering machine, and the filtered bath lotion is mixed uniformly, subjected to heat exchange and metered, and enters a spinning system. The spinning bath lotion prepared by the method is stable in concentration and temperature and low in content of impurities, and can meet the requirements of a spinning process and stable production.

Description

[0001] technical field [0002] The invention belongs to the field of chemical engineering, and specifically relates to a treatment device and method for continuous large-flow spinning bath liquid of high-performance fiber meta-aramid fiber. Background technique [0003] Aramid fiber belongs to aromatic polyamide fiber. It is mainly divided into two categories: meta-aramid fiber and para-aramid fiber in China. It is a kind of fiber with high strength, high modulus, low specific gravity, chemical solvent resistance, high temperature resistance and flame retardant High-performance materials are widely used in protection, filtration, aerospace, electromechanical, construction, automobile, sporting goods and other fields. [0004] In the 1960s and 1970s, my country began to develop aramid fiber. At present, aramid fiber has made great progress in my country, especially the output of meta-aramid fiber is the second in the world. In the process of initial continuous industrial pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D1/02D01D1/06D01D1/10
Inventor 金伟周文奎刘岳新
Owner 上海舟汉纤维材料科技股份有限公司
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