Filter material finishing liquid for improving filtering precision, and preparation method and application thereof

A technology of filtration accuracy and finishing liquid, which is applied in the processing of textile materials, chemical instruments and methods, liquid/gas/steam textile material processing, etc. It can solve the problems affecting the filtering effect, so as to improve the service life and interception ability , Simple formula and process

Inactive Publication Date: 2016-12-14
ANHUI YUANCHEN ENVIRONMENTAL PROTECTION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its unique three-dimensional structure, non-woven materials are more and more widely used in the field of filtration, especially the application of needle-punched filter materials

Method used

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  • Filter material finishing liquid for improving filtering precision, and preparation method and application thereof
  • Filter material finishing liquid for improving filtering precision, and preparation method and application thereof
  • Filter material finishing liquid for improving filtering precision, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The production technology of the filter material of the present embodiment comprises the following steps:

[0027] (1) After combing the filter material fiber, lay the net up and down on the base cloth;

[0028] (2) Reinforce filter fiber and base cloth by acupuncture;

[0029] (3) then carry out calendering and singeing and make filter material for subsequent use;

[0030] (4) above-mentioned filter material is immersed in finishing liquid, carries out impregnation finishing;

[0031] (5) After drying and finalizing, the finished product is rolled up. The drying temperature is from low to high and then to low, and the temperature range is between 180 ° C and the softening point of the fiber. Drying and shaping include multiple temperature zones, and the temperature of the multiple temperature zones goes from low to high, and then from high to low.

[0032] The multiple temperature ranges are 180-200°C, 200-220°C, 220-240°C, 240-260°C, 260-220°C, and 220-180°C in seq...

Embodiment 2

[0037] In this embodiment, the finishing solution used includes the following components by weight: 5% PTFE emulsion, 0.5% JFC penetrant, 0.5% Tween, 1% silicone oil, 1% silicone oil emulsion, and the balance is water.

[0038] Other implementations are the same as in Example 1.

Embodiment 3

[0040] In this embodiment, the finishing solution used includes the following components by weight: 6% PTFE emulsion, 1% JFC penetrant, 0.8% Tween, 2% silicone oil, 2% silicone oil emulsion, and the balance is water.

[0041] Other implementations are the same as in Example 1.

[0042] Such as figure 1 Shown is a photograph under a scanning electron microscope of a filter material that does not use a finishing solution. It can be seen from the figure that the fibers of the filter material are intertwined with each other and have clear gaps.

[0043] Such as figure 2 and image 3 As shown, after impregnated with the finishing liquid, there is a sheet-like film between the fibers of the filter material, and the gaps between the fibers are filled by the film, and the gaps become smaller. Obviously, after impregnating with the finishing liquid, the gaps between the fibers are significantly reduced, which will Has a better filtering effect. Before use, the filter material is f...

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PUM

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Abstract

The invention discloses filter material finishing liquid for improving filtering precision, and a preparation method and application thereof. The filter material finishing liquid comprises the following components: 5-7% of PTFE (Polytetrafluoroethylene) emulsion, 0.5-2% of JFC penetrant, 0.5-1% of tween, 1-3% of silicone oil, 1-3% of silicone oil emulsion, and the balance of water. Application of the filter material finishing liquid for improving filtering precision in filter material production is provided. The formula and process of the filter material finishing liquid are simple, thin film is formed among fiber gaps of a filter material through finishing, the ability of the filter material to intercept dust during dedusting is improved, the resisting ability of fibers under working conditions is enhanced, and the life of needle-spun filter material is prolonged.

Description

technical field [0001] The invention relates to a finishing solution for a non-woven needle-punched filter material, in particular to a filter material finishing solution for improving filtration precision, a preparation method and application. Background technique [0002] The flue gas produced by coal-fired boilers, metallurgical chemical industry and cement industry has high temperature, high dust concentration, and very complex composition, which seriously pollutes the air environment; SCR flue gas denitration method has the advantages of simple structure, high denitrification efficiency, reliable operation, and easy maintenance. , is the most reliable means for thermal power units to control nitrogen oxide emissions. During the denitrification process, part of the ammonia gas does not participate in the reaction, and is discharged with the flue gas to form ammonia escape; at the same time, the active component vanadium in the catalyst will play a catalytic role in the o...

Claims

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Application Information

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IPC IPC(8): D06M15/256D06M15/643D06B3/10B32B5/02B32B37/00B32B38/16
CPCD06M15/256B32B5/02B32B37/00B32B38/16D06B3/10D06M15/643
Inventor 刘海徐辉刘江峰周冠辰朱丹丹陆勤伟孔德成
Owner ANHUI YUANCHEN ENVIRONMENTAL PROTECTION SCI & TECH
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