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Kieselguhr modification-based PP melt-blown filter element and preparation method thereof

A melt-blown filter element and diatomite technology, which is applied in separation methods, chemical instruments and methods, filtration separation, etc., can solve problems such as breeding microorganisms, filtering liquid pollution, and restricting the development of PP filter elements.

Inactive Publication Date: 2016-12-07
WUHU CHENGDELONG FILTER EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the existing PP filter element has an excellent filtering effect, after the PP filter element is used, a dirt layer will be formed on its surface. At the same time, microorganisms will grow in the dirt layer, which will pollute the filtered liquid. Therefore, this phenomenon greatly Limit the development of PP filter element

Method used

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  • Kieselguhr modification-based PP melt-blown filter element and preparation method thereof

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preparation example Construction

[0017] The invention provides a method for preparing a diatomite-based modified PP melt-blown filter element, comprising:

[0018] 1) spraying the polymer coating on the surface of diatomite, then drying, soaking in dilute sulfuric acid solution, and filtering to obtain activated diatomite;

[0019] 2) spray the silver nitrate solution and the hydrazine sulfate solution on the surface of the activated diatomite at the same time, and let it stand to prepare the silver-modified diatomite;

[0020] 3) decocting and filtering the Chinese herbal medicine in water to obtain the Chinese herbal medicine extract and the Chinese herbal medicine filter cake;

[0021] 4) In the presence of protective gas, place silver-modified diatomite at 240-255°C for calcination for 25-40 minutes, then place the calcined product in Chinese herbal medicine extract for impregnation and filtration to obtain Chinese herbal medicine-modified diatoms earth;

[0022] 5) PP (polypropylene), AES (acrylonitril...

Embodiment 1

[0041] 1) Polymer coating (containing polyvinyl alcohol, 1.2% by weight of p-aminophenol platinum, 0.7% by weight of palladium (II)-2-(5-bromo-2-pyridylazo)-5-diethylaminophenol ) is sprayed on the surface of diatomite, then dried at 125°C for 6h, placed in 50°C and 18% by weight of dilute sulfuric acid solution for 2h, filtered to obtain activated diatomite, wherein, diatomite, polymer The weight ratio of paint and dilute sulfuric acid solution is 100:4:200;

[0042] 2) Spray 5% by weight of silver nitrate solution and 2.5% by weight of hydrazine sulfate solution on the surface of activated diatomite at the same time, and let it stand at 30°C for 5h to prepare silver-modified diatomite, wherein activated diatomite, The weight ratio of silver nitrate solution and hydrazine sulfate solution is 100:7:12;

[0043] 3) Mix lemongrass, platycodon, aloe vera, lotus pod, fennel, Poria cocos bark, reed root, chicken vine, magnolia officinalis and water according to the weight of 100:2...

Embodiment 2

[0047] 1) Polymer coating (containing polyvinyl alcohol, 0.8% by weight of p-aminophenol platinum, 0.2% by weight of palladium (II)-2-(5-bromo-2-pyridylazo)-5-diethylaminophenol ) is sprayed on the surface of diatomite, then dried at 120°C for 5h, placed in 45°C and 15% by weight of dilute sulfuric acid solution, soaked for 1h, and filtered to obtain activated diatomite, wherein, diatomite, polymer The weight ratio of paint and dilute sulfuric acid solution is 100:3:150;

[0048] 2) Spray 4% by weight of silver nitrate solution and 2% by weight of hydrazine sulfate solution on the surface of activated diatomite at the same time, and let it stand at 25°C for 4h to obtain silver-modified diatomite, wherein activated diatomite, The weight ratio of silver nitrate solution and hydrazine sulfate solution is 100:5:10;

[0049] 3) Mix lemongrass, platycodon, aloe vera, lotus pod, fennel, Poria cocos bark, reed root, chicken vine, magnolia officinalis and water according to the weight...

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Abstract

The invention discloses a kieselguhr modification-based PP melt-blown filter element and a preparation method thereof. The method comprises the following steps: (1) coating the surface of kieselguhr with a polymer coating, and then performing drying, soaking in a dilute sulfuric acid solution and filtration to obtain activated kieselguhr; (2) simultaneously spraying a silver nitrate solution and a hydrazine sulfate solution to the surface of the activated kieselguhr, and stewing to obtain silver-modified kieselguhr; (3) decocting Chinese herbal medicines in water, and filtering to obtain a Chinese herbal medicine extracting solution and a Chinese herbal medicine filter cake; (4) with the existence of protection gas, calcining the silver-modified kieselguhr, then soaking a calcined product into the Chinese herbal medicine extracting solution, and filtering to obtain Chinese herbal medicine-modified kieselguhr; (5) blending PP, AES, methyl methacrylate, alkyl glycoside, paraffin, poly-hexamethyl guanidine phosphate, expanded vermiculite, D-glyceraldehyde, maltose, chloroplatinic acid, the Chinese herbal medicine-modified kieselguhr and the Chinese herbal medicine filter cake, and performing melt blowing to obtain the PP melt-blown filter element. The PP melt-blown filter element has excellent filtering and antibacterial effects.

Description

technical field [0001] The invention relates to a filter core, in particular to a diatomite-based modified PP melt-blown filter core and a preparation method thereof. Background technique [0002] The filter element is a filter device and the core component of the filter. Filter elements are mainly used in the following fields: electronics industry: pre-filtration of reverse osmosis water system, pre-filtration of deionized water system; food industry: filtration of beverage, beer, mineral water, etc.; chemical industry: filtration of organic solvents, ink, etc.; pharmaceutical industry: Filtration of pharmaceuticals, biological and plasma products, compressed air and gas filtration; others: filtration of electroplating solutions, metal cutting fluids, photosensitive resists and magnetic media, etc. [0003] According to the manufacturing process, there are mainly two types of filter elements: PP filter element and wire wound filter element; among them, PP filter element is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14
CPCB01D39/14B01D2239/0442B01D2239/10
Inventor 胡德华
Owner WUHU CHENGDELONG FILTER EQUIP CO LTD
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