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PP melt-blown filter element based on modified bentonite and preparation method thereof

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

Inactive Publication Date: 2017-01-04
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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  • PP melt-blown filter element based on modified bentonite and preparation method thereof

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preparation example Construction

[0017] The present invention provides a kind of preparation method based on bentonite modified PP melt-blown filter element, comprising:

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

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

[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 the silver-modified bentonite at 240-255° C. for calcination for 25-40 minutes, and then place the calcined product in Chinese herbal medicine extract for impregnation and filtration to obtain Chinese herbal medicine-modified bentonite;

[0022] 5) PP (polypropylene...

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 bentonite, then dried at 125°C for 6h, placed in 50°C and 18% by weight dilute sulfuric acid solution, soaked for 2h, and filtered to obtain activated bentonite, wherein the bentonite, polymer coating, dilute sulfuric acid solution The weight ratio 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 bentonite at the same time, and leave it at 30°C for 5 hours to obtain silver-modified bentonite, wherein activated bentonite, silver nitrate solution, and hydrazine sulfate The weight ratio of the solution is 100:7:11;

[0043] 3) Combine lemongrass, Artemisia annua, licorice, flavescens, fennel, Poria bark, red peony root, red euphorbia, Magnolia officinalis and water according ...

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 bentonite, 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 bentonite, wherein the bentonite, polymer coating, dilute sulfuric acid solution The weight ratio is 100:3:150;

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

[0049] 3) Combine lemongrass, Artemisia annua, licorice, flavescens, fennel, Poria bark, red peony root, red euphorbia, Magnolia officinalis and water according to the rat...

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Abstract

The invention discloses a PP melt-blown filter element based on modified bentonite and a preparation method thereof. The preparation method comprises the steps that 1, a polymer coating is applied to the surface of bentonite, then drying is performed, soaking is performed in a dilute sulphuric acid solution, and activated bentonite is obtained through filtration; 2, a silver nitrate solution and a hydrazine sulfate solution are simultaneously sprayed to the surface of the activated bentonite, and standing is performed to obtain silver modified bentonite; 3, a Chinese herbal medicine is decocted in water, and filtration is performed to obtain a Chinese herbal medicine extracting solution and a Chinese herbal medicine filter cake; 4, in the presence of protection gas, the silver modified bentonite is calcined, a calcination product is dipped in the Chinese herbal medicine extracting solution, and filtration is performed to obtain Chinese herbal medicine modified bentonite; 5, PP, AES, methyl methacrylate, alkyl glycoside, paraffin, poly hexamethyl guanidine phosphate, expanded vermiculite, D-glyceraldehyde, maltose, chloroplatinic acid, Chinese herbal medicine modified bentonite and the Chinese herbal medicine filter cake are mixed and melt-blown to obtain a 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 bentonite-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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IPC IPC(8): B01D39/14
CPCB01D39/14B01D2239/0442B01D2239/10
Inventor 胡德华
Owner WUHU CHENGDELONG FILTER EQUIP CO LTD