Preparation method for water-repelling grease-proofing easy-ash-removal filter material

A technology of water and oil repellency and filter material, which is applied in separation methods, chemical instruments and methods, filtration and separation, etc. It can solve the problems of impregnation in finishing process, inability to adapt to oil, and water is easy to paste bags, etc., to achieve uniform distribution and increased degree of freedom , The effect of simple operation method

Inactive Publication Date: 2012-03-28
JIANGSU DINGSHENG FILTER BAG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a finishing method for bag-type dedusting filter material used in coal-fired boilers, garbage incineration, iron and steel smelting, calcium carbide chemical industry and other industrial flue gas purification, so as to solve the problem that the existing filter material cannot adapt to the existing working conditions containing oil and water. The practical problems of easy-to-paste bag

Method used

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  • Preparation method for water-repelling grease-proofing easy-ash-removal filter material
  • Preparation method for water-repelling grease-proofing easy-ash-removal filter material
  • Preparation method for water-repelling grease-proofing easy-ash-removal filter material

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Example one

[0020] Filter material used: non-alkali glass fiber twill woven fabric, product standard specification model: GE·W·T-400-h-o.

[0021] Preparation of dipping emulsion: Place the dipping liquid in the dipping tank according to the proportions in Table 1, and stir fully under normal temperature and pressure to make it uniform.

[0022] Table 1 The proportion of GE·W·T-400-h-o impregnation solution

[0023] Ingredients formula

[0024] Finishing process: immerse the element filter material in sequence --- tentering and finalizing --- drying. Oven temperature: pre-baking at 160℃, baking at 210℃, and it takes 15min to move cloth at a constant speed.

[0025] Technical indicators: See Table 2 for the technical indicators of the filter material's water-repellent, oil-repellent and easy-cleaning effect and the comparison with the traditional process.

[0026] Table 2 Comparison of technical indexes of GE·W·T-400-h-o this invention and traditional technology

[0027]

Example Embodiment

[0028] Example two

[0029] Filter material used: polyester needle felt, product standard specification model: PET·NW-500-h-o.

[0030] Preparation of dipping emulsion: Place the dipping solution in the dipping tank according to the proportions in Table 3, and fully stir it under normal temperature and pressure to make it uniform.

[0031] Table 3 The proportion of PET·NW-500-h-o impregnation solution

[0032] Ingredients formula

[0033] Finishing process: immerse the element filter material in sequence --- tentering and finalizing --- drying. Oven temperature: pre-baking at 105°C, baking at 125°C, and it takes 15 minutes to move cloth at a constant speed. The hot pressing temperature is 135℃.

[0034] Technical indicators: See Table 4 for the technical indicators of the filter material of the present invention for its water repellent, oil-repellent and easy-cleaning effect and the comparison table with the traditional process.

[0035] Table 4 Comparison of technical indicators of...

Example Embodiment

[0037] Example three

[0038] Filter material used: polyphenylene sulfide and polyimide blended needle felt, product standard specification model: PPS+P84·NW·PPS-500-h-o.

[0039] Preparation of dipping emulsion: Place the dipping solution in the dipping tank according to the proportions in Table 5, and fully stir it under normal temperature and pressure to make it uniform.

[0040] Table 5 PPS+P84·NW·PPS-500-h-o impregnating liquid ratio

[0041] Ingredients formula

[0042] Finishing process: immerse the element filter material in sequence --- tentering and finalizing --- drying. Oven temperature: Pre-baking at 130°C, baking at 150°C, and it takes 16 minutes to move cloth at a uniform speed. The hot pressing temperature is 170°C.

[0043] Technical indicators: See Table 6 for the technical indicators of the filter material's water-repellent, oil-repellent and easy-cleaning effect and the comparison with the traditional process.

[0044] Table 6 PPS+P84·NW·PPS-500-h-o Comparison of...

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Abstract

The method provides a post-finishing method for a bag type dedusting filter material for industrial gas cleaning, so as to solve the problem that the bag is easy to paste because the existing filter material can not adapt to the work conditions containing oil and water in the prior art. In the invention, long chain alkyl benzene SE2203 silicone oil and PTPE (polytetrafluoroethylene) emulsion are used to prepare maceration extract to carry out dipping post-finishing on woven cloth, punched felt and hydroentangled felt, thereby giving full playing of oleophobic and hydrophobic properties and chemical stability and combining with the better smoothness and flexibility of long-chain high silicon. In the invention, the rating of temperature of the selected materials is higher than that of the homometrical factors, thereby overcoming the problem that when the traditional post-finishing process is operated at high temperature, parts of the non-thermostability solid contents are coked to form a preservative film gap; and the material in the invention has extremely small grain size, which enables the fluorinion to have excellent dispersibility. By using the post-finishing process, the leveling property and surface degree of freedom of the fiber are improved, and ash removal of the filter material is easier, the corrosion resistance, water-repelling property, grease-proofing property and anti-aging property are improved, the filtering material is easy to clean, the filtering effect is improved and the service life of the filtering material is prolonged.

Description

technical field [0001] The invention relates to the field of filter material manufacturing, in particular to a method for preparing a water-repellent, oil-proof and easy-to-clean filter material for industrial smoke containing water and oil medium dust removal and filtration. Background technique [0002] Polyphenylene sulfide (PPS), polyester (PET), aramid fiber (PMIA), Polyimide (P84), Kemel (KML), Acrylic (PAC), Delaron (PAH), Glass Fiber Series (GLS, GE, GC, GET, GCT), Basalt (BAS), PTFE Ethylene is also called Teflon (PTFE) and other fibers made of filter materials by weaving, needle punching or spunlace technology. Due to the different properties of fiber materials, its folding resistance, temperature resistance, oxygen resistance, acid and alkali resistance are also different Among them, only polytetrafluoroethylene fiber has water repellency and oil repellency, but its fiber is prone to electrostatic carding and difficult to comb, requires higher-level finishing equ...

Claims

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Application Information

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IPC IPC(8): D06M15/256D06M15/643B01D39/14B01D39/08D06M101/30D06M101/32D06M101/36D06M101/26D06M101/22
Inventor 王功富曹洪刚郝忠尧王磊王萍萍
Owner JIANGSU DINGSHENG FILTER BAG CO LTD
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