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Flue gas filtering composite filter material for glass melting furnace

A composite filter material and glass melting furnace technology, used in filtration and separation, membrane filter, dispersed particle filtration, etc., can solve the problems of easy hydrolysis, not fully applicable to glass furnace, not resistant to hydrolysis, etc., and achieve the removal of viscous fine powder. , low cost and long service life

Inactive Publication Date: 2020-03-24
中材科技膜材料(山东)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The P84 fiber used in the P84 filter bag mentioned in this patent is imported from abroad. It belongs to polycondensation fiber and is not resistant to hydrolysis. It is prone to hydrolysis under high temperature, high humidity and acid-base environment, so it cannot be fully applied to the glass kiln industry.

Method used

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  • Flue gas filtering composite filter material for glass melting furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Ceramic fiber wet slag removal pretreatment: place the ceramic fiber in an aqueous solution of softener R with a volume concentration of 20%, stir for 15 minutes at a speed of 30m / min, treat with a slag remover, and dry at 180°C. Ceramic fiber diameter 4μm.

[0020] (2) Pretreatment of glass fiber base cloth: the glass fiber base cloth has been pretreated, and the weight of the base cloth is 320g / m 2 ; The glass fiber base cloth is impregnated with a treatment agent, the treatment agent includes 15% of PTFE emulsion, 5% of acrylate emulsion, and the rest is water. The processing temperature center high temperature zone is 260°C, the inlet low temperature zone is 120°C, and the baking time is 10 minutes.

[0021] (3) Felting of filter material and glass fiber base cloth: the pretreated ceramic fiber, glass fiber, chemical fiber and pretreated glass fiber base cloth are opened, carded, laid, pre-needled, and main needled. A needle-punched felt was prepared, wherein ...

Embodiment 2

[0026] (1) Ceramic fiber wet slag removal pretreatment: place the ceramic fiber in an aqueous solution of softener R with a volume concentration of 20%, stir for 10 minutes at a speed of 20m / min, treat with a slag remover, and dry at 150°C. Ceramic fiber diameter 3μm.

[0027] (2) Pretreatment of glass fiber base cloth: the glass fiber base cloth has been pretreated, and the weight of the base cloth is 320g / m 2 ; The glass fiber base cloth is impregnated with a treatment agent, the treatment agent includes 10% of PTFE emulsion, 8% of acrylate emulsion, and the rest is water. The processing temperature center high temperature zone is 260°C, and the inlet low temperature zone is 120°C.

[0028] (3) Felting of filter material and glass fiber base cloth: the pretreated ceramic fiber, glass fiber, chemical fiber and pretreated glass fiber base cloth are opened, carded, laid, pre-needled, and main needled. The needle felt was prepared, wherein 35 parts of ceramic fiber, 15 parts o...

Embodiment 3

[0033](1) Ceramic fiber wet slag removal pretreatment: place the ceramic fiber in an aqueous solution of softener R with a volume concentration of 20%, stir for 15 minutes at a speed of 30m / min, treat with a slag remover, and dry at 180°C. Ceramic fiber diameter 4μm.

[0034] (2) Pretreatment of glass fiber base cloth: the glass fiber base cloth has been pretreated, and the weight of the base cloth is 320g / m 2 ; The glass fiber base cloth is impregnated with a treatment agent, the treatment agent includes 15 parts of PTFE emulsion, 5 parts of acrylate emulsion, and the rest is water. The processing temperature center high temperature zone is 260°C, and the inlet low temperature zone is 120°C,

[0035] (3) Felting of filter material and glass fiber base cloth: the pretreated ceramic fiber, glass fiber, chemical fiber and pretreated glass fiber base cloth are opened, carded, laid, pre-needled, and main needled. A needle felt is prepared, wherein 80 parts of ceramic fiber and 2...

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Abstract

The invention relates to a flue gas purification composite filter material for a glass melting furnace, the composite filter material comprises glass fiber base cloth, a filter material and a PTFE film, the filter material is composed of ceramic fibers, glass fibers and chemical fibers, the glass fiber base cloth and the fibers are formed by needling, and the surface of the glass fiber base clothis coated with the PTFE film. A wet process and softener treatment are applied; the high-strength corrosion-resistant ceramic fibers are combined with chemical fibers and glass fibers with different melting points; by multiple treatment processes, the problem that ceramic fibers cannot be carded into felts and cannot be coated with films is solved; the ceramic fibers and the glass fibers play a role in skeleton supporting and filtering; low-melting-point chemical fibers are used, when the temperature is higher than the melting point temperature of the fibers, the chemical fibers are carbonized, filtering holes are enlarged, viscous fine powder of the glass melting furnace can be effectively removed, the filtering precision is high, corrosion resistance is achieved, the mechanical propertyis high, the cost is low, the service life is long, the current environment-friendly ultra-low emission requirement can be met, and an existing pure PTFE filtering material can be replaced.

Description

technical field [0001] The invention relates to the field of high-temperature flue gas purification filter materials, in particular to a composite filter material for flue gas purification in glass melting kilns. Background technique [0002] On August 2, 2018, the Ministry of Ecology and Environment issued the "Emission Standards for Pollutants in the Daily Glass Industry (Draft for Comment)". The draft for comments makes specific regulations on the discharge of air pollutants and water pollutants in the daily glass industry. Starting from January 1, 2019, the pollutant discharge standard for newly-built glass melting furnaces has a limit value of air pollutant discharge: particulate matter 50mg / m 3 . Sulfur dioxide emission concentration 400mg / m 3 , nitrogen oxides 700mg / m 3 , hydrogen chloride 30mg / m 3 , Fluoride 5mg / m 3 . Glass melting furnaces generally use petroleum coke powder / heavy oil / coal gas / natural gas as fuel, and the smoke contains a large amount of NOx, ...

Claims

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Application Information

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IPC IPC(8): B01D39/08B01D46/00B01D46/54
CPCB01D39/083B01D39/086B01D46/0001B01D46/543B01D2258/0283B01D2239/10B01D2258/0241
Inventor 范凌云项朝卫白亚飞徐露张剑绪超魏涛徐正琦曹金亮周诚
Owner 中材科技膜材料(山东)有限公司