High temperature-resistant anti-oxidation filter material and manufacturing method thereof

A manufacturing method and anti-oxidation technology, applied in chemical instruments and methods, separation methods, filtration and separation, etc., can solve the problems of filter material failure and loss, and achieve the effects of slowing down premature failure, improving oxidation resistance, and delaying aging

Active Publication Date: 2011-08-17
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the filter material is used under high temperature and oxygen-containing conditions, such as the flue gas of a large coal-fired boiler, especially in the place of electric bag composite dust removal, some filter materials will fail early, causing great losses

Method used

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  • High temperature-resistant anti-oxidation filter material and manufacturing method thereof
  • High temperature-resistant anti-oxidation filter material and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0011] Using polyphenylene sulfide base cloth and polyphenylene sulfide fiber as raw materials, a 550 g / m2 filter felt is made by needle punching method, and 2,5-di-tert-butylhydroquinone (DTBHO) antioxidant Prepare a solution at a concentration of 10%, and let the needle felt pass through the solution by dipping. It is necessary to ensure that the filter felt is in the solution for at least 15 seconds, so that the coating thickness reaches 1 micron, and then it is passed through a high-temperature steam heating box and a hot pressing roller for baking drying and heat setting line treatment, the temperature is 210°C, and the time is 5 minutes total, after which you get the finished product.

example 2

[0013] With polytetrafluoroethylene base cloth as the base and polyphenylene sulfide fiber as the raw material, a 570 g / m2 filter felt is made by needle punching, and 2,5-di-tert-butylhydroquinone (DTBHO ) Antioxidants were added to 20% polytetrafluoroethylene emulsion at a concentration of 8%, and 3% rosin soap foaming agent was added, and the blower was used to blow out the emulsion at a flow rate of 5L / min, and the formed foam was coated on the needle felt On the surface, make the thickness of the coating reach 1.5 microns, and then make it pass through a high-temperature steam heating box and a hot pressing roller for baking drying and heat setting treatment at a temperature of 210°C for 5 minutes, and then the finished product is obtained.

example 3

[0015] With polytetrafluoroethylene base cloth as the base and aramid fiber as the raw material, a 500 g / m2 filter felt is made by needle punching method, rosemary antioxidant is added to the water at a concentration of 5%, and the needle punched felt is The dipping method passes the liquid. The filter felt is soaked in the liquid for at least 15 seconds, and the coating thickness reaches 1 micron, and then it is baked, dried and heat-set through a high-temperature steam heating box and hot pressing roller at a temperature of 235°C for 5 minutes, and then to get the finished product.

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Abstract

The invention relates to a high temperature-resistant anti-oxidation filter material and a manufacturing method thereof, belonging to the technical field of high-temperature filter materials. 1%-10% of 2,5-di-tert-butylhydroquinone or rosemary antioxidant liquid is utilized for performing impregnation or coating treatment on a 300-1000g/square meter filter felt produced by the needle puncture method or the spunlacing method for coating an anti-oxidation coating layer with 0.5-50 microns on the surface of the filter felt, and then high-temperature baking treatment and thermosetting with steam or hot oil are performed for 1-60 minutes at the temperature of 100-235 DEG C for forming the high temperature-resistant anti-oxidation filter material for filtering high-temperature smoke dust. In order to solve the defects of the filter material for a bag dust collector in the anti-oxidation aspect, the invention provides the high temperature-resistant anti-oxidation filter material and the manufacturing method thereof, by using the high-temperature antioxidant to perform the impregnation or the coating on the filter material and further performing the baking and the thermosetting treatment,the filter material has the anti-oxidation property, and the too early aging failure of the filter material under a high-temperature oxidation environment can be avoided.

Description

technical field [0001] The invention belongs to the technical field of high-temperature filter materials, and in particular relates to a high-temperature-resistant and anti-oxidation filter material and a manufacturing method thereof. Background technique [0002] Theory and practice have proved that the bag filter is one of the most effective means of collecting dust, especially ultrafine particles, and is being widely used in various dust control places such as large coal-fired boilers, cement kiln heads and tails, steel And metal smelting, waste incineration and other industrial sites that generate smoke and dust. The filter material is the core of the bag filter, and its performance determines the function of the bag filter. [0003] Due to the influence of factors such as the high temperature of the flue gas and the chemical composition, the performance of the filter material will gradually decrease during use until the service life is exhausted. The life of the filte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B32B5/26
Inventor 柳静献孙熙毛宁常德强
Owner NORTHEASTERN UNIV
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