PTFE Filter Bags

1. Introduction of PTFE filter bags

PTFE is polytetrafluoroethylene, also known as Teflon, is one of the more high-end varieties of bag filter materials. The PTFE synthetic fiber filter bag is a filter bag made of a unique material. It can withstand acid and alkali corrosion in the entire PH value range at a continuous operating temperature of 240℃ and an instantaneous temperature of 260℃. The PTFE synthetic fiber filter bag has excellent self-lubricity, does not absorb moisture, and can withstand ultraviolet radiation. However, the wear resistance of the PTFE fiber filter material is general, so there are stricter requirements (finishness) for the filter bag frame. PTFE fiber filter bags are more suitable for harsh conditions that require corrosion resistance and high requirements for filter material service life.

Polytetrafluoroethylene synthetic fiber filter bags can be used for flue gas treatment in coal-fired boilers, garbage incineration, carbon black production, titanium dioxide (TiO2) production and other processes. In the primary smelting, refining and chemical production of some metals, there are also applications for PTFE filter bags.

2. The characteristics of PTFE filter bags

The surface of the film is smooth and resistant to chemical substances. It is laminated to the surface of ordinary filter materials to act as a disposable dust layer, trapping all the dust on the surface of the film to achieve surface filtration. It has the unparalleled superiority of traditional filter materials.

It has the characteristics of high peel strength, large air permeability, low resistance, and uniform pore size distribution.

Installed in the dust removal equipment, it will quickly and effectively intercept the ultrafine dust calculated in microns. The dust removal efficiency of the PTFE filter bag is more than 99.99%. It is an effective and economical new filter material for industrial dust filtration and material recovery.

The obvious difference from other pure high-performance fiber (PPS, glass fiber, P84, aramid) filter media is: as time goes by, PTFE will not age, accompanied by the joint action of high temperature gas, corrosive gas, and liquid. The breaking strength of the PTFE base fabric will not be attenuated, and the service life will be greatly improved.

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