Polyimide /PI High-Temperature-Resistant Needle-Punched Filter Felt

Polyimide /PI -temperature needle-punched filter felt is a new high-temperature-resistant product manufactured by our company using polyimide (INSPECF IBERS) fibers produced by LENZING of Austria, under the guidance of specialized foreign companies. We are one of the few enterprises in China that mass-produces this filter material.

This filter material has the following three notable features:

1. Outstanding temperature resistance: It operates at temperatures up to 260°C and maintains a safety margin even during shutdowns or unexpected incidents.
2. Excellent chemical resistance: Over more than a decade of use in waste incineration operations, it has proven to provide reliable filtration against acidic exhaust gases and alkaline dust.
3. Low backwash pressure and high filter cake detachment efficiency: Due to the high fineness and irregular cross-section of the fibers, the surface area is maximized, creating a large number of microscopic pores; surface filtration is more effective than depth filtration. Dust is retained only on the surface of the filter felt and cannot penetrate into its interior; consequently, backwash pressure is low, filter cake detachment efficiency is significantly improved, and the material offers excellent collection efficiency for fine particles while maintaining a low operating pressure drop.

To date, this filter media has accumulated extensive application experience in settings such as asphalt plants, cement plants, waste incinerators, fluidized bed boilers, and coal-fired boilers.