How to Choose Filter Materials for Different Working Conditions?

Selecting filter materials based on working conditions is critical to dust collector efficiency and bag service life. The core principle is to match material performance with environmental factors, with four common scenarios:

1. High-temperature working conditions (flue gas ≥130℃, such as boilers, incinerators): 

Choose high-temperature resistant materials like PPS (160-180℃), PTFE (200-260℃), or glass fiber. These materials maintain structural stability under high temperatures, avoiding brittleness or burning.

2. Corrosive working conditions (acid-base gas, such as chemical plants, electroplating workshops): 

Prioritize corrosion-resistant materials like PTFE and fluorine-containing composites. They resist erosion from strong acids, alkalis, and chemical vapors, preventing material degradation and air leakage.

3. High-abrasion working conditions (mining, stone factories, cement plants): 

Select wear-resistant materials such as FMS, glass fiber, or polyester with wear-resistant coatings. These materials have high tensile strength and wear resistance, enduring impact from abrasive dust.

4. General working conditions (normal temperature ≤130℃, low dust concentration, non-corrosive, such as food processing, woodworking): Use ordinary materials like polyester or polypropylene. They are cost-effective, have good air permeability, and meet basic dust removal needs.

Additionally, consider dust particle size and removal efficiency: fine dust (≤10μm) requires fine-pore filter materials (e.g., nanofiber composites) to ensure capture, while coarse dust can use materials with larger pores to reduce resistance.