PPS (Polyphenylene Sulfide) Needle-Punched Dust Filter Bags

2.2.6 PPS (Polyphenylene Sulfide) Needle-Punched Dust Filter Bags
The PPS (polyphenylene sulfide) needle-punched filter bag is a high-temperature and corrosion-resistant material made from PPS fiber through a needle-punching process.
①Performance Parameters:Temperature resistance（Continuous use: ≤190℃; short-term exposure: 220℃;）；Resistance to moderate acids/alkalis (pH 4–9);Oxidation resistance (oxygen content <10%; must be <8% under high-temperature conditions);Uncoated filtration efficiency ≥99.5% (emission concentration <30 mg/Nm³).
②Applications:Coal-fired boilers;Waste incineration (NOₓ <200 ppm) for flue gas purification containing SOₓ and moderate humidity (humidity <80%);Wet desulfurization requires temperature control > dew point +10℃.
③Prohibitions:Avoid high-oxygen environments (>10%), strong acids/alkalis, or Cl₂ exposure.