pps needle felt filter bag for coal fired boiler
pps needle felt filter bag for coal fired boiler

PPS needle felt：

PPS needle felt is the workhorse media of industrial dust collection. A PPS needle felt filter bag offers continuous operation at 170°C with excellent resistance to acids, alkalis and hydrolysis, at a cost well below PTFE and P84 — which is why it is the default choice for coal-fired boiler flue gas and similar duties worldwide.

PPS Needle Felt — Technical Data：

Filter MediaPPS Needle Felt (Polyphenylene Sulfide)
CompositionPPS fiber / PPS scrim
Weight500–550 g/m²
Air Permeability80–100 m³/m²/min
Tensile Strength (N/5×20 cm)Warp 800–1000 / Weft 1000–1200
Elongation (%)Warp <30 / Weft <30
Continuous Operating Temperature≤170°C (peak 190–200°C)
Acid ResistanceExcellent
Alkali ResistanceExcellent
Filtration Velocity1.0–1.2 m/min
Finishing TreatmentSinged, calendered, PTFE impregnated, or water & oil repellent
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