Home ProductsDFX™ Series – Dust Filtration ExcellenceDFX-P84™ P84® Polyimide Dust Filter Bags
DFX™ Series – Dust Filtration Excellence

DFX-P84™ P84® Polyimide Dust Filter Bags

DFX-P84™ P84 Dust Filter Bags are engineered for high-temperature dust filtration where fine particulate capture, low emissions, and stable long-term performance are essential. Manufactured from 100% polyimide felt (P84®), the tri-lobed fibre structure provides an enlarged surface area that enhances dust retention and improves collection efficiency.

These P84 dust filter bags maintain a consistent pressure drop across their service life, making them a reliable choice for industries operating under elevated temperatures and demanding process conditions. Typical applications include cement kilns, incineration systems, chemical plants, biomass energy, and other high-load dust environments.

Technical Specifications
  • Material: 100% Polyimide Felt (P84®), basis weight 500–600 g/m²
  • Operating Temperature: Continuous up to 240 °C; peaks up to 260 °C
  • Micron Ratings: Typically 5–30 μm, depending on finish and application
  • Finish Options: PTFE membrane laminated, graphite coating, silicone coating, oil & water repellent
  • Construction: Sewn with high-temperature thread (PTFE or aramid); double or triple stitched seams
  • Seam Style: Standard double needle or reinforced stitching for high-stress systems
  • Air Permeability: 6–10 m³/m²/min (pre-conditioning, finish dependent)
  • Chemical Resistance: Excellent resistance to acidic gases (SOx, NOx, HCl); poor resistance to alkalis
  • Hydrolysis Resistance: Limited — avoid high moisture or dew point operation
  • Cage Compatibility: Designed for use
    with round or oval cages; venturis compatible
  • Compliance: OEM-equivalent designs; food-contact compliant variants available on request (FDA 21 CFR; EU 1935/2004 & 10/2011)
  • Add-Ons: Wear pads, anti-collapse rings, top-load guides, spark-resistant cuffs
Applications
  • Waste Incineration Plants – ensures compliance with stringent emission limits by capturing fine particulates and acidic flue dust
  • Cement Kilns – clinker coolers and kiln exhaust systems where fine dust and corrosive gases are present
  • Coal-Fired Boilers & Utilities – effective against fly ash and acidic gas streams at elevated temperatures
  • Chemical Processing Plants – filtration of corrosive gas streams containing SOx, NOx, and HCl
  • Biomass & RDF Boilers – where acidic combustion by-products require reliable acid-resistant media