P84 filter bags are engineered with polyimide (PI) fibers developed by Evonik, offering exceptional high-temperature filtration performance. These bags feature a unique trilobal fiber cross-section that enhances dust capture efficiency while maintaining low pressure drop, making them ideal for challenging industrial applications with complex flue gas compositions.
P84 Filter Bags Key Advantages:
Superior Temperature Resistance:
- Continuous operation: 240-260°C
- Short-term exposure: Up to 280°C
Enhanced Filtration Mechanism:
- Trilobal fiber structure creates 30% more surface area
- Self-supporting dust cake formation
Chemical Resilience:
- Excellent resistance to SOx and NOx
- Withstands pH range of 3-10 (short-term)
Operational Efficiency:
- 15-20% lower pressure drop than conventional bags
- Typical service life: 24-48 months
Optimal Applications
- Waste Incineration: Municipal and hazardous waste plants
- Non-Ferrous Smelting: Copper, lead and zinc processing
- Biomass Energy: Straw/palm shell combustion systems
- Chemical Processes: Sulfuric acid and caprolactam production
Technical Specifications
Characteristic | Performance Data |
Fiber Type | P84 polyimide |
Basis Weight | 550-850 g/m² |
Filtration Velocity | 0.8-1.2 m/min |
Max Continuous Temp | 260°C |
Hydrolysis Resistance | Good (≤180°C wet) |
Abrasion Resistance | 3x Nomex® |
Product Configurations
- P84® Pure: 100% polyimide construction
- P84® Blend: Hybrid with PTFE fibers for chemical resistance
- P84® Gradient: Multi-layer structure with increasing density
- P84® AS: Anti-static version with carbon fibers
Installation & Operation
Pre-Installation:
Conduct baghouse inspection (recommended air-to-cloth ratio <1.1:1)
Install tension gauges (optimal: 25-30 kg/bag)
Commissioning:
Preheat to >180°C before introducing dust
Initial pressure drop should stabilize <1200 Pa
Maintenance:
Pulse cleaning interval: 60-120 seconds
Monthly inspection of bag tension
Limitations
✖ Avoid:
Continuous operation below 160°C (acid dew point risk)
Fluorine concentrations >50 ppm
Alkaline conditions at >200°C
Quality Certifications
EN ISO 9001:2015
CE Marked for EU compliance
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