P84 polyimide needlefelts are excellent high temperature filter media in terms of performance, generally surpassing the other standard media with the exception of PTFE.
Features
- Excellent steady under high temperature and resistance to acid
- P84 can operate continuously, under practical and low acid working conditions, at temperatures up to 500°F(260 °C).
- High filtration efficiency, high tensile strength.
- The complex cross sectional shapes create 30-90% more collection surface area when compared to round or oval shaped fibers.
- Low back washing pressure, maximun flexibility
- The unique tri-lobal fiber structure of P84 provides customers with high efficiency filtration, low pressure drop, and reduced cleaning energy.
- Excellent dust cake release
- P84 has irregular, tri-lobal fibers that provide better collection efficiencies and enhanced dust cake release properties
Composition |
P84/P84 scrim |
Weight (g/m2) |
450 |
500 |
550 |
Thickness (mm) |
2.1 |
2.3 |
2.5 |
Air permeability (L/m2/s) |
19 |
15 |
12 |
Tensile strength (N/5×20cm) |
Warp |
650 |
700 |
800 |
Weft |
1150 |
1200 |
1300 |
Tensile elongation (%) |
Warp |
<35 |
<35 |
<35 |
Weft |
<55 |
<55 |
<55 |
Broken strength (Mpa/min) |
2.55 |
2.5 |
2.4 |
Working temperature (℃) |
≤ 260 |
Short time working temperature (℃) |
280 |
Anti-acid |
Excellent |
Anti-alkali |
Fair |
Anti-abrasion |
Excellent |
The stability of water solution |
Medial |
Finishing treatment |
High temperature hot pressingSingein |
Applications
- Incinerator plants
- Cement Kiln gas
- Low acid coal fired boilers
- Asphalt/hot mix plants flue gas
- Minerals processing
- Soil remediation facilities Specification
Related Product
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Acrylic Filter Bag
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Envelop Filter Bag
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caps
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P84 Filter Bag