P84 (polyimide) needle felt
Description:
P84 polyimide needle felts 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¡ãF(260 ¡ãC).
• 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.
Application:
• Incinerator plants
• Cement Kiln gas
• Low acid coal fired boilers
• Asphalt/hot mix plants flue gas
• Minerals processing
• Soil remediation facilities
Specification:
|
Composition |
P84/P84 scrim |
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Weight (g/m2) |
450 |
500 |
550 |
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Thickness (mm) |
2.1 |
2.3 |
2.5 |
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Air permeability (L/m2/s) |
19 |
15 |
12 |
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Tensile strength (N/5¡Á20cm) |
Warp |
650 |
700 |
800 |
|
Weft |
1150 |
1200 |
1300 |
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|
Tensile elongation (%) |
Warp |
<35 |
<35 |
<35 |
|
Weft |
<55 |
<55 |
<55 |
|
|
Broken strength (Mpa/min) |
2.55 |
2.50 |
2.40 |
|
|
Working temperature (¡æ) |
¡Ü 260 |
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Short time working temperature (¡æ) |
280 |
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Anti-acid |
Excellent |
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Anti-alkali |
Fair |
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Anti-abrasion |
Excellent |
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The stability of water solution |
Medial |
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Finishing treatment |
High temperature hot pressing£¬Singeing |
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