Non Woven Needle Felt Filter Medias

P84 needle felt

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P84 (polyimide) needle felt
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.

 

Applications

• 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

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

2.50

2.40

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 pressing,Singeing