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Needle Felt for Air Filtration
P84 needle felt
P84 needle felt

Detail:

P84 (polyimide) needle felt 
P84 polyimide needle felt 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

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/5X20cm)

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

Hits:  Update:2014-4-12 13:22:13  【Print】  【Close

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