Description

P84 filter felts are high temperature engineering polymers.

High temperature insulation polyimide filter felts offers the

highest heat resistance and greatest strength.  

Polyimide filter felt is a high temperature fiber which under dry conditions can be operated up to 230°C.

A common Polyimide fiber is P84®.  This fiber benefits from a tri-lobal cross section which greatly enhances its filtration efficiency to the point that it is sometimes used with much less expensive fibers to boost dust collection. In this application it usually forms a cap on the surface of the felt to exploit this property effectively.

It is a fiber with good chemical and thermal resistance. Some care is needed with oxidizing agents such as NO2 and the fiber can be sensitive to hydrolytic attack in hot wet conditions.

ACIDS – GOOD

ALKALIS – GOOD

OXIDIZING AGENTS – FAIR

HYDROLYSIS – FAIR

SOLVENTS – GOOD

Improved hydrolysis resistance compared with m-aramid fibers – irregular cross section enhances filtration efficiency – used in power generation, incinerators and the cement industry.

MAXIMUM CONTINUOUS IN DRY CONDITIONS: 245°C / 473°F

MAXIMUM SURGE IN DRY CONDITIONS: 255°C / 491°F

Features:

1. High-efficiency filtration : reach to 99.6%
2. Good Temperature-Resistance. Max. Temp. 280°C /536°F
3. Long service life: >6000 hours
4. Excellent micro-powder collection efficiency and smaller operating pressure
5. Low back washing pressure, maximum flexibility, excellent dust cake release
6. Variety of finish treatments: PTFE Coating, PTFE Membrane,  PTFE Impregnation
7. Can be used in a variety of complex situation and harsh environmental conditions
8. Can be customized.

Specification

Application 

1 Asphalt plant

2 cement plant

3 waste incinerator

4 coal-fired power plant