GE introduces felt filtration medium for coal-fired power plants
The patent-pending filtration technology provides an alternative to traditional polyphenylene sulfide felt typically used in these applications
The patent-pending filtration technology provides an alternative to traditional 100 percent PPS (polyphenylene sulfide) felt typically used in these applications. According to the International Energy Agency, even though coal demand growth is slowing in the U.S. due increased use of shale gas, coal's share of the global energy mix is still rising, and by 2017 coal will come close to surpassing oil as the world's top energy source.
The new bi-component PPS material forms a strong bond when laminated with GE's Preveil ePTFE membrane.
To produce the media, a high-strength, high-temperature polymer first is surrounded by a sheath of PPS to create bi-component fibers. Those fibers then are turned into felt, which is the preferred substrate for fabric filters used in coal power generation baghouses.