Fly ash handling; circulating fluid bed boiler. Two on-line pulse jet collectors with 54 bags each evacuate hoppers from the main baghouse into a storage silo.
High pressure drop and short bag life. Conventional NOMEX® felt filter bags quickly blind causing the pressure drop to increase above 15" w.g. Average bag life was two weeks with a maximum of three weeks. As a result, labor and bag costs were very high.
A full set of GORE® membrane/NOMEX® felt filter bags were installed.
Pressure drop is reduced to 2-3" w.g. Bag life increased to 11 months. Major savings in bag and labor costs were realized. It was observed that with GORE® membrane filter bags, the system moved more fly ash than before. Also, the bags recovered several times from filling up the baghouse with fly ash. Subsequently, dumping frequency into the storage silo had to be doubled. Now, both collectors use GORE® membrane filter bags.
Not for use in food, drug, cosmetic or medical device manufacturing, processing, or packaging operations