Fabric filtration comes of age
Fabric filtration is increasingly seen as the best-available technology to help producers meet their goals, and with good reason. FLSmidth has introduced two important innovations in this area. Firstly, extra-long filter bags prevent the formation of a filter cake on the outside of the bags. Secondly, a side inlet for gas and dust extends the bag’s life time and reduces the need for maintenance, process control and troubleshooting. By Henrik Vittrup Pedersen and Pietro Aresta, FLSmidth Airtech, Denmark.
FLSmidth has implemented more than 500 filter systems with filter bags over 6m in length in
all cement applications, including raw, cement and coal mills, bypass, cooler and kiln
In recent years cement producers have become increasingly aware of the significant performance differences between the newest fabric filtration technology and electrostatic precipitators (ESPs). ESPs were the preferred choice of the cement industry for many years, but as environmental regulations have become tighter, their capabilities were increasingly challenged.
