Belt conveyor ECOBELT® FA

pneumatichandlingclosed circuit

Fly ash handling is an essential process in any coal-fired power plant due to ever-tightening environmental regulations and the need to maintain general plant efficiency. However, the fly ash properties (fine particle size, frictional and abrasive nature, high temperature) make them hard to handle. Commonly used to transfer fly ash from the collection hoppers to the storage silos, pneumatic conveying systems often encounter problems with insufficient conveying capacities, plugging, erosive wear in elbows, and build-up in the line. In contrast, the Ecobelt® FA system is the advisable solution to secure continuous fly ash transport from the hoppers located along the flue gas path, including the economizer (ECO), the selective catalytic reactor (SCR), air heaters (AH), and electrostatic precipitator (ESP) or baghouse. In case of layout constraints or if final storage silos are far from the boiler area, the Ecobelt® FA can be associated with a pneumatic system that moves fly ash from the temporary silo to the final one, thus combining the advantages of mechanical transport in the critical extraction area with a pneumatic transport from a single point.