Conveyor Transfer Points are a great area of concern for Power Plants. The risk of fires, explosions and trouble meeting Fire and Safety Regulations increase significantly with PRB Coal. However, there is a Dry Fog Solution.
DSI pioneered the use of Dry Fog for PRB Coal Fired Plants in the 1990s and still leads this effort today. Dry Fog eliminates the risk of dust explosion associated with dust collection systems. The explosive waste stream is eliminated as we do not collect the dust. Instead, we simply "knock down" the airborne dust at the point of creation. Typically, a secondary waste stream creates a high concentration of explosive dust that re-enters the conveyor belt only to create more issues downstream. Using DSI's system of Dry Fog for PRB Coal Fired Plants prevents the creation of this secondary waste stream.
Dry Fog works by injecting sub-micron water droplets into the air at the point of dust creation. Fog droplets attach to like size airborne dust particles. The slightly wetted particles agglomerate to other particles, adding enough mass to settle the dust back into the conveyed product within the covered transfer point. This is used at crushers, screens, coal yard & plant conveyors, including reclaim, gallery, tripper conveyors and silos.