The process
Crushers, screens, conveyor transfer points and bunkers raise coal dust that is extracted into bag filters. Spark resistant fans on the clean side, with dust suppression and extraction designed together.
The gas
Extraction air from coal crushing and handling. Combustible dust, so spark resistant construction throughout, with the fan after the collector.
Fans in this process
| Duty | What it does here | Type usually selected |
|---|---|---|
| Dust Collector Fan | The fan behind a bag filter, cyclone or multiclone on a dust extraction system. | Backward inclined and radial tipped |
| Bag Filter Fan | Pulls the process gas through the filter bags and discharges the cleaned gas to the stack. | Backward curved and radial tipped |
| Seal Air Blower | Supplies clean air at a pressure above the mill or fan casing pressure to the shaft seals and bearing housings, so pulverised coal cannot enter.. | Backward curved and radial |
| Ventilation Fan | Moves air through a plant or building for fresh air supply, heat removal and fume dilution where the system is ducted. | Backward inclined and forward curved |
Air pollution control
Industries
Related processes
Bagasse Fired BoilersRice Husk Fired BoilersAFBC BoilersCFBC BoilersPulverised Coal Fired BoilersWaste Heat Recovery BoilersBiomass Fired BoilersSponge Iron Rotary KilnsFerro Alloy Submerged Arc FurnacesFlare and Pressure Relief SystemsMineral Crushing and ScreeningAsh Handling SystemsCaptive Power PlantsGenerator and Engine RoomsPneumatic Conveying SystemsSilo Aeration and Fluidisation