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.
Selection for this process
| Role | Pre-collector for the coarse fraction ahead of a bag filter or scrubber |
| Construction | Mild steel with wear plates at the inlet |
| Discharge | Hopper with rotary air lock valve |
Types, construction and performance of the multiclone.
Industries
Fans in coal handling plants
Multiclone in other processes
Information needed to select or quote
- Gas volume and temperature. Actual flow at the inlet, normal and upset temperature, moisture.
- Dust or pollutant. Inlet loading, particle size distribution, whether it is abrasive, sticky, hygroscopic or combustible; for gases, the species and concentration.
- Required outlet. The emission limit or clean gas concentration the unit must meet.
- Site. Available space and height, material of construction preferences, and how the collected material is to be discharged.