Several factors must be taken into account before selecting the best explosive dust collection method. Both wet and dry systems can be utilized depending on the physical properties of the dust such as particle size, moisture content, ignition potential, and dust concentrations. The Kst and Pmax values of a particular dust helps to classify the severity of an explosion should it occur. The higher the Kst value, the more severe the explosion.
Wet Collection Systems
In general, wet collection systems suppress and neutralize the dust’s explosive properties so that it no longer poses an explosion threat. Additionally, wet systems can better handle highly abrasive dusts that may tear, shred, and damage dry filter media. However, by design these wet systems consume fresh water and generate wastewater that must be treated, impacting the operating cost of the units.