Chemical Dust Suppression systems use chemicals in an attempt to bind dust particles together or to break up the surface tension of the water, increasing its ability to penetrate the conveyed material. In 2009, the US Environmental Protection Agency received testimony from a variety of Coal Preparation Plants that moved the EPA to Exclude Chemical Dust Suppression Systems from its designation of Best Demonstrated Technology (BDT) for sub-bituminous coal. At the same time the EPA designated Fogging Systems as BDT for sub-bituminous coal.
The Dry Fog Advantages
1. No Chemicals to buy year after year as none are required therefore reducing your operating cost. Some customers will use their operating budget for buying chemicals to purchase a Dry Fog System and eliminate yearly chemical cost!
2. No Chemicals to transport or store and no MSDS requirements to comply with or records to maintain.
3. No Damage to conveyor belts by applying proprietary chemicals. Conveyor Belt Damage Article
3. No Product Wetting which for fuel sources lowers the BTU value (see BTU penalty chart by Martin Engineering). Wetting material and can create material handling issues.
4. No Pumps, Totes or MSDS. Dry Fog operates at low water pressure using plain water, so it typically Does Not Require Pumps eliminating moving parts that need maintenance.