Fog Dust Control
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System Design, Scoping and Detailing
Equipment Specification and Selection
Ductwork System Balancing and System Commissioning
Supply, Installation and Audit Reporting
Natures’ Solution to Pollution
Like nature, dry fog dust control works on the physics of nucleation, agglomeration, and gravity. A volcano (or an industrial plant) sends dust into the atmosphere, condensing water vapor nucleates on the very fine fraction forming clouds of small droplets, the small droplets agglomerate with the larger fraction of airborne dust, and gravity causes the agglomerates to fall as rain.
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Understanding Fog Dust Control Technology
ADS™ fog based dust collection systems are highly efficient, patented, in situ, fine particulate scrubbers that use very little water, no chemicals, and do not increase the overall moisture content of the flowing material by more than a few hundredths of a percent.
ADS™ technology is based on the principals of agglomeration of particles of like size and nucleation of sub-micron particles during condensation of water from a supersaturated atmosphere. These are the same principals that nature uses to cleanse the atmosphere.
Merriam Webster defines fog as … “vapor condensed to fine particles of water suspended in the lower atmosphere that differs from cloud only in being near the ground”.
Clouds are natures’ solution to pollution. Dust and other particles that are delivered into the atmosphere by wind, volcanoes, or by human activities are “collected” by the small water droplets and delivered back to earth as rain. This “collection” is the result of three phenomena: nucleation, agglomeration, and electrostatic attraction.
Nucleation is the process whereby water vapor condenses on a very small particle thus forming the water droplet.
Agglomeration is the process whereby droplets and particles of similar size collide and form a larger, heavier droplet.
Electrostatic attraction enhances agglomeration when the charges of two nearby particles or droplets are opposite. In nature, water droplets in clouds are often neutral but in storm conditions, the upward flow of warm, humid air rips electrons off of the cloud droplets causing a static differential between areas within the clouds causing lightening strikes when the differential reaches a critical level..
The Raring Corporations’ ADS™ dust control system works in much the same way as nature. A cloud is created using sonic air assist nozzles. The dust and fog are contained in a suitably designed environment to permit the collection processes to occur sufficiently. Electrostatic charge is induced naturally through the atomization process. And nucleation occurs due the the dynamics of air movement within the containment.
