• dry fog
  • coal chute
  • codero plow with fog
  • Wind screen, steel beams with screen
  • Wood fog in hopper Shasta Energy
  • wind fence coal
  • Dry Fog™ Dust Suppression

    Ship Loader
  • Dry Fog™ Dust Suppression

    Silo Fill Conveyors at a Coal Fired Power Plant
  • Dry Fog™ Dust Suppression

    Reclaim Feeder for a Coal Mine
  • DustTamer™ Wind Fence

    Protecting a Mine Tailings Stockpile
  • Dry Fog™ Dust Suppression

    Truck Tipper for a Biomass Power Plant
  • DustTamer™ Wind Fence

    Protecting a Stockpile

Dry Fog has been used specifically for a variety of moisture sensitive materials such as Clay, Nitrates, Limestone, Clinker, and even Cement.   We evaluate site-specific conditions to determine Dry fog applicability with some of these materials.  Typically, with moisture sensitive materials, Dry Fog works better on large open areas such as ship holds & dump pockets than it does with enclosed conveyor belts where it is possible for agglomerated material to build up and harden.

There are several issues with using Dry Fog at Stack Out Conveyor Discharge Points. Generally, there are three sources of  dust generation: (1) separation of the fines coming off of the belt, (2) separation of the fines as the material freefalls and (3) the impact of the material onto the storage pile.  In some cases, the discharge chute can be enclosed with Strip Curtains and positioned close to the pile. In other cases, water sprays must be added at the tail of the conveyor to pre-moisten the material before it stacks out. Typically, we can indicate to our customer's the feasibility of using Dry Fog at Stack Out Conveyors given drawings and photographs. DustTamer Wind Fence Systems are another control measure we use for storage piles.

Dry Fog has the lowest jpgBTU Penalty (chart source Martin Engineering) of any dust suppression system by far. Power Plant Operators report that they have not been able to detect any perceivable increase in moisture to the coal.

Dry Fog systems operate between 7 and 15 pounds water pressure. We typically ask for a source that maintains around 50 PSI water pressure.

In addition to our standard two-stage filtration for water and compressed air, the nozzle design itself has many features to prevent plugging:

  1. There are 4 to 8 water orifices per nozzle, each being .028 inches in diameter or larger.
  2. Our fine atomization occurs outside of the nozzle via sound waves as opposed to squeezing water through an orifice to atomize.
  3. The shock wave produced by the nozzle design to shatter the droplets to a micron size, vibrates the nozzle like a sonic cleaner.
  4. Using low water pressure means the low-pressure drop from 15 lbs maximum delivery pressure reduces the chance for nozzle plugging minerals to come out of suspension (like what happens with high pressure nozzles).

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