Spray dryers typically employ induced-draft fans to extract the
moisture-laden air from the system. In some instances, special fans are
installed to achieve dryer-specific operations such as air sweeps.
Due to the fine product that is produced on spray dryers, they
inherently require dedicated dust-collection systems such as cyclones,
bag houses, scrubbers and electrostatic precipitators.
As a review, spray dryers or towers, as they are sometimes called, atomize or spray the feed material into the drying chamber in fine droplets. They are continuous processing machines that come in a range of configurations.