Wet feed is exposed to the hot furnace gases in a controlled "lift and fall" manner. The particles are exposed to the hot gas as they fall, but not while they are resting in the flighting. This exposure to high heat, followed by a brief rest, prevents the gases from heating the solids too long, greatly reducing the amount of VOCs generated.
Better product color
A QuadPass rotary drum dryer gives you better color in your finished product because the solids are less likely to be charred or over-dried. This is due to the unique way the QuadPass design presents the wet feed to the drum, as well as the controlled manner in which the feed is exposed to the hot gas.
Solids dried uniformly
The Hot Gas Turbulator swirls the gas as it enters the feed zone. This turbulent air helps the feed solids to spread out, allowing the hot gas to contact nearly all particle surfaces. Good heat distribution prevents clumping and generates a more uniformly dried product.
Reduces fire danger
A unique feed arrangement all but eliminates operating dryer drum fires. Because the wet feed enters the drum dryer off-center, away from the "blowtorch" of hot gases, it is much less likely to catch fire.
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