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The latest four-pass dryer configuration incorporates a heat turbulator, a non-moving structural steel device that creates eddies and turbulence in the hot gases entering the drum. The turbulator generates numerous air velocities, which separate particles in the drying environment.
This keeps all material away from the hottest furnace air to prevent overheating. The material enters the drum "at rest" on the flights and drum shell, where the largest and wettest particles cool the drum. Dust and fines are air-conveyed away quickly, allowing a total usage of Zone One's first pass for maximum efficiency. The design eliminates gas updraft that could cause plugging and fires and lets the operator observe material flows.
Faster Drum rotation
There's lower contact stress in trunnion wheels and drum rolling tracks, less live-load on the drum and drive, and a greater exposure of more material surface in less time.
Increased Air Velocities
These drums produce up to twice the air velocity of like-size conventional drums. This lowers inlet and outlet temperatures, conveys more material from the drum outlet to the collectors, and shortens drying time, which can allow the use of shorter drums.
Lifter Flighting Design Speeds Drying
Scalloped and/or sawtooth cut flighting causes materials to fall at 90-degree angles to the gas flow, producing additional eddies and pressure at the vapor film. This means more of the material surface area-up to three times more than with straight-line flighting-is exposed to convection drying with every turn of the drum.
Drum Replacement
If your drums are broken, burned up, worn out, or do not meet production quality or quantity, we can replace any size, make or model with a new state-of-the-art drum.
More information about our Quadpass™, Four-Zone dryers, contact us or E-mail pinc@terraworld.net and we will get in touch with you as soon as possible
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