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The Shand & Jurs Model 94320 Dehydrator absorbs moisture
from the air that is drawn into a storage tank during the unloading of product
or by “thermal breathing” conditions. Desiccant of high absorptive capacity is
used as the drying agent. The hard ball shaped form of the desiccant minimizes
the pressure drop, permitting more efficiency. This is a function of material
surface area and retention time. The nature of the desiccant does not change
the flow of gas up to the point of maximum saturation since the moisture is
absorbed within the pores of the material. The desiccant is contained in a
bank that can be easily removed for cleaning or maintenance.
The humidity
indicator is a good barometer to monitor when the desiccant bed is saturated.
To reactivate a saturated desiccant bed, heat the bed to 400°F until all
moisture is vaporized. The desiccant can be subjected to thousands of
absorption-reactivation cycles without any appreciable loss of efficiency.
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