What Is a Desiccant Dryer?

Features

Desiccant dryers consist mainly of two cylinders containing desiccant, connected by a valve system.

Operation

When the desiccant in the first cylinder is saturated, the air flow can be switched to the cylinder containing the dried desiccant.

Dessicant Types

Common desiccants are silica gel (an oxide of silica), alumina (aluminum oxide) and calcium sulfate (the anhydrous form of gypsum).

Types of Dryers

While manual desiccant dryers exist, many dryers are regenerative desiccant dryers, as noted in the Plant Services magazine article, "The Economics of Operating Regenerative Desiccant Dryers," by Noel Corral and Andrew Sheaffer.

Most Expensive

Heatless regenerative desiccant dryers run a portion of dried compressed air through the previously utilized cylinder to extract moisture from its desiccant.

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Desiccant is a substance that absorbs moisture and absorbs water. Consumers and manufacturers use desiccant in a variety of applications to extract.

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