QHD Heatless Dessicant Dryer

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With decades of experience in the design and operation of energy efficient compressed air systems, Quincy Compressor makes some of the world’s finest air compressors and industrial air pumps on the market. Quincy's Rotary Screw and Piston air compressors, Vacuum pumps and air Treatment products are made to the highest standards and can be found in some of the most demanding and critical installations.



QHD Heatless Desiccant Dryer

Quincy QHD heatless desiccant dryers use a small portion of
dried, compressed air to purge and regenerate the off-line tower. The QHD has
been engineered to ensure optimal performance and efficiency in a range of
different applications while keeping downtime to a minimum.


The QHD series of desiccant dryer systems includes 13 models
that deliver between 230 and 3,400 CFM of clean, dry air at a pressure of 100 psig.
All feature a heavy-duty steel base and dual tower configuration that
regenerates automatically.


Under normal operation, air is forced upwards through the
drying tower, where moisture and contaminants are removed and a small amount ƒ??
15% ƒ?? of air is diverted downwards through the regeneration tower where it
depressurizes the desiccant bed to ambient conditions. Overall velocities are
kept below 50 feet/minute so that air remains in contact with the desiccant for
a minimum of 4.5 seconds. The entire process follows a 6-10 minute NEMA cycle,
which consists of three to five minutes of drying time, 2 minutes and 25
seconds to 4 minutes and 20 seconds of regeneration and 40 seconds of


Like all our desiccant-type air dryers, the QHD heatless air
dryer system includes high-quality components and is backed by a two-year
comprehensive warranty. For details, download the product brochure or contact a
Quincy rep directly.


Initial cost: Low

Operating cost: Moderate to high

Maintenance cost: Low

-40° to -100°F dew point

230 ƒ?? 3,400 cfm

15% purge

Microprocessor control

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