Comet Automation Systems Inc. has introduced a dehumidifying dryer called the HCD, for honey-comb dryer.
The company introduced the HCD at MassPlastics 2002, March 27-28, in Fitchburg, Mass.
The HCD uses the “rotor honey-comb” principle, which means a heat-resistant, air-sealed body casing divides the honeycomb rotor into process and regeneration zones.
Comet, based in Dayton, Ohio, claims the design is the most effective way to dry plastic pellets consistently, without spikes in temperature or dew point.
The rotor is slowly turned by a gear motor at the optimum revolution speed for drying. The blower draws moist air into the honeycomb matrix of the rotor, where moisture gets absorbed.
At the same time the dampest area of the rotor is beginning to enter the regeneration zone, the cool, regenerated part of the rotor enters the process zone.
Comet President Tom Raj-kovich said honeycomb dryers have a service life of up to 10 years, compared with an average two-year life of desiccant dryers.
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