Single-Stage Dryers

The most utilized dryer in the food industry is the single-stage, multi-zone apron conveyor dryer. The single stage dryer is ideal for products that require gentle handling and temperature profiling, and is commonly used for bread products, instant rice, snacks and a host of other products.

Single-Stage Dryers consist of a single conveyor made of apron components which carry product through the multiple zones of the dryers. Each zone varies in operating temperature and airflow. By using the zone arrangements, temperature and airflow efficiencies can be optimized during periods of maximum evaporation. Bed depth is held uniform through-out the process, resulting in an accurate and predictable drying rate with the highest possible drying efficiency. This arrangement also guarantees first-in first-out processing.

The conveyor can be manufactured in a number of styles, including National's patented Slip-Hinge apron conveyor which is pinless to minimize product entrapment, facilitate cleaning and allow for easy replacement. Conveyors are also available in mesh and other styles, depending on the products' requirements.

National Drying Machinery Company, 2190 Hornig Road, Philadelphia, PA 19116. Tel: 215-464-6070; Fax: 215-464-4096.