The NARA Paddle Dryer (NPD) was originally designed as an indirect dryer used for both drying and heating or cooling organic and inorganic pellets, granulates or powdery materials.
Over time, its application has diversified from basic process applications to more sophisticated processes like crystallization, coating, sterilization and calcination. Because of its wide range of applications, the Paddle Dryer (NPD) is used in many industries such as food industry, pharmaceutical, specialty chemical and the battery.
The product temperature is changed by contact of the material with cone-shaped rotating paddles and the unit wall. Here, the required heat transfer is achieved by heating or cooling the shafts and dryer body. In addition to the very good indirect heat transfer, the Paddle Dryer (NPD) is characterised by its compact design and thus low space requirement. The intermeshing movements of the paddles ensure homogeneous, constant mixing of the material in continuous or batch operation.