Superheated-steam drying with mechanical vapor compression

Drying with superheated steam has numerous advantages : quality of the dried products, fast rate of drying, minimization of gaseous effluents... NIRO A/S developed a superheated steam dryer which has been used for beet pulp for a decade. That sort of dryer can be used for other products (sludge, corn and wheat residus...). In such case it can be coupled to a compressor. To underline the industrial interest and the performance of that technique, a mobile platform has been set up within the scope of a collaboration between NIRO A/S and EDF. Tests have been carried out with various products. The energy balance with and without mechanical vapour compression has been etablished.