SCALE-UP OF STEAM-DRYING

The possibility of drying in superheated steam or superheated solvent vapour has been realised for a long time bur practised very little. Re cent advances-have led to predictions of rapid growth of steam-drying applications. Most of these exhibit remarkable energy-savings over con ventional plant and reductions in cost which make attractive the insta llation of steam-drying plant even without ''Greenhouse'' consideratio ns. Given this growth potential, it is essential to think about those aspects of scale-up particular to steam-drying. This paper looks at th e variety of potential steam-drying plant and related scale-up problem s, while recognising that each particular type of plant requires more individual consideration than can be addressed in this brief papar.