Progress in dryer selection techniques

This paper provides an industrially-orientated review of dryer selection methods. The subject has been neglected in the past because it is difficult and unclear; most rules are qualitative rather than quantitative. Nevertheless, there is a great need to make use of both theory and practical experience to allow the right dryer to be selected. An algorithm and expert system for selection are described, with emphasis on the developments in recent years. Particularly important are areas of product specification and quality, solids handling and feed and product modification. Experience in using the algorithm is summarised, together with a number of practical case studies.