APV Dryer Handbook - Umbc

■ From a knowledge of the product, select the type(s) of dryer which it
appears would satisfactorily handle both the wet feedstock and the dried
product. Relate this to the equipment having the highest application rating
in Table 1.
■ From a knowledge of the required evaporative duty, i.e., the total mass
of water to be evaporated per unit time and by the application of the
approximate Eav figure given in Table 1, estimate the size of the dryer.
Although a great deal of fundamental work has been carried out into the
mechanics of drying which enables recommendations to be made, it is most
desirable for pilot plant testing to be done. This is not only necessary to support
theoretical calculations but also to establish whether a particular dryer will
satisfactorily handle the product. In the final analysis, it is essential to discuss the
drying application with the equipment manufacturer who has the necessary test
facilities to examine the alternatives objectively, and has the correlated data and
experience from field trials to make the best recommendation.
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