Table of Contents
Journal of Industrial Mathematics
Volume 2014, Article ID 460857, 16 pages
Research Article

Mathematical Model of a Flash Drying Process

Gumbooya Pty Ltd. 3 Gumbooya Street, Allambie Heights, NSW 2100, Australia

Received 16 September 2013; Revised 13 December 2013; Accepted 23 December 2013; Published 24 February 2014

Academic Editor: Santiago Laín

Copyright © 2014 Erik W. Aslaksen. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The paper presents a basic model of the flash drying process, as it is applied in a number of industrial applications, and illustrates this by means of a particular application: the drying of subbituminous coal. Besides its economic importance, that application is representative of those where the product is combustible, so that the drying needs to be conducted in an inert atmosphere, which is achieved by recycling some of the drying gas. A novel feature of the model is that it takes explicit account of the transport of heat and moisture within the coal particles. The model provides the basis for the development of a tool to support the design of a flash drying plant.