Optimal design of well-mixed fluidized bed dryers

In a recent article, Baker described a novel technique fbr estimating the e nergy consumption of well-mixed fluidized bed dryers based on the use of ex perimental drying curves. An integrated approach to performing sizing and e nergy consumption calculations for such dryers using this technique is desc ribed in the present paper. A computer program, which includes not only the dryer simulator but also a heat recovery module and an exhaust air recycle option, is used to evaluate the viability of different energy-conservation strategies. The effects of operating parameters such as bed temperature, s olids loading and air velocity on energy consumption and bed area are also explored. The observed drying kinetics are shown to have a major effect on the optimal design and operation of the dryer.