Thermal analysis of a rotating fluidized bed dryer in static geometry dryer with and without slit

Abstract A rotating fluidized bed in a static geometry dryer without a slit is highly recommended in multiple operations, such as separation, mixing, gasification, combustion, particle coating, and drying process intensification. The present analysis proposed a highly efficient moisture removal technique into optimized energy forms, including electrical and thermal energy used in air heating and particle fluidization. Hence, to reduce a considerable energy loss in rotating fluidized bed chambers, the energy exergy analysis of granular drying is carried out for two distinct drying chambers without and with a slit. Granular drying has been conducted in dryers at 55 °C –65 °C, airflow rate of 400–600 m3/h, drying inventory of 300–500 g, energy utilized, and energy utilization ratio. It is observed that. In the slit-less rotating fluidized bed with static geometry dryer, the drying efficiency is increased by 5.6%, the drying cost decreased by 19.8%, and the payback period is reduced by 54% compared to the rotating fluidized bed dryer in static geometry.