Concurrent Moving Bed Model Applyed In Cyclones, Part Ii: Simultaneous Heat And Mass Transfer In Convective Drying [aplicação Do Modelo Do Leito Deslizante E Escoamento Concorrente Para Ciclones, Parte Ii: Transferência Simultânea De Calor E De Massa Na Secagem Convectiva]

Abstract

The basic characteristic of the rough particle flow in the cyclone is 100% of collection efficiency. This phenomenon occurs because as soon as particles enter the equipment they go to the cyclone wall and move downward to the hopper. In this case, the gas-particle heat and mass transfer occur basically close to cyclone wall, with same concurrent movement Due to this fluid dynamics description, it is proposed in this paper a model to heat and mass transfer during the rough rice drying in cyclones based on concurrent movement model. The model results are compared with the ones obtained experimentally in two Lapple cyclones using rough rice as test material. It was observed a good agreement between experimental and model results of air temperature and humidity as well rice grains temperature and moisture content.101899