Modeling and simulation of thermodynamic processes of vertical shaft kiln used for producing deadburned magnesia

A computational fluid dynamics (CFD) modeling and simulation of thermodynamic processes of vertical shaft kiln used for producing deadburned magnesia is presented. The model developed is a 2D steady state model. The combustion, particle-gas dynamics and heat transfer processes which occur inside a vertical shaft kiln are modeled by Eulerian multiphase model, and Species transport and finite volume chemical reaction model. Segregated solver is employed to solve and couple the numerical calculations from each model. Numerical approach and computational methodology are detailed. The simulated results on gas and granular bed temperatures as a function of kiln height are discussed and compared with the designed data. The simulated results show a reasonably good agreement with the designed data supplied by reference plant.