Numerical Study of the Coupled Flow Field in a Double-spray Calciner

Aiming at the coupled processes of combustion and decomposition inside a calciner, multiphase species transportation method is adopted to simulate the complex physical and chemical process. With shrink-core reaction model for raw meal, raw meal particle phase is studied by Euler-Euler method. The coupled processes inside calciner are simulated by solving the species transportation equations between different phases together with fluid dynamics equations. Finally a good consistency is achieved by comparing simulation data with test data from production line and some optimized schemes for flow field of calciner are put forward by analyzing the simulation results.