Comportamiento Hidrodinámico y Térmico del Flujo Gas-Sólido en un Reactor de Tubo Vertical (Riser) del Proceso de Craqueo Catalítico (FCC) con dos Salidas Laterales Asimétricas

In this work 2D numerical simulations of gas-solid flow hydrodynamic and thermal behavior in an industrial riser is made using a Computational Fluid Dynamics model. The mixture goes out from the riser through two lateral upper asymmetric outlets. The system is considered to be adiabatic and the system is solved through a transient Eulerian approach and the Kinetic Theory for Granular Flow. The Energy Minimization Multi-Scale method (EMMS) is used as a drag model. Solid density distribution, velocity distribution, mass flow distribution and temperature profiles measured at several riser heights are analyzed. The results obtained in this work are compared with those previously obtained in a similar system but having two symmetric outlets. The model properly predicts the presence of three solid concentration and velocity zones, as well as the expected core-annular flow pattern in the riser.