Modelling the internal flow structure of circulating fluidized beds

Abstract

Abstract A simple hydrodynamic model for Circulating Fluidized Beds has been developed. The mathematical model, based on the core‐annulus flow structure, is shown to be able to predict the two‐phase flow characteristics and it requires only two measurable steady‐state parameters, namely the experimental average voidage profile along the riser, or equivalently the pressure distribution, and the net solids circulation rate. The model has been successfully tested using recently obtained literature data covering a variety of reactor configurations and operating conditions.