Predicting cold gas-solid flow in a pilot-scale dual-circulating fluidized bed: Validation of computational particle fluid dynamics model

This study uses the Eulerian-Lagrangian multiphase particle-in-cell (MP-PIC) approach, adopted in computational particle fluid dynamics (CPFD) code, Barracuda VR®, to simulate a cold-flow dual-circulating fluidized bed. The hydrodynamics is simulated using novel segregated which experimental solids circulation rate specified as an input parameter. CPFD predictions of pressures and concentration distributions are compared with results for varying bed material 76–153 kg/m2s superficial gas velocity reactor riser from 3.3 m/s 6.4 m/s. Overall trends these quantities well captured by model. Detailed sensitivity studies carried out riser-only approach fixed mass inventory. Apart drag model selection, pressure constant Ps exponent ? MP-PIC stress found have greatest influence on fluidization behavior predicted flux.