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A 3D model was developed for simulating the hydrodynamics of polypropylene powders in multi‐zone circulating reactors (MZCRs). This model was used to design the proper geometry of the reactor. The model was based on computational fluid dynamics (CFD) in which an Eulerian‐Eulerian approach, incorporating the kinetic theory of granular flow (KTGF), was used to describe gas and solid flow equations...
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