Scaling of catalytic cracking fluidized bed downer reactor based on CFD simulations-Part II: effect of reactor scale.The practical realization of the scaling up of gas-solid multiphase flow reactors with chemical reactions is hindered by chaotic flow behaviors and complex heat and mass transfers in the reactor.  To anticipate the behavior of reactive flow, a Eulerian-Eulerian CFD model, two-fluid model, was constructed, which was combined with the kinetic theory of granular flow.  The CFD model accurately predicted the species composition distribution. 
CFD
To anticipate the behavior of reactive flow, a Eulerian-Eulerian CFD model, two-fluid model, was constructed, which was combined with the kinetic theory of granular flow.  The CFD model accurately predicted the species composition distribution. 
CFD model
To anticipate the behavior of reactive flow, a Eulerian-Eulerian CFD model, two-fluid model, was constructed, which was combined with the kinetic theory of granular flow. 
Eulerian-Eulerian CFD model
To anticipate the behavior of reactive flow, a Eulerian-Eulerian CFD model, two-fluid model, was constructed, which was combined with the kinetic theory of granular flow. 
two-fluid model
To anticipate the behavior of reactive flow, a Eulerian-Eulerian CFD model, two-fluid model, was constructed, which was combined with the kinetic theory of granular flow. 
kinetic theory of granular flow
A four-lump kinetic model was chosen to represent the mechanism of the catalytic cracking reaction of heavy oil from the pyrolysis of waste plastic. 
four-lump kinetic model