CFD analysis of hydrodynamic, heat transfer and reaction of three phase riser reactor

Kinetic study of catalytic cracking of heavy oil over an in-situ crystallized FCC catalyst

“…These results can be explained by higher reaction rates, stronger secondary and thermal cracking with increasing reaction temperature. As for the yield of coke, there was much liquid coke [19,20] due to poor vaporization effect at low reaction temperature. The optimal reaction temperature was 490°C for the production of light oil.…”

Progress in kinetic predictions for complex reaction of hydrocarbons: from mechanism studies to industrial applications

“…To simulate real industrial processes, computational fluid dynamic (CFD) models have been increasingly adopted to simulate cracking processes coupled with simple lumping kinetics and transfer process equations. For example, by adopting six-lump kinetic reactions in the gas phase, a three-dimensional CFD model was developed by considering three-phase hydrodynamics, cracking reactions, and heat and mass transfer (Behjat et al 2011). Souza et al (2006) studied a model of seven PCs based on an in-house two-dimensional CFD axi-symmetric model.…”

2D CFD-PBM simulation of hydrodynamic and particle growth in an industrial gas phase fluidized bed polymerization reactor

“…Generally, two different categories of CFD models can be applied for modeling multiphase gas-solid flow, namely Eulerian-Eulerian and Eulerian-Lagrangian formulations (Behjat et al, 2011;Chen et al, 2011a;Reddy and Joshi, 2010;Zimmermann and Taghipour, 2005 A c c e p t e d M a n u s c r i p t 5 provides a more reliable and detailed representation of the fluidized bed since it tracks each particle-particle collision. This model performs more efficiently when the number of particles are small (typically <1× 10 6 ), and dispersed volume fraction does not exceed 10 % of the mixture in any region (i.e., in academic researches on a laboratory scale), due to high computational cost.…”