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Feedstock conversion and yield products are studied through a 3D model simulating the main reactor of the fluid catalytic cracking (FCC) process. Computational fluid dynamic (CFD) is used with Eulerian-Eulerian approach to predict the fluid catalytic cracking behavior. The model considers 12 lumps with catalyst deactivation by coke and poisoning by alkaline nitrides and polycyclic aromatic adsorption to estimate the kinetic behavior which, starting from a given feedstock, produces several cracking products. Different feedstock compositions are considered. The model is compared with sampling data at industrial operation conditions. The simulation model is able to represent accurately the products behavior for the different operating conditions considered. All the conditions considered were solved using a solver ANSYS CFX 14.0. The different operation process variables and hydrodynamic effects of the industrial riser of a fluid catalytic cracking (FCC) are evaluated. Predictions from the model are shown and comparison with experimental conversion and yields products are presented; recommendations are drawn to establish the conditions to obtain higher product yields in the industrial process. [ABSTRACT FROM AUTHOR]

In a 3D model simulating in the riser of the fluid catalytic cracking (FCC) was studied feedstock conversion and yield products. Computational fluid dynamics (CFD) and Eulerian-Eulerian approach with a 12-lump model was used to predict the hydrodynamic and kinetic behavior, respectively. All the equations and conditions were solved using a solver Ansys CFX 14.0. The different operation variables and hydrodynamic effects of the riser are evaluated. Predictions from the model are shown and comparison with experimental data is presented; recommendations are drawn to establish the conditions to obtain higher product yields in the industrial process. [ABSTRACT FROM PUBLISHER]