DYNA JOURNAL ENGINEERING

Key words:

CFD, CFB, Modelo Euleriano-Granular, KTGF, proceso FCC, riser, CFD, CFB, Eulerian-Granular Model, FCC process, KTGF, riser.

Article type:

ARTICULO DE INVESTIGACION / RESEARCH ARTICLE

Section:

RESEARCH ARTICLES

Circulating fluidized beds (CFB) has been applied widely in many industries mainly because of its high mass, momentum, and energy transfer capacity. In Chemical Engineering Industry, among other applications is used in the FCC Process riser in the Oil Refining facilities. To get a proper riser design, a good understanding and modeling of gas-solid flow behavior is required, which have been done applying the Computational Fluid Dynamics in the last 30 years. In this paper a numerical analysis of gas-solid flow hydrodynamics is done, varying the gas superficial velocity and the solid mass flux in the riser's inlets. The Eulerian-Granular model is used, and the fundamental equations of mass and momentum, and the Kinetic Theory of Granular Flow and constitutive equations are numerically solved. The results of solid concentration and the granular velocity in the radial direction at specific axial coordinate are analyzed. The CFD model proposed predicts the core-annular flow pattern properly for every operation conditions analyzed.