CFD Study of Industrial FCC Risers: The Effect of Outlet Configurations on Hydrodynamics and Reactions

International Journal of Chemical Engineering. 2012;2012 DOI 10.1155/2012/193639

 

Journal Homepage

Journal Title: International Journal of Chemical Engineering

ISSN: 1687-806X (Print); 1687-8078 (Online)

Publisher: Hindawi Publishing Corporation

LCC Subject Category: Technology: Chemical technology: Chemical engineering

Country of publisher: Egypt

Language of fulltext: English

Full-text formats available: PDF, HTML, ePUB, XML

 

AUTHORS

Gabriela C. Lopes (School of Chemical Engineering, University of Campinas, 500 Albert Einstein Avenue, 13083-970 Campinas, SP, Brazil)
Leonardo M. Rosa (School of Chemical Engineering, University of Campinas, 500 Albert Einstein Avenue, 13083-970 Campinas, SP, Brazil)
Milton Mori (School of Chemical Engineering, University of Campinas, 500 Albert Einstein Avenue, 13083-970 Campinas, SP, Brazil)
José R. Nunhez (School of Chemical Engineering, University of Campinas, 500 Albert Einstein Avenue, 13083-970 Campinas, SP, Brazil)
Waldir P. Martignoni (PETROBRAS, 65 República do Chile Avenue, 20031-912 Rio de Janeiro, RJ, Brazil)

EDITORIAL INFORMATION

Blind peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 14 weeks

 

Abstract | Full Text

Fluid catalytic cracking (FCC) riser reactors have complex hydrodynamics, which depend not only on operating conditions, feedstock quality, and catalyst particles characteristics, but also on the geometric configurations of the reactor. This paper presents a numerical study of the influence of different riser outlet designs on the dynamic of the flow and reactor efficiency. A three-dimensional, three-phase flow model and a four-lump kinetic scheme were used to predict the performance of the reactor. The phenomenon of vaporization of the liquid oil droplets was also analyzed. Results showed that small changes in the outlet configuration had a significant effect on the flow patterns and consequently, on the reaction yields.