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Catalytic Ozone Decomposition in a Gas‐Solids Circulating Fluidized‐Bed Riser
Author(s) -
Kong Lei,
Zhu Jesse,
Zhang Chao
Publication year - 2014
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201300163
Subject(s) - fluid catalytic cracking , computational fluid dynamics , catalysis , fluidized bed combustion , reaction rate , fluidized bed , decomposition , particle (ecology) , thermodynamics , chemistry , mechanics , materials science , chemical engineering , engineering , physics , organic chemistry , geology , oceanography
Computational fluid dynamics (CFD) modeling of the catalytic ozone decomposition reaction in a circulating fluidized‐bed (CFB) riser, using iron‐impregnated fluid catalytic cracking particles as catalyst, is carried out. The catalytic reaction is defined as a one‐step reaction, and the reaction equation is modified by with respect to the particle surface area, A p , and an empirical coefficient. The Eularian‐Eularian method with the kinetic theory of granular flow is used to solve the gas‐solids two‐phase flow in the CFB riser. The simulation results are compared with experimental data, and the reaction rate is modified by using an empirical coefficient, to provide better simulation results than the original reaction rate. Moreover, the particle size has great effects on the reaction rate. The generality of the CFD model is further validated under different operating conditions of the riser.