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Catalyst regeneration kinetics in the presence of pore blockage
Author(s) -
Chang Yuli,
Perlmutter D. D.
Publication year - 1989
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690350306
Subject(s) - coke , kinetics , catalysis , porosity , chemical engineering , chemical kinetics , chemistry , regeneration (biology) , process (computing) , volume fraction , reaction rate , volume (thermodynamics) , materials science , thermodynamics , organic chemistry , engineering , physics , quantum mechanics , biology , microbiology and biotechnology , computer science , operating system
A model is developed for fluid‐solid reaction kinetics in a porous solid. The model is based on a convergent‐divergent pore structure and accounts for pore blockage and inside cavities. A numerical study applied the model to the process of coke removal for catalyst regeneration. The calculated results show that in the presence of pore occlusion, the reaction rates are significantly reduced at the beginning of reaction. At higher levels of coke loading the reaction behavior can be especially affected by the volume fraction of the divergent pores. This behavior can be used to select catalysts with pore structures that improve control of the regeneration process.