External Mass-Transfer Effect on Multiple Steady States for Heterogeneously Catalytic Reactions in an Isothermal CSTR

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Hsing-Ya Li¹ 

[1] Department of Chemical Engineering, National Lien Ho College of Technology and Commerce

关键词: Multiple Steady States;    Hysteresis and Bistability;    Zero Eigenvalue Analysis;    External Mass Transfer;    Heterogeneous Catalysis;   

DOI  :  10.1252/jcej.32.134

来源: Maruzen Company Ltd

【 摘 要 】

References(7)The effect of external mass transfer on the steady state multiplicity is studied. We analyzed a complex system of heterogeneously catalytic reactions in an isothermal CSTR, where the concentrations in bulk fluid are different from those on the surface of nonporous catalysts. The system is proved to admit multiple steady states by a zero eigenvalue analysis and a set of parameters generating multiplicity is constructed. Numerical result shows the hysteresis and bistability occur for certain range of external mass-transfer coefficients. As increasing either the flow rate or the feed concentration of a reactant, it is necessary to increase the mass-transfer coefficient to maintain the multiplicity.

【 授权许可】

Unknown