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A study of the combined effects of kinetic parameters and flow models on conversions for second order reactions
Author(s) -
Lindfors LarsEric
Publication year - 1975
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450530610
Subject(s) - plug flow , flow (mathematics) , mathematics , thermodynamics , limiting , dispersion (optics) , function (biology) , series (stratigraphy) , kinetic energy , zero (linguistics) , mechanics , chemistry , statistical physics , physics , geometry , classical mechanics , quantum mechanics , mechanical engineering , evolutionary biology , biology , engineering , paleontology , linguistics , philosophy
The present paper is a study of the interplay between kinetic parameters and different flow patterns and its effect on fractional conversions for second order reactions with arbitrary stoichiometry and arbitrary ratios between the initial concentrations of the reactants. The models studied are the normal, segregated and maximum‐mixed axial dispersion and tanks‐in‐series models. The calculations required have been performed with the aid of digital simulation and the results are presented in diagrams making possible the determination of the fractional conversion for ten different models. When plotted as a function of a reaction rate group the absolute value of the difference between the conversions for the normal and segregated models always attains its highest value for the limiting model represented by complete backmixing, while this difference is zero for the opposite limiting model, i.e. plug flow. In the case of maximum‐mixed and normal models this difference attains its highest value between plug flow and complete backmixing, but the exact value is dependent on other parameter values. The diagrams indicate that it is more important to choose the proper model for certain parameter combinations than for others: the maximum difference between the conversions for different models is about 8%; the lowest is zero.