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Dynamic modelling of multitubular catalytic reactors
Author(s) -
Stankiewicz Andrzej,
Eigenberger G. Gerhart
Publication year - 1991
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.270140609
Subject(s) - baffle , discretization , transient (computer programming) , flow (mathematics) , mechanics , computer science , dynamic simulation , homogeneous , materials science , simulation , mechanical engineering , nuclear engineering , physics , engineering , mathematics , thermodynamics , mathematical analysis , operating system
This paper presents a study on modelling and simulation of transient operational characteristics in multitubular fixed‐bed reactors. The dynamic model of the reactor is based on a “porous body” approach which regards the intertubular space as a pseudo‐homogeneous environment. Such an approach permits to take into account most factors in the geometrical design of the unit and thus to study the influence of various shell‐side geometrical and operational parameters on the reactor behaviour. Based on the model, the dynamic responses of the two most common industrial reactor designs, i.e. the parallel flow unit with distributing plates and the crossflow reactor with disk‐and‐doughnut baffles have been investigated and compared. In addition, some problems of correct space discretization and use of time‐dependent regridding procedures, are discussed.