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Generalised criteria for the stability of catalytic reactors
Author(s) -
Mcgreavy C.,
Thornton J. M.
Publication year - 1970
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.5450480216
Subject(s) - exothermic reaction , isothermal process , work (physics) , pellets , instability , stability (learning theory) , mechanics , thermodynamics , materials science , control theory (sociology) , computer science , physics , control (management) , machine learning , artificial intelligence , composite material
It is well known that particles catalyzing highly exothermic reactions can have multiple steady states, which are characteristic of unstable behavior. Previous work has shown that under practical conditions the pellets are essentially isothermal, all the temperature rise being across the surrounding fluid film. A technique has been developed for such cases which enables the regions of potential local instability, if present, to be defined for arbitrary operating conditions. It is thus possible to monitor the calculation of concentration and temperature profiles in a fixed bed reactor to ascertain whether the conditions would represent multiple states and therefore non‐feasible operating conditions.