Scale-up in plug-flow reactors: Laminar feed

Similarity parameters are derived to correlate the selectivity of mixing controlled paraliel reactions within plug‐flow reactors with two types of static mixing elements for both aqueous and viscous solutions. For the case of laminar reactor feed, the Kolmogoroff time is shown to correlate selectivi...

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Bibliographic Details
Published in:AIChE journal 2001-01, Vol.47 (1), p.31-38
Main Authors: Forney, L. J., Penney, W. R., Vo, Hanh X.
Format: Article
Language:English
Subjects:
Applied sciences
Chemical engineering
Exact sciences and technology
Reactors
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Summary:Similarity parameters are derived to correlate the selectivity of mixing controlled paraliel reactions within plug‐flow reactors with two types of static mixing elements for both aqueous and viscous solutions. For the case of laminar reactor feed, the Kolmogoroff time is shown to correlate selectivity in turbulent reactors provided the reactor Reynolds number Re < ReC. The upper limit ReC for the reactor Reynolds number is constrained by the ratio of reactant feed‐to‐total volumetric flow rate. Moreover, for larger reactor Reynolds number Re > ReC, the inertial time scale defined in terms of a reactor feed length correlates selectivity. Scaling laws are derived for both reactor diameter and length, and suggestions are made for predicting selectivity with larger turbulent feed rates.
ISSN:0001-1541
1547-5905
DOI:10.1002/aic.690470105