Abstract
A lumped parameter model is used to describe temperature gradients in bench-scale, fixed-bed catalytic reactors cooled at the wall. A dimensionless criterion is derived for evaluating the significance of intrareactor heat transport limitations in cases of integral conversion and zero order reactions. The new criterion is of nearly the same form as an earlier “hot spot” criterion, but is less conservative. Application of the criterion to published data on methylcyclohexane dehydrogenation indicates significant influence of intrareactor heat transport on the kinetics.
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