Micromixing effects on complex reactions in a CSTR

Abstract Several errors and mistakes are pointed out in a paper published by Rao and Rao under the above title, concerning the influence of micromixing on conversion and yield for consecutive-competing second order reactions. The influence of the stoichiometric ratio and the existence of limiting conversion and yield for instantaneous reactions with unmixed feed are especially overlooked in their simulations. Several of their plots are erroneous. A correct treatment of these different points is given, using in particular a deterministic micromixing model (IEM) which is found to show definite advantages over random coalescence simulation models.