Experimental demonstration of the micromixing process

A simple experiment demonstrates the validity of the concepts of micromixing, by setting two reactions which compete for the consumption of a reagent. The experiment, in which we hmit ourselves to establishing a balance of the reagents consumed at the end of the ejqjeriment, proves the fact that the degree of execution of each of the two reactions depends, for carefully selected conditions, on the micromixing of the constituents.  

6 These ideas and experiments were introduced by Fournier, M.C., Falk, L. and Villermaux J. (1996), Chemical Engineering Science, Vol. 51(22), pp. 5053-5064. 

We consider the following two chemical reactions, for which products A and B are competing to consume product C  

The products A and B are introduced and mixed beforehand inside the reactor. We denote by Cabo the initial concentrations of products A and B, which are assumed to be identical. The reaction can start as soon as reagent C is introduced, its initial concentration being denoted by Cco. We consider the situation where products A and B are in strong excess, that is, Cco Cabo Both reactions are assumed to be of order 1 with respect to each of the constituents. The kinetic constants of both reactions are denoted by h and fo. It is assumed that the first reaction is much faster than the second, that is, h  

For this experiment, if, from time t = 0, product C is already perfectly mixed with products A and B, then product C will be almost totally consumed by reaction 1. The resolution of the kinetic equations shows that the concentrations of products A and B vary in time according to  

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