The irreversible isothermal liquid phase series reaction
is carried out in a nonideal CSTR. Each reaction is zero order. In a separate batch experiment it was found that for a initial concentration of A of 2.0 mol/dm3 species A was completely consumed in exactly 10 minutes. For a entering concentration of A of 2.0 mol/dm3, the following mean exit concentrations of A and B were measured
The reactor can be well described by the segregation model.
(a) If possible determine the specific reaction rate constants k1A, k2B, and k3C.
(b) If possible determine the mean residence time and the variance.
(c) Now suppose this nonideal reactor can be modeled as an ideal CSTR with dead volume. What would be the exit concentration of A predicted by the maximum mixedness model for a first order reaction,
with k=0.4 min-1. The entering concentration of A is CA0=2.0 mol/dm3?
U of M Doctoral Qualifying Exam January, 1998