The reactions described in Example 12-7 are to be carried out isothermally at 1000°C in the reactor whose RTD is described in Example 17-4 with C_A0 = C_B0 = 0.05 mol/dm³.
a. Determine the exit selectivities using the segregation model.
b. Determine the exit selectivities using the maximum mixedness model.
c. Compare the selectivities in parts (a) and (b) with those that would be found in an ideal PFR and ideal CSTR in which the space time is equal to the mean residence time.
d. What would your answers to parts (a) through (c) be if the RTD curve rose from zero at t = 0 to a maximum of 50 mg/dm³ after 10 minutes, and then fell linearly to zero at the end of 20 minutes?

Example 12-7

Example 17-4