(a) Plot the conversion and temperature profiles up to a PFR reactor volume of 10 dm3 for the case when the reaction is reversible with Kc = 10 m3/kmol at 450 K. Plot the equilibrium conversion profile.
(b) Repeat (a) when a heat exchanger is added, Ua = 20 cal/m3/s/K, and the coolant temperature is constant at Ta = 450 K.
Repeat (b) for a co-current heat exchanger for a coolant flow rate of 50 g/s and CP = 1 cal/g • K, and an inlet coolant temperature of T.M = 450 K. Vary the coolant rate (10c<1,000 g/s).
(d) Repeat (c) for counter current coolant flow.
(e) Compare your answers to (a) through (d) and describe what you find. What generalizations can you make?
(f) Repeat (c) and (d) when the reaction is irreversible but endothermic with ΔH°Rx = 6,000 cal/mol. Choose Ta0= 450 K.
(g) Discuss the application of runaway criteria for the irreversible reaction occurring in a CSTR. What value of T„ would you recommend to prevent runaway if K = 3 and Ta = 450 K?