The liquid-phase reaction is carried out in a semibatch reactor. The reactor volume is 1.2 m 3 . The reactor initially contain 5 mol of B at a concentration of 0.015 kmol/m 3 . A, at an aqueous...

The liquid-phase reaction

is carried out in a semibatch reactor. The reactor volume is 1.2 m³. The reactor initially contain 5 mol of B at a concentration of 0.015 kmol/m³. A, at an aqueous concentration of 0.03 kmol/m³, is fed to the reactor at a rate of 4 drn³/min. The reaction is first order in A and half order in B with a specific reaction rate of k = 6 (m³/kmol) 1 n/min. The activation energy is 35 kJ/mol. The feed rate to the reactor is discontinued when the reactor contains 0.53 m³
of fluid.

(a) Plot the conversion, volume, and concentration as a function of time. Calculate the time necessary to achieve:

(b) 97% conversion of A.

(c) 59% conversion of B.

(d) The reaction temperature is to be increased from 25°C to 70°C and the reaction is to be carried out isothermally. At this temperature the reaction is reversible with an equilibrium constant of I 0 (m³/kmo1) 1 n. Plot the conversion of A and B and the equilibrium conversion of A as a function of time.

(e) Repeat part (d) for the case when reactive distillation is occurring. Study the effect of the evaporation rate on conversion.