The liquid-phase reaction in Problem P8-6B is to be carried out in a semibatch reactor. There are 500 mol of A initially in the reactor at 25 °C. Species B is fed to the reactor at 50 °C and a rate of 10 mol/min. The feed to the reactor is stopped after 500 mol of B has been fed.
(a) Plot the temperature and conversion as a function of time when the reaction is carried out adiabatically. Calculate to / = 2 h.
(b) Plot the conversion as a function of time when a heat exchanger ([UA = 100 cal/min-K) is placed in the reactor and the ambient temperature is constant at 50 °C. Calculate to t = 3 h.
(c) Repeat part (b) for the case where the reverse reaction cannot be neglected.
New parameter values:
k = 0.01 (dm3/niol . min) at 300 K with E = 10 kcal/mol V0 = 50 dm3,
v0 = 1 dm3/min, CA0 = CB0 = 10 mol/dm3 For the reverse reaction: kr = 10 s−1 at 300 K with Er = 16 kcal/mol
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