The elementary irreversible organic liquid-phase reaction A + B −−→ 2 C  is carried out adiabatically in a flow reactor. The feed stream enters the reactor at 45oC, CAO = 7 kmol/m3 , CBO = 9 kmol/m3 , and with a volumetric flow rate of 5 dm3 /s. 

(a) Calculate the PFR and CSTR volumes necessary to achieve 70% conversion. How would these two volumes compare with an isothermal operation? 

(b) What is the maximum inlet temperature one could have so that the boiling point of the liquid (600 K) would not be exceeded even for complete conversion? 

 (c) Plot the temperature and conversion as a function of PFR volume (i.e. down the length of the reactor).

 (d) Calculate the conversion that can be achieved in one 3.5 dm3 CSTR and in two 1.75 dm3 CSTRs in series. Additional information: Ho A (273) = -18 kcal/mol, Ho B (273) = -12 kcal/mol, Ho C (273) = -22.5 kcal/mol, CPA = CPB = CPC = 24 cal/mol·K, and k = 0.025 dm3 mol−1 sec−1 at 350 K, EACT = 8,500 cal/mol.