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You are to analyze the performance of a CSTR for the following parallel reaction scheme in the liquid phase: Ak1BAk3Cr1=k1CAr2=k2CAk1=A1exp(E1/RT)k2=A2exp(E2/RT) where A1=1012min1,E1=20kcal/mol,A2=106min1,E2=10kcal/mol. The enthalpy changes
You are to analyze the performance of a CSTR for the following parallel reaction scheme in the liquid phase: Ak1BAk3Cr1=k1CAr2=k2CAk1=A1exp(E1/RT)k2=A2exp(E2/RT) where A1=1012min1,E1=20kcal/mol,A2=106min1,E2=10kcal/mol. The enthalpy changes of the two reactions at 25C are equal to: H1=15kcal/mol,H2=18kcal/mol. The feed to the CSTR consists of pure species A at 25C and a concentration of 3.2mol/Ls with a volumetric flow rate of 4.5L/min. The volume of the CSTR is equal to 2.3L. The heat capacities at constant pressure for all species are equal to 25cal/mol.K. To enhance the selectivity for production of species B, it is desirable to operate at high temperatures: however, undesirable decomposition reactions take place at temperatures above 100C. Therefore, the CSTR is to be operated at 100C. a) Calculate the concentrations of species A, B, and C leaving the CSTR at 100C. You may assume that the density of the liquid phase does not depend on temperature. b) Calculate the rate of heat transfer to or from the reactor to achieve a reactor temperature equal to 100C. Be sure to indicate whether heat is removed from the reactor or heat is added to the reactor
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