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The elementary, exothermic, irreversible gas phase reaction AB+C (rate constant ka ) is carried out in an adiabatic reactor under steady state conditions. Species A
The elementary, exothermic, irreversible gas phase reaction AB+C (rate constant ka ) is carried out in an adiabatic reactor under steady state conditions. Species A and an inert 1 are fed to the reactor in equimolar amounts at temperature To. Species heat capacities Cp are given in the Table. The initial volumetric flow rate of the feed is 10L/min. The total molar flow rate of the feed is 40mol/min. The feed temperature is 500K. Additional Information: The rate constant follows an Arrhenius law with preexponential factor equal to 4.29108min1 and activation energy of 70kj/mol. a) What is the outlet temperature of a PFR reactor that achieves 80% conversion of A? (2.5\%) b) What is the volume of a CSTR reactor needed to achieve 80% conversion of A?(2.5%) c) If the reaction is carried out to achieve 80% conversion in an adiabatic PFR, would the outlet temperature be higher, lower or the same as the outlet temperature of an adiabatic CSTR? Explain. (2%) for points (d) and (e) we assume now that the reaction is reversible A=B+C d) Calculate the equilibrium conversion for this reaction at 560K. Use the following Gibbs energy table and the Van't Hoff equation: Gk=RTln(Ke9). (3\%) e) Discuss the process design/configurations that can be used to surpass the equilibrium conversion you calculated in part d) (2%)
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