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Unformatted text preview: Homework 1 Problem 6 SuperPro Designer™ Aspirin 20 points possible due Friday September 2, 2011 Grader: Israel Problem Statement: Aspirin is manufactured batch‐wise from salicylic acid and acetic anhydride. The reaction stoichiometry is defined as C7H6O3 + C4H6O3 C9H8O4 + C2H4O2 with an estimated kinetic rate expression of ‐rAspirin = k[C7H6O3][C4H6O3] where the pre‐exponential factor (k) is equal to 0.0059 m3/mol·s and the activation energy is 3 e6 J/kmol. A typical process consists of a 2 m3 reactor charged with equal molar amounts of salicylic acid and acetic anhydride. The reactor is kept at atmospheric pressure and 350 K. All components are heated to 350 K before being introduced into the system, where the temperature is held constant. Determine the mass of salicylic acid remaining after the reaction has gone for 2 hours. Method of Solution: Use the RBATCH unit in AspenPlus...
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- Fall '11