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categoryهندسة كيميائية schoolبكالوريوس event_available2026-07-13

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Problem 1: Maximizing the selectivity of the famous Tranbouze Reactions Reactant A decomposes by three simultaneous reactions to from three products, one that is desired, D, and two that are undesired X and Y. These gas-phase reactions, along with the approapriate rate laws, are called the Trambouze Reactions (AIChE Journal, 5, 384). 1) A - X A 3) A - Y 2) -1A =x=k₁ = 0.0001 mol 1-s -12A=Dk2[A] = (0.0015 s¹) [A] -13A = ry=k3 [A]² = (0.008) [A]² The specific reaction rates are given at 300 K and the activation energies for reactions (1), (2), and (3) are E₁ = 10,000 kcal/mole, E₂ = 15,000 kcal/mole, and E3 = 20,000 kcal/mole. a) How, and under what conditions (e.g., reactor type(s), temperature, concentrations), should the reaction be carried out to maximize the selectivity of species B for an entering concentration of species A of 0.4 M and volumetric flow rate of 2.0 1/s? b) How could the conversion of A be increased and keep selectivity relatively high? Problem 2: Series reactions in a CSTR The elementary liquid-phase series reaction shown below is carried out in a CSTR. ABC a) Determine the exit concentrations of A, B, and C from the CSTR. b) Find the value of the residence time t that will maximize the concentration of B.

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