Question 2 (25 points) (a) Starting from the Ergun equation for pressure on packed bed reactor dP pu 1- 150(1- - £)u - +

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Question 2 25 Points A Starting From The Ergun Equation For Pressure On Packed Bed Reactor Dp Pu 1 150 1 U 1 (120.2 KiB) Viewed 14 times

Question 2 (25 points) (a) Starting from the Ergun equation for pressure on packed bed reactor dP pu 1- 150(1- - £)u - +1.75ρια dz Pgc(yd) $ yd Show in clear steps that the pressure for a gas phase can be given as function of the catalyst weight and conversion as follows dy a T (1+EX) dW 2y T. where y is P/P, and a is a constant. (5 points) =- ) (b) For the two plug reactors in series shown in the figure below, the intermediate conversion is 40% and the final conversion is 80%. The entering molar flow rate is 0.4 mol s!. i) Calculate the reactor volumes V and V2 (12 points) ii) What is the volume of a single CSTR operating at the same entering molar flow and achieving the same conversion (i.e. 80%)? Comment on the result. (8 points) 2 FA1 1 X = 0.4 FAQ FA X2 = 0.8 Show all details of your working solution and equations used. х 0.0 0.1 0.2 0.4 0.6 0.7 [Fad-wal (m) 0.89 1.08 1.33 3.54 5.06 0.8 2.05 8.0 Information: Simpson's rule 1 = [f(x) +4E=bda f(x;)+22=2ven f(x;)+f(x)]