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16 Nov 2019
A total feed of 2000 mol/h having as overall composition of 42 mol % heptane and 58 mol % ethyl benzene is to be fractionated at 101, 3 kPa pressure to give a distillate containing 97 mol % heptane and a bottoms containing 1.1 mol % heptane. The feed enters the tower partially vaporized so that 40 mol % is liquid and 60 mol % vapor. Equilibrium data are given in Problem 11.4-2. Calculate the following: (a) Moles per hour distillate and bottoms. (b) Minimum reflux ratio R_m. (c) Minimum steps and theoretical trays at total reflux. (d) Theoretical number of trays required for an operating reflux ratio of 2.5:1. Compare with the results of Problem 11.4-2, which uses a saturated liquid feed.
A total feed of 2000 mol/h having as overall composition of 42 mol % heptane and 58 mol % ethyl benzene is to be fractionated at 101, 3 kPa pressure to give a distillate containing 97 mol % heptane and a bottoms containing 1.1 mol % heptane. The feed enters the tower partially vaporized so that 40 mol % is liquid and 60 mol % vapor. Equilibrium data are given in Problem 11.4-2. Calculate the following: (a) Moles per hour distillate and bottoms. (b) Minimum reflux ratio R_m. (c) Minimum steps and theoretical trays at total reflux. (d) Theoretical number of trays required for an operating reflux ratio of 2.5:1. Compare with the results of Problem 11.4-2, which uses a saturated liquid feed.
Trinidad TremblayLv2
29 Mar 2019