Question: rectifaction using partially vaporized feed Textbook Problem 26.4-5 Rectification Using Partially Vaporized Feed A total feed of 200mol/h having an overall composition of 42mol% heptane

rectifaction using partially vaporized feed

Textbook Problem 26.4-5 Rectification Using Partially Vaporized Feed A total feed of 200mol/h having an overall composition of 42mol% heptane and 58mol% ethyl benzene is to be fractionated at 101.3kPa pressure to give a distillate containing 97mol% heptane and a bottoms containing 1.1mol% heptane. The feed enters the tower partially vaporized so that 40mol% is liquid and 60mol% is vapor. Equilibrium data are given in problem 26.4-2. Using the McCabe-Thiele method, calculate the following: (a) Moles per hour distillate and bottoms. (b) Minimum reflux ratio Rm. (c) Minimum steps and theoretical trays at total reflux. (d) Theoretical number of trays required for an operating reflux ratio of 2.5:1. Indicate the optimum feed tray. Compare the results of problem 26.4-2 (shown below), which uses a saturated liquid feed. Results of problem 26.4-2:D=85.3 mol /h,W=114.7mol/h,9.5 trays + reboiler, feed on tray 6 from top

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