A mixture of 60% A and 40% B with relative volatility aAB=2.76 is in the upper product. It is subjected to gradual distillation to obtain 90% A and 90% B in the sub-product. The feed stream is saturated steam and is fed to the third stage at a flow rate of 250 kmol/h. The feedback ratio is 3.63. Assuming a constant molar flow rate, using the Lewis method (algebraic Calculate the required theoretical number of steps using 3. The amount of steam entering the rack A What is the molar ratio of the component?

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
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A mixture of 60% A and 40% B with relative volatility aAB=2.76 is in the upper product. It is subjected to gradual distillation to obtain 90% A and 90% B in the sub-product. The feed stream is saturated steam and is fed to the third stage at a flow rate of 250 kmol/h. The feedback ratio is 3.63. Assuming a constant molar flow rate, using the Lewis method (algebraic Calculate the required theoretical number of steps using 3. The amount of steam entering the rack A What is the molar ratio of the component?

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