One hundred kmol/h of liquid alcohols containing, by moles, 40% methanol (M), 35% ethanol (E), 15% isopropanol (IP) and 10% normal propanol (NP) are distilled in two distillation columns. The distillate from the first column is 98% pure M with a 96% recovery of M. The distillate from the second is 92% pure E with a 95% recovery of E from the process feed. Assume no propanols in the distillate from Column C1, no M in the bottoms from Column C2, and no NP in the distillate from Column C2.Calculate the flow rates in kmol/h of each component in each feed, distillate and bottoms. Draw a labeled block flow diagram and include the material balances.Calculate the purity of the propanol mixture leaving as bottoms from the second column.If the recovery of ethanol is fixed at 95%, what is the maximum purity of the ethanol in the distillate from C2?

By figure (Given) Find The flow rates in kmol/h of each component in form of a table Purity of the…

Answered: One hundred kmol/h of liquid alcohols…

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

Section: Chapter Questions

Problem 1.1P

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One hundred kmol/h of liquid alcohols containing, by moles, 40% methanol (M), 35% ethanol (E), 15% isopropanol (IP) and 10% normal propanol (NP) are distilled in two distillation columns. The distillate from the first column is 98% pure M with a 96% recovery of M. The distillate from the second is 92% pure E with a 95% recovery of E from the process feed. Assume no propanols in the distillate from Column C1, no M in the bottoms from Column C2, and no NP in the distillate from Column C2.
1. Calculate the flow rates in kmol/h of each component in each feed, distillate and bottoms. Draw a labeled block flow diagram and include the material balances.
2. Calculate the purity of the propanol mixture leaving as bottoms from the second column.
3. If the recovery of ethanol is fixed at 95%, what is the maximum purity of the ethanol in the distillate from C2?

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