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Stream 1 Stream 2 Stream 3 Stream 4 Stream 5 Stream 6 Flowrate 100 (mole/s) Methanol 55% 100% 10% mole% Water 45% 0% 90% mole%

Stream 1 Stream 2 Stream 3 Stream 4 Stream 5 Stream 6 Flowrate 100 (mole/s) Methanol 55% 100% 10% mole% Water 45% 0% 90% mole%

Introduction to Chemical Engineering Thermodynamics
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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Consider 100 moles/s of a mixture of methanol and water containing 55 mole % methanol (Stream #1). A distillation column is available that could separate and recover a portion of methanol from the mixture stream. (Note: Stream #3 is pure methanol). The remaining water and methanol from the distillation column (Stream #4) is split into streams #5 and #6 where stream #6 is recycled and mixed with stream #1. (Note: there is no reaction). The distillation column has been designed so that 67% of the methanol in stream #2 is recovered in stream #3. a) Perform a degree of freedom analysis for each unit of the process and the total process (4 degree of freedom calculations in total). Clearly indicate what the unknowns are and what equations must be solved (not just the number of unknowns/equations). b) Calculate the unknown flowrates and compositions (mole%) and complete the summary table. 1 55% Methanol Mixer 45% water Distillation 4 3 5 10% Methanol Methanol 90% water Stream 1 Stream 2 Stream 3 Stream 4 Stream 5 Stream 6 Flowrate 100 (mole/s) Methanol 55% 100% 10% mole% Water 45% 0% 90% mole%
Transcribed Image Text:Consider 100 moles/s of a mixture of methanol and water containing 55 mole % methanol (Stream #1). A distillation column is available that could separate and recover a portion of methanol from the mixture stream. (Note: Stream #3 is pure methanol). The remaining water and methanol from the distillation column (Stream #4) is split into streams #5 and #6 where stream #6 is recycled and mixed with stream #1. (Note: there is no reaction). The distillation column has been designed so that 67% of the methanol in stream #2 is recovered in stream #3. a) Perform a degree of freedom analysis for each unit of the process and the total process (4 degree of freedom calculations in total). Clearly indicate what the unknowns are and what equations must be solved (not just the number of unknowns/equations). b) Calculate the unknown flowrates and compositions (mole%) and complete the summary table. 1 55% Methanol Mixer 45% water Distillation 4 3 5 10% Methanol Methanol 90% water Stream 1 Stream 2 Stream 3 Stream 4 Stream 5 Stream 6 Flowrate 100 (mole/s) Methanol 55% 100% 10% mole% Water 45% 0% 90% mole%
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