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In the Keyes process for making absolute alcohol from alcohol containing 5% by weight of water, a third component benzene is added to the alcohol feed. Benzene lowers the

In the Keyes process for making absolute alcohol from alcohol containing 5% by weight of water, a third component benzene is added to the alcohol feed. Benzene lowers the

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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In the Keyes process for making absolute alcohol from alcohol containing 5% by weight
of water, a third component benzene is added to the alcohol feed. Benzene lowers the
volatility of alcohol and takes the entire water impurity overhead as a constant boiling
mixture of composition 18.5% alcohol, 7.5% water, and 74% benzene. The residue from
the still is absolute alcohol. Compute the amount of benzene and impure alcohol required
for the production of 2500 kg absolute alcohol. 

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