per mole% ethanol is to be fractionated at 1 atm to produce a distillate of 80 mole% ethanol and a bottoms of 2 mole% ethanol. The total condenser has a duty of 1,000,000 BTU/hr. The bottoms are withdrawn from the bottom plate. The feed is a liquid at 140°F. How many equilibrium stages are required? What is the reboiler duty (BTU/hr)? What is the reflux ratio?
per mole% ethanol is to be fractionated at 1 atm to produce a distillate of 80 mole% ethanol and a bottoms of 2 mole% ethanol. The total condenser has a duty of 1,000,000 BTU/hr. The bottoms are withdrawn from the bottom plate. The feed is a liquid at 140°F. How many equilibrium stages are required? What is the reboiler duty (BTU/hr)? What is the reflux ratio?
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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Transcribed Image Text:20.000
15.000
10.000
5,000
180 F.
140* F-
r100* F
60 F
20 F
10
-5.000
08
0.2
02
04
X. mole raction ethanol in liquid
0.6
0.8.
10
Figure 3.4. Enthalpy-composition diagram for ethanol-water mixtures at 1 atm
pressure (3). Reference state: liquid water at 32"F, liquid ethanol at 32". (By
permission of John Wiley; copyright 1950.)
A. H, enthalpy of Bquid or vapor, Bu/Ib mole
175F
172 F
oden Kueua une Ou

Transcribed Image Text:One hundred pound-moles per hour of an aqueous solution containing 20
mole% ethanol is to be fractionated at 1 atm to produce a distillate of 80 mole%
ethanol and a bottoms of 2 mole% ethanol. The total condenser has a duty of
1,000,000 BTU/hr. The bottoms are withdrawn from the bottom plate. The feed is
a liquid at 140°F. How many equilibrium stages are required? What is the reboiler
duty (BTU/hr)? What is the reflux ratio?
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