One thousand kg/h of a 45 wt% acetone-in-water solution is to be extracted at 25oC in a continuous, countercurrent system with pure 1,1,2trichloroethane to obtain a raffinate containing 10 wt% acetone. Using the following equilibrium data, determine with a right-triangle diagram: (a) the minimum flow rate of solvent;(b) the number of stages required for a solvent rate equal to 1.5 times minimum; (c) the flow rate and composition of each stream leaving each stage.
One thousand kg/h of a 45 wt% acetone-in-water solution is to be extracted at 25oC in a continuous, countercurrent system with pure 1,1,2trichloroethane to obtain a raffinate containing 10 wt% acetone. Using the following equilibrium data, determine with a right-triangle diagram: (a) the minimum flow rate of solvent;(b) the number of stages required for a solvent rate equal to 1.5 times minimum; (c) the flow rate and composition of each stream leaving each stage.
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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Question
One thousand kg/h of a 45 wt% acetone-in-water solution is to be extracted at 25oC in a continuous, countercurrent system with pure 1,1,2trichloroethane to obtain a raffinate containing 10 wt% acetone. Using the following equilibrium data, determine with a right-triangle diagram: (a) the minimum flow rate of solvent;(b) the number of stages required for a solvent rate equal to 1.5 times minimum; (c) the flow rate and composition of each stream
leaving each stage.
Transcribed Image Text:The tie-line data are:
Raffinate, Weight
Extract, Weight
Fraction Acetone
Fraction Acetone
0.44
0.56
0.29
0.40
0.12
0.18
Transcribed Image Text:Acetone, Weight
Water, Weight
Trichloroethane,
Fraction
Fraction
Weight Fraction
Extract
0.60
0.13
0.27
0.50
0.04
0.46
0.40
0.03
0.57
0.30
0.02
0.68
0.20
0.015
0.785
0.10
0.01
0.89
Raffinate
0.55
0.35
0.10
0.50
0.43
0.07
0.40
0.57
0.03
0.30
0.68
0.02
0.20
0.79
0.01
0. 10
0.895
0.005
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