1. Countercurrent multistage extraction. Pure methylisobutyl ketone (MIK) of 200kg/h is used to extract an aqueous solution of 120kg/h 40 wt% acetone by countercurrent multistage extraction. The exit acetone concentration in the aqueous phase is 5 wt %. (a) Using the equilibrium data in the table A.3-25, draw a liquid-liquid phase diagram (including tie lines) for acetone (A), water (B), methyl isobutyl ketone (MIK) (C) on a right triangle. (Hint: Plotting the "Composition Data", you can get the boundary between 1 phase region and 2 phase region. Connecting the water phase and MIK phase compositions in "Acetone Distribution Data", you get the tie lines. Both the water phase and MIK phase should be located on the phase boundary.) (b) Calculate the flow rate and composition of the mixing point M (c) Calculate the flow rates and compositions of LN (exiting raffinate) and V1 (exiting extract). (d) Calculate the number of stages required. (e) Using the "Acetone Distribution Data", Cnsfer the equilibrium information on the right triangle coordinate to a cartesian coordinate (x-y) Liquid-Liquid Equilibrium Data for Acetone -Water-Methyl Isobutyl Ketone (MIK) System at 298-299 K or 25- 26°C A.3-25 Composition Data (wt %) Acetone Distribution Data (wi %) MIK Acetone Water Water Phase MIK Phase O 98.0 2.00 2.5 4.5 93.2 4.6 2.33 5.5 10.0 77.3 18.95 3.86 7.5 13.5 4.66 17.5 71.0 24.4 10.0 21.3 5.53 12.5 28.9 65.5 25.5 15.5 7.82 37.6 54.7 28.2 17.5 10.7 43.2 46.2 31.2 20.0 45.0 42.7 12.4 34.0 22.5 64.2 30.9 5.01 36.5 25.0 75.8 20.9 3.23 37.5 26.0 94.2 3.73 2.12 97.8 2.20 E Othmer. R. E. White, and E. Trueger. Ind. Eng Source: Reprinted with permission from Chem, 33, 1240 (1941). Copyright by the American Chemical Society Physical Properties of Inorganic and Organic Compounds Appendix A.3

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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1. Countercurrent multistage extraction.
Pure methylisobutyl ketone (MIK) of 200kg/h is used to extract an aqueous solution of 120kg/h
40 wt% acetone by countercurrent multistage extraction. The exit acetone concentration in the
aqueous phase is 5 wt %.
(a) Using the equilibrium data in the table A.3-25, draw a liquid-liquid phase diagram (including
tie lines) for acetone (A), water (B), methyl isobutyl ketone (MIK) (C) on a right triangle.
(Hint: Plotting the "Composition Data", you can get the boundary between 1 phase region and 2
phase region. Connecting the water phase and MIK phase compositions in "Acetone
Distribution Data", you get the tie lines. Both the water phase and MIK phase should be located
on the phase boundary.)
(b) Calculate the flow rate and composition of the mixing point M
(c) Calculate the flow rates and compositions of LN (exiting raffinate) and V1 (exiting extract).
(d) Calculate the number of stages required.
(e) Using the "Acetone Distribution Data", Cnsfer the equilibrium information on the right
triangle coordinate to a cartesian coordinate (x-y)
Liquid-Liquid Equilibrium Data for
Acetone -Water-Methyl Isobutyl Ketone (MIK)
System at 298-299 K or 25- 26°C
A.3-25
Composition Data
(wt %)
Acetone Distribution Data
(wi %)
MIK
Acetone
Water
Water Phase
MIK Phase
O
98.0
2.00
2.5
4.5
93.2
4.6
2.33
5.5
10.0
77.3
18.95
3.86
7.5
13.5
4.66
17.5
71.0
24.4
10.0
21.3
5.53
12.5
28.9
65.5
25.5
15.5
7.82
37.6
54.7
28.2
17.5
10.7
43.2
46.2
31.2
20.0
45.0
42.7
12.4
34.0
22.5
64.2
30.9
5.01
36.5
25.0
75.8
20.9
3.23
37.5
26.0
94.2
3.73
2.12
97.8
2.20
E Othmer. R. E. White, and E. Trueger. Ind. Eng
Source: Reprinted with permission from
Chem, 33, 1240 (1941). Copyright by the American Chemical Society
Physical Properties of Inorganic and Organic Compounds
Appendix A.3
Transcribed Image Text:1. Countercurrent multistage extraction. Pure methylisobutyl ketone (MIK) of 200kg/h is used to extract an aqueous solution of 120kg/h 40 wt% acetone by countercurrent multistage extraction. The exit acetone concentration in the aqueous phase is 5 wt %. (a) Using the equilibrium data in the table A.3-25, draw a liquid-liquid phase diagram (including tie lines) for acetone (A), water (B), methyl isobutyl ketone (MIK) (C) on a right triangle. (Hint: Plotting the "Composition Data", you can get the boundary between 1 phase region and 2 phase region. Connecting the water phase and MIK phase compositions in "Acetone Distribution Data", you get the tie lines. Both the water phase and MIK phase should be located on the phase boundary.) (b) Calculate the flow rate and composition of the mixing point M (c) Calculate the flow rates and compositions of LN (exiting raffinate) and V1 (exiting extract). (d) Calculate the number of stages required. (e) Using the "Acetone Distribution Data", Cnsfer the equilibrium information on the right triangle coordinate to a cartesian coordinate (x-y) Liquid-Liquid Equilibrium Data for Acetone -Water-Methyl Isobutyl Ketone (MIK) System at 298-299 K or 25- 26°C A.3-25 Composition Data (wt %) Acetone Distribution Data (wi %) MIK Acetone Water Water Phase MIK Phase O 98.0 2.00 2.5 4.5 93.2 4.6 2.33 5.5 10.0 77.3 18.95 3.86 7.5 13.5 4.66 17.5 71.0 24.4 10.0 21.3 5.53 12.5 28.9 65.5 25.5 15.5 7.82 37.6 54.7 28.2 17.5 10.7 43.2 46.2 31.2 20.0 45.0 42.7 12.4 34.0 22.5 64.2 30.9 5.01 36.5 25.0 75.8 20.9 3.23 37.5 26.0 94.2 3.73 2.12 97.8 2.20 E Othmer. R. E. White, and E. Trueger. Ind. Eng Source: Reprinted with permission from Chem, 33, 1240 (1941). Copyright by the American Chemical Society Physical Properties of Inorganic and Organic Compounds Appendix A.3
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