Process Dynamics And Control, 4e
16th Edition
ISBN: 9781119385561
Author: Seborg, Dale E.
Publisher: WILEY
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Textbook Question
Chapter 3, Problem 3.8E
For the integro-differential equation,
a. Find
b. What is the limiting value of t and
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Ternary Phase Diagram+ Material balance
Feed mixture weighing 200 kg of unknown composition containing water, acetic acid, isopropyl ether is
contacted in a single stage with 280kg mixture containing 40wt% acetic acid. 10wt% water and 50wt% isopropyl
ether. The resulting raffinate layer weight 320 kg and containing 29.5 wt% acetic acid, 66.5 wt% water and 4wt%
isopropyl ether. Determine the composition of the original feed mixture and the extract layer
Water layer
Isopropyl ether layer
acetic acid
0
water
98.8
Isopropyl ether
1.2
acetic acid
0
water
Isopropyl ether
0.6
99.4
0.69
98.1
1.2
0.18
0.5
99.3
1.41
97.1
1.5
0.37
0.7
98.9
2.89
95.5
1.6
0.79
0.8
98.4
6.42
91.7
1.9
1.93
1
97.1
13.3
84.4
2.3
4.82
1.9
93.3
25.5
71.1
3.4
11.4
3.9
84.7
36.7
58.9
4.4
21.6
6.9
71.5
44.3
5.1
10.6
31.1
10.8
58.5
46.4
37.1
16.5
36.2
15.1
48.7
Graphically+Material balance
2500 kg/hr of (20-80) nicotine water solution is to be extracted with benzene containing 0.5% nicotine in
the 1st and 2nd stages while the 3rd stage is free of nicotine. Cross-current operation is used with different amounts
of solvent for each stages 2000kg/hr in the 1st stage, 2300 kg/hr in the 2nd stage, 2600 kg/hr in the 3rd,
determine:-
a- The final raffinate concentration and % extraction.
b- b-The minimum amount of solvent required for counter-current operation if the minimum concentration
will be reduced to 5% in the outlet raffinate.
Equilibrium data
Wt % Nicotine in water
0
4
16
25
Wt % Nicotine in benzene
0
4
21
30
Chapter 3 Solutions
Process Dynamics And Control, 4e
Ch. 3 - Find the Laplace transforms of the following...Ch. 3 - Prob. 3.2ECh. 3 - Prob. 3.3ECh. 3 - Prob. 3.4ECh. 3 - Prob. 3.5ECh. 3 - Using PFE where required, find X(t) for a....Ch. 3 - Expand each of the following s-domain functions...Ch. 3 - For the integro-differential equation,...Ch. 3 - Prob. 3.9ECh. 3 - Which solutions of the following equations will...
Ch. 3 - Prob. 3.11ECh. 3 - Find the complete time-domain solutions for the...Ch. 3 - Prob. 3.13ECh. 3 - Prob. 3.14ECh. 3 - Prob. 3.15ECh. 3 - Prob. 3.16ECh. 3 - UseLaplace transforms to find the solution to the...Ch. 3 - Prob. 3.18ECh. 3 - Prob. 3.19ECh. 3 - Prob. 3.20ECh. 3 - Prob. 3.21ECh. 3 - Solve this ODE using a Symbolic software program:...
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- Feed mixture weighing 200 kg of unknown composition containing water, acetic acid, isopropyl ether is contacted in a single stage with 280kg mixture containing 40wt% acetic acid. 10wt% water and 50wt% isopropyl ether. The resulting raffinate layer weight 320 kg and containing 29.5wt% acetic acid, 66.5 wt% water and 4wt% isopropyl ether. Determine the composition of the original feed mixture and the extract layer Water layer Isopropyl ether layer acetic acid water Isopropyl ether acetic acid water Isopropyl ether 0 98.8 1.2 0 0.6 99.4 0.69 98.1 1.2 0.18 0.5 99.3 1.41 97.1 1.5 0.37 0.7 98.9 2.89 95.5 1.6 0.79 0.8 98.4 6.42 91.7 1.9 1.93 1 97.1 13.3 84.4 2.3 4.82 1.9 93.3 25.5 71.1 3.4 11.4 3.9 84.7 36.7 58.9 4.4 21.6 6.9 71.5 44.3 5.1 10.6 31.1 10.8 58.5 46.4 37.1 16.5 36.2 15.1 48.7arrow_forward2000 Kg/hr on an acetone water mixture containing 10% of acetone is to be extracted with trichloroethane. The recovered solvent to be used is free of acetone. If 95% recovery of acetone is desired, the equilibrium relationship is given by kg acetone/kg trichloroethane 1.65 kg acetone/kg water. Estimate the number of stages required if 1.5 times the minimum solvent is used when: - a- Cross-current is to be extracted. b- b- Counter-current is to be extracted.arrow_forward2/1000kg/h of an acetone - water mixture containing 20wt% by weight of acetone is to be counter currently extracted with trichloroethane. The recovered solvent to be used is free from acetone. The water and trichloroethane are insoluble. If 90% recovery of acetone is desired estimate the number of stages required if 1.5 times the minimum solvent is used. The kg acetone/kg extract=1.65 kg water/kg raffinate. a- Repeat the calculation of A if the solvent used has purity of 98.5%. b- If co-current extractor is used instead of counter-current extractor in A and B estimate the number of stages required if equal amount of solvent used in each stage.arrow_forward
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