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In-Depth Information
Figure 6.4
Aspen Plus plot wizard.
TABLE 6.3 Vapor-Liquid Equilibrium
Cyclohexane (1)-Isopropyl Alcohol (2)
Temperature
Pressure
(
◦
C)
(mmHg)
x
1
y
1
80.29
760
0.021
0.093
78.1
760
0.047
0.18
78.85
760
0.091
0.279
73.8
760
0.147
0.373
72.13
760
0.217
0.442
70.88
760
0.279
0.481
70.13
760
0.373
0.519
69.99
760
0.478
0.561
69.56
760
0.602
0.597
69.79
760
0.748
0.649
70.99
760
0.882
0.704
74.61
760
0.972
0.815
then either
A
12
=
a
12
or
A
12
=
b
12
/T
when two parameters are used. Then for constant
A
12
, an initial estimate for
b
12
=
a
12
T
and similarly for
b
21
. For this example,
b
12
=
1
.
57
(
273
.
1
+
80
.
3
)
=
530
.
1
b
21
=
2
.
25
(
273
.
1
+
74
.
6
)
=
782
.
3
