Environmental Engineering Reference
In-Depth Information
ft
2
1000 lb
m
/
·
hr
lb
m
ft
2
W
G
.
Molar flux of gas
=
29
=
34
hr
=
0
.
02
×
58
+
0
.
98
×
·
Acetone in air
Sc
G
=
1
.
7
.
Solution:
Molecular weight of acetone
=
58
=
Molecular weight of air
29
Molecular weight of water
=
18
ft
2
1400 lb
m
/
·
hr
lb
m
ft
2
W
L
.
Molar liquid flux
=
=
78
hr
=
18
·
Steady-state mass balance
y
in
W
G
=
y
out
W
G
+
x
out
W
L
(0
.
02)(34)
=
(0
.
005)(34)
+
x
out
(78)
10
−
3
x
out
=
6
.
5
×
mW
G
W
L
.
mV
L
1
8(34)
(78)
=
=
=
=
.
.
A
0
79
Both operating and equilibrium lines are linear:
ln
A
y
A
in
−
−
1
mx
A
in
1
A
+
A
y
A
out
−
mx
A
in
A
N
OG
=
−
1
A
=
1
.
5
mV
L
H
OG
=
H
G
+
H
L
W
L
µ
d
1400
12
0
.
28
(
Sc
L
)
0
.
5
(915)
0
.
5
H
L
=
a
L
=
0
.
0059
=
0
.
7 ft.
a
G
W
G
Sc
0
.
v
W
L
H
G
=
7)
0
.
5
(1400)
0
.
24
97(1000)
0
.
36
(1
=
1
.
.
=
0
.
5ft
.
mV
L
H
OG
=
H
G
+
H
L
=
0
.
5
+
0
.
79(0
.
7)
=
1
.
05 ft.
Column height,
z
=
H
OG
N
OG
=
(1
.
05 ft)(1
.
5)
=
1
.
6ft
.
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