Page 242 - Process Equipment and Plant Design Principles and Practices by Subhabrata Ray Gargi Das

242 Chapter 9 Phase equilibria

(A) Min boiling Max boiling (D)
No azeotrope azeotrope azeotrope
T = Constant
P = constant P = constant P = constant
V V+L V V L
V+L
T L T T V+L
L L P
V+L
0.0 0.5 1.0 0.0 0.5 1.0 0.0 0.5 1.0 V
x, y x, y x, y
0.0 0.5 1.0
(B) x, y

P = Constant
(E)
P = Constant
V
y x = y L+V A Tie line

L
V
T

0.0 0.5 1.0 L
x

x, y
(C) 1
0.8 V
0.6 λ a
y 0.4 V+L
0.2
0 A H V
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 L
x
250 Enthalpy (H V , H L )
200 Tie line λ b
150
Y 100 H L
50
0
0 102030405060708090 100
X x, y
FIGURE 9.1
Cont’d