Ind. Eng. Chem. Res. 1996,34,4583-4584
4683
ADDITIONS AND CORRECTIONS Volume 34, Number 9
Estimation of Chemical Equilibria in HighPressure Gaseous Systems by a Modified Redlich-Kwong-Soave Equation of State. Albert0 Bertucco,* Massimiliano Barolo, and Giorgio Soave Pages 3159-3165. An error in the publication process caused light gray lines in all of the figures. The correct figures are presented below. In K, 100
-3.0 T
90
I
60
-4.0
1
-6.0
1
70
60 50
-5'0
40
-7.0
30 100 200 300 400 500 800 700 800 900 P [bar]
Figure 1. Ammonia synthesis: effect of k" on equilibrium conversion. Curve a: ~ N ~ N= H ~ = 0.4; curve b all k i s set to zero.
,
1
-1.7
-1.6
-1.5
1
'
1
'
1
-1.4 -1.3 -1000/T [l/K]
'
-1.2
-1.1
Figure 3. Ammonia synthesis: dependence of calculated Kf on temperature and comparison with thermodynamic values (TRC, 1971) at P = 800 bar.
5
0 100 200 300 400 500 600 700 600 900 P [bar]
6
thermodynamic
i
0 0
1
1 , 1000
I
~
'
I
-
3000
2000 P [bar]
'
,
4000
jy' 70
-
50 i
40
0 100 200 300 400 500 600 700 800 900 P [bar]
Figure 2. Ammonia synthesis: dependence of K, on pressure at (a) 681.15 K and (b) 753.15 K. Experimental data from Nielsen (1968).
0888-588519512634-4583$09.00/0
I
' 1
0
1000
'
1
2000 P [bar]
'
1
1
3000
4000
Figure 4. Ammonia synthesis: prediction of equilibrium conversion up t~ 3500 bar at (a) 673.15 K and (b) 723.15 K. Experimental data from Winchester and Dodge (1956).
0 1995 American Chemical Society
4584 Ind. Eng. Chem. Res., Vol. 34,No. 12, 1995 KP 2.2
,
2.0 1.8
-
1.6 -
++ E
I
1.0
, 60
90
120 150 P [bar]
180
210
Figure 5. Water-gas shift reaction: dependence of K .on pressure at T = 593 K. (n),experimental data from Sorgato and Angelin (1965); (+), calculated by LR; ( x 1, calculated by S92. 1.0
1
S92, 573 K
]a)
= I LR, 523 K
0.0
I
i
0
100
300
400
S92, 573 K
\
0.6 -
200 P [bar]
I
‘Y \
LR, 573 K
0.2 -
-
/ S92, 523 K
0.0
0
100
200
P [bar]
300
400
Figure 6. Methanol synthesis: prediction of Kpas a function of pressure at T = 523 and 573 K (a) HdCO ratio in the feed equal to 5 and (b) stoichiometric HdCO ratio in the feed. IE950821Q
