x - Gmehling

Die ersten Schritte der Relaxationsmethode
(Synthesegaserzeugung T =1100 K, P = 40 atm)
CH 4 + H 2 O CO + 3 H K
2
1 = 301 atm 2
CO + H 2 O CO 2 + H K
2
2 = 0.94
Anfangsmolmengen :
n = 1mol n = 1− ∆ n n = ∆n
CH ,0
CH CO
4 4
n = 3.2 mol n = 3.2 − ∆ n n = 3∆n
H O,0
H O H
2 2 2
∑
n
i
= 4.2 + 2∆n
3
∆ ( ∆ )
( − ∆ )( − ∆ )( + ∆ )
3 3 2 3 2 2
CO H2 CO H2 CO H2
2 2
CH4 H2O CH4 H2O
CH H O ( ∑ i )
4 2
p p y y P n n P n 3 n P
301= = = =
p p y y n n n 1 n 3.2 n 4.2 2 n
3 2
∆n( 3∆n)
P
( 1− ∆n)( 3.2 − ∆ n)( 4.2 + 2∆n)
⎛
⎞
F = 301− = 0 → ∆ n = 0.65606
⎜
2
⎟
⎝
⎠
2
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