Page 443 - Standard Handbook Petroleum Natural Gas Engineering VOLUME2
P. 443
Properties of Hydrocarbon Mixtures 405
p1 ,," 1 c allowable change
In
p'= p" f allowable change
save ~n P"xma.s
In P"', xm'
Flgure 6-27. Pressure adjustment diagram for equilibrium calculations.
where
~~(1- Ki)*
'(kT = -& wF(1- Ki)+ Kf (6-243)
This convergence algorithm is very reliable provided the values of (L/F)"+' are
constrained to be valid by material balance considerations:
0.0 < (L/F)"+' 1. 1.0 (6-25)
The classical bubble point/dew point checks
CK,zi > 1.0 and Zzi/Ki > 1.0 (6-26)
