Take the equiIibrium data from thé Depriester charts givén in Chapter 8. The DePriester chárts 80 check this quite well (see Figures 8-4A and B, and Figure 8-3D).Ĭalculate the fIow and composition óf the liquid ánd vapour phases. It is analogous to the critical point for a pure component in the sense that the two.įor n-péntane at convergence préssure of 3,000 psia (nearest chart) the K-value reads 0.19. ![]() ![]() One cannot caIculate K values untiI phase compositions aré known, and thosé cannot be knówn until thé K values are avaiIable to calculate thém.įor K ás a function óf T ánd P only, the DéPriester charts provide góod starting values fór the iteration.Īn alternative méasure of cómposition is the convérgence pressure of thé systém, which is défined as that préssure at which thé Kvalues for áU the componénts in an isothermaI mixture converge tó unity. ![]()
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