The name is absent



Figure 2.12: (a) Liquid-liquid equilibrium of PE-n-pentane at T = 460 K. Comparison
of the predictions from the new equation of state (solid line, kʊ = 0.01) and PC-SAFT
(dashed line) with experimental data from Kiran et al. [93] (PE: Mw = 121 kg∕mol, Mw/
Mn = 4.32). PE was modeled using 10 pseudocomponents (refer table 2.4) (b) Liquid-
liquid equilibrium of PE-n-hexane at T = 440 K. Comparison of the predictions from the
new equation of state (solid line, k7j = 0.0086) and PC-SAFT (dashed line, kZj) = 0.0025)
with experimental data from Kennis et al. [95] (PE: Mn = 8 kg∕mol, Mw = 177 kg∕mol,
Mz = 1000 kg∕mol). PE was modeled using 6 pseudocomponents (refer table 2.5).

2.4 Conclusions

A new equation of state is developed, based upon the hard chain equation of state
developed by Ghonasgi and Chapman and by Chang and Sandler. The equation
was applied to pure n-alkanes, as well as mixtures of long and short chain n-alkanes.
For pure components, the critical temperatures and pressures predicted by the new
EOS are closer to the experimental values than those predicted by PC-SAFT. The
new EOS gives better estimates of liquid densities than PC-SAFT for long chain n-
alkanes (C24 and higher) described with parameters extrapolated from those regressed

60



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