和同学讨论的结果是 用PRSV
“Peng-Robinson:This model is ideal for VLE calculations as well as calculating
liquid densities for hydrocarbon systems. However, in situations
where highly non-ideal systems are encountered, the use of
Activity Models is recommended.”
"Peng-Robinson-Stryjek-Vera
This is a two-fold modification of the PR equation of state that
extends the application of the original PR method for moderately
non-ideal systems. It provides a better pure component vapour
pressure prediction as well as a more flexible Mixing Rule than
Peng robinson."
以上两段话来自《AspenCOMThermoV7_1-Ref》。 解释的话 ,丙酮 极性大,应该不能算理想体系吧。PRSV 是PR 的进化版。