Add new algorithm of phase envelope calculations for hydrocarbon-water mixtrues

[curiosity-chen]

Is your feature request related to a problem? Please describe. Generally, we treat polar comonet as prue like water in PT phase envelope algorithm for hydrocarbon-water mixtrues ,which is simple and fast, but the method doesn't consider the effect of polar component for such system. Would be nice to have more reasonable method for hydrocarbon-water mixtrues to describe phase behavior in NeqSim.

Describe the solution you'd like A new algorithm in Neqsim.

Describe alternatives you've considered Not relevant

Additional context Some references are available： [1]. Pedersen, K.S., M.L. Michelsen and A.O. Fredheim, Phase equilibrium calculations for unprocessed well streams containing hydrate inhibitors. Fluid Phase Equilibria, 1996. 126(1): p. 13-28. [2]. Lindeloff, N. and M.L. Michelsen, Phase envelope calculations for hydrocarbon-water mixtures. SPE Journal, 2003. 8(03): p. 298-303. [3]. Agger, C.S. and H. Sørensen, Algorithm for Constructing Complete Asphaltene PT and Px Phase Diagrams. Industrial & Engineering Chemistry Research, 2018. 57(1): p. 392-400.

[EvenSol]

Great suggestion. I have created a branch where this can be worked on.

https://github.com/equinor/neqsim/tree/530-add-new-algorithm-of-phase-envelope-calculations-for-hydrocarbon-water-mixtrues

[EvenSol]

https://aiche.onlinelibrary.wiley.com/doi/10.1002/aic.15064