Hysys depressurisation utility for supercritical fluid

[amit_kt1973]

The case is related to a mixture of hydrocarbons (74% methane) having critical temperature =-26 C and critical pressure= 93 barg. The cold depressurisation starts at 205 BARG and 5 C. The start condition is above critical pressure/temperature and HYSYS shows phase fraction= 1, i.e liquid. Any body has experience. Please provide guidelines in using HYSYS for such case.

[eng]

Go to themodynamic package in HYSYS, select phase behavior as VO model instead of Default. This will help.