Results for vapour-liquid separator are showing zero molar flow rates for components in liquid streams
Even though mole fraction of water is close to 1, it's molar flow rate is zero in the liquid stream. I am not able to interpret it. Also there is no change in the mole fraction of water in vapour stream.
It requires correct thermodynamic model for the system to predict correct VLE. Try using Chao-Seader or PR model of thermodynamics.