Calculation of Compositions of the Equilibrium Phases in a Separator

Question

A liquid mixture of the hydrocarbons methane (1) ethane (2) and propane (3) is flashed through a throttle valve into a separator at 10oC and 13.8 bars. What fraction of the feed stream leaves the separator as a liquid and what are the compositions of the equilibrium phases? The overall feed compositions of the mixture are z1=0.1, z2=0.2 and z3=0.7, and the K values of the three components are given as K1=10, K2=1.76 and K3=0.52, respectively.

Summary

This question belongs to thermodynamics and discusses about a liquid mixture of the hydrocarbons methane, ethane and propane.

Total word count: 140