This digital experiment feeds a heated binary liquid into a flash drum at lower pressure. Some of the liquid vaporizes and the rest leaves as a liquid at lower temperature than the feed. Select the mixture and the flash drum pressure. Select the mole fraction of the feed and the feed temperature, and then fill the tank with the feed liquid. Turn on the feed pump, allow the system to reach steady state, then measure the mole fraction of the liquid outlet. Repeat these measurements for a number of feed temperatures and mole fractions and generate a T-x-y diagram.

This digital experiment was created in the Department of Chemical and Biological Engineering, at University of Colorado Boulder for LearnChemE.com by Neil Hendren under the direction of Professor John L. Falconer and Michelle Medlin. It is based on a simulation prepared by Derek Machalek, Rachel Baumann, and Neil Hendren. This digital experiment was prepared with financial support from the National Science Foundation (DUE 2336987 and 2336988) in collaboration with Washington State University. Address any questions or comments to LearnChemE@gmail.com. Our simulations are open source and available on our GitHub.