An easy way to quickly program an algorithm to find all of the feasible residue curve maps for three-component systems is described here. A residue curve tracks the liquid composition within a boiling flash.
John Ogilvie
Maplesoft
Prof. Godfrey Beddard
Scott Kaiser
Samir Khan
Teffanie Goh
Sarah Moe
Claire Jones
While there is a good chance this app will work fine, note that it was created in Maple V and may not work correctly in more recent versions.