Short Glossary

Attraction region: (Reg _att) region of concentration simplex in which the section trajectories at given reflux or reboil ratio come to node product point.
Bond between two stationary points: distillation line (c-line at infinite reflux) that comes from the point with less boiling temperature to the point with greater boiling temperature. There should not be any other stationary points between these two points. Chain of bonds consists of several unidirectional bonds.
Bundle of section trajectories: ( or or ) full set of section trajectories that start from the same point (unstable node) and end in the same point (stable node).
Component order region: ( ) region of concentration simplex in which points component volatilities are in the same order ( K _i> K _j> K _k).
Condition for reversible distillation product points: points x _D, x _B, x _F, and y _F are located on straight line.
Distillation region at infinite reflux: (Reg ^?) region of concentration simplex filled with one bundle of distillation lines (residue curves) at infinite reflux ( ).
Distillation subregion: (Reg _sub) part of distillation region contains one bond chain and all feed components N ^? ? S ¹ ? ? N ⁺.
Joining condition at minimum reflux for split with distributed component: feed cross-section composition point for one column s section must belong to the sep aratrix min-reflux region and...

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Distillation Theory and its Application to Optimal Design of Separation Units