Calculation of indifferent phase equilibria

A straightforward iterative search for indifferent equilibria is described. It is applied to systems relevant to separation and production processes such as fractional distillation or crystallization and sintering. The respective G functions were taken from literature or obtained with the help of the optimization routine of ChemSage. The calculations for the localization of indifferent phase equilibria were also carried out with ChemSage, however, the new method operates independently of the computer software used.