Peculiarities of pseudobinary equilibrium-curves in the study of rectification kinetics of multicomponent mixtures

Conclusions

• 1. The pseudobinary equilibrium curves of multicomponent mixtures obtained by experimental distillation can not be used for an accurate determination of equilibrium concentrations of components in liquid from known concentrations in vapor.

• 2. The equilibrium concentrations in liquid so found are shifted with respect to their actual values with known regularity.

• 3. The given regularity of shift explains the facts of satisfactory decomposition of the overall mass transfer coefficient into mass transfer coefficients in the case of rectification of multicomponent mixtures [1,2].

• 4. It may be considered that the values of the mass transfer coefficients in the vapor phase found by the method of [3] for rectification of multicomponent mixtures are reliable to the same extent as in the case of binary mixtures.

• 5. On the other hand, the found values of mass transfer coefficients in the liquid phase are known to be inexact. Therefore, they may be considered suitable only for evaluating the order of magnitude.