7. Conclusions

Separation of a non-ideal A-B mixture usually requires the addition of a carrier E to the feed (azeotropic distillation) or continuously (extractive distillation). In order to increase the driving force of the separation, the selectivity of the carrier must be as far away from 1 as possible. It is evaluated by the ratio of the activity coefficients or relative volatilities of A and B at infinite dilution in E, $γ_{A}^{\infty} / γ_{B}^{\infty}$ or preferably $α_{A E}^{\infty} / α_{B E}^{\infty}$ ...

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Bibliography

(1) - MODLA (G.), LANG (P.) - Feasibility of new pressure swing batch distillation methods. - Chem. Eng. Sci., 63(11), p. 2856-2874 (2008).
(2) - DOHERTY (M.F.), MALONE (M.F.) - Conceptual design of distillation systems. - McGraw Hill, New...