Zur diskontinuierlichen Rektifikation azeotroper Gemische mit Hilfsstoffeinsatz

Feasible separations and entrainer selection rules for heteroazeotropic batch distillation

“…Koehler et al (1995) presented two separation strategies A and B for the rectifier column, which were analysed in more detail by Skouras et al (2005). Both strategies can be realised in the open or closed rectifier.…”

“…Thus, mode II is governed by special laws and is a more flexible process than mode I of heteroazeotropic distillation and homoazeotropic distillation, as was shown by the simulation results. We also analysed different separation strategies, "strategy A" and "strategy B", for mode II of the process that were first mentioned by Koehler et al (1995). The studies in entrainer selection for heteroazeotropic batch distillation are limited, but valuable insight can be gained by the related literature for continuous columns.…”

Analysis and control of heteroazeotropic batch distillation

“…The system was revisited by Rodriguez et al15, 16 who criticized the analysis from Duessel and Stichlmair8 and pointed out that synthesis methods for homogeneous mixtures cannot be extended to heterogeneous ones without caution. Koehler et al17 showed experimental results for the separation of an azeotropic mixture of water and a high‐boiling component using a light heterogeneous entrainer, but did not specify the actual components used. They showed that the process behaves differently from homoazeotropic batch distillation and that the still path could cross the distillation boundary.…”

Separation of n-hexane–ethyl acetate mixtures by azeotropic batch distillation with heterogeneous entrainers

“…Hence, we have established a complete set of rules for the selection of feasible entrainers for the separation of non ideal mixtures by homogeneous azeotropic batch distillation [1]. In contrast to batch homogeneous distillation processes, studies on heterogeneous batch distillation were scarce [2][3][4] until a new method for the synthesis of heterogeneous distillation in a batch rectifier was defined and a complete set of rules for the selection of heterogeneous entrainers for the separation of non-ideal mixtures was established [5,6].…”