TY - JOUR N2 - Distillation boundaries originate from saddle azeotropes, dividing the composition space into distillation regions. In heterogeneous mixtures distilled in packed columns, distillation regions overlap. The common area of distillation regions is parametrically sensitive, and it determines the possibilities of crossing (at a finite reflux) the distillation boundaries defined for a total reflux or reboil ratio. This work is an extended research of the paper (Królikowski et al., 2011) conducted to scrutinize whether the distillation regions overlapped in heteroazeotropic systems distilled in staged columns. Presented studies were performed by finding such composition points of the products, for which the rectifying profiles of staged columns were ended in different distillation regions. Calculations were executed for the heterogeneous mixture classified under Serafimov's topological class as 3.1-2: ethanol - benzene - water. Distillation regions for staged columns were found to overlap each other in the heterogeneous systems. As a result, their common part was parametrically sensitive. L1 - http://journals.pan.pl/Content/84709/PDF/01-paper.pdf L2 - http://journals.pan.pl/Content/84709 PY - 2012 IS - No 2 June EP - 219 DO - 10.2478/v10176-012-0018-x KW - distillation KW - distillation profiles KW - distillation boundaries KW - staged column KW - heterogeneous mixtures A1 - Królikowski, Andrzej PB - Polish Academy of Sciences Committee of Chemical and Process Engineering DA - 2012 T1 - Distillation profiles in ternary heterogeneous mixtures with distillation boundaries: staged columns SP - 207 UR - http://journals.pan.pl/dlibra/publication/edition/84709 T2 - Chemical and Process Engineering ER -