A break‐even analysis of distillation–membrane hybrids

A hybrid distillation–pervaporation system in a single unit for breaking distillation boundaries in multicomponent mixtures

“…Otherwise, it can be used as a final treatment stage. Applications for binary mixtures 7,9,10 and multicomponent mixtures 11,12 can be found in literature, where the effect of the membrane properties and operating variables on the hybrid process performance have been discussed. It has been shown that a retentate stream composed of a mixture of liquid and vapour can reduce the membrane area requirements compared to conventional pervaporation units and membrane savings higher than 40 % can be achieved 13,14 .…”

Detailed modeling of stationary and transient mass transfer across pervaporation membranes

“…Many case studies indicate that the best application of pervaporation is as part of a hy-Ž brid process Moganti et al, 1994;Pettersen and Lien, 1995; . Pressly and Ng, 1998;Bausa and Marquardt, 2000 . Today modeling and numerical simulation of chemical engineering processes is widespread in the process industries. For many processes models are available through simulators like ASPEN PLUS, PROrII, or HYSYS.…”

Process boundary approach to separations synthesis

“…For a given feed, feasible separations can be represented within the composition space using an equipment process boundary beyond which the permeate and retentate compositions cannot be Ž . reached Pressly and Ng, 1998 . The objective of this study is to formulate a framework to consider these process boundaries in designing a separation system.…”