A. Mehlhorn et al., USING RATE-BASED APPROACH UNDER CONSIDERATION OF DIFFERENT CONTACTINGREGIMES FOR MULTICOMPONENT BATCH DISTILLATION SIMULATION, Computers & chemical engineering, 22, 1998, pp. 645-648
Distillation, as well as the other separation processes absorption and
extraction, is governed by mass transfer at the interface between one
phase and another. In general this mass transfer is experimentally st
udied, because of the unknown geometry of the liquid vapour interface.
There have been entirely theoretic solutions to the calculation of ma
ss transfer for distillation, assuming that transfer interactions only
take place within bubbles. However, the restriction to consider an in
terface only made up of bubbles is not valid for the entire operation
range of distillation trays, because at the upper end of the operation
range of a distillation tray a substantial amount of tray holes are j
etting instead of bubbling. Therefore this paper presents an enlarged
model taking into account three different vapour phases, small bubblin
g, large bubbling and vapour jets. (C) 1998 Elsevier Science Ltd. All
rights reserved.