USING RATE-BASED APPROACH UNDER CONSIDERATION OF DIFFERENT CONTACTINGREGIMES FOR MULTICOMPONENT BATCH DISTILLATION SIMULATION

Citation
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
Citations number
16
Categorie Soggetti
Computer Science Interdisciplinary Applications","Engineering, Chemical","Computer Science Interdisciplinary Applications
ISSN journal
00981354
Volume
22
Year of publication
1998
Supplement
S
Pages
645 - 648
Database
ISI
SICI code
0098-1354(1998)22:<645:URAUCO>2.0.ZU;2-0
Abstract
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.