Hydrodynamics and liquid phase residence time distribution in mesh microreactor

TitleHydrodynamics and liquid phase residence time distribution in mesh microreactor
Publication TypeJournal Article
Year of Publication2007
AuthorsKulkarni, AA, Gorasia, AK, Ranade, VV
JournalChemical Engineering Science
Volume62
Issue24
Pagination7484-7493
Date PublishedDEC
Type of ArticleArticle
ISSN0009-2509
Keywordshydrodynamics, hysteresis, image analysis, microreactor, residence time distribution
Abstract

This paper is focused on the experimental analysis of residence time distribution and phase hold-up in a mesh microreactor. A microreactor, where a finely weaved mesh is sandwiched between two flat plates with specific inlets for gas and liquid, is proposed. The microvolumes formed upon sandwiching the mesh are totally connected and thus it yields a view of several interconnected microvolumes. This system is easy to build and does not need precision micromachining. A high-speed photographic analysis yielded the phase distribution for different mesh types over a wide range of operating gas and liquid flow rates. The RTD was studied by measuring the liquid phase conductivity at the outlet of the reactor. Channeling prevailed for mesh with smaller open area. The ADEM was used for fitting the tracer curves with tailing ends. The RTD and the image analysis for all the mesh types showed hysteresis when the gas flow rate was maintained constant and the liquid flow rate was gradually increased and then decreased. (c) 2007 Elsevier Ltd. All rights reserved.

DOI10.1016/j.ces.2007.08.063
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

2.75

Divison category: 
Chemical Engineering & Process Development