Rotating foam reactors: Mass transfer and reaction rate

R. Tschentscher, T.A. Nijhuis, J. Schaaf, van der, B.F.M. Kuster, J.C. Schouten

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

Three-phase reactor designs based on rotating solid foams are developed for the application in the fine chemical industry. The solid foam is used as catalyst support and stirrer in order to mix the gas and liquid phases and create fine gas bubbles. Gas-liquid mass transfer data are presented for different solid foam stirrer configurations and compared to an optimized Rushton stirrer. Solid foam stirrers were developed in a blade and a block design. Both foam reactor designs work at very low stirring rate. For similar power input, the mass transfer is comparable to a Rushton stirrer. A recipe for the application of alumina catalyst support on aluminium foams was developed. Anodization of aluminium foams leads to a strong increase of the wash coat stability. Interparticle pores in micrometer size range lead to a high mass transfer through the catalyst layer. The foam stirrer designs can easily be used in ordinary three-phase reactors and show a high potential for further optimization of the gas-liquid flow pattern and therefore for increase of the mass transfer. In addition to having a superior mass transfer performance, catalyst filtering can be avoided, since the liquid can simply be drained from the reactor
Original languageEnglish
Title of host publicationProceedings of the 8th World congress of Chemical Engineering (WCCE8), August 23 to 27, 2009, Canada, Montreal
EditorsP.A. Tanguy
Pages1167-1/4
Publication statusPublished - 2009
Eventconference; 8th World Congress of Chemical Engineering -
Duration: 1 Jan 2009 → …

Conference

Conferenceconference; 8th World Congress of Chemical Engineering
Period1/01/09 → …
Other8th World Congress of Chemical Engineering

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