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Fluid Mechanics and Transport Phenomena
The intensification of rapid reactions for multiphase systems in a microchannel reactor by packing microparticles
Article first published online: 20 JUL 2010
DOI: 10.1002/aic.12367
Copyright © 2010 American Institute of Chemical Engineers (AIChE)
Additional Information
How to Cite
Su, Y., Zhao, Y., Jiao, F., Chen, G. and Yuan, Q. (2011), The intensification of rapid reactions for multiphase systems in a microchannel reactor by packing microparticles. AIChE J., 57: 1409–1418. doi: 10.1002/aic.12367
Publication History
- Issue published online: 5 MAY 2011
- Article first published online: 20 JUL 2010
- Accepted manuscript online: 20 JUL 2010 12:00AM EST
- Manuscript Revised: 30 JUN 2010
- Manuscript Received: 10 JAN 2010
Funded by
- National Natural Science Foundation of China. Grant Numbers: 20906087, 20911130358
- Ministry of Science and Technology of China. Grant Numbers: 2007AA030206, 2009CB219903
- Fund of Dalian Institute of Chemical Physics, CAS. Grant Number: K2009D01
- Abstract
- Article
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- Cited By
Keywords:
- microchannel;
- mass transfer;
- nitration;
- packed bed;
- multiphase flow;
- dispersion
Abstract
In this study, the nitration of o-nitrotoluene (NT) with mixed acid as a model fast liquid–liquid multiphase reaction was conducted in the packed and nonpacked microchannel reactors. Better reaction performance could be obtained in the packed microchannel reactor compared with the nonpacked microchannel reactor because of its excellent mass transfer performance. The conversion of NT reached 94% in the packed microchannel reactor even when the reaction time was less than 3 s. A parameter, which represented the coupling of mass transfer and residence time in microdevices, was proposed for explaining and anticipating nitration process in microchannel reactors. In addition, the effects of some operating parameters on reaction performance, such as the composition of mixed acid and reaction temperature, were also investigated experimentally. © 2010 American Institute of Chemical Engineers AIChE J, 2011