Journal
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
Volume 49, Issue 4, Pages 358-366Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cep.2010.03.009
Keywords
Capillary microreactor; Liquid-liquid slug flow; Extraction; Mass transfer; Interfacial area
Categories
Funding
- German Research Funding Organization (Deutsche Forschungsgesellschaft, DFG) [0611011105/095]
Ask authors/readers for more resources
Liquid-liquid biphasic reactions play an important role in the chemical and pharmaceutical Industries The liquid-liquid slug flow capillary microreactor offers considerable potential benefits over the conventional liquid-liquid contactors Though the hydrodynamics and mass transfer have been investigated for this reactor concept, so fat the effective interfacial area available for mass transfer has not been experimentally quantified Despite the well-defined flow patterns arising in the capillary microreactor, the wetting behaviour of the liquids at the capillary wall is inadequately integrated into the models and thus, the true Interfacial area being used for mass transfer is uncertain In the present work, experiments were carried out to determine the mass transfer rates and effective interfacial area using physical and chemical methods The effective interfacial areas measured by physical and chemical methods were compared and it confirms the presence of the previously conjectured organic wall film. which provides a much higher Interfacial area including both. the ends and sides of the non-wetting slugs Overall volumetric mass transfer coefficients were obtained by physical extraction and compared to the chemical method The organic wall film is visualised by a light induced fluorescence method, which shows the organic phase completely coveting the hydrophobic capillary wall. indicating that the effective interfacial at ea lot mass transfer in this reactor concept can significantly differ from the physical Interfacial area (C) 2010 Elsevier B V All rights reserved
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available