Krushnatej Thiruvalluvan Sujatha

Experimental study of bubble cutting in micro-structured bubble columns

Introduction

Bubble column reactors are widely used in the industry for a plethora of chemical processes involving gas-liquid processing, but they have some disadvantages such as bubble coalescence, low gas-liquid mass transfer and liquid back-mixing. To overcome the problems of conventional bubble columns, we propose a novel reactor with structuring in the form of wire meshes, called as a micro-structured bubble column (MSBC).

Advantages of MSBC reactor

  • Reduced axial mixing because of horizontally aligned wire meshes
  • Higher interfacial area as a consequence of bubble cutting due to the wire mesh

Experimental approach

The present work aims at experimentally investigating the hydrodynamics, mass transfer and chemical reaction to demonstrate the proof of principle concept of a micro-structured bubble column reactor.

Fig. 1a gives a schematic picture of bubble cutting in a micro-structured bubble column reactor. The influence of mesh opening, pitch and wire diameter (shown in Fig. 1b) on hydrodynamics and bubble cutting will also be investigated experimentally using different methods.

Particle Image Velocimetry

Laser Doppler Anemometry

Acknowledgements

  • We acknowledge the financial support from European Research Council (ERC) grant StG 259521.