Test system for the investigation of reactive taylor bubbles

Journal
Chemical engineering & technology  
Volume
40
Issue
8
Start Page
1494
End Page
1501
Citation
Chemical Engineering and Technology 8 (40): 1494-1501 (2017-08-01)
Publisher DOI
10.1002/ceat.201700047
Scopus ID
2-s2.0-85021822445
Publisher
Wiley-VCH Verl.-Ges.
Detailed analysis of reactive multiphase flows is still challenging due to the complex linked transport processes. Until now, there is no reliable and reproducible experimental method for gas-liquid flows, which enables the local measurement of dissolved species concentrations of educts, products, and side products at well-defined and reproducible hydrodynamic conditions. A vertically arranged glass channel is used to capture gas bubbles with well-defined wake structures. The hydrodynamic conditions in the wake can be predicted by dimensionless numbers and adapted for most industrially relevant systems. An experimental apparatus is presented for the investigation of the interdependency between hydrodynamics, mass transfer, and chemical reaction. The applicability of the setup is demonstrated with a chemical test system that shows a strong color shift from colorless to blue when the gas-liquid reaction takes place.
Subjects
Ammonia reaction
Gas-liquid flow
Reactive multiphase flow
Taylor bubble
DDC Class
530: Physik
More Funding Information
The financial support provided by the German Research Foundation within the Priority Program ‘‘Fluidic Interfaces’’, SPP 1506 (SCHL 617/7-2) and the Priority Program ‘‘Reactive Bubbly Flows’’, SPP 1740 (SCHL 617/12-1 and HE 5480/10-1).