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Application of a Wire-Mesh Sensor for theￂ Study of Chemical Species Conversion inￂ aￂ Bubble Column
Ist Teil von
Chemical engineering & technology, 2017-08, Vol.40 (8), p.1425
Ort / Verlag
Frankfurt: Wiley Subscription Services, Inc
Erscheinungsjahr
2017
Link zum Volltext
Quelle
Wiley Blackwell Single Titles
Beschreibungen/Notizen
The utilization of a wire-mesh sensor for the measurement of chemical species conversion during the chemical adsorption of carbon dioxide in sodium hydroxide solution is reported for the first time. The wire-mesh sensor obtains cross-sectional images of the liquid-phase conductivity, which changes with the consumption of hydroxide during the reaction. A theoretical model was applied to verify the use of conductivity as an indicator for the reaction progress. Experiments were carried out using a lab-scale bubble column reactor with two wire-mesh sensors at different reactor heights. The results obtained from the reactor model and experiments showed very good agreement and demonstrate the potential of this imaging instrument to follow the course of a chemical reaction via ionic species concentration even in a dense bubbly flow. This way, a better understanding of the coupling of hydrodynamics, mass transfer, and reaction in bubble columns and other reaction devices can be achieved.