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International Society for Industrial Process Tomography

8th World Congress on Industrial Process Tomography

Characterization of a chemical reaction in a bubble column using wire-mesh sensor and ultrafast X-ray CT

R. Kipping1, E. Schleicher2, H. Kryk2, U. Hampel1,2

1AREVA Endowed Chair of Imaging Techniques in Energy and Process Engineering, Technische Universit├Ąt Dresden, 01062 Dresden, Germany

2Institute of Fluid Dynamics, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstr. 400, 01328 Dresden, Germany

*Corresponding author: ragna.kipping@tu-dresden.de

ABSTRACT

This article presents the combined application of wire-mesh sensor (WMS) and ultrafast X-ray computed tomography (CT) to study the mass transfer and conversion of ionic species during the chemical absorption of CO2 into NaOH. Ultrafast x-ray CT was used to determine the decrease of gas fraction caused by the mass transfer of CO2 into the liquid phase. The following formation of the different ionic species during the reaction of dissolved CO2 was measured using wire-mesh sensor technique. With this combination, a description of the chemical absorption of CO2 even in a dense bubbly flow is possible and thus a better understanding of coupled mechanisms of hydrodynamics, mass transfer and chemical reaction can be achieved.

Keywords wire-mesh sensor, ultrafast X-ray tomography, two-phase flow, chemical absorption

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