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2015
Presentation
Titel
Online and non-invasive investigation of bubble columns with electrical resistance tomography (ERT)
Titel Supplements
Presentation held at ACHEMA 2015, Frankfurt, 15.-19.6.2015
Abstract
Bubble columns are widely used in industrial applications because of their simple construction, the absence of mechanically moving parts inside and good heat and mass transfer. However, the characterization of multi-phase flows and hydrodynamics presents a great challenge. Common characteristics can hardly be found due to different material properties e.g. viscosity, density, surface tension, variable operating conditions and column design. One available and powerful tool to characterize multi-phase flows and hydrodynamics is ERT. Besides being robust and noninvasive, ERT works in opaque media and measures over the whole volume of interest. ERT detects changes in conductivity correlating with concentration, mixing index, movement and velocity. With the help of these parameters bubble size, reactive interface and oxygen transmission rate (OTR) can be calculated.
Author(s)