The liquid mixing time in solid-liquid systems is difficult to determine by quantitative and non-intrusive methods, particularly at high solid loadings. Three methods are considered for the post-processing of raw conductivity data collected by electrical resistance tomography (ERT) in a baffled stirred tank. A novel approach is suggested to overcome the limitations of the section-averaged conductivity evaluations and the problems associated with the solids disturbances affecting the local conductivity data. The new approach, which is based on the classic post-processing method devised for the mixing time determination in optically accessible stirred tanks by planar laser-induced fluorescence, is successfully applied to the ERT data collected either under single-phase or two-phase conditions.

Liquid Mixing Time in Dense Solid-Liquid Stirred Tanks

Paglianti, Alessandro;Carletti, Claudio;Montante, Giuseppina
2017

Abstract

The liquid mixing time in solid-liquid systems is difficult to determine by quantitative and non-intrusive methods, particularly at high solid loadings. Three methods are considered for the post-processing of raw conductivity data collected by electrical resistance tomography (ERT) in a baffled stirred tank. A novel approach is suggested to overcome the limitations of the section-averaged conductivity evaluations and the problems associated with the solids disturbances affecting the local conductivity data. The new approach, which is based on the classic post-processing method devised for the mixing time determination in optically accessible stirred tanks by planar laser-induced fluorescence, is successfully applied to the ERT data collected either under single-phase or two-phase conditions.
Paglianti, Alessandro; Carletti, Claudio; Montante, Giuseppina
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11585/620382
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