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, A., Carletti, C., Montante, G. (2017). Liquid Mixing Time in Dense Solid-Liquid Stirred Tanks. CHEMICAL ENGINEERING & TECHNOLOGY, 40(5), 862-869 [10.1002/ceat.201600595].
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.