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Liquid Mixing Time in Dense Solid‐Liquid Stirred Tanks
Author(s) -
Paglianti Alessandro,
Carletti Claudio,
Montante Giuseppina
Publication year - 2017
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201600595
Subject(s) - mixing (physics) , conductivity , materials science , planar laser induced fluorescence , liquid phase , planar , phase (matter) , analytical chemistry (journal) , process engineering , chromatography , fluorescence , laser induced fluorescence , chemistry , engineering , computer science , thermodynamics , optics , physics , computer graphics (images) , organic chemistry , quantum mechanics
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.