The knowledge of the spatial solids distribution is important for predicting the performance of various processes carried out in mechanically stirred equipment. In this work, the solid suspension in a stirred tank equipped with PBT and Lightnin A310 impellers is investigated by Electrical Resistance Tomography (ERT). The analysis concerns dense solid-liquid systems, with mass ratio of suspended solid to liquid up to 0.43, with the main goal of obtaining detailed information on the spatial distribution of the dispersed phase and on mixing quality. The shape of the interface between the solid mixture and the clear liquid layer is also determined. The results provide insight into the complex behaviour of dense suspensions and can be adopted as a benchmark for advanced modeling techniques based on CFD methods. Based on the experimental results, a method for the evaluation of the distribution of the solids under different working conditions and geometrical set-up is suggested. This criterion can provide a guideline for scale-up, when equal solid distribution at different scales is required.

Analysis of solid concentration distribution in dense solid–liquid stirred tanks by electrical resistance tomography / Claudio Carletti;Giuseppina Montante;Tapio Westerlund;Alessandro Paglianti. - In: CHEMICAL ENGINEERING SCIENCE. - ISSN 0009-2509. - STAMPA. - 119:(2014), pp. 53-64. [10.1016/j.ces.2014.07.049]

Analysis of solid concentration distribution in dense solid–liquid stirred tanks by electrical resistance tomography

MONTANTE, GIUSEPPINA MARIA ROSA;PAGLIANTI, ALESSANDRO
2014

Abstract

The knowledge of the spatial solids distribution is important for predicting the performance of various processes carried out in mechanically stirred equipment. In this work, the solid suspension in a stirred tank equipped with PBT and Lightnin A310 impellers is investigated by Electrical Resistance Tomography (ERT). The analysis concerns dense solid-liquid systems, with mass ratio of suspended solid to liquid up to 0.43, with the main goal of obtaining detailed information on the spatial distribution of the dispersed phase and on mixing quality. The shape of the interface between the solid mixture and the clear liquid layer is also determined. The results provide insight into the complex behaviour of dense suspensions and can be adopted as a benchmark for advanced modeling techniques based on CFD methods. Based on the experimental results, a method for the evaluation of the distribution of the solids under different working conditions and geometrical set-up is suggested. This criterion can provide a guideline for scale-up, when equal solid distribution at different scales is required.
2014
Analysis of solid concentration distribution in dense solid–liquid stirred tanks by electrical resistance tomography / Claudio Carletti;Giuseppina Montante;Tapio Westerlund;Alessandro Paglianti. - In: CHEMICAL ENGINEERING SCIENCE. - ISSN 0009-2509. - STAMPA. - 119:(2014), pp. 53-64. [10.1016/j.ces.2014.07.049]
Claudio Carletti;Giuseppina Montante;Tapio Westerlund;Alessandro Paglianti
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/430572
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