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

Claudio Carletti, Giuseppina Montante, Tapio Westerlund, Alessandro Paglianti

    Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

    50 Citeringar (Scopus)

    Sammanfattning

    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 the 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.
    OriginalspråkOdefinierat/okänt
    Sidor (från-till)53–64
    Antal sidor12
    TidskriftChemical Engineering Science
    Volym119
    DOI
    StatusPublicerad - 2014
    MoE-publikationstypA1 Tidskriftsartikel-refererad

    Nyckelord

    • Mixing
    • Multiphase flow
    • Slurries
    • Stirred tank
    • Suspension
    • Tomography

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