Effect of Suspension Pattern of Sedimentary Particles on Solid/Liquid Mass Transfer in a Mechanically Stirred Vessel

Yuichiro Tokura, Azhar Uddin, Yoshiei Katou

Research output: Contribution to journalArticle

Abstract

The solid/liquid mass transfer rate of particles stagnation on vessel bottom and partial suspension in liquid was insufficiently known compared with that of completely suspended condition. In this study, the effect of suspension regime of sedimentary particles on the solid/liquid mass transfer rate in a mechanically stirred vessel without baffles was investigated. The solid/liquid mass transfer rate increased slightly with the increasing rotation speed at the stagnation regime; its rapid enhancement was found at the partially suspended regime, and the increasing rate became slow again at the complete suspension. Nondimensional equations for solid/liquid mass transfer rate of stagnation and completely suspended conditions were obtained with a good correlation. On the other hand, the suspended particle ratio under the partial suspension condition was estimated by the mass transfer rate of stagnation and completely suspended regimes and followed an S curve against the normalized rotation speed.

Original languageEnglish
JournalIndustrial and Engineering Chemistry Research
DOIs
Publication statusPublished - Jan 1 2019

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Suspensions
Mass transfer
Liquids

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

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title = "Effect of Suspension Pattern of Sedimentary Particles on Solid/Liquid Mass Transfer in a Mechanically Stirred Vessel",
abstract = "The solid/liquid mass transfer rate of particles stagnation on vessel bottom and partial suspension in liquid was insufficiently known compared with that of completely suspended condition. In this study, the effect of suspension regime of sedimentary particles on the solid/liquid mass transfer rate in a mechanically stirred vessel without baffles was investigated. The solid/liquid mass transfer rate increased slightly with the increasing rotation speed at the stagnation regime; its rapid enhancement was found at the partially suspended regime, and the increasing rate became slow again at the complete suspension. Nondimensional equations for solid/liquid mass transfer rate of stagnation and completely suspended conditions were obtained with a good correlation. On the other hand, the suspended particle ratio under the partial suspension condition was estimated by the mass transfer rate of stagnation and completely suspended regimes and followed an S curve against the normalized rotation speed.",
author = "Yuichiro Tokura and Azhar Uddin and Yoshiei Katou",
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AU - Katou, Yoshiei

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AB - The solid/liquid mass transfer rate of particles stagnation on vessel bottom and partial suspension in liquid was insufficiently known compared with that of completely suspended condition. In this study, the effect of suspension regime of sedimentary particles on the solid/liquid mass transfer rate in a mechanically stirred vessel without baffles was investigated. The solid/liquid mass transfer rate increased slightly with the increasing rotation speed at the stagnation regime; its rapid enhancement was found at the partially suspended regime, and the increasing rate became slow again at the complete suspension. Nondimensional equations for solid/liquid mass transfer rate of stagnation and completely suspended conditions were obtained with a good correlation. On the other hand, the suspended particle ratio under the partial suspension condition was estimated by the mass transfer rate of stagnation and completely suspended regimes and followed an S curve against the normalized rotation speed.

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