Article thumbnail
Location of Repository

In-situ measurement of particle size distribution in an agitated vessel

By Bohuš Kysela

Abstract

Agitation of solid-liquid suspension or two immiscible liquids is a frequent operation in chemical and metallurgical industries (suspension/emulsion polymerization, catalytic chemical reaction, hydrometallurgical solvent extraction). The product quality, yield and economy of the processes are significantly affected by a mixing process. Prediction of mean particle/drop size and particle/drop size distribution (PSD) during the agitation is fundamental for emulsification, suspension polymerization, solid particle dispersion or crystallization. \nThe aim of this contribution is to propose a simple method of in-situ measurement of particle size distribution. The particle size measurement is based on an image analysis performed on raw image records. Evaluation method based on the best focused particles with sharp detected boundaries enhanced by the analysis of particle circularity was developed. Precise spherical mono-disperse steel and plastic particles were used to verify accuracy of evaluation method. The method has been proposed for the measurement of the time evolution of the drop size distribution in liquid-liquid dispersion in an agitated tank. The effect of droplet size distribution on the impeller speed in wateroil dispersion in agitated vessel was obtained

Topics: particles; droplets; agitated vessel; image analysis; PSD
Year: 2017
OAI identifier: oai:invenio.nusl.cz:371058
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://www.nusl.cz/ntk/nusl-37... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.