Author:
Bucciarelli Elia,Formánek Roman,Kysela Bohuš,Fořt Ivan,Šulc Radek
Abstract
Agitation of two immiscible liquids or solid-liquid suspension is a frequent operation in chemical and metallurgical industries. Prediction of mean drop/particle size and drop/particle size distribution (DSD) is vital for emulsification, suspension polymerization, solid particle dispersion or crystallization. Simulation of particulate systems requires the knowledge of DSD and its time evolution. The time evolution of drop size distribution was investigated in baffled vessel mechanically agitated by a Rushton turbine and a high-shear tooth impeller. The system water –silicone oil was used as a model liquid. The volume fraction of the dispersed phase was 0.047 %. The drop sizes were determined by image analysis. The time evolution of the drops size dp32 was studied for both impellers tested. The model used involves the first order kinetics. Finally, the following correlations predicted by the Kolmogorov-Hinze theory were evaluated at steady state: dp32/D = C1.We-0.6 and dpmax/D = C2.We-0.6, where We is the impeller Weber number.
Reference8 articles.
1. Determination of mixing time and degree of homogeneity in stirred vessels with large eddy simulation
2. Numerical simulation of macro-mixing in liquid–liquid stirred tanks
3. Time evolution of the drop size distribution for liquid–liquid dispersion in an agitated tank
4. Kysela B., Konfršt J., Chára Z., Šulc R., Ditl P., In-situ measurement of particle size distribution in an agitated vessel. In: Proceedings of 18th International Conference Transport & Sedimentation of solid particles. Prague, Czech Republic, 2017
5. Bowerman B.L., O´Connell R.T., Applied statistics: improving business processes (Richard D. Irwin, USA, 1997)
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