A study on blending characteristics of axial flow impellers

• Autorzy: Fort I. , Jirout T.
• Języki publikacji: EN

Abstrakty

EN

This paper presents an analysis of the blending characteristics of axial flow high-speed impellers under a turbulent regime of flow of an agitated low viscosity liquid. The conductivity method is used to determine the time course of blending (homogenisation) of miscible liquids in a pilot plant fully baffled mixing vessel, and a torquemeter is used for measuring the impeller power input in the same system. Four-blade and six-blade pitched blade impellers and three high efficiency axial flow impellers are tested for the given degree of homogeneity (98%). The experimental results and also the results of the authors' previous study, in accordance with the theoretical approach described in the literature, show that there is a universal relationship between the impeller power number and the dimensionless blending time, taking into consideration the impeller-to-vessel diameter ratio, independent of the geometry of the axial flow impeller but dependent on the degree of homogeneity. This relationship is found to be valid on a pilot plant scale under a turbulent flow regime of an agitated liquid.

Słowa kluczowe

EN

axial flow impeller; pitched-blade impeller; turbulent flow; impeller power input; blending time

PL

wirnik osiowy; wirnik tarczowy; przepływ burzliwy

• Wydawca: Komitet Inżynierii Chemicznej i Procesowej Polskiej Akademii Nauk
• Czasopismo: Chemical and Process Engineering
• Rocznik: 2011
• Tom: Vol. 32, nr 4
• Strony: 311--319
• Opis fizyczny: Bibliogr. 11 poz., rys., tab.

Twórcy

autor

Fort I.

autor

Jirout T.

• Czech Technical University in Prague, Faculty of Mechanical Engineering, Department of Process Engineering, Technicka 4, 166 07 Prague 6, Czech Republic

Bibliografia

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