Determination of minimum speed required for solids suspension in stirred vessels using pressure measurements | Zendy

Selima Y. S. | Zendy; Fangary Y. S. | Zendy; Mahmoud N. A. | Zendy

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Determination of minimum speed required for solids suspension in stirred vessels using pressure measurements

Author(s) -

Selima Y. S.,

Fangary Y. S.,

Mahmoud N. A.

Publication year - 2008

Publication title -

the canadian journal of chemical engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.404

H-Index - 67

eISSN - 1939-019X

pISSN - 0008-4034

DOI - 10.1002/cjce.20037

Subject(s) - impeller , suspension (topology) , work (physics) , mechanics , rotational speed , mixing (physics) , materials science , rotation (mathematics) , diameter ratio , control theory (sociology) , mathematics , analytical chemistry (journal) , thermodynamics , physics , chemistry , chromatography , classical mechanics , computer science , geometry , control (management) , quantum mechanics , artificial intelligence , homotopy , pure mathematics

The minimum speed required for complete suspension ( N js ) is a major parameter for solids suspension in stirred tanks. Micale et al. 7th UK Conference on Mixing (2002) determined N js by using a pressure gauge technique in a model vessel. In the present work N js was measured by the same later technique in a more practical vessel with varying C / T ratio and the impeller direction of rotation. The results were compared to those obtained by Zwietering Chem. Eng. Sci. 8 , 244–253, (1958) correlation. Agreement was found between results from present work and predictions by Zwietering's correlation with maximum difference not exceeding 17%.

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