Complete suspension of particles in mechanically agitated vessels

Mechanically agitated gas-liquid reactors

Effect of low off-bottom impeller clearance on the minimum agitation speed for complete suspension of solids in stirred tanks

Development of an unresolved CFD-DEM model for the flow of viscous suspensions and its application to solid-liquid mixing

Mechanically agitated reactors with single and multiple impeller systems are used in the industry for the various three-phase mixing processes such as crystallization, fermentation, and hydrogenation, etc. The paper reviews the experimental work reported in the literature along with different techniques used for the measurement of the specific quantities such as minimum or critical impeller speed for solid suspension. The work critically surveys the literature and makes specific recommendations for the use of appropriate correlations and conditions to be used for the success of such equipment. This assessment will put all the relevant literature on a common footing and will help to validate work reported earlier.

Dilip K. Guha

Papers

Suspension of solids by mechanical agitation