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INVESTIGATION OF FEEDPIPE BACKMIXING IN AN AGITATED VESSEL
Korean Journal of Chemical Engineering, July 1996, 13(4), 337-342(6), 10.1007/BF02705959
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Abstract
Feedpipe backmixing in an agitated vessel was investigated using a newly developed conductivity technique. By this technique, the onset of feedpipe backmixing could be detected and the penetration depth of the vessel fluid into a feedpipe was determined. For a give feedpipe flowrate, critical agitator speeds to eliminate feedpipe backmixing were determined using Rushton six-bladed disk turbine impeller (6BD) and high efficiency, axial-flow type 3- bladed impeller (HE-3) of 8.89 and 12.70 cm diameters in 11.2 liter reactor. The ratio of the feedpipe velocity to the critical agitator speed (vf/vt) was determined as a function of feedpipe
Reynolds number (NRet). The conductivity technique was successful either in the laminar regime, the transitional regime, or in the turbulent regime in the feedpipe.
Reynolds number (NRet). The conductivity technique was successful either in the laminar regime, the transitional regime, or in the turbulent regime in the feedpipe.
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