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 given feedpipe flowrate. critical agitator speeds to eliminate feedpipe backmixing were determined using Rushton six-bladcd 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 (v f /v i ) was determined as a function of feedpipe Reynolds number (N R,T ). 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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Jo, MC., Song, SH., Noh, BI. et al. Investigation of feedpipe backmixing in an agitated vessel. Korean J. Chem. Eng. 13, 337–342 (1996). https://doi.org/10.1007/BF02705959
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DOI: https://doi.org/10.1007/BF02705959