ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Gas Hold-Up and Power Consumption for Gas–Liquid System Agitated in a Stirred Tank Equipped with Vertical Coil

M. Major-Godlewska and J. Karcz

Department of Chemical Engineering, Technical University of Szczecin, PL-71-065 Szczecin

E-mail: joanka@carbon.tuniv.szczecin.pl

Received: 7 April 2003

Abstract: The aim of the experimental study presented in the paper was to analyzethe mixing process in a gas–liquid system mechanically agitated in a stirredtank of inner diameter D = 0.634 m equipped with ahigh-speed impeller and tubular vertical coil (tubular baffles). The regimes ofthe dispersion of gas bubbles in the liquid, gas hold-up, and power consumptioncharacteristics were determined for varying stirrer speeds and gas flow rates.The results of the measurements were described by an empirical equation usingdimensionless quantities.

Chemical Papers 57 (6) 432–444 (2003)