سال انتشار: ۱۳۸۶
محل انتشار: پنجمین کنگره بین المللی مهندسی شیمی
تعداد صفحات: ۱۱
Moghaddas – Sahand University of Technology, Tabriz, Iran
Revstedt – Lund Institute of Technology at Lund University 1Division of Fluid Mechanics, Lund, Sweden
Trägårdh – Lund Institute of Technology at Lund University 2Division of Food Engineering,Lund, Sweden
Fuchs – und Institute of Technology at Lund University Division of Fluid Mechanics, Lund, Sweden
The mixing field in an aerated stirred reactor with two Rushton turbines was experimentally analysed using the particle image velocimetry and double-planer laser-induced fluorescence measurement techniques. The mixing characteristics were measured at three different impeller rotational speeds: 225, 300 and 400 rpm, for both single- and bubbly two-phase mixing systems. The mixing time was determined from the response curves to a pulse injection of a Rhodamine-590 tracer into the stirred tank. A considerable reduction in mixing time was achieved by increasing the impeller speed and implementing aeration.