سال انتشار: ۱۳۸۶

محل انتشار: پنجمین کنگره بین المللی مهندسی شیمی

تعداد صفحات: ۱۱

نویسنده(ها):

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

چکیده:

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.