INFLUENZA DELLA FORMA E DELL'ESTENSIONE DEI DIAFRAMMI SULLA MISCELAZIONE DI FLUIDI ALIMENTARI CON AGITATORI A GIRANTE RUSHTON

A test bench for performance measurements of the mechanically agitated vessels working in turbolent mixing was assembled. A comparison between two mechanically agitated vessels with different pattern of baffles was carried-out. The first had four usual laminar baffles and the second had four new baffles with a triangular shape. These baffles was proposed to reduce the fouling and to improve the cleaning. For both baffles pattern a various tests changing the width were carried-out. So power and mixing time were measured and mixing energy was calculated. For triangular baffles the power was smaller than for laminar baffles, whereas the mixing time was highest and the mixing energy was the same. Finally, the width influence for both baffles pattern showed that power, time and energy, were steady for B/T = 0,10