The effect of impeller pumping and fluid rheology on solids suspension in a stirred vessel

✍ Scribed by Jie Wu; Yonggang Zhu; Lionel Pullum

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 871 KB
• Volume: 79
• Category: Article
• ISSN: 0008-4034
• DOI: 10.1002/cjce.5450790201

✦ Synopsis

Abstract

Pumping velocities of different impellers were measured using laser Doppler velocimetry. It was found that there is a link between impeller pumping capacity and the 5 parameter in the Zwietering correlation. Measurements showed that N~js~ increases with impeller spacing for dual impeller configurations. A dual‐impeller configuration shows less sensitivity to solids loading change than a single‐impeller configuration, and the change in N~js~ is larger for small impeller spacing than for large impeller spacing. An increase in slurry cloud height and a reduction in N~js~ resulted at a small increase of non‐Newtonian viscosity.