Mixing and Agitation
- Mild agitation is obtained by circulating the liquid with an impeller at superficial velocities of 0.1-0.2 ft/s and intense agitation at 0.07-1.0 ft/s.
- Intensity of agitation using impellers in baffled tanks is measured by power input and impeller tip speeds, as given in the table.
- In-line blenders are adequate when a contact time of 1-2 s is sufficient, with power inputs of 0.1-0.2 hp/gal.
- Power and Tip Speed requirements for agitation in baffled tanks
The information is arranged by commonly recognised categories. In some instances, definitions and general statements have been included for clarity.