Agitator with upper and lower impellers produces increased meridian directed liquid flow circulation, relative to azimuthal flow, by modulating on/off switching at defined time intervals

摘要

Non-conductive liquid is stirred using an agitator with upper and lower impellers, to produce both azimuthal and meridian directed liquid flow circulations. On achieving the Stokes law limit, the agitator rotation is modulated by switching it on/off at defined intervals of time, delta t = ttm-tlam. Independent claims are also included for the following: (i) an agitator arrangement; and (ii) the use of the arrangement to standardize/stabilize chemical reaction conditions.