Schematics of a jacketed agitated vessel.<br>
Agitator geometry is a "Rushton type" (the most common in chemical industry), but many other impeller geometries can be used.
<a href="//commons.wikimedia.org/wiki/User:Daniele_Pugliesi" class="mw-redirect" title="User:Daniele Pugliesi">Daniele Pugliesi</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>