Chemical engineering industrial Academy will present Pitch turbine in baffled and unbaffled mixing tank.Baffles establish an axial flow pattern, minimizing the tangential or swirl component imparted by the rotation of mixing impellers. In the absence of baffles, the flow created by impeller rotation is two dimensional and causes swirling action, i.e., solid body rotation. Wall baffles transform tangential flows to vertical flows, provide top-to-bottom mixing without swirl. A Standard baffle is 10 to 12% of
cylindrical tank diameter T
Alternatives to the baffles
In small turbine impeller can be mounted off center. In large tank agitator may be mounted in the side of the tank with an angle with radius.
Baffles are generally used in transitional and turbulent mixing, except in severe fouling systems, which require frequent cleaning of tank internals.
Wall baffles increase the power consumption of the mixer and generally enhance the process result.Baffle Minimize the air entrainment.
Baffledandunbaffledmixing
