Process Tools

Agitator Design

Theory

Agitator Design Calculator

Calculate power consumption, mixing time, and scale-up parameters

Input Parameters

Typical: D/T = 0.33 (D = 0.67 m)

Water: 0.001, Glycerin: 1.4, Oil: 0.05-0.1

Impeller Characteristics

  • • Flow: Radial
  • • Efficiency: Low
  • • Use: Gas dispersion, immiscible liquids

Design Results

Power Consumption
3.13 kW
4.19 HP
Reynolds Number
7.48e+5
Turbulent

Dimensionless Numbers

Power Number (Np):5.000
Tip Speed:3.51 m/s
Specific Power:497.4 W/m³

Mixing Performance

Tank Volume:6.28
Pumping Rate:1263.2 m³/h
Circulation Time:17.9 s
Mixing Time:213.9 s
Blend Time (95%):855.4 s

Design Recommendations

  • ✓ Good tip speed range (2-6 m/s)
  • ✓ Turbulent regime - good mixing efficiency

Impeller Type Comparison

Impeller TypeNp (Turbulent)Flow PatternApplication
Rushton Turbine (6-blade)5RadialGas dispersion, immiscible liquids
Pitched Blade Turbine (45°)1.3AxialBlending, solids suspension
Hydrofoil Impeller0.3AxialLarge volume blending
Anchor Impeller0.5TangentialHigh viscosity fluids
Marine Propeller (3-blade)0.35AxialLow viscosity blending

Learn More

Understand power number correlations, scale-up methods, impeller types, and mixing fundamentals.

View Theory & Examples