Revolmixing - Mixing Problem Diagnosis Consulting Services

Limits of Current Mixing Theory and Studies

The practice is pumping more water or create more vigorous turbulence to flush up the solids at the bottom.  The concepts of “on bottom movement”,  “off bottom” (or just suspended) speed, and complete uniformity were introduced.Relative power and Speed Required for Solids Suspension with Solids-Settling Velocities of 5-18.3 m/min (Oldshue, 1983)

Turnover ratio is a key parameter for chemical industry to calculate the production rate.  As current products try to produce more turbulence as design target, turn over ratio becomes a vague concept and difficult to estimate.  The new products produce dispersive effect and turbulence is not of consideration, the turn over ratio is easy to calculate. This provide a powerful tool to chemical engineers to estimate the production rate.

Physical (Pilot) Test

We have set up a series of pilot tests to simulate various applications.  For example, if your focus is solids suspension, there is only one key parameter is required to design the mixing equipment: the minimum velocity to move the solids at the bottom (on-bottom motion speed) even at the very corner is required.  This will be tested in a device we developed.

Computing (CFD) Modelling

CFD model will be employed to provide the key design parameters.   Once the minimum bottom velocity is determined, the second step will be using the CFD model to predict the power input, diameter of impeller, rotating speed, etc. to achieve the minimum velocity required at any position.  With both tools, the final products will be guaranteed to provide satisfactory mixing performance.

As our products do not rely on turbulence for mixing as products in the market, computing modelling becomes easier and more accurate.