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Experimental and Computational Investigation of Mixing and Separation Performance in a Liquid–Liquid Cyclone Reactor

The electrical resistance tomography was used to estimate the separation efficiency (η) and mean mixing index (Mm) of liquid-liquid cyclone reactor under different overflow split ratio (Ro), feed ratio (Rg/k) and total flow rate (Q). Two factors obtained from numerical simulations, namely the magnitude of tangential velocity and the size of recirculation eddies, were utilized to analyze the experimental results. The experimental results showed that the increasing Ro, Rg/k and Q led to the increase of η and the decrease of Mm. The numerical result revealed that the change in size of recirculation eddies caused by different Ro and Rg/k values played a more dominant role than the change in magnitude of tangential velocity. The change in η and Mm under different Q was caused by both the tangential velocity and size of recirculation eddies. The empirical formulas for predicting the η and Mm of LLCR were established and proved to be reliable.