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Hydrocyclone separate oil droplet size of 15μm and above from oil-water emulsion, particles less than 15μm are difficult to separate using hydrocyclone. The aim of this paper is to improve the separation efficiency of oil particles size of less than 10 μm in hydrocyclone. This paper evaluates the use of ferromagnetic particles for improving separation efficiency of droplet size less than 10μm in liquid-liquid hydrocyclone. Eulerian-Lagrangian model was used in conjunction with the Reynolds Stress Model (RSM) for turbulence and Magneto Hydrodynamic model (MHD) account for ferromagnetic particle conductivity. It was observed that use of magnetic particles increases separation efficiency by approximately 30% and 22% for 0.018% and 0.18% feed concentration respectively for particle size between 1-10μm and 32% increment was observed for particle size between 11-15μm. The increment is attributed greatly to the increase in density of oil as a result of doping micro-sized magnetic particles with oil-emulsion. Finally, it was seen that increasing magnetic field strength from 0.5 Telsa to 1.5 Telsa increases separation efficiency in the range of 1-4% and the use of magnetic particles increase the velocities of the fluid.

Improving Separation Efficiency of Particle less than 10 Microns in Hydrocyclone