Experimental and modelling study of drainage and filtration kinetics during oil-mist filtration

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The objective is to develop an empirical, broadly applicable model for the prediction of steady state oil-mist filter performance. Newly devised experimental methods will be used to study how filter and oil properties are related to steady state filtration efficiency, drainage rate and filter saturation ratio, and to derive equations for the aforementioned equilibrium filtration conditions based on oil and filter properties.Oil droplet filtration from gas streams is a very common requirement for industrial and automotive applications; it constitutes a large sector of the filter industry. Unlike solid particle filtration, mist filters reach a steady state for the internal fluid distribution, which cannot be predicted today, nor is the influence of key parameters such as gas flow, collection rate, coalescence, storage capacity or drainage rates understood. Furthermore no experimental methods exist currently to study the internal processes in detail.