Abstract
A porous nonwoven was developed to research the filtration properties of clean oil and suspension. The experimental results confirm that the pressure drop increased with increasing flow rate of clean oil. And the permeability coefficient of the material increased first and then decreased as the flow rate increased, while the specific resistance showed an opposite trend. Comparing experimental results with theoretical calculations based on the porous nonwoven, we concluded that the pressure drop of two theoretical expectations were smaller than experimental values. In order to reduce the error we revised the theoretical equation and made a comparison; the result show that the two curves had a better match.. Additionally, a great influence of the quality of particles on filtration property was found. The pressure drop and specific resistance of the suspension increased with an increase in the the number of particles in the oil, while the permeability coefficient showed a decreasing trend.