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Preparation and characterization of porous cordierite pellets and use as a diesel particulate filter

机译：多孔堇青石颗粒的制备和表征，并用作柴油机颗粒过滤器

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This paper discusses the preparation and characterization of porous pellet filters for a diesel particulate filter(DPF).The process for creating the porous ceramic pellets was developed using simple gelcasting and a bubble-in-water-in-oil type of pseudo-double-emulsion.The pellets,consisting of a foamed cordierite suspension,were dispersed and consolidated in spherical shapes in liquid paraffin as gelation progressed,and were prepared by a conventional mechanical foaming method combined with gelcasting.In comparison with a wall-flow filter,the pellet filter has the advantages of being free of cracks during regeneration and having a flexible shape.Experiments were conducted in a test simulation of diesel engine exhaust conditions.Pressure drop and particle loading rate were compared using two pellet filters having porosities of 70% and 0%,respectively.Regeneration capability was also tested.The filter which mixed 1 and 2 mm pellets demonstrated feasibility as a DPF.
机译：本文讨论了用于柴油机微粒过滤器（DPF）的多孔颗粒过滤器的制备和表征。使用简单的凝胶浇铸和油中气泡类型的伪双滤膜开发了多孔陶瓷颗粒的制备方法。随着胶凝的进行，将由泡沫堇青石悬浮液组成的颗粒分散并固结在液体石蜡中呈球形，并通过常规的机械发泡方法结合凝胶浇铸法制备。与壁流式过滤器相比，该颗粒过滤器的优点是在再生过程中无裂纹且形状灵活。在柴油机排气条件的测试模拟中进行了实验。使用两个孔隙率分别为70％和0％的颗粒过滤器比较了压降和颗粒负载率分别测试了再生能力。混合了1毫米和2毫米颗粒的过滤器证明了作为DPF的可行性。

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