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首页> 外文期刊>Journal of Residuals Science & Technology >Coalescence Filtration in Layered Filter Media
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Coalescence Filtration in Layered Filter Media

机译：分层过滤介质中的聚结过滤

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The surface properties of the fibers in a coalescing filter medium affect the pressure drop, permeability, and drainage of the coalesced liquid. The drainage is affected by detachment of enlarged droplets on the filter media. For a highly wetting filter medium, the enlarged droplets do not readily detach from the fiber surfaces and pressure drop increases due to the increase in liquid holdup in the medium. For a non-wetting filter medium, the liquid droplets migrate through the medium before they are able to coalesce into large drops. In principle, layered wetting and non-wetting filter media can improve liquid coalescence performance by producing large droplets without the corresponding increase in liquid holdup. In the present work, composite filter media composed of wetting and nonwetting layers are constructed and tested in coalescence of propylene glycol droplets from air. The composite filter composed of a wetting layer followed by a non-wetting layer performed the best.
机译：聚结过滤介质中纤维的表面特性会影响聚结液的压降，渗透率和排水。排水受过滤介质上增大的液滴分离的影响。对于高度润湿的过滤介质，增大的液滴不易从纤维表面分离，并且由于介质中液体滞留量的增加而导致压降增加。对于不润湿的过滤介质，液滴在聚结成大滴之前先通过介质迁移。原则上，分层的润湿和非润湿过滤介质可以通过产生大的液滴来改善液体的聚结性能，而不会相应增加液体的滞留率。在当前的工作中，构造并测试了由润湿层和非润湿层组成的复合过滤介质，并在空气中丙二醇液滴的聚结中进行了测试。由润湿层然后是非润湿层组成的复合过滤器表现最佳。

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