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Oleophilic and oleophobic media combinations - Influence on oil mist filter operating performance

Penner, T.; Meyer, J.; Dittler, A.

Abstract (englisch):
For the filtration of fine mists, glass fiber nonwovens are commonly used as filter media, especially in high efficiency applications. For the filters, several layers of these media are usually wrapped around a cylindrical grid; often several types of media are combined to reduce pressure drop and entrainment and improve separation efficiency. The media in use typically differ in their structural and wetting properties. The media configuration, i. e., the sequence of individual media layers in the filters, is generally chosen based on empirical values. In this work, experimental studies with several configurations of filter media were carried out, investigating the operating behavior of the filters. Four media of different structure, two oleophilic and two oleophobic each were combined to determine combinations with beneficial operating properties. It was found that using media with coarse pore structure on the upstream side of the filters could significantly reduce pressure drop, while separation efficiency was slightly improved or hardly affected by the sequence of media. The reason for this improvement was found to be the impact of media sequence on liquid transport mechanisms in the filter media. ... mehr



Originalveröffentlichung
DOI: https://doi.org/10.1016/j.seppur.2020.118255
Zugehörige Institution(en) am KIT Institut für Mechanische Verfahrenstechnik und Mechanik (MVM)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 1383-5866, 1873-3794
KITopen-ID: 1000128745
Erschienen in Separation and purification technology
Verlag Elsevier
Band 261
Seiten Article no: 118255
Vorab online veröffentlicht am 24.12.2020
Schlagwörter Nonwovens, oil mist filtration, coalescence filters, filter design, filter media
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