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Removal of fine particulate matter from exhaust gases by metallic microsieves

: Stahl, E.; Robert, J.; Deerberg, G.

Filtech Exhibitions Germany, Düsseldorf:
International Conference & Exhibition for Filtration and Separation Technology, FILTECH 2009. Vol.2: G-sessions, M-sessions : October 13 - 15, 2009, Rhein-Main-Hallen, Wiesbaden, Germany
Meerbusch: Filtech Exhibitions Germany, 2009
ISBN: 978-3-941655-36-2
International Conference & Exhibition for Filtration and Separation Technology (FILTECH) <2009, Wiesbaden>
Conference Paper
Fraunhofer UMSICHT Oberhausen ()
exhaust gas purification; metallic microsieve; filter cake; process performance; boundary condition; Abgasreinigung; metallisches Mikrosieb; Filterkuchen; Prozessleistung; Grenzbedingung

Metallic micro sieves are a promising filter media to remove fine particulate matter from gases. Therefore, a study has been carried out in order to show its filtration performance (pressure drop and filtration efficiency) in respect to different boundary conditions (volume flow, temperature). Experiments showed high particle retention rates after a short time, depending on the hole diameter. By applying micro sieves with an average pore diameter of 8 Mym, a retention rate of more than 99 % could be obtained after 90 - 160 seconds. The practical application of micro sieves as filter in the exhaust gas of wood fired furnaces gave good results as well.