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Bao Li, Yang Guohua, Li Hanpeng, Wang Binghui, Du Ke, Huang San. Filtering soot particles by stainless steel sintered fiber felt combining with powder[J]. Chinese Journal of Environmental Engineering, 2013, 7(4): 1472-1476.
Citation: Bao Li, Yang Guohua, Li Hanpeng, Wang Binghui, Du Ke, Huang San. Filtering soot particles by stainless steel sintered fiber felt combining with powder[J]. Chinese Journal of Environmental Engineering, 2013, 7(4): 1472-1476.
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Filtering soot particles by stainless steel sintered fiber felt combining with powder

  • 1.

    Maritime College, Ningbo University, Ningbo 315211, China

  • Received Date: 06/11/2012
    Accepted Date: 23/10/2012
    Available Online: 09/04/2013
    Fund Project:
  • In this study, powder additives were proposed to improve the low filtration efficiency and eliminate the unburnt oil particle adhesion that were found in the stainless steel sintered fiber felt removing exhaust soot particulates of diesel engine. By using a Welas 3000 aerosol granular size spectrometer to measure the particulate concentrations before and after the filtering process, experiments were performed using stainless steel sintered fiber felts with various filtering precisions (i.e., 5~30 μm) coated by powder additives layer with different thicknesses (i.e., 0.5~3 mm) to filter soot particles (D50 =0.183 μm) produced by smoke agent. Filtering efficiencies and classification characteristics under various circumstances reveal that the grain size and layer thickness of power additives, airflow velocity, and reaction times affect greatly the filter efficiency. With the airflow velocity of 3m/min, grain size of 200~250 mesh, and power layer thickness of 1.5 mm, the filter efficiency is initially up to 95.746% and then increases to 98.499% after 30 min. Again, high levels of filter efficiencies above 98% can generally maintain within 300 min.
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Filtering soot particles by stainless steel sintered fiber felt combining with powder

  • Received Date: 06/11/2012
  • Accepted Date: 23/10/2012
  • Available Online: 09/04/2013
Fund Project:

Abstract: In this study, powder additives were proposed to improve the low filtration efficiency and eliminate the unburnt oil particle adhesion that were found in the stainless steel sintered fiber felt removing exhaust soot particulates of diesel engine. By using a Welas 3000 aerosol granular size spectrometer to measure the particulate concentrations before and after the filtering process, experiments were performed using stainless steel sintered fiber felts with various filtering precisions (i.e., 5~30 μm) coated by powder additives layer with different thicknesses (i.e., 0.5~3 mm) to filter soot particles (D50 =0.183 μm) produced by smoke agent. Filtering efficiencies and classification characteristics under various circumstances reveal that the grain size and layer thickness of power additives, airflow velocity, and reaction times affect greatly the filter efficiency. With the airflow velocity of 3m/min, grain size of 200~250 mesh, and power layer thickness of 1.5 mm, the filter efficiency is initially up to 95.746% and then increases to 98.499% after 30 min. Again, high levels of filter efficiencies above 98% can generally maintain within 300 min.

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