Backpulse and Backblow Cleaning of Nanofiber Filter Loaded with Nano-aerosols

Released on by Wing Yi Curie Hau
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  • Backpulse and Backblow Cleaning of Nanofiber Filter Loaded with Nano-aerosols Book Detail

  • Author : Wing Yi Curie Hau
  • Release Date : 2017
  • Publisher :
  • Genre : Electrospinning
  • Pages : 98
  • ISBN 13 :
  • File Size : 87,87 MB
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Backpulse and Backblow Cleaning of Nanofiber Filter Loaded with Nano-aerosols by Wing Yi Curie Hau PDF Summary

Book Description: For multilayer nanofiber filter, two inhomogeneous filters have been tested. One filter was made from a combo filter with a thickermicrofiber layer upstream and a thinner nanofiber layer downstream. The second filter was made from a nanofiber layer with mean fiber diameter of 280nm located upstream and another nanofiber layer with mean fiber diameter of 180nm located downstream. The cleaning effectiveness of the multilayer nanofiber filter was compared with a filter with only single nanofiber layer. The multi-layering configurationcan reduce the skin effect during aerosolloading, however, during cleaning with reversed flowthe downstream microfiber layer provided damping to the cleaning jet undermining the cleaning effectiveness on the upstream nanofiberlayer when compared to the case with regenerating only single nanofiber layer filter. For the filter with two nanofiberlayers, the downstream nanofiber layer enhanced the recapture of loosen particles during cleaning. Further, the presence of the downstream nanofiber layer also compromised the cleaning effectiveness of the nanofiber upstream layerduring reverse flow cleaning. Cyclic filtration, involving both loading and cleaning, have been carried out in both single-layer and multilayer nanofiber filters. Both filter configurations have shown stable behavior in which the growth in residual pressure drop and the decrease in filtration cycle time were present primarily in the first filtration cycle (i.e. the conditioning phase) and subsequently both variables remained relatively constant thereafter. The pressure versus time during loading wasconvex upward for the first loading cycle (at times linear), but changed over to concave downward in subsequent cycles. This isdue to the dead pores of the filter being prefilledwith aerosols after the first loading and cleaning cycle.

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