Abstract:
The current investigation demonstrates the filtration behaviour of two non-woven polyester conductive
filter media, viz. stainless steel (S.S.) fibre in the scrim of
PET filter media and carbon filament in the scrim of PET
filter media. Both the materials are characterized at different charge levels, viz. 0 kV, 4 kV, 8 kV and 12 kV,
respectively, at a particular face velocity (m/min) and inlet
dust concentration (50 g/m3
) on laboratory-based pulse jet
filtration test rig set-up. The tests were conducted at ISO11057 filtration standard, and the data collected are for 2 h
of final measuring phase. Outlet emission in terms of
PM2.5, PM10, mass concentration, particle number concentration, collection efficiency and also residual pressure
drop is found to be considerably lower for S.S. fibre in the
scrim as compared to carbon filament in the scrim. With an
increase in dust charge level from 0 kV to 12 kV, the
downstream emission and residual pressure drop show a
decreasing trend for both filter media. The particle size
distribution, i.e. D10, D50 and D90 values, is higher at
increased charge. On the basis of all the interpretations, the
filtration behaviour of S.S. fibre in the scrim of PET filter
media is found to be better.
