shows the difference between surface filtration and depth filtration. Conventional felt and woven fabrics require
that a dustcake be built up on the surface of the media to achieve an
acceptable filtering efficiency.
During this process particulate is allowed to migrate into the depths
of the media and eventually some will make it all the way through and out the
clean side. This plugs some of the
pores of the media up with particulate causing a depth filtration fabric to
operate at much higher differential pressures.
laminated to the collection surface making any conventional felt or woven
fabric now a surface filtration product.
Since all of the dust is trapped on the surface of the media the pores
of the filter bag are not plugged up.
The fabric will operate at a much lower differential pressure over a
longer period of time. Also, when the
baghouse goes through a cleaning cycle the BHA-Tex media will clean down to a
“like new” state.