Reverse Air (R/A)


When glass fiber fabrics were introduced, a gentler means of cleaning the bags, which may be a foot in diameter and 30 feet in length, was needed to prevent premature degradation.
Reverse-air cleaning was developed as a less intensive way to impart energy to the bags. In  Reverse-air cleaning, gas flow to the bags is stopped in the compartment being cleaned and
reverse (outside-in) air flow is directed through the bags. This reversal of gas flow gently collapses the bags toward their centerlines, which causes the cake to detach from the fabric
surface. The detachment is caused by shear forces developed between the dust and fabric as the latter changes its shape. Metal caps to support the bag tops are an integral part of the bag
as are several sewn-in rings that encircle the bags to prevent their complete collapse during cleaning. Without these rings, falling collected dust tends to choke the bag as the fabric collapses in on itself while cleaning.


Components of a reverse air baghouse:
•    Isolation dampers
•    Filter bag tensioning system
•    Anti-collapse rings on bags
•    Reverse air fan
Typical applications:
•    Induction & arc furnace.
•    Ferro alloy industry.
•    Melting furnace.
•    Cement & steel industry.
•    Bulk materials handling – conveying, screening, sieving, mixing, bin/silo venting
•    Crasher and raw material Processes.
•    Chemical, plastics and pharmaceutical powders.
•    Processes with light or high dust loading.
•    MDF & wood industry

•    Air Volume Range: 50.000 to 1.000.000 m3/hr