Dry Gas Filters
These filters have been proved to be the best solution
in those applications where the size of particles to be
removed is too small to allow the use of common separators.
Forain's dry gas filters
can remove solid particles from a gas stream in every working
condition, by using a number of suitable filter elements.
These filter elements are chosen according to the requested
grade of filtration efficiency and pressure drop, besides
other factors as type and quantity of entrainments, maintenance
Principle of operation (FCV type)
Filtration of solids:
as the gas gets into the filter, the velocity decreases
and the heavy entrainments drop out of the gas stream. The
gas then raises and flows through the filter elements. Here
the micronic particles are trapped in the fibres and retained;
clean gas then flows through the inner perforated metal
liner (core) to the filter outlet.
Filtration of liquids:
for this application the real task of the filter elements
is not to filter the liquids but to cause a coalescence
effect. The liquid entrainments, in the form of fogs, lay
on the fibres of the cartridge generating larger and heavier
droplets which will be removed by gravity at the outlet
of the cartridge itself.