Forain's range of filter
separators is intended for those applications where a high
efficiency removal of solids and liquid particles is required,
regardless of their size. The use of these separators is
the best solution to remove very fine mists or aerosols
from the gas flow. Other applications include the removal
of lubricating oil from process gas, entrainments in natural
gas lines upstream compressor stations, reducing and metering
Principle of operation (FSO
and FSV type)
In filter separators, removal of solid and liquid particles
takes place gradually.
At vessel inlet, larger particles are removed by gravitational
effect due to the gas velocity decreasing and by impingement
on inner surfaces.
Filter elements entrap the smaller solid particles, while
liquid droplets coalesce to be removed in the following
stage consisting of a vane unit. The contaminant is collected
either in a separate reservoir connected to the filter separator
or in the same vessel out of the gas flow.