 Gas
Filters
For
Natural or Process Gas
Filter Cartridges
Particle retention: 1 micron size (standard).
Optional: 0.3, 0.5 and 1 micron absolute.
Cartridge sizes: Type WM-536 (5-1/2"diameter X 36" long),
WM-572 (5-1/2" X 72") and WM-336 (3-1/2" X 36").
Core and Caps: Steel (Standard). Optional: 304 or 316 stainless steel.
A gas coalescing filter is used for removal of aerosol mist from gas.
Aerosol mist particles become trapped in the fiberglass media because
they do not have enough mass to pass through the cartridge media and
are trapped by impingement. As these small liquid particles come in
contact with each other they coalesce into larger droplets, eventually
becoming large enough to pass through the cartridge(s). The enlarged
particles will then fall to the bottom by gravity due to a drop in
velocity. This velocity drop is caused by the gas flowing from the
inside of each cartridge into the much greater area of the filter
vessel, allowing the flow to slow down enough that the droplets will
fall to the bottom of the vessel where the drain is located.
Coalescing elements which have the flow path going from the inside-out
should not be used if solids are present to any degree. They have
less surface area when compared to a cartridge which flows outside-in.
If coalescing of aerosol mist is desired but solids are present, we
suggest you consider a filter separator
which will remove both mist and solids. In a filter separator,
gas enters the vessel and passes through the cartridges with the flow
going through the cartridge outside-in. The gas then flows into a
second chamber, passing through a separator element which will remove
any droplets which have not already fallen out by gravity.
Whether you select a gas coalescer or a filter separator depends on
the application. The filter separator generally has a higher initial
cost because it has both filter cartridges and a separator element,
thus the need for two chambers. Coalescing filters use gravity to
assist in separation, all occurring in a single chamber. Also, coalescing
cartridges for a filter separator are much lower in cost compared
to the more complex cartridge used in coalescing filters.
Liquid and solid particles from .3 micron size and larger will be
removed from a gas. Other micron ratings available include .5, 1,
5, 10, etc.
All of our vessels are manufactured in our own A.S.M.E. code facility
in Longview, Texas. We manufacture filter vessels in carbon steel,
stainless steel, monel, Inconel and other metals.
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