Mist Eliminators provide high performance wherever liquid entrainment must be removed from a vertically flow gas stream.
This device contains a knitted wire mesh, supported by an open grid. The gas flows unimpeded through the wire mesh, but the inertia of the droplets causes them to impact the wire surface. The droplets then coalesce on the wire surface. When the droplets reach a certain size they fall down due to gravity.
Knitted Wire Mesh Mist Eliminators are sometimes called crinkled wire mesh or mesh blankets. KASRAVAND has manufactured thick pads of knitted wire mesh for use in the oil and gas industry since 1950. Knitted wire mesh is a cost-effective, reliable solution that is well proven and it continues to be used in modern equipment designs today. The knitted wire media provides surface area for entrained liquid droplets to strike, adhere and coalesce into a free flowing liquid film which drains by gravity. The Souders-Brown equation, a function of gas velocity, gas density and liquid density, is used to determine the appropriate flowing velocity for a given system. The Souders-Brown Equation is:
Where VG = Design Gas Velocity
K = Capacity Factor
pL = Liquid Density
pG = Gas Density
The capacity factor is determined through experience and for each application. It is influenced by the type and style of mist eliminator, the relative geometry of mist eliminator to vapor flow, as well as process considerations such as operating pressure, fluid viscosities and liquid surface tension. Typical values are 0.35 ft/sec for vertical flow and 0.42 ft/sec for horizontal flow, assuming an air water system at ambient conditions.
Filament diameter, filament surface area, pad thickness, and interfacial surface tension between the filament and collected liquid are the primary variables to consider in specifying a knitted mesh pad. The KASRAVAND style is the industry standard general purpose mesh. It is rated to remove 99.9% of 10 micron droplets with 1” water column pressure drop, based on air and water at ambient conditions. We have developed many additional mesh styles to tailor the mist eliminator performance to your needs.Mesh Styles