The primary duty of Demister Pads (Mist Eliminators) is removing entrained liquid droplets from gas and vapor streams in separators, scrubbers, evaporators and columns with knitted wire mesh demister pads (mesh pad mist eliminators). Below: the sectors that specify it in volume, the checklist used to select the right mesh and alloy for the application, handling notes, and the known limits of the type.
Typical Applications for Demister Pads (Mist Eliminators)
Where Demister Pads (Mist Eliminators) is specified and bought:
- Oil & gas production: inlet separators, gas scrubbers and glycol contactors.
- Chemical & refining: distillation, absorption and stripping columns.
- Evaporators & desalination: stopping brine and product carry-over into vapor.
- Compressed air & vacuum: oil-mist and water separators.
How to Specify Demister Pads (Mist Eliminators) for Your Application
- Vessel & manway: Pad diameter, number of sections and the largest piece that fits the manway.
- Pad type: Standard density for general duty, high-efficiency for fine mist, open type for fouling service.
- Support grids: Top and bottom grids with tie wires so the pad cannot lift or sag.
- Standard: Quote ASME sizing practice and the size designation from the table on the product page, plus any value you changed in the technical drawing.
Handling & Installation Practice
- Pack sections tightly against the vessel wall and each other — any gap lets gas bypass the mesh.
- Check the design gas velocity: above the flooding limit the pad re-entrains liquid.
Common Selection Mistakes with Demister Pads (Mist Eliminators)
- Undersizing the pad area so gas velocity exceeds the design K-factor.
- Using high-density pads in fouling or waxy service, where they plug.
Where Demister Pads (Mist Eliminators) Is Not the Right Choice
Not a solid-particle filter and not for heavily fouling gas without an open or washable design.
