Direct or excessive wash-nozzle impingement can atomize cleaning liquid, splash droplets into the gas, flood mesh or vane drainage paths, and temporarily increase downstream carryover. Wash rate, nozzle pressure, direction, coverage, and separator drainage capacity should be designed together.

Separated liquid can be re-entrained below a mist eliminator when falling droplets, films, or drainage streams encounter high upward gas velocity or poorly arranged support structures. Protected drainage paths, adequate clearance, and safe liquid return are therefore essential to separator capacity.

Tangential inlets, cyclonic devices, and duct geometry can create swirling gas flow that produces uneven local velocity, angled vane entry, perimeter liquid loading, vibration, and misleading DP measurements. Strong swirl should be reduced or included explicitly in mist eliminator design.

Wall liquid films from spray impingement, condensation, packing, or splashing can travel around the perimeter of a mist eliminator even when gas passes correctly through the media. Edge geometry, support rings, perimeter drainage, and upstream liquid distribution should therefore be included in carryover troubleshooting.

Mist eliminator performance may remain poor after an overload because retained liquid, foam, blocked drainage, redistributed deposits, or mechanical deformation can persist after gas flow returns to normal. Recovery trend over time helps distinguish temporary hydraulic saturation from permanent damage.