Mist eliminators in chlor-alkali and wet chlorine service can face corrosive wet chlorine, concentrated brine droplets, salt crystallization, and demanding material requirements. Separator geometry, drainage, wash strategy, and all structural materials should be reviewed together.

Mist eliminators in oil and gas knockout drums provide final droplet removal after bulk-liquid separation. High pressure, hydrocarbon properties, slugging, foaming, level control, fouling, gas turndown, pressure drop, and downstream compressor requirements all influence the correct separator design.

Cooling tower drift eliminators and process mist eliminators use related inertial separation principles but are optimized for different duties. Drift eliminators emphasize low pressure drop and large airflow, while process demisters may require finer separation, specialized materials, or stricter carryover control.

Mist eliminators in distillation columns reduce mechanically entrained liquid reaching the overhead system. Their design must consider vapor load, flooding, reflux rate, product purity, condensation, fouling, and especially pressure drop in vacuum columns.

Steam drum mist eliminators operate under elevated pressure and temperature and must control boiler-water carryover into steam. Steam density, boiling entrainment, drum level, foaming, water chemistry, drainage, and support integrity make the application fundamentally different from an atmospheric scrubber demister.