High-velocity droplets, slurry, and abrasive particles can erode vane mist eliminators, especially at leading edges, bends, and liquid pockets. Erosion can alter blade geometry and drainage even when the material remains chemically compatible.

Mist eliminator drain lines need proper hydrostatic sealing and pressure balance so that liquid can leave without allowing process gas to blow through the drainage path. Incorrect seal height, backpressure, vessel level, or drain blockage can cause liquid holdup and re-entrainment.

Waste-incineration wet scrubber mist eliminators may face acidic liquid, salts, particles, condensation, and highly variable process loading. Open geometry, effective washing, corrosion resistance, fouling margin, and maintenance access are critical for stable operation.

Phosphoric acid and fertilizer scrubbers can expose mist eliminators to acidic droplets, fluorides, dissolved salts, solids, and sticky deposits. Open geometry, washing, drainage, compatible materials, and maintenance access can be more important than maximum clean-condition efficiency.

Nitric acid absorber mist can come from mechanical entrainment or fine condensation aerosol. Separator selection should distinguish these mechanisms and consider acid concentration, temperature, particle size, liquid loading, pressure drop, condensation location, and outlet emission requirements.