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Wet Scrubbers
A wet scrubber removes particulates and acid gases from flue gas by bringing it into contact with a liquid — typically water or a water-based chemical solution — capturing pollutants before the gas is released.
How It Works
Flue gas is passed through or sprayed with liquid. Particulates and soluble gases are captured by the liquid droplets, and the cleaned gas exits while the contaminated liquid is drained for treatment or recirculation.
Types of Wet Scrubbers
- Spray Tower Scrubbers — Gas passes through a chamber where liquid is sprayed downward or across it.
- Venturi Scrubbers — Gas is forced through a narrowing throat at high velocity, where it meets the liquid, producing fine droplets for effective particulate capture.
- Packed-Bed Scrubbers—Gas flows through a bed of packing material wetted with liquid, increasing surface contact area; commonly used for gas absorption such as SO₂ removal.