Scrubbers

An industrial scrubber is a pollution control device that removes contaminants from exhaust gas streams using liquid or dry media. Scrubbers are widely used in processes that generate particulate matter, acid gases, volatile organic compounds (VOCs), and odors. These systems ensure safer workplace air, regulatory compliance, and a cleaner environmental impact.

Wet scrubbers operate by introducing a liquid—often water or a reagent solution—into the hot gas stream, capturing particles and gases through physical contact and chemical absorption. They come in designs such as packed-bed towers, venturi-induced systems, spray towers, and fluidized bed scrubbers, each optimized for specific industry needs. Dry scrubbers, on the other hand, inject solid sorbents like lime or activated carbon directly into the gas to neutralize acid gases without generating wastewater. Mechanically aided scrubbers use rotating blades or rotors to create fine droplets for pollutant capture.

Packed-bed towers—also known as packed-bed or plate scrubbers—are ideal for removing soluble gases like SO₂, HCl, and NH₃ through intimate contact with neutralizing liquids. Spray towers and jet venturi scrubbers also perform well for gas absorption when paired with chemical reagents such as caustic or lime. Fluidized bed scrubbers offer enhanced mass transfer for both particulate and gas-phase pollutants through turbulent mixing.