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  2. Venturi scrubber - Wikipedia

    en.wikipedia.org/wiki/Venturi_scrubber

    Figure 6 - Adjustable-throat venturi scrubber with movable plate. Venturi scrubbers can be used for removing gaseous pollutants; however, they are not used when removal of gaseous pollutants is the only concern. The high inlet gas velocities in a venturi scrubber result in a very short contact time between the liquid and gas phases.

  3. Liquid-to-gas ratio - Wikipedia

    en.wikipedia.org/wiki/Liquid-to-gas_ratio

    For particulate removal, the liquid-to-gas ratio is a function of the mechanical design of the system; while for gas absorption this ratio gives an indication of the difficulty of removing a pollutant. Most wet scrubbers used for particulate control operate with liquid-to-gas ratios in the range of 4 to 20 gallons per 1,000 actual cubic foot (0 ...

  4. Dust collector - Wikipedia

    en.wikipedia.org/wiki/Dust_collector

    A wet scrubber, or venturi scrubber, is similar to a cyclone but it has an orifice unit that sprays water into the vortex in the cyclone section, collecting all of the dust in a slurry system. The water media can be recirculated and reused to continue to filter the air. Eventually the solids must be removed from the water stream and disposed of.

  5. Flue-gas desulfurization - Wikipedia

    en.wikipedia.org/wiki/Flue-gas_desulfurization

    The higher the pressure drop in the venturi, the smaller the droplets and the higher the surface area. The penalty is in power consumption. For simultaneous removal of SO 2 and fly ash, venturi scrubbers can be used. In fact, many of the industrial sodium-based throwaway systems are venturi scrubbers originally designed to remove particulate ...

  6. Fluidized bed scrubber - Wikipedia

    en.wikipedia.org/wiki/Fluidized_bed_scrubber

    A Fluidized Bed Scrubber system uses carefully selected hollow plastic elements of varying shapes, according to the process requirements, to generate a three phase fluidized bed in which increased Reynolds numbers (turbulence) in the gaseous phase, and the liquid phase, provoke an intense enhancement of turbulent action. [1]

  7. Low-temperature thermal desorption - Wikipedia

    en.wikipedia.org/wiki/Low-temperature_thermal_de...

    Rotary dryers and asphalt aggregate dryers most commonly use dry gas cleaning unit operations. Cyclones are used to capture large particulates and reduce the particulate load to the baghouse. Baghouses are used as the final particulate control device. Thermal screw systems typically use a venturi scrubber as the primary particulate control.

  8. Wet scrubber - Wikipedia

    en.wikipedia.org/wiki/Wet_scrubber

    The mist eliminator for a venturi scrubber is often a separate device called a cyclonic separator A packed bed tower design where the mist eliminator is built into the top of the structure. Various tower designs exist. The design of wet scrubbers or any air pollution control device depends on the industrial process conditions and the nature of ...

  9. Spray tower - Wikipedia

    en.wikipedia.org/wiki/Spray_tower

    Spray towers are low energy scrubbers. Contacting power is much lower than in venturi scrubbers, and the pressure drops across such systems are generally less than 2.5 cm (1 in) of water. The collection efficiency for small particles is correspondingly lower than in more energy-intensive devices.

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