EnviroAir designs custom Wet Scrubber systems including venturi scrubbers and packed bed scrubbers. We specialize in turnkey installations of environmental air systems and can provide single source responsibility for the design, fabrication, installation and startup of your wet scrubber system
Venturi scrubbers are designed to remove particulate from exhaust air streams. They offer the advantages of being able to handle high temperature or moisture laden gases while reducing the dust problem resulting from disposing of collected dust. In venturi scrubbers, particulate laden air is passed through a venturi tube to which water is added at the throat. In spite of the relatively short contact time, the extreme turbulence in the venturi promotes impaction between the wetted dust particles and the flooding water. The wetted particles and droplets are then separated from the exhaust air in a cyclone. Recirculation of the water is possible with a custom designed recirculation tank.
Packed bed scrubbers are designed to neutralize gases and odors produced during the manufacturing process. Usually, the flow through a packed bed scrubber is countercurrent, with liquid introduced at the top to flow down through the packing, while gas is introduced at the bottom to flow upward through the packing. The packing is designed to produce a large surface area for the liquid to contact the solute gas. Chemicals can be metered into the recirculation water in order to aid in the neutralization process.
EnviroAir provides venturi scrubbers to remove dust from exhaust air. Our venturi scrubber has a wetted wall venturi eliminating both the wet/dry interface region where buildup often occurs as well as the atomizing spray nozzles which can be susceptible to plugging. The dust-laden air and water are accelerated in the converging section of the venturi. The water is atomized in the venturi throat and the dust particles collide with and are absorbed by the water droplets.
In a normal profile scrubber, the exhaust air and dust-laden water droplets enter a cyclonic separator through a tangential inlet. This inlet causes the flow to spin through the separator towards the top discharge. The heavy dust-laden water droplets are thrown to the separator wall by centrifugal force where they collect and coalesce. This liquid slurry runs down the separator wall to the bottom drain or integral recirculation tank. The clean exhaust air is discharged out the top of the separator.
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EnviroAir designs custom wet scrubber systems including packed bed scrubbers. Our specialty is turnkey installations of environmental air systems and can provide single source responsibility for the design, fabrication, installation and startup of your wet scrubber system. Packed towers or packed bed scrubbers are essentially contact beds through which gases and liquid pass counter currently or cross flow. They are used primarily for applications involving extreme pH gases, odors, vapors, and mist removal. While these collectors can capture solids, they are not normally used for this purpose because wet dust collecting in the beds would require unreasonable maintenance.
Packed bed scrubbers are designed to neutralize gases and odors produced during manufacturing processes. Usually, the flow through a packed bed scrubber is counter current, the liquid is introduced at the top and flows down through the packing, while gas is introduced at the bottom to flow upward through the packing. The packing is designed to produce a large surface area for the liquid to contact the solute gas. The countercurrent flow is highly efficient since, as the concentration of pollutant in the gas decreases while rising through the tower, there is a constantly fresher neutralization liquid available for contact.
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