May/June 2018
Put Wet Scrubbers to Work
Efficiently Remove Vapors, Particulate and Gases

Wet scrubbers effectively remove a variety of pollutants and dust particles from industrial exhaust streams. These air pollution control devices operate by introducing the dirty gas stream with a scrubbing liquid - typically water. Both particulate and/or gases are collected in the scrubbing liquid.

Sly, Inc offers four types of wet scrubbers. Your TEC engineer and can help you determine which is best for your application. 

Sly Impinjet Wet Scrubber
Using a perforated plate with impingment baffle strips, Sly's Impinjet Scrubber is the most efficient low energy scrubber available.
  • Simultaneously collects particulates while absorbing vapors and gases
  • 99% collection efficiencies for 5 microns or larger
  • Low water consumption, typically 3 GPM per 1000 ACFM
  • Minimum pressure drop
  • Handles high temperatures and temperature fluctuations
  • Easily improve efficiency with multiple stages
  • Safely handles combustible dusts without modifications
  • High condensing and cooling efficiency for gases 

Venturi Scrubbers
Designed for ultra fine particulate and mists, the Sly Venturi scrubber works by using the differential between high velocity gases and free flowing water to create droplets that entrap contaminants, hold them in suspension and deliver them as slurry.

Venturi coupled with a cyclonic separator provides non-clogging mist elimination.

In addition to removing pollutants present in process gas streams, these scrubbers provide an opportunity to recycle these gases as fuels or process raw materials. Reclaiming materials result in process savings.

For more details on the design and effectiveness of the Venturi scrubber, read Dwayne Sanders' article, "Venturi Scrubbers and the Big Bang Theory".

  • Non-plugging, trouble free design to introduce the scrubbing liquid.
  • Easily adjustable venturi throat damper.
  • Abrasion resistant flooded elbow design deters scrubber wear.
  • Cyclonic separator for mist elimination (no mesh pads or chevrons to clean or replace).
  • Adjustable spin damper to optimize cyclonic separator performance.
  • Integral sump or separate recirculation system designs available to minimize total water consumption.

Eductor Wet Scrubber
Sly Eductor scrubbers use a high pressure liquid focused into a venturi throat to remove soluble gases and particulate, eliminating the need for a separate exhaust fan or blower to transport the contaminant laden airstream to the filtration device. 

The high pressure flow rate makes the eductor particularly suitable for collection of sticky or gummy particulate, as well as gases which decompose upon contact with water. Eductor scrubbers can also be used for direct-contact condensation.

  • Custom designed for each application
  • Flexibility - easily staged with other collection devices
  • High Efficiency
  • Long Life
  • Minimum Maintenance
  • Low Water Consumption
Packed Tower Scrubbers
From product recovery to air pollution and odor control, packed tower scrubbers absorb and neutralize harmful, toxic gas streams and exhaust clean air into the atmosphere.

Internal packing in the scrubber housing provides a large wetted surface area to induce intimate contact between the contaminated gas and the scrubbing liquid. The contaminant is then absorbed into or reacted with the scrubbing liquid. Recirculation of the scrubbing liquid, which may contain caustic or acid scrubbing agents, is often required to achieve the desired outlet emissions.

Sly engineers and fabricates packed tower scrubbers, custom designing each scrubber for optimum tower diameter, packing depth, recirculation flow rate, and the appropriate mist eliminator style. 

For more information, visit Sly, Inc, or contact your TEC representative.
In This Issue

"If you think hiring professionals is expensive, try hiring amateurs" 

- Anonymous



The Loredo bridge and the High River bridge are one mile apart. The local crew team starts rowing upstream at the High River bridge. As the crew team passes under the Loredo bridge, the coxswain's hat falls into the river. Ten minutes later, the coxswain notices. 

He immediately turns the boat around and has the crew go back to get it, rowing at the same constant rate. By the time the crew team reaches the hat, they are back at the High River bridge.

How fast is the river flowing?

Technical Resources

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Steven Duke
Birmingham, AL
Bob Hodges
Covington, LA
Harvey Kinsey
Atlanta, GA
Lance Steed
Mobile, AL

TEC Engineering, 700 Century Park South, Suite 223, Birmingham, AL 35226
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