Dynamic Scrubbers

​Howden's dynamic semi-dry and wet scrubbing solutions are proven options for the control of gaseous emissions and particulates in diverse applications such as mine process plants, boilers, furnaces and kilns.

Key Features

  • ​Our dynamic scrubbers are robust, energy-efficient units that provide virtually maintenance free service, thanks to a design that keeps the fan blade clean during operation.
  • The HW-4 dynamic scrubbers are the energy-efficient option for removing particulates and gases from the flue gas stream. They have a 99.5% particulate collection efficiency in the 1 – 2 micron range, equivalent to a Venturi scrubber of 3.5 – 4kPa pressure with a pressure drop of only 1.25kPa.
  • Large particulates are initially removed by a combination of centrifugal and gravitational forces, followed by the passing of the stream through scrubber vanes to remove intermediate sized particles. The remaining fine dust is drawn into a chamber where a scrubbing liquid is applied to reduce droplet size and enhance agglomeration. The agglomerated particles are forced against the chamber walls and drain through the discharge cone, with the clean gas stream exiting from the top of the scrubber.


  • High temperature applications.
  • Fluctuating gas inlet temperature applications.
  • Can manage high inlet dust loadings.
  • Solids content of 3% tolerated in recycled water.


  • ​​​Iron and Steel.
  • ​​​Mining.
  • ​​​Oil and Gas.
  • ​​​Paper and Pulp.
  • ​​​Petrochemical.

Find your contact

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General enquiries: 

Nick McLeanwebenquiries@howden.com+44 141 885 7500

If you would like to submit an enquiry please get in touch.

Parts & Service

Lifetime Support

Our lifelong aftercare service will supply original replacement parts, support you with maintenance and installation, and even train your own engineers in maintenance techniques. We keep detailed plant records almost indefinitely, and regularly supply spare parts for machinery over 50 years old.