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Flue-Gas Scrubbing

Last updated: May 16, 2019

What Does Flue-Gas Scrubbing Mean?

Flue-gas scrubbing refers to the removal of pollutants from industrial exhaust systems. In general, a scrubber system uses liquids to remove pollutants, but, recently, scrubbers using dry reagents or slurries have been used successfully to limit particulate pollution, sulphur dioxide and other harmful emissions.

Safeopedia Explains Flue-Gas Scrubbing

Various flue-gas scrubbing systems exist, and these are broadly classified as wet, semi-wet or dry systems. The EPA has published a comparison of the three. Previously, wet scrubbers were the most effective systems, removing 90% or more of sulphur compounds from flue gases. However, new dry scrubbing technology allows for comparable results. Plants that make use of flue-gas scrubbers include electrical power plants, cement kilns, metal foundries and refineries. The main purpose for which flue-gas scrubbing is used is for the removal of sulphur dioxide (SO2).

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