Abstract

AbstractFlue gas desulfurization (FGD) systems are end of process pollution abatement techniques used primarily for removing sulfur dioxide from coal‐fired utility and industrial boiler combustion gases. The technology has also been successfully applied to Claus sulfur recovery unit tail gas and sulfuric acid plant tail gas streams. Sulfur dioxide (SO2) and particulate emissions are controlled by a flue gas scrubber system. The scrubber is often designed as an integral part of the steam generation plant. It consists of a two‐stage venturi‐absorber scrubber module designed to treat boiler flue gas. The flue gas from the boiler enters the air quality control system through a common plenum. The gas stream is sent to the individual scrubber modules from this plenum.

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