Patent ID: 9403123
Filing Date: 2016-08-02
CPC Classification: B01D,B05B,F26B

Claim Text:
1. A spray dryer absorption system for flue gas impurity reduction comprising: a vessel defining an interior chamber of approximately 12 meters or larger in diameter; and one or more dispersers arranged in a roof of the interior chamber with each disperser of the one or more dispersers comprising a shroud, an atomizer for atomization and dispersal of absorption liquid or a reagent slurry droplets therefrom, centered within the shroud and surrounded by a flow directing device, and the flow directing device comprising three annular channels formed concentrically around the atomizer for a flow of flue gas therethrough, wherein an inner channel reduces scale formation on the shroud, a middle channel sized to provide approximately 65 to approximately 80 percent of a total flow area of the flow directing device increases droplet rotational momentum and flue gas penetration, and an outer channel reduces scale formation on walls of the interior chamber.