Showing papers on "Spray tower published in 1972"

Device for separating so{hd 2 {b and dust from flue gases

Abstract: A spray tower for separating contaminants from fumes, in which the cleaning process is favored by introducing into the supplied gas calcareous additives, comprises a tower structure, an inlet tube feeding the tower from above, bottom outlets for clean gas and for sludge water, and wash water spraying nozzles arranged vertically in the tower axis. In order to avoid calcareous accretions on the tower walls and also to permit the use of lime dust as additive, the device for injecting additives is located in the feed tube. This tube is extended downwards by an intake sleeve and additional spraying nozzles are provided around the intake sleeve which are adapted to rinse the tower walls and produce a screen of wash water enclosing the incoming stream. The screen effect is increased by the addition of radially spraying nozzles. In a preferred embodiment, the tower is roofed by a frustoconical cover surrounding the intake sleeve and proportioned to the dimensions thereof, the additional nozzles being located between this cover and the intake sleeve, and the device injecting additives being arranged in vertical direction above the intake sleeve, in or close to a bend of the feed tube which is provided with guiding baffles.