Activated carbon purification of flue gases - by upward flow through tower with perforated trays contg. activated carbon spheres

摘要

The tower comprises a series of horizontal perforated trays, alternating left and right in their symmetry about a central axis. Each tray is subdivided by a vertical barrier or weir into one zone (I) constituting 80-95% of its area and a second zone (II) constituting 5-20% of its area. Pref. the open area (perforated area) of zone (I) is 4-20 times that of zone (II). The ratio of open to solid area is pref. 5 - 25%. The barrier height is pref. 20 - 60 mm. By utilising small spheres or particles of activated carbon, improved stability of the fluidised beds is obtd. and gaseous impurities are continuously and effectively removed from the gas by adsorption.