Type Cat Source: Ducon Technologies, Inc. Ducon Chemical Absorption Towers are custom designed to absorb and remove gaseous pollutants, odors, fumes and other toxic components. Ducon Chemical Absorption Towers are custom designed to absorb and remove gaseous pollutants, odors, fumes and other toxic components. Ducon can provide spray towers using proprietary spray nozzles with no internals, packed towers with a variety of high efficiency packing, or tray towers with custom designed trays. ADVANTAGES Wide range of packing media, trays, chevrons and demisters are available to suit specific needs Recycle of scrubbing liquid is available. Liquid is distributed uniformly via non-plugging nozzles.