Vertical Air washer / Scrubber WV2
Type WV2 VAKUTEC@ towers are especially suitable for cleaning extracted polluted air, which has a high affinity to water and must be separated due to the demands of environmental protection. Such impurities for example as hydrochloric acid fumes.
The following descriptions are for towers sizes DN180 to DN1000 for air stream volumes of from 1100 to 43999m3/h. VAKUTEC@ towers Type WV2 needed for a larger air stream require special planning and adaptation.
The mist separator for this tower is positioned on top of the column and is equipped with a quick locking mechanism. The continuously fed spray nozzles are positioned on lances, which are flanged to the tower. This makes maintenence or an inspection within the shortest time possible. A collecting main unit is intergrated equipped with the standard fittings, fast filling input, overflow, rest drainage, pump and manhole. The air discharge after the mist separator unit can be horitontal or vertical as required.
Type WV2 VAKUTEC@ hollow towers work on the principle of mass transfer in counter current process. The air stream is continuously sprayed with the help of the spray level positioned upstream. The impurities found in the air are transferred due to the high affinity to water onto the washing liquid. Subsequently the aerosols, carried by the air stream are dispersed onto the mist separator partitions. Due to the curvature of the profiles the moisture drops are driven down the innerface and due to gravity channelled downwards and returned again into the collecting main. As an option the mist separator unit can be equipped with a coagulator. The coagulator is positioned before the mist separator units so that the smallest drops are enlarged and then separated into the separator.
The materials used depend on the specific physical and chemical capacities. Preferably synthetic materials such as PVC,PP and PVDF are used.In special cases stainless steel profiles as mist separator units can be fitted.
With an even air stream flow the hollow tower without a coagulator achieves a 99.9% separation of a minimum drop size of 15u with a loss of pressure of 400Pa. With coagulator the separator efficiency rises on a drop of 10u with a pressure loss of 500Pa.