VAKUTEC® - air scrubber WV2

without packing with vertical droplet separator and Koagulator (Droplet enlarger)

General information

VAKUTEC® type WV2 empty towers are primarily used when exhaust air needs to be cleaned of impurities that have a high affinity to water and must be separated for environmental protection reasons. These impurities include, for example, hydrochloric acid vapours. 

• Application: Mass transfer with high water affinity
• Features: 2m/s air speed in the tower, integrated template, counterflow spraying of the air flow in the tower, 2 droplet separator packages

Sizes and performance range

Emptying towers in sizes from DN180 to DN1.000 for volume flows from 1.100 to 43.999m³/h are described below. VAKUTEC® WV2 empty towers for larger volume flows must be designed separately.

Construction

The droplet separator unit of the empty tower is positioned at the head of the column and equipped with a quick-release fastener. The continuously fed spray nozzles are located on lances that are flange-mounted to the tower. This enables maintenance or inspection within a very short time. A storage tank is integrated, which is equipped with quick filling, overflow, residual emptying, pump and manhole as standard. The air outlet after the droplet separator unit can be either horizontal or vertical.

How it works

VAKUTEC® WV2 empty towers work according to the principle of material transfer in a counterflow process. The air flow is continuously sprayed with the aid of an upstream nozzle level. The impurities in the air are transferred to the sprayed scrubbing liquid due to the high water affinity. The aerosols, carried by the air flow, then collide with the droplet separator packages. The drops of liquid are guided to the inner surfaces of the profile by the curvature of the profile, are diverted downwards by gravity and return to the storage container. The droplet separator unit can optionally be equipped with a coagulator. The coagulator is placed in front of the droplet separator units and thus enlarges the very small droplets so that they can then be separated in the separator unit.

Materials

The materials used depend on the specific physical and chemical loads that occur. Preferably, plastics such as PVC, PP and PVDF are used. In special cases, stainless steel profiles can also be used as droplet separator packages.

Technical data

With a uniform flow, the empty tower including droplet separator and coagulator enables 99% separation of a limiting droplet of approx. 15µ at a pressure drop of approx. 400Pa. With a coagulator, the separator performance increases to a limiting droplet of approx. 10µ at a pressure loss of approx. 500Pa.

(The measured efficiency of the separation efficiency of a boundary droplet under laboratory conditions with water at 20° C)

Detailed catalogue with characteristic curves and dimension sheets

WH_high.pdf