Wet scrubber VDN
12Pages

dirty air inlet spraying zone separator housing turbulence eliminator radial fan discharge connecting piece water replenishing tank fresh water supply waste disposal bin Compact wet scrubber VDN-E with detachable disposal bin Series wet scrubber VDN-T For combustible, explosive, humid and adhesive dusts The venturi wet scrubber models are used for the separation of substances that cannot normally be separated or are difficult to separate in dry operating systems. Our high-performance separators inject water into the airflow as the basic concept of the venturi principle. These multipurpose units can be utilized in almost all sectors of industry. Technical description A capturing system collects the air pollutants at the source and conveys them via a ductwork system to the dirty air inlet of the separator to the spraying zone. At the narrowest point, water is injected into the airflow. When entering the airflow, the water is atomized by high accelera- tion, creating a homogenous waterair mix that moistens the dust particles. Intensive rotation in the subsequent separator housing separates the water droplets from the airflow, by the cyclone principle. Before flowing into the fan, the cleaned air is stabilized by a turbulence eliminator. From there it is expelled through a discharge outlet into the recirculation piping system, or is ducted directly outdoors. The separated dust settles and is discharged via the disposal equipment. During grinding, polishing or • other machining processes where glowing embers or hot dust particles may be created. • Diemaking/diecutting or other processes where dust and coolant fumes or mist are released. • umes containing dust from driers, F coolants, and extruders in the chemical and plastics industry. • oist and/or adhesive dust created M in foundries and during the manufacture of ceramics or glass. • Press fumes released in the production of particle board and engineered wood products. • ombustible and explosive dust C resulting from abrasive blasting, grinding and polishing of light metals (aluminum and magnesium alloys).

Wet scrubber compact series The venturi wet scrubber compact series includes three models (VDN-E, VDN-T, VDN-TE, VDN-AS, VDN-TA). They are available in different Model series VDN-E The separated dust which is suspended in the water settles as sludge and is collected in the detachable disposal bin underneath the scrubber unit. The bin must be emptied periodically during system down-times. This disposal mode is suitable for a low volume of dust consisting of particles with good sedimentation. sizes with various types of waste disposal options. Airflows range from 2,500 m3/hr up to 28,000...

Model series VDN-AS This unit is equipped with an automatic de-sludging device. A scraper continuously discharges the sedimented dust as sludge or at intervals. This disposal mode is suitable for systems with a high output of dust and continuous operation (2-3 shifts). Wet scrubber VDN-AS with de-sludging device Model series VDN-TA This model is designed for larger airflows. The modular construction, i.e. venturi nozzle, mist separator, and fan of this system exist in different locations, allowing the system to be adjusted to any large airflows. External installation of one or multiple...

Open and closed systems Our VDN series is available as a closed or open system. The water level in the closed system is regulated in such a way that the water surface is located directly at the perforated edge of the Venturi nozzle. If floating matter were to collect on the water surface, it would be atomized and continuously sprayed, thereby decreasing separation efficiency. For such instances, the water supply tank is separate from the nozzle area and the open water area, thereby creating an „open system“. If necessary, it can be manually cleaned, flushed away through the diverter or...

Compact wet scrubber VDN-E Nominal airflow Available vacuum Weight without water Tank capacity, approx. Discharge without silencer Discharge with silencer Dimensions and weights may change! Subject to modification.

Compact wet scrubber VDN-T (Standard) VDN-T (standard) Nominal airflow Available vacuum Weight without water Tank capacity, approx. Discharge without silencer Discharge with silencer Dimensions and weights may change! Subject to modification.

Compact wet scrubber VDN-T (open system) VDN-T (open system) Nominal airflow Available vacuum Weight without water Tank capacity, approx. Discharge without silencer Discharge with silencer Dimensions and weights may change! Subject to modification.

Compact wet scrubber VDN-TE (standard) VDN-TE (standard) Nominal airflow Available vacuum Weight without water Tank capacity, approx. Discharge without silencer Discharge with silencer Dimensions and weights may change! Subject to modification.

Compact wet scrubber VDN-TE (open system) VDN-TE (open system) Nominal airflow Available vacuum Weight without water Tank capacity, approx. Discharge without silencer Discharge with silencer Dimensions and weights may change! Subject to modification.

Compact wet scrubber VDN-AS (standard) VDN-AS (standard) Nominal airflow Available vacuum Weight without water Tank capacity, approx. Diameter Height Discharge without silencer Discharge with silencer Dimensions and weights may change! Subject to modification.

Compact wet scrubber VDN-AS (open system) VDN-AS (open system) Nominal airflow Available vacuum Weight without water Tank capacity, approx. Diameter Height Discharge without silencer Discharge with silencer Dimensions and weights may change! Subject to modification.

contaminants cannot be deposited inside the dirty air ductwork. It is also possible to operate several VDN-TA units with one common de-sludger. Keller Lufttechnik GmbH + Co. KG © Keller Lufttechnik - all rights reserved. Subject to modifications. Components, i.e., nozzle, mist collector, sludge tub, and fan of the wet scrubber VDN-TA, can be placed in different locations. For instance, the nozzle can be installed behind the source capture point. Because it is continuously rinsed,