Boge DAV-2 adsorption dryers

The adsorption dryers in the Boge DAV-2 range with high-performance pre-filters and after filters can achieve flow rates of 450–7302 m³/h at a maximum operating pressure of 11 bar. They come as standard fitted with a thermally insulating cover and protection against accidental contact. The thermal insulation reduces heat losses, resulting in improved operating safety and achieving energy savings of around 4%. Specific features include an updated PLC control with 7″ touchscreen display for permanent monitoring, analysis and evaluation of all relevant parameters. The dewpoint control system permits switching between the receivers where necessary, meaning the drying phase can be lengthened and energy consumption reduced.

The dryer can be controlled via a range of different interfaces (Modbus, Profibus, etc) and the USB interface on the switch cabinet allows software to be updated or report logs to be downloaded for subsequent analysis. To simplify transport and installation, the height of the receivers has been reduced and their diameter increased. This has made it possible to reduce the differential pressure, and the low height means the dryer can be installed in a standard container.

Adsorption dryers are sometimes referred to as vacuum regeneration dryers, as ambient air is drawn over the desiccant bed via an external heating element with the help of a vacuum pump during the regeneration process. Unlike heatless adsorption dryers, which use ready dried process air to regenerate the desiccant, the ‘zero purge’ technology of the series requires nothing more than ambient air.