|
DAV Series
Externally heated regeneration with vacuum drying, complete with pre-filter and after-filter
Vacuum regenerated adsorption drying is the energy efficient solution for higher volumes of compressed air. Dewpoints to -70°C are possible!
Before entering the dryer, a BOGE ‘F’ series micro-filter removes solids and impurities from the compressed air to 0.01 mg/m3. In the drying tower, the desiccant media removes moisture from the air to a dewpoint of -40°C (standard models).
The parallel tower regenerates the wet desiccant bed. First it de-pressurises to atmosphere, simultaneously the vacuum pump begins to draw ambient air, that is pre-heated on entry, through the wet desiccant to complete the regeneration process.
The advantages of using the BOGE DAV Adsorption Dryer
- Energy efficient system
Savings of up to 25% compared to conventional systems
- 2-stage drying
Optimised flow distribution through media bed
Self cleaning media reduces Δp and increases moisture separation
- Low regeneration temperature
Vacuum regeneration ensures energy efficient moisture removal at lower temperatures than traditional heat regeneration
- Vacuum cooling
After drying the media the heater switches off and the vacuum pump sucks ambient air through the bed to cool it
- Pressure equalisation on wet side
Regeneration takes place at atmospheric pressure. Venting tower is therefore total purge loss
- Consistent pressure dewpoint in operation
Because ambient air drawn in from the drying process
- Constant pressure dewpoint at changeover
Because compressed air re-pressurises dry tower
- Pressure dewpoints to -70 °C
Possible as well as the standard -25°C or -40°C
- Function display
For pressure, temperature, heater operation, vacuum pump and changeover
- Alternative energy
Regeneration using steam, hot water and other is available as an option
- Modular options:
Purge air by-pass, thermistor controlled heaters, frequency controlled vacuum pumps |