Description
Compressed air drying on a large scale – with maximum efficiency and operational reliability
Series DPS 120-630 adsorption dryers can dry the compressed air to a pressure dew-point of -25°C, -40°C or down to -70°C. In doing so, they create dry, thoroughly under-saturated compressed air in which no further condensation takes place and thus no formation of liquid water can occur at compressed air temperatures above the pressure dew-point. Additionally a separate downstream activated carbon oil vapour adsorber can be provided (see DSS series).
Series DPS 120-630 adsorption dryers consist of welded and coated steel vessels, which are pressure rated up to 11 bar and generously sized, zinc-coated piping and classic individual valves for low differential pressures in this performance range. They feature a pneumatically controlled 3/2-way ball valve with full cross section flow as well as pneumatically controlled angle valves from well-known manufacturers. The valves are individually controlled with a time delay which means there is no overlap. The dryers are operated with a 2-layer desiccant bed, consisting of 20% water resistant silica gel WS and 80% high-grade drying molecular sieve. Generously sized silencers reduce noise emission, optionally down to values of 75 dB(A).
Series DPS 120-630 adsorption dryers are fitted with pressure gauges as standard. Pre-filters and after-filters are optionally avail-able. The standard C1 control unit with plain text display and integrated operating elements controls all operating modes for heat-less adsorption dryers and enables both independent operation of the dryer as well as integration into the control system of an existing compressed air station. In conjunction with an optional dew-point sensor, the adsorption dryer can be operated depending on the load in variable cycle mode and thus typical energy savings of 20-70% can be achieved.
