The scope of application for compressed air dried by adsorption dryers are generally outdoor installations that are at risk of frost and compressed air applications with very high requirements in terms of the degree of dryness, such as process air in the food, electronic, pharmaceutical, chemical, measuring and process technology industries. Adsorption dryers are used both in centralized and decentralized compressed air treatment due to their unrestricted scalability.
Adsorption dryers remove the moisture directly from the compressed air. The desiccant used in adsorption dryers binds water molecules and completely separates the moisture from the compressed air. Pressure dew-points down to -70°C can be achieved by using adsorption dryers.
Adsorption dryers are suitable for continuous operation and are available for all volume flow and pressure ranges. Heatless regenerated adsorption dryers are normally used for pressure dew-points down to -40°C. For lower pressure dew-points see heat regenerated adsorption dryers.
For higher volume flows, operating pressures and larger connections see special engineering.
Pressure vessels MADE IN GERMANY | High quality coatings
Conformity to EU directive 2014/68/EU | Further international certifications
Molecular sieve desiccant in loose filling | 2-layer desiccant filling
Flow distributors at inlet and outlet | Low dust flow at outlet
Compact valve blocks | C1 control unit with plain text display
and many more …
Design and Function
Adsorption dryers consist of two pressure vessels, which are both filled with desiccant and are alternately operated via switch-over.
The compressed air that needs to be dried flows through a vessel where the moisture is thoroughly removed by the desiccant (adsorption). At the same time, the moisture stored in the desiccant in the second vessel is removed (regeneration). If the desiccant in the vessel in which adsorption takes place is saturated with moisture, the vessels are switched and the process starts again.
One complete run of adsorption and regeneration in a vessel is called a cycle, and the time required is the cycle time.