Protecting your systems and processes
Desiccant air dryers provide the ultimate in energy efficiency and supply extremely low dew points
For a broad range of industrial applications
Complete range of desiccant air dryers for a broad variety of industries and applications with dew points down to -70°C / -100° F
Protect your production
Our patented Elektronikon control and monitoring system takes continuous care of your desiccant air dryers to ensure optimal productivity and efficiency at your site
How does a desiccant air dryer work?
Twin tower desiccant air dryer working principle
Adsorption dryers are used when the compressed air application requires a pressure dew point below 0°. The regenerative desiccant dryers consist of two pressure vessels. Both vessels are filled with desiccant. One vessel is removing moisture from the compressed air.
Wet air passes directly through the desiccant bed which adsorbs the moisture. When this vessel is saturated with moisture the valves will switch and lead the air to the other standby vessel. During adsorption in the other vessel, the first vessel will be regenerated. It's a cyclic process.
The desiccant medium has a finite capacity for adsorbing moisture before it must be dried out, or regenerated. To do this, the tower containing saturated desiccant medium is depressurized and the accumulated water is driven off.
How this happens depends on the type of dryer.
Heatless dryers use only compressed air as a purge
Blower purge dryers use a combination of air from an external blower, heat, and minimal compressed air