Desiccant Air Dryer (Heatless Regeneration)
Twin towers alternate adsorption and regeneration for pressure dew points of −40 °C or −70 °C, serving instrument air and high-cleanliness duties.
Desiccant Air Dryer (Heatless Regeneration)
Twin towers alternate adsorption and regeneration for pressure dew points of −40 °C or −70 °C, serving instrument air and high-cleanliness duties.
Overview
A desiccant dryer removes moisture on activated alumina or molecular sieve, with two towers alternating duty and regeneration for continuous low-dew-point output. Heatless designs regenerate the off-line tower by purging with a portion of dried air at reduced pressure — simple and needing no external heat. Where dew-point demands are extreme or purge loss matters, heated-purge or blower-purge options can be evaluated. Instrument air, nitrogen-plant pre-treatment and low-temperature piping typically need below −40 °C.
Key features
−40 °C standard, −70 °C available for deep drying.
A/B alternation keeps output uninterrupted.
Simple design with no external heat source.
Protects instruments, nitrogen adsorbent and cold piping.
Model data
Models in this family
| Type | Desiccant, heatless regeneration |
| Layout | Twin tower A/B alternating |
| Pressure dew point | −40 °C standard, −70 °C optional |
| Adsorbent | Activated alumina / molecular sieve |
| Purge loss | approx. 10–15% |
| Duty | Instrument air, nitrogen pre-treatment, cold piping |
