Where and why do we use Heatless Adsorption Dryers?

The DC series self-activating, heatless dryers, DC 121-134 remove moisture from compressed air. They contain two pressure vessels or towers, each containing a quantity of desiccant. One tower dries the air, while the other is being reactivated.

The 'heatless' principle of regeneration is based on the physical property of the desiccant, given as Delsorb as one of its kind in Asia and approved by all major consultants, which liberates the adsorbed water vapour, if air with a low water vapour pressure is passed through it.

For this, a percentage of dried compressed air is expanded, as a result of which it contains little water vapour per volume. This purge air flowing through the adsorber helps liberate water vapour from the desiccant.

The heat of adsorption during drying period causes a temperature rise of the desiccant which stimulates the liberating of water vapour and so the regeneration.

The vapour adsorbed during the drying cycle will be desorbed and discharged to the atmosphere during the reactivating cycle.