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During adsorption the desiccant accumulates the moisture contained in the compressed air or gas. FK is only using desiccants of the molecular sieve type with very high adsorption capacities. These desiccants are distinguished by a long service life even at high inlet temperatures and low pressure dew points. Regeneration is carried out in counter flow with respect to the adsorption flow direction. A partial flow of the dried compressed air is depressurized to atmospheric pressure and than passed through the desiccant bed which is to be regenerated. The moisture retained during the adsorption phase is removed with partial flow of dry purge air.

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- Reference list vacuum- and heat generated dryers (PDF)