Externally heat-regenerative blower purge desiccant air dryer produces dew points as low as -40°F. Twin desiccant beds of activated alumina alternate between drying and regenerating, with regeneration being accomplished with heated ambient air at just above atmospheric pressure. The heated ambient air readily drives adsorbed moisture off of the desiccant preparing it for another adsorption cycle. The moisture-laden regeneration air exhausts to atmosphere during the regeneration process. Blower purge desiccant air dryers can regenerate with little (about 1%) or no process (purge) air loss.

Solid state logic accurately controls inlet and purge valves which direct wet compressed air to the regenerated tower, and heated ambient air to the tower in need of regeneration. The process of adsorption and desorption can be repeated several thousand times before the desiccant must be replaced.

Important features and advantages:

This article comes from kaeser edit released