Desiccant dryers

Atlas Copco has launched three energy-efficient desiccant air dryer ranges designed to ensure a reliable source of high quality, dry compressed air is available to meet the needs of the most demanding applications. The new dryer ranges are particularly suitable for industries such as electronics, food and beverage, pharmaceuticals and oil and gas process operations, where using the highest quality compressed air is vital. The three air dryer ranges use desiccants to adsorb moisture from the compressed air, therefore protecting production process equipment and helping to maintain end product quality. The new products include two ranges of heatless desiccant dryers: the CD25+ … 145+ and the CD110+ … 300+ ranges are based on a simple compact design and working principle to guarantee reliability even in the harshest operational environments. The third new range, the heat-reactivated blower purge dryers BD100+ … 300+, is built for energy-efficiency and endurance. By using heated ambient air for regeneration, this dryer range keeps energy costs to a minimum because there is a lower incidence of purge air losses. Energy efficiency is achieved through low pressure drops and delayed dryer cycles – the optional feature of dewpoint dependent purge control minimises purge air losses by only switching over the unit’s desiccant towers when they are fully saturated with moisture, rather than on a fixed time interval. High performance and a constant pressure dewpoint - even at full load - is guaranteed under any operating condition. By monitoring all parameters of the desiccant air dryers with the Elektronikon Controller (not included on the CD25+ … 145+ units), a constant pressure dewpoint down to -70°C is guaranteed, even at 100% load. This ensures absolute dry air for vulnerable applications, such as automatic pharmaceutical processes that require the highest level of reliability 24/7. Edited by Constanze Schmitz