DRYER TECHNOLOGY

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Donaldson manufactures a complete line of refrigerated compressed air dryers, absorption and membrane dryers to meet your specific air quality requirements and system solutions. The modularly designed processing ranges offer individual customer solutions, and therefore guarantee the highest efficiency.

For additional information on each series, request a call back

BURAN REFRIGERATION COMPRESSED AIR DRYERS

The Buran Refrigeration Compressed Air Dryers are suitable for volume flows up to 1,650 m³/h. They are available in 4 sizes. Sizes I to III represent a compact plug & play solution with integrated pre- and post-filters in a robust metal housing. Filters and condensate drains are more accessible considerably facilitating installation, maintenance and replacement. The flow-optimized pre- and post-filters with condensate drains in combination with the refrigeration compressed air dryer ensure that a compressed air quality of classes 2-4-2 can be achieved according to ISO 8573-1.

Boreas Refrigeration Compressed Air Dryers with Variopulse

The proprietary design of Boreas heat exchangers incorporates large flow channels for low pressure drop, which translates into low operating costs. A built-in cyclone separator with our Ultramat® zero-loss drain valve allows for the removal of condensed water without wasting any compressed air. The space-saving design brings cooling air in the front and out the top, allowing the unit to be placed next to a wall with other equipment on either side. All Boreas dryers utilise environmentally friendly R-134a refrigerant and are available in either air- cooled or water-cooled configurations. Volume flows of 1.800 to 28.500 m³/h are covered by the Boreas series.

Bora DHP High Inlet Pressure Dryers

Bora DHP dryers can accept compressed air at inlet pressures up to 50 bar in ambient temperatures up to 50 ºC. The maximum inlet temperature is 60 °C. They utilize a two-stage heat exchanger for optimal heat transfer in the air-to-air and in the air-refrigerant head exchanger. Power consumption is reduced as less energy is required than conventional heat exchanger designs. Volume flows of 25 to 5.000 m³/h are covered by the Bora series.

Ultrapac 2000 Superplus / Standard

Heatless Regenerated Absorption Dryers

Ultrapac 2000 heatless desiccant dryers (midi & mini) provide clean and dry air at pressure dew points of -40 ºC and -70 ºC. Their turnkey modular design includes a preinstalled coalescing pre-filter and particulate after-filter. The desiccant is contained in easy-to-replace cartridges. The microprocessor controller alerts the operator of the optimal time to replace filter elements, keeping maintenance and operating costs at a minimum. Information regarding the operating status, fault indications and maintenance intervals can be seen on an easy-to-read text display. A capacity control adjusts the absorption cycles to the actual water inlet load therefore saving regeneration and at the same time reducing operating costs. An Economizer provides on-line information regarding the optimum exchange point for filter elements.

Ultrapac HED / ALD / MSD Heatless Absorption Dryers

Ultrapac Classic HED/ALD/MSD heatless desiccant compressed air dryers benefit from decades of design and fabrication experience by Donaldson. Our dryers are designed to consistently provide quality air with high energy efficiency in a flow range from 5 to 8.750 m³/h at 7 bar g. Operation is fully automatic with a guaranteed outlet dew point at one of three pre-selected settings: HED, –20 °C pdp; ALD, -40 °C pdp; MSD, -70 °C pdp. Each dryer in the 5-1000 m³/h flow range is enclosed in a protective cabinet with easy-to-remove panels. All Ultrapac Classic dryers are supplied with preinstalled pre-filters and after-filters. The coalescing pre-filter is equipped with the Ultramat® zero-loss condensate drain. The compact design of Ultrapac dryers takes up a minimum of floor space.

Oilfreepac 2000 & Oilfreepac OFP Heatless Air Dryers

In addition to having all of the attributes of our Ultrapac 2000 and Ultrapac HED/ALD/MSD heatless dryers, Oilfreepac 2000 (mini & midi) and Ultrapac OFP dryers (sizes 0005-1000 to 1.350-8.750) include integral activated carbon filters for removing hydrocarbon and other vapours for critical applications for which the demand is oil-free and odour-free air.

Ultrapure 2000 (mini & midi) & Ultrapure ALG Heatless Breathing-Air Dryers

In addition to having all of the attributes of our Ultrapac 2000 and Ultrapac HED/ALD/MSD heatless dryers, Oilfreepac 2000 (mini & midi) and Ultrapac OFP dryers (sizes 0005-1000 to 1.350-8.750) include integral activated carbon filters for removing hydrocarbon and other vapours for critical applications for which the demand is oil-free and odour-free air.

Ultrapure ALG20 Breathing-Air Systems

The portable ALG20 breathing air unit is used when the breathing air is contaminated by the working process e.g. during sandblasting. A two-phase respectively three-phase filter stage provides the purification solution. The unit includes a microprocessor-controlled differential gauge and Economizer for optimum filter exchange indication. The standard units include a sub-micro and activated carbon filter. With a flow rate of 60 m³/h, four persons can be provided with breathing air.

Ultradryer HRE, HRG and HRS Heat Regenerated absorption Dryers

The three heat regenerated absorption dryer ranges provide for a multitude of individual customer solutions. Analogue measuring and control units provide maximum operational safety at optimal energy consumption. A wide variety of standard options for e.g. the additional energy saving control Ultraconomy rounds off the offering. The standard rage for dew points up to –40 °C covers units from 375 m³/h to 13.600 m³/h. Larger capacities are available on request.

Ultradryer HRs Heat Regenerated absorption Dryers

The HRS absorption dryer range uses the absorbed moisture of heat caused by the compression process for desorption. The units therefore operate oil free, two-stage compressor without additional energy requirements. The total drying and regeneration cycle takes place under operating pressure. Heat exchange pressure of the desiccant and all other components therefore does not occur. This guarantees a long service life of components. Units with the sizes 600 to 60.000 m³/h have already been built.