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High Temperature Afterfilter

High Temperature Afterfilter
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Specialty Compressed Air Filter Standard Features: The Kaeser High Temperature Afterfilter (HTA) is primarily designed as an afterfilter for desiccant dryers. • Holds large amounts of desiccant fines without plugging • Long cartridge life when installed downstream of heated desiccant dryers • High dust loading capacity - utilizes gravitational settling plus surface and in-depth filtration to remove all desiccant fines 1 micron and larger. • Suitable for temperatures to 450°F • Can be used for any application where large amounts of solid particles are present in dry air. Operation Gravitational Settling Compressed air leaves a desiccant dryer containing dust concentrations typically in the range of up to .05 ppm by weight in heatless type dryers and up to 5 ppm by weight in heated type dryers. Particle size ranges from 200 microns to about 1 micron. As the desiccant laden compressed air enters the filter housing, a reduction in air velocity and a sharp change of direction cause particles in the 200-20 micron range to drop to the bottom of the filter housing. This results in a 30% reduction in the loading on the filter cartridge. Surface Filtration Compressed air then enters the outside of the filter cartridge and flows through a glass fabric filtering cloth with small diameter fibers. Dust collects on the outside of the cloth. As the dust continues to thicken it reaches a point where outer layers of dust shed off the cartridge into the bottom of the housing. In-depth Filtration Air next travels through a multi-layer, indepth filter media which collects the dust penetrating the outside fabric cloth. The first two layers effectively remove all particles down to approximately 3 microns. The third and fourth layers remove all particles down to approximately 1 micron and even remove many submicronic particles. The various layers within the media are glass, wrapped with a fabric cloth, which acts both as surface filter and as a support and stabilizer for the in-depth fiber bed. A final wrap of glass fabric cloth prevents fiber migration into the exiting air stream. High Temperature Afterfilter

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The Air Systems Specialist With over 85 years of experience, Kaeser is the air systems specialist. Our extensive 100,000 square foot facility allows us to provide unequaled product availability. With service centers nationwide and our 24-hour emergency parts guarantee, Kaeser customers can rely on the best after-sales support in the industry. Kaeser stands committed to providing the highest quality air system for your specific compressed air needs. Corporate Headquarters: PO Box 946 Fredericksburg, Virginia 22404 Phone 540-898-5500 Fax 540-898-5520 www.kaeser.com © 2009 Kaeser Compressors,...

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