Abstract
Conventional fabric filters are limited to operating temperatures lower than 500° F (260° C). Filtration at higher temperature can offer several advantages: it can eliminate the need and expense for equipment to cool a gas stream before filtration and to cleanup dilution streams, it can reduce maintenance costs and extend the lifetime of process equipment by avoiding dew points of corrosive species, and it can increase overall operating efficiency by recovering energy or valuable by-products.
NextelTM ceramic fiber filter bags have demonstrated operation up to 1400° F (760° C). The bags are made from continuous polycrystalline metal oxide fibers typically 10–12 microns in diameter. The fibers are produced from a chemical solution thereby providing well controlled composition and properties. They are processed into engineered yarns and converted into a variety of woven and braided forms for industrial applications at temperatures up to 2500° F (1370° C).
The high temperature filter bags are woven as seamless tubing and further processed to enhance their filtration properties. First tested in 1981, they have undergone thousands of hours of field evaluation. These evaluations, mechanical and filtration properties, and performance in a variety of commercial applications are reviewed.
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© 1993 Springer Science+Business Media Dordrecht
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Gennrich, T.J. (1993). High Temperature Ceramic Fiber Filter Bags. In: Clift, R., Seville, J.P.K. (eds) Gas Cleaning at High Temperatures. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2172-9_20
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DOI: https://doi.org/10.1007/978-94-011-2172-9_20
Publisher Name: Springer, Dordrecht
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