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PARTICULATE CONTROL HIGHLIGHTS: RESEARCH ON FABRIC FILTRATION TECHNOLOGY
Citation:
Dennis, R. AND N. Surprenant. PARTICULATE CONTROL HIGHLIGHTS: RESEARCH ON FABRIC FILTRATION TECHNOLOGY. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/8-78/005D.
Description:
The report highlights significant developments in fabric filtration technology. It reviews results of several field and laboratory studies performed over the last 10 years, by or under the sponsorship of the EPA, so that the reader may be better able to assess filtration equipment capabilities and limitations. A background of fabric filter design and operational concepts is followed by a sampling of actual field performance with various coal fly ash aerosols and a description of an operational mobile pilot filter system that is used to facilitate the selection of operating parameters, fabric type, and method of fabric cleaning. Fabric weave and constituents are discussed with respect to their bearing on working temperatures, method of cleaning, fabric life, pressure loss, and dust retention. Attention is also called to the impact of pinhole or pore leakage on collection efficiency and effluent size properties. The pros and cons of increasing air-to-cloth ratio (face velocities) to reduce fabric and other capital costs are compared with attendant disadvantages of increased power needs and higher emission rates. Pilot and bench scale tests show that effluent concentrations increase very rapidly with face velocity. Recently developed modeling concepts that provide realistic predictions of glass fiber performance with coal fly ash are reviewed.