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EPA FABRIC FILTRATION STUDIES: 1. PERFORMANCE OF NON-WOVEN NYLON FILTER BAGS
Citation:
Turner, J. EPA FABRIC FILTRATION STUDIES: 1. PERFORMANCE OF NON-WOVEN NYLON FILTER BAGS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/2-76/168a.
Description:
The purpose of these investigations was to evaluate the potential of various new fabrics as baghouse filters and to obtain data for their use, by the fabric filtration community. The testing consisted of simulating a baghouse operation in a carefully controlled laboratory setting that allowed measurement and comparison of bag performance and endurance. The simulation discussed in this paper covered only a very narrow range of operating conditions: (1) Redispersed, classified flyash (mass median diameter between 5 and 6 micrometers) entrained in air was the only dust used. (2) All filtering was done at room temperature. (3) Humidity varied from about 20 to 40 percent for most of the testing. (4) The air to cloth ratio of nylon 66 bags varied between 4.3 and 8.7 fpm. (5) The dust loading varied between 1.5 and 3 grains/cu ft. (6) The test cycle consisted of a constant 20 minute feed, 1 minute delay, 2 minute shake cleaning, and 1 minute delay, regardless of the pressure drop across the bag. Extreme caution should be used in extrapolating the results reported here to the substantially different conditions that occur in all field applications. The usefulness of the present results is primarily as an initial screen of candidate fabrics for baghouse applications.