Noise Sources and Noise Control Measures for Flue Gas Cleaning Plants

摘要

For modern large-scale power plants, efficient noise control measures play an increasingly important role. This can mostly be ascribed to the fact that the noise requirements for new power plants become more and more stringent, which holds especially true for the noise limits at the points of interest in the neighbourhood of the plants, particularly at existing sites undergoing upgrading and/or extension. For coal-fired power plants the components of the flue gas cleaning plant (FGC) are the main noise sources, especially as FGCs are typically located outdoors without noise-reducing enclosure. Besides direct sound radiation from fans and pumps, sound from these sources is also propagating inside pipes and ducts and is eventually radiated indirectly via the -often large - surfaces of these structures. In particular, the flue gas ducts play an important role for the overall noise emissions of an FGC.