Reduction of Rapping Losses to Improve ESP Performance
The need to reduce emissions of particulate matter, NOx, SOx, VOC, and most recently CO2 to address Global Wanning,is becoming a worldwide concern. Electrostatic Precipitators (ESPs) have been predominantly used for many years to collect particulate matter from the gas stream of power plants and industrial processes. Unfortunately when the collecting electrodes are cleaned a portion of the precipitated material typically reenters the gas stream and exits the ESP. The amount of reentrainment losses from ESPs may not be suitable to meet lower emissions limits for particulate matter in the future.Alstom Power Systems (APS) has developed a new technique to reduce the rapping losses from an ESP. This paper presents the key aspects of design and collected information from the current operating units in Guatemala and Finland. The new design is a cost effective approach to address this well-known problem for ESPs. With future development and refinement of the technology it may be possible to reduce the particulate emissions after an ESP to the Near Zero Emissions target being discussed by regulators from e.g. coal-fired power plants.
ESP rapping reentrainment power plant dust emissions pressure drop gas distribution flow modeling
Stephen L.Francis Andreas B(a)ck Per Johansson
Alstom Power Inc.,1409 Centerpoint Blvd.,Knoxville,TN 37932,USA Alstom Power Sweden AB,P.O.Box 1233,SE-351 12,V(a)xj(o),Sweden
国际会议
11th International Conference on Electrostatic Precipitation(第11届国际电除尘学术会议)
杭州
英文
45-49
2008-10-15（万方平台首次上网日期，不代表论文的发表时间）