Abstract
Flue gas conditioning (FGC) systems are an effective option for improving the performance of electrostatic precipitators (ESP). The effect of FGC on the cohesive forces in ash layers during electrostatic precipitation has been studied for a complete range of ash compositions. Cohesive forces have been determined by means of a laboratory apparatus specifically developed within this research work. SO3 and NH3 have been tested as conditioning agents.It is concluded that the effect of injecting NH3 on the cohesive properties is variable, and depends on the type of ash. The mechanism of NH3 adsorption, influenced by the carbon content in ash, appears to play an important role. On the other hand, SO3 addition involves the reduction of the cohesive forces in all the cases tested. © 2015 American Institute of Chemical Engineers Environ Prog, 34: 1379–1383, 2015
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