Alstom Technology Limited

Gregg Robert Doulé

Michael G Varner

Kelly L Barger

One aspect of the invention relates to a method for removing contaminants from a flue gas stream (). The method includes: removing fly ash from a flue gas stream () utilizing a particle collector (); contacting the flue gas stream with an alkaline reagent in a wet scrubber (); discharging a purge liquid () from the wet scrubber (); combining at least a portion of the purge liquid () with at least a portion of the fly ash () to form moistened fly ash (); and injecting at least a portion of the moistened fly ash () into the flue gas stream () upstream of the particle collector (), whereby the moistened fly ash () removes at least a portion of contaminants present in the flue gas stream ().

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Knoxville, TN, United States of America

Gregg Robert Doulé