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| Ammonia is an emerging challenge in the ash marketing industry.
As electric utilities move to implement stringent new air pollution
controls, many are treating boiler exhaust gases with ammonia to
remove nitrous oxides. Some of the unreacted ammonia is deposited
on fly ash particles. When ammonia contaminated fly ash is wetted
as part of a concrete mixture, the gas is released, exposing concrete
workers to varying levels of ammonia. Headwaters Energy Services' new technology uses
a chemical reagent to mitigate ammonia effects. When water is added to the concrete mix containing ammoniated fly ash, the reagent converts ammonia to harmless compounds. The treatment reagent can be added and blended with the dry fly ash at any point between the fly ash collection system at the power plant and final delivery to the ready mixed concrete producer. Reagent dosage rates depend on ammonia concentration. Reagents can also be added directly to the concrete mix, if desired. For more information, please contact us. |
