Coal fired flue gas treatment and process

Details Coal fired flue gas treatment and process Coal fired flue gas treatment and process

2007-10-09

2010-02-02

Vanoy, Timothy C (Department: 1793)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

C423S225000, C423S235000, C423S243010, C423S243080, C423S215500, C106S705000, C106SDIG002

Reexamination Certificate

active

07655202

ABSTRACT:
A process for treating flue gas containing fly ash and carbon dioxide is disclosed. In the process, carbon dioxide and fly ash are contacted with an aqueous metal hydroxide solution to convert carbon dioxide into a metal carbonate, and wherein the metal carbonate and the metal hydroxide cause the fly ash to undergo a geopolymerization reaction and form a geopolymerized fly ash. The geopolymerized fly ash is recovered for disposal or for further use, such as a concrete additive.

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