Abstract
Oxy-fuel combustion is the ideal option among low carbon combustion technologies for post CO2 capture. Mercury in CO2-enriched flue gas must be removed efficiently because mercury can cause metal embrittlement and aluminum corrosion during post CO2 processing. To date, there is little research that has reported mercury speciation, emissions, and removal from the oxy-fuel combustion systems. Therefore, a comprehensive review of mercury chemistry and mercury removal from the oxy-fuel combustion system is necessary. This paper reviews the formation, emission, and removal of mercury from oxy-fuel combustion systems. The aim is to evaluate and summarize the fate of mercury and the status of mercury-control technologies for the oxy-fuel combustion process. It is recommended that the modification of existing ESP, SCR, or FGD systems to enhance mercury control should be developed. The investigation of mercury capture by activated carbon or other low-cost sorbents requires further research to evaluate its suitabil...
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