Abstract
The behavior and retention of mercury in oxy-fuel combustion is summarized. The effect of mercury on oxy-fuel CO2 compression unit is discussed. The thermodynamic modeling results showed that Hg0 is the dominant species in oxy-fuel combustion. The mercury retention on fly ash particles depended on temperature, burnout, and particle sizes. The field measurements showed that higher concentrations of gas-phase mercury (Hg0) were in oxy-fuel combustion flue gas. The conversion of Hg0 to particulate-associated mercury (Hgp) was enhanced in oxy-fuel combustion. Different mercury removal technologies were developed in oxy-fuel flue gas atmospheres. The high concentration of SO2/SO3 and H2O in oxy-fuel combustion atmospheres could significantly affect the Hg0 adsorption and oxidation behaviors. The presence of Hg in flue gas was capable of attacking the aluminum materials in the CO2 purification and compression units.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
