Effects of different coals on mercury distribution in a 6Â kWth circulating fluidized bed under air and O2/CO2 atmosphere via experiment and thermodynamic equilibrium calculation

According to thermodynamic calculation, five major products associated with mercury would be generated: Hg0, HgO, HgS, HgCl, and HgCl2. Moreover, from 350 °C to 1200 °C, the mole percent of Hg0 arrives its peak. The mole percent of HgO in the flue gas is decreased according to the following order: 40%O2/60%CO2 > 30%O2/70%CO2 > 21%O2/79%CO2 > air.