Emissions of SO₃ from a Coal-Fired Fluidized Bed under Normal and Staged Combustion

Table 2

Chemical composition of Ballidone and Penrith limestone.

	Ballidone	Penrith
CaCO3	97.8%	95.6%
CaO	55.5%	52.5%
CO2 (at 1000°C)	42.3%	43.1%
SiO2	1.9%	2.8%
Fe2O3	0.09%	0.4%
TiO2·Al2O3	0.08%	0.8%
MnO	0.3%	0.2%