Key Factors Affecting
Hg Capture
Coal Burned
in Industrial Boilers
Coal data reported on dry basis. About 15% of units use coal blends.
“Control of Mercury Emissions from
Coal Fired Electric Utility Boilers: An
Update”, U.S. Environmental
Protection Agency, Office of Research and Development, Research Triangle Park, NC, February 18, 2005.
Coal
Type
Hg
ppm
Cl
ppm
S
Wt. %
Ash
Wt. %
HHV
BTU/lb
Bitum.
0.11
(0.04 - 0.28)
1033
(48 – 2730)
1.69
(0.55 – 4.1)
11.1
(5.4 – 27.3)
13,203
(8646 – 14014)
Sub-Bit.
0.07
(0.02 – 0.14)
158
(51 – 1143)
0.5
(0.22 – 1.16)
8.0
(4.7 – 26.7)
12,005
(8606 – 13168)
Lignite
>0.11
188
(133 – 233)
1.30
0.8 – 1.42
19.4
12.2 – 24.6
10,028
(9487 – 10702)
