market-based advanced coal power systems final report - National ...

Market-Based Advanced Coal Power Systems
The 1990 CAAA imposed a two-phase capping of SO2 emissions on a nationwide basis. For a
new greenfield plant, the reduction of SO2 emissions that would be required depends on
possessions or availability of SO2 allowances by the utility, and on local site conditions. In many
cases, Prevention of Significant Deterioration (PSD) Regulations will apply, requiring that Best
Available Control Technology (BACT) be used. BACT is applied separately for each site, and
results in different values for varying sites. In general, the emission limits set by BACT will be
significantly lower than NSPS limits. The ranges specified in Table 3.1-3 will cover most cases.
Table 3.1-3
EMISSION LIMITS SET BY BACT
SOx 92 to 95 percent removal
NOx 0.2 to 0.45 lb/10 6 Btu
Particulates 0.015 to 0.03 lb/10 6 Btu
Visibility 10 to 20 percent opacity
For this study, plant emissions are capped at values shown in Table 3.1-4.
Table 3.1-4
PULVERIZED COAL-FIRED BOILER REFERENCE PLANT EMISSIONS
1b/10 6 Btu Tons/year
65%
Values at Design Condition
(65% and 85% Capacity Factor)
Tons/year
85%
lb/MWh
SO2 0.34 3,534 4,621 3.13
NOx 0.45 4,622 6,045 4.09
Particulates 0.03 305 400 0.272
CO2 203.1 2,086,106 2,727,985 1,846
BACT is not applied to the plant described in this report. This report is a base, reference plant
design; therefore, the emission limits are set at the industry standard.
3.1-7 December 1998