Table 3.5 Air Pollutants from a 1250-MW Coal Facility Table 3.6 Solid and Sludge Wastes from a 1250-MW Coal Facility, 70% Capacity Factor 3.2.4 Coal-Gasification/Combined-Cycle Power Plant The coal-gasification/combined-cycle plant is an integrated system whose primary components are a gasifier, an open-cycle gas turbine, and a Rankine bottoming cycle. The basic plant is modeled after a 579-MW plant described in the ECAS study;14 the design was augmented with information from the EPRI Preliminary Design study.15 The plant design was scaled to 1250 MW net plant output (2 units at 625 MW each). The reference facility is fired with eastern high-sulfur bituminous coal with heat content of 25,646 kJ/kg (11,026 Btu/lb). The overall net plant efficiency, which accounts for in-plant auxiliary steam and electrical consumption, is 38.5%. Figure 3.7 displays the major pieces of plant equipment in a simplified cycle schematic and energy flow diagram of the reference design.
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