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

Section 3.1, PC-Fired Subcritical Plant
3.1 PULVERIZED COAL-FIRED SUBCRITICAL PLANT - 400 MWe
3.1.1 Design Basis
The design basis of this pulverized coal plant is a nominal 400 MWe subcritical cycle. Support
facilities are all encompassing, including rail spur (within the plant fence line), coal handling,
(including receiving, crushing, storing, and drying), limestone handling (including receiving,
crushing, storing, and feeding), solid waste disposal, flue gas desulfurization, wastewater
treatment and equipment necessary for an efficient, available, and completely operable facility.
The plant is designed using components suitable for a 30-year life, with provision for periodic
maintenance and replacement of critical parts. The plant design and cost estimate are based on
equipment manufactured in industrialized nations (United States, Germany, England, etc.) with
the standard manufacturer’s warranties. The design is based on a referenced design approach to
engineering and construction. All equipment is designed and procured in accordance with the
latest applicable codes and standards. ASME, ANSI, IEEE, NFPA, CAA, state regulations, and
OSHA codes are all adhered to in the design.
3.1.2 Heat and Mass Balance
The steam power cycle is shown schematically in the 100 percent load Heat and Mass Balance
diagram (Figure 3.1-1). The diagram shows state points at each of the major components for the
conventional plant. Overall performance is summarized in Table 3.1-1, which includes auxiliary
power requirements.
The plant uses a 2400 psig/1000°F/1000°F single reheat steam power cycle. The high-pressure
(HP) turbine uses 2,734,000 lb/h steam at 2415 psia and 1000°F. The cold reheat flow is
2,425,653 lb/h of steam at 604 psia and 635°F, which is reheated to 1000°F before entering the
intermediate-pressure (IP) turbine section.
December 1998 3.1-2