Retrofit utility power plant to combined cycle operation

Conference · Fri Jan 01 04:00:00 EST 1988 · Proceedings of the American Power Conference; (USA)

OSTI ID:7229209

Gelbar, D E; Akel, H R; Liljedahl, G N ^[1]

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1. Combustion Engineering, Inc., Windsor, CT (USA)

There are two generic retrofit arrangements which depend on whether or not the gas turbine exhaust is used for combustion air in the existing power plant boiler. The arrangements detailed in this document are called windbox repowering and secondary cooler repowering. The physical changes required and the resulting performance of three combined cycle retrofit arrangements and the operational and economic issues for selecting these arrangements will also be discussed. The authors illustration a typical plant retrofit for combined cycle operation. The following 250 MW steam plant was selected. The steam generator is a coal fired natural circulation with a maximum continuous rating (MCR) feedwater flow of 2,015,000 lbs/hr at 474 deg.F. The boiler delivers main steam at of 1005 deg.F at 1990 psig. The reheat flow of 1,791,000 lbs/hr at 680 deg.F and 525 psig is raised to 1005 deg.F at 490 psig. This tangentially fired boiler is equipped with five pulverizers and two air preheaters. The steam turbine/generator has a rated capacity of 250,000 KW.

• OSTI ID: 7229209
• Report Number(s): CONF-880403--
• Conference Information: Journal Name: Proceedings of the American Power Conference; (USA) Journal Volume: 50
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200102* -- Fossil-Fueled Power Plants-- Power Cycles
200103 -- Fossil-Fueled Power Plants-- Waste-Fueled Systems
200105 -- Fossil-Fueled Power Plants-- Heat Utilization
200600 -- Fossil-Fueled Power Plants-- Economic
Industrial
& Business Aspects-- (1990-)
BOILERS
CARBONACEOUS MATERIALS
CHEMICAL REACTION KINETICS
COAL
COMBINED-CYCLE POWER PLANTS
COMBUSTION KINETICS
DESIGN
ECONOMICS
ENERGY RECOVERY
ENERGY SOURCES
EXHAUST GASES
FLUIDS
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FUELS
GAS TURBINES
GASEOUS WASTES
GASES
HEAT RECOVERY
KINETICS
MACHINERY
MATERIALS
OPERATION
POWER PLANTS
PULVERIZED FUELS
REACTION KINETICS
RECOVERY
RETROFITTING
STEAM GENERATORS
THERMAL POWER PLANTS
TURBINES
TURBOMACHINERY
VAPOR GENERATORS
WASTES