Integrated gasification combined-cycle power plant at Sears Island, Maine: feasibility study. Final report. Volume I. [Sears Island, Maine]

Technical Report · Wed Mar 30 04:00:00 EST 1983

OSTI ID:6406923

This report presents the results of a feasibility study to evaluate the use of medium Btu synthesis gas, produced from high-sulfur coal, in an Integrated Gasification Combined Cycle (IGCC) power plant, as an alternative to a conventional pulverized coal plant with flue gas scrubbers presently planned for the Sears Island, Maine site of Central Maine Power Company. The process configuration is based on the oxygen-blown Texaco Coal Gasification Process and a General Electric Combined Cycle power plant. The plant design includes a 5000 ton per day oxygen plant, four 1200 tons per day gasification trains plus one spare to reduce risk, four gas turbine-generators with heat recovery steam generators, and a reheat steam turbine generator. Plant output at ISO (59/sup 0/F) conditions is 524 MW net. The report includes preliminary design and arrangement drawings, a detailed plant description, detailed cost information, performance data, schedules, and an extensive evaluation of technical, economic, and environmental results. The results of the study indicate that the IGCC power plant is still a rapidly evolving technology. Before Central Maine Power Company can commit to construction of such a plant, several issues raised in the study need to be addressed. These issues deal with refinements in cycle performance, demonstration of various major components, and construction schedule, among others. The IGCC Plant does have less environmental impact than a comparably sized conventional coal plant, while using a high sulfur, high ash, less expensive coal. The life-of-plant levelized busbar cost for the IGCC Plant is estimated to be 5% lower than for the conventional coal-fired plant, although the initial capital cost is approximately 60% higher. Other cycle designs were identified which have the potential for improving plant economics.

• Research Organization: Central Maine Power Co., Augusta (USA)
• DOE Contract Number: FG01-80RA50339
• OSTI ID: 6406923
• Report Number(s): DOE/RA/50339-1387-Vol.1; ON: DE83010919
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
20 FOSSIL-FUELED POWER PLANTS
200102 -- Fossil-Fueled Power Plants-- Power Cycles
BOILERS
BY-PRODUCTS
CAPITALIZED COST
CLAUS PROCESS
COAL GASIFICATION
COMBINED-CYCLE POWER PLANTS
COMPARATIVE EVALUATIONS
CONSTRAINTS
CONTROL ROOMS
CONTROL SYSTEMS
COST
DATA
DIAGRAMS
ECONOMICS
ELECTRIC POWER
ENERGY RECOVERY
ENGINEERING
EQUIPMENT
FEASIBILITY STUDIES
FEEDWATER
FLOWSHEETS
FLUIDS
FOSSIL-FUEL POWER PLANTS
FUEL GAS
FUELS
GAS FUELS
GAS TURBINES
GASES
GASIFICATION
HEAT RECOVERY
HYDROGEN COMPOUNDS
INDUSTRIAL PLANTS
INFORMATION
INTERMEDIATE BTU GAS
LIQUID WASTES
MACHINERY
MEASURING INSTRUMENTS
NUMERICAL DATA
OXYGEN COMPOUNDS
OXYGEN PLANTS
POLLUTION CONTROL EQUIPMENT
POWER
POWER PLANTS
RECOVERY
SCOT PROCESS
SCRUBBERS
SELEXOL PROCESS
START-UP
STEAM TURBINES
TEXACO GASIFICATION PROCESS
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
TURBINES
TURBOMACHINERY
WASTE WATER
WASTES
WATER
WATER TREATMENT