Integrated gasification/combined-cycle power plant at Sears Island, Maine: feasibility study. Summary report
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. This Summary is published as one volume for executive review. The full report consists of two volumes detailing the complete study.
- Research Organization:
- Central Maine Power Co., Augusta (USA)
- DOE Contract Number:
- FG01-80RA50339
- OSTI ID:
- 6072382
- Report Number(s):
- DOE/RA/50339-1387-Exec.Summ.; ON: DE83010604
- Resource Relation:
- Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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