Economic evaluation of GCC power plants based on the STEAG combined-cycle design and comparison with a US combined-cycle-based system. Final report

Technical Report · Sat Dec 01 04:00:00 EST 1979

DOI:https://doi.org/10.2172/5653611· OSTI ID:5653611

Coleman, B. S.; Crawford, C. D.; Joiner, J. R.

The results of preliminary process design and economic screening studies of four integrated gasification-combined-cycle (GCC) power plant systems are presented. Three of these GCC systems were based on the pressurized boiler combined-cycle design developed and demonstrated by STEAG in West Germany. As a basis for comparison, the fourth GCC system utilized a typical US combined-cycle configuration as designed by United Technologies Corporation. All of the combined-cycle designs presented used commercially available components, including the gas turbines. The gasification processes used in the three STEAG-based GCC systems included the air-blown Lurgi dry ash process, the oxygen-blown Texaco entrained-bed process, and the air-blown Texaco entrained-bed process. The US combined-cycle-based GCC system also utilized the oxygen-blown Texaco process. All evaluations were based on complete ''grass roots'' facilities sized to conform to a baseload power plant of approximately 1000 MW capacity. The US combined-cycle-based GCC system yielded both the highest overall thermal efficiency (34.8%) and the lowest first-year busbar cost (38.9 mills/kWh). It was concluded that the three specific STEAG-based GCC systems provide no incentive for their development and use by the US electric power industry. Of these three STEAG-based systems, the design which employed the oxygen-blown Texaco gasification process showed the most potential for improvement. It was also concluded that both the results and the suggested improvements in the STEAG-based designs provide no evidence to suggest that the STEAG combined cycle is superior to the US combined cycle in a GCC system application.

• Research Organization: Fluor Engineers and Constructors, Inc., Irvine, CA (USA)
• OSTI ID: 5653611
• Report Number(s): EPRI-AF-1288
• Country of Publication: United States
• Language: English

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01 COAL, LIGNITE, AND PEAT
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CAPACITY
COAL GASIFICATION
COAL GASIFICATION PLANTS
COMBINED-CYCLE POWER PLANTS
COMPARATIVE EVALUATIONS
DEMONSTRATION PROGRAMS
DESIGN
ECONOMIC ANALYSIS
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EFFICIENCY
ENERGY BALANCE
EUROPE
FEDERAL REPUBLIC OF GERMANY
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INDUSTRIAL PLANTS
LURGI PROCESS
MACHINERY
NORTH AMERICA
OPERATION
POWER PLANTS
TEXACO GASIFICATION PROCESS
THERMAL EFFICIENCY
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
TURBINES
TURBOMACHINERY
USA