Analysis of the off-design performance and phased construction of integrated-gasification-combined-cycle power plants: Volume 1, Results and conclusions: Final report. [Steady-state design, off-design and part-load conditions]

Technical Report · Sun Feb 01 04:00:00 EST 1987

OSTI ID:7055324

Eustis, R H; Erbes, M R; Phillips, J N

A sophisticated, computer-based, steady-state simulation model has been developed and used to investigate the off-design and phased-construction performance of integrated coal-gasification combined cycle (IGCC) power plants. The ASPEN process simulator was used as the basic framework for the complete systems model; enhanced FORTRAN models were developed for critical components in the plant where the standard ASPEN models were felt to be inadequate. The effects of ambient temperature and part-load operation on a commercial-scale IGCC plant were investigated and strategies to mitigate the off-design performance penalties were examined. Increased ambient temperatures were found to considerably reduce the plant output; this effect could be mitigated through the use of supplemental firing at the expense of increasing the heat rate. Part-load performance could be considerably improved by shutting down one or more gas turbines to enable the other gas turbine trains to operate nearer to full load. The performance of various initial and final plant configurations for the phased-construction operation of IGCC power plants was examined in detail. It was found that if the plant were optimized for operation as a natural-gas-fired combined cycle plant, several critical components would be undersized when the plant was converted to IGCC operation. Similarly, some components would be oversized if the plant were designed for IGCC operation but operated as a combined cycle plant. Operating strategies and reconstruction techniques to mitigate these performance penalties were also investigated. 19 refs., 31 figs., 19 tabs.

• Research Organization: Stanford Univ., CA (USA). High Temperature Gasdynamics Lab.; Electric Power Research Inst., Palo Alto, CA (USA)
• OSTI ID: 7055324
• Report Number(s): EPRI-AP-5027-Vol.1; ON: TI87920266
• Country of Publication: United States
• Language: English

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AMBIENT TEMPERATURE
COAL GASIFICATION
COMBINED-CYCLE POWER PLANTS
COMPUTERIZED SIMULATION
CONFIGURATION
CONSTRUCTION
DESIGN
GAS TURBINES
GASIFICATION
HEAT RATE
MACHINERY
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RECOMMENDATIONS
SIMULATION
STEADY-STATE CONDITIONS
STEAM TURBINES
TEMPERATURE EFFECTS
TEXACO GASIFICATION PROCESS
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
THERMODYNAMICS
TURBINES
TURBOMACHINERY