Gas turbine effects on integrated-gasification-combined-cycle power plant operations

Technical Report · Thu Mar 01 04:00:00 EST 1990

OSTI ID:7248049

Eustis, F H ^[1]

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1. Stanford Univ., CA (USA). High Temperature Gasdynamics Lab.

This study used detailed thermodynamic modeling procedures to assess the influence of different gas turbine characteristics and steam cycle conditions on the design and off-design performance of integrated gasification-combined-cycle (IGCC) power plants. IGCC plant simulation models for a base case plant with Texaco gasifiers and both radiant and convective syngas coolers were developed, and three different types of gas turbines were evaluated as well as non-reheat and reheat steam systems. Results indicated that improving the gas turbine heat rate significantly improves the heat rate of the IGCC power plant. In addition results indicated that using a reheat steam system with current gas turbines improves IGCC performance, though as gas turbine efficiency increases, the impact of using a reheat steam system decreases. Increasing gas turbine temperatures from 1985{degree}F to 2500{degree}F was also found to have the potential to reduce overall IGCC system heat rates by approximately 700 BTU/kWh. The methodologies and models developed for this work are extremely useful tools for investigating the impact of specific gas turbine and steam cycle conditions on the overall performance of IGCC power plants. Moreover, they can assist utilities during the preliminary engineering phase of an IGCC project in evaluating the cost effectiveness of using specific gas turbines and steam cycles in the overall plant design. 45 refs., 20 figs., 10 tabs.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (USA); Stanford Univ., CA (USA). High Temperature Gasdynamics Lab.
• Sponsoring Organization: EPRI
• OSTI ID: 7248049
• Report Number(s): EPRI-GS/ER-6770
• 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
200104* -- Fossil-Fueled Power Plants-- Components
COAL GASIFICATION
COMBINED-CYCLE POWER PLANTS
COMPRESSORS
COMPUTERIZED SIMULATION
DIAGRAMS
DOCUMENT TYPES
EVALUATION
FLOWSHEETS
FLUIDS
GAS TURBINES
GASES
GASIFICATION
MACHINERY
POWER PLANTS
PROGRESS REPORT
SIMULATION
SYNTHESIS GAS
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
TURBINES
TURBOMACHINERY