External combustion steam injected gas turbine for cogeneration
A computer simulation of a Texaco entrained-bed coal-gasifier-fueled advanced (2400/sup 0/F) gas turbine and heat-recovery steam turbine combined-cycle design analyzed the alternative control strategies during load-following maneuvers. Boyce Engineering studied the transient operation of this gasification/combined-cycle (GCC) plant to determine open-loop response as a stand-alone plant, as well as closed-loop response while functioning in a large interconnected utility network during specified operating contingencies. A cold-gas clean-up train with a Selexol physical absorption system removed up to 90% of the H/sub 2/S in the raw fuel gas produced from high-sulfur Illinois coal. Control was satisfactory in either gasifier-lead or turbine-lead mode. Supplemental fuel-gas storage was not required, but GCC plant fuel-gas pressure control to minimize pressure transients at the absorber column is recommended. In simulations, the GCC plant responded well and local controllers adequately maintained the GCC plant operation during typical variations in electric power demand and every emergency upset.
- Research Organization:
- Boyce Engineering International, Inc., Houston, TX (USA)
- OSTI ID:
- 5553274
- Report Number(s):
- DOE/ET-11448-T1
- Country of Publication:
- United States
- Language:
- English
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20 FOSSIL-FUELED POWER PLANTS
COAL GASIFICATION PLANTS
OPERATION
DUAL-PURPOSE POWER PLANTS
DESIGN
COGENERATION
COMPUTERIZED SIMULATION
GAS TURBINES
HEAT RECOVERY
HYDROGEN SULFIDES
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MACHINERY
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TURBINES
TURBOMACHINERY
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200102 - Fossil-Fueled Power Plants- Power Cycles