Effect of gasifier-feed-rate variations on coal-gas-combustion characteristics. Final report

Technical Report · Sat May 01 04:00:00 EDT 1982

OSTI ID:5276079

Gilmartin, T J

Combined-cycle industrial gas turbines fired on coal-derived gaseous fuels will play an important role in future electric power generation. Conventional, diffusion-flame type, gas turbine combustors can successfully burn lower heating value (LHV) gases with only minor modifications. However, the peak flame temperatures which result from the combustion of medium heating value (MHV) gases in these combustors are comparable to natural gas, resulting in undesirably high concentrations of NO/sub x/. Combustors incorporating new design schemes optimized for use with MHV gases have been tested and were found capable of meeting Environmental Protection Agency (EPA) NO/sub x/ requirements without water injection. The purpose of this program was to confirm these early data by operating previously evaluated combustors during an extended series of gasifier test programs. Program objectives were to select an LHV and MHV combustor whose emission characteristics had been previously demonstrated and operated that during an extended number of gasifier runs. Assuming that different parameters of gasifier operation, such as coal feed rate, would produce significant variation in fuel gas composition, it was desired to measure the impact of this variation on emissions characteristics for each burner. Results show excellent repeatability of NO/sub x/ emissions data over a three year period, especially at high power levels. Variations in fuel gas characteristics for a 2:1 turndown in gasifier feedrate were insignificant. The impact of gasifier feedrate on combustor NO/sub x/ emissions was therefore insignificant.

• Research Organization: United Technologies Corp., South Windsor, CT (USA). Power Systems Div.; Pratt and Whitney Aircraft Group, West Palm Beach, FL (USA). Government Products Div.; Texaco, Inc., Montebello, CA (USA). Montebello Research Lab.
• OSTI ID: 5276079
• Report Number(s): EPRI-AP-2216; ON: DE82905367
• 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
CHALCOGENIDES
COAL GASIFICATION
COMBINED-CYCLE POWER PLANTS
COMBUSTION PROPERTIES
DATA
EXPERIMENTAL DATA
FLUE GAS
FLUIDS
FUEL GAS
FUELS
GAS FUELS
GAS TURBINES
GASEOUS WASTES
GASES
GASIFICATION
INFORMATION
INTERMEDIATE BTU GAS
LOW BTU GAS
MACHINERY
NITROGEN COMPOUNDS
NITROGEN OXIDES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
POWER PLANTS
QUANTITY RATIO
TESTING
TEXACO GASIFICATION PROCESS
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
TURBINES
TURBOMACHINERY
WASTES