Low no subx heavy fuel combustor concept program. phase 1a: Coal gas addendum. Final report, 29 Jun. - Oct. 1981

Technical Report · Fri Jan 01 04:00:00 EST 1982

OSTI ID:6788074

Rosfjord, T; Sederquist, R

The performance and emissions from a rich-lean combustor fired on simulated coal gas fuels were investigated using a 12.7-cm diameter axially-staged burner originally designed for operation with high heating value liquid fuels. A simple, tubular fuel injector was substituted for the liquid fuel nozzle no other combustor modifications were made. Four test fuels were studied including three chemically bound nitrogen-free gas mixtures with higher heating values of 88, 227, and 308 kj/mol (103, 258 and 349 Btu/scf), and a 227 kj/mol (258 Btu/scf) heating value doped with ammonia to produce a fuel nitrogen content of 0.5% (wt). Stable, ultra-low nitrogen oxide, smoke-free combustion was attained for the nitrogen-free fuels. Results with the doped fuel indicated that less than 5% conversion of NH3 to nitrogen oxide levels below Environmental Protection Agency limits could be achieved. In some instances, excessive CO levels were encountered. It is shown that use of a burner design employing a less fuel-rich primary zone than that found optimum for liquid fuels would yield more acceptable CO emissions.

• Research Organization: United Technologies Corp., South Windsor, CT (USA)
• OSTI ID: 6788074
• Report Number(s): NASA-CR-165577
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
COAL GAS
COMBUSTION
COMBUSTION CHAMBERS
COMBUSTION PRODUCTS
DISPERSIONS
EXHAUST GASES
FLUIDS
FUELS
GAS TURBINES
GASEOUS WASTES
GASES
MACHINERY
MIXTURES
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
SYNTHETIC FUELS
THERMOCHEMICAL PROCESSES
TURBINES
TURBOMACHINERY
WASTES