Evaluation of advanced combustor concepts for dry NO/sub x/ suppression with coal-derived, gaseous fuels

Conference · Sat Jan 01 04:00:00 EST 1983 · Am. Soc. Mech. Eng., (Pap.); (United States)

OSTI ID:5610581

Beebe, K W; Notardonato, J; Symonds, R A

This paper presents the results of testing two combustion systems--the gas-fueled rich-lean combustor and the catalytic combustor--for fuel efficiency and emission levels. A lean-lean combustor was also briefly investigated. The rich-lean combustor, in the single configuration tested, did not significantly reduce thermal nitrous oxides emission for the baseline gas fuel having a lower heating value of 244 Btu/scf (10.3 MJ/NCM). Aside from this drawback, the combustor provided generally satisfactory performance for all other important combustion parameters including co emissions, smoke, pattern factor, pressure drop, metal temperatures, ignition, turndown, and post-test condition. Test results indicate that the lean-lean combustor concept has the potential to achieve ultra-low nitrous oxides emissions for liquid and gas fuels having no fuel-bound nitrogen. The catalytic combustor demonstrated the potential for very low nitrous oxides emissions burning distillate fuel. The catalytic reactor can be ignited easily at the compressor discharge temperatures available in present-day gas turbines. Parallel staging of the catalyst with a conventional design requires careful control of airflow splits and catalyst pressure drop. Use of variable-geometry devices to control airflow distribution to the reactor and pilot stages are necessary for the parallel-design approach. General Electric has completed the preliminary design of a series-staged combustor which will avoid flow-split instabilities encountered in the tests.

• Research Organization: General Electric Company, Schenectady, NY
• OSTI ID: 5610581
• Report Number(s): CONF-830309-
• Conference Information: Journal Name: Am. Soc. Mech. Eng., (Pap.); (United States) Journal Volume: 83-GT-14
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
421000* -- Engineering-- Combustion Systems
AIR POLLUTION CONTROL
CATALYTIC COMBUSTORS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL GAS
COMBUSTION
COMBUSTORS
CONTROL
EXHAUST GASES
FLUIDS
FUEL-AIR RATIO
GAS TURBINES
GASEOUS WASTES
GASES
MACHINERY
NITROGEN COMPOUNDS
NITROGEN OXIDES
NOZZLES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARAMETRIC ANALYSIS
POLLUTION CONTROL
THERMOCHEMICAL PROCESSES
TURBINES
TURBOMACHINERY
WASTES