Low-NOx, high-efficiency multistaged burner: gaseous-fuel results

Technical Report · Mon Feb 01 04:00:00 EST 1988

OSTI ID:6658047

Srivastava, R K; Mulholland, J A

This paper discusses the evaluation of a multistaged combustion burner design on a 0.6-MW package boiler simulator for in-furnace NOx control and high combustion efficiency. Both deep air staging, resulting in a three-stage configuration, and boiler front wall fuel staging of undoped natural gas, yielding four stoichiometric zones, reduced the baseline NO emission by about 50% to 160 ppm, meeting the program goal. However, deep air staging resulted in the entire front end of the boiler being fuel-rich and required penetrations into the boiler for staged air injection. The fuel staging results, on the other hand, required no boiler penetrations and only a small fuel-rich flame core in the boiler. Further, sufficient air for complete oxidation of the primary combustion products was provided at the burner exit, prior to staged fuel and air injection in the boiler, in the fuel staging tests.

• Research Organization: Acurex Corp., Research Triangle Park, NC (USA)
• OSTI ID: 6658047
• Report Number(s): PB-88-250824/XAB
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
034000 -- Natural Gas-- Combustion
42 ENGINEERING
421000* -- Engineering-- Combustion Systems
AIR POLLUTION ABATEMENT
BOILERS
BURNERS
CHALCOGENIDES
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
NATURAL GAS
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT