FUNDAMENTAL STUDIES OF A PARTIAL PREMIXED COUNTER-FLOW COMBUSTION SYSTEM AND ITS EFFECT ON NOx EMISSIONS

• Published in: Combustion science and technology Vol. 178; no. 8; pp. 1457 - 1476
• Main Authors: RANGEL, L. P., FLETCHER, L. M., POURKASHANIAN, M., WILLIAMS, A.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: London Taylor & Francis Group 01-08-2006; Taylor & Francis
• Subjects: Applied sciences; Combustion of gaseous fuels; Combustion. Flame; counter-flow combustion; emissions; Energy; Energy. Thermal use of fuels; Exact sciences and technology; partial premixed burner; Theoretical studies. Data and constants. Metering; Nitrogen oxide; Methane; counter-flow combustion; Numerical analysis; NOX emissions; Burner; Combustion; Thermal efficiency; partial premixed burner; Experimental study; Pollutant emission
• ISSN: 0010-2202; 1563-521X
• DOI: 10.1080/00102200600721255

The use of air staging as a technique for reducing NO
X
emissions from process industry burners has been employed for many years but lower levels of NO
X
and high thermal efficiencies can be achieved using a partial premixed combustion mode. The development of partial premixed burners has only gradually increased because of the increased risk of flash back and the difficulties of control. The current study presents both an experimental and a numerical investigation on a laboratory-scale counter-flow combustion system of the partial premixed mode. The system aims to duplicate the mixing process observed within an industrial burner, which produces a double flame structure. Results have shown that the nozzle configuration has a direct influence on NO
X
emissions.