Computed NOx emission characteristics of opposed-jet syngas diffusion flames

In this paper, a detailed numerical study on NOx? emission characteristics of syngas diffusion flames under counterflow configuration is presented and the effects of syngas compositions and pressures on the NO formation are investigated at a constant strain rate.

Due to limited petrochemical? energy sources and the reduction of greenhouse gas emissions, synthesis gas? or syngas has been recognized as a viable energy source and an attractive fuel, particularly for stationary power generation with IGCC (Integrated Gasification Combined Cycle) technology (Moore, 1997; Schilling and Lee, 2003). Syngas which contains CO? and H2? as the main components can be obtained from many kinds of fossil fuels and solid combustibles, such as coal, biomass, refinery residuals and even municipal solid waste? (Brdar and Jones, 2000). The syngas composition and relative amount of the constituents may vary depending on the fuel sources and the gasification processes (Wender, 1996). This wide variation in syngas composition has a direct impact on combustion?, extinction and emission characteristics, which is a challenge in designing syngas combustors and applying syngas fuels. However, the combustion and emission characteristics of syngas/air flames are yet to be studied, especially for NOx emission as the environmental concerns continue to grow and the emission regulations become more stringent.

The paper can be viewed or downloaded in PDF format below. The research was conducted by:
Jou-Rong Hsu, Department of Mechanical Engineering, Chang Gung University, Taiwan

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Chang Gung University

PDF - Computed NOx emission characteristics of opposed-jet syngas diffusion flames