Experimental Investigation of NO_x and CO Emissions from Fuel Rich-Lean Flame of Natural Gas

Abstract:

NOx and CO emissions of fuel rich-lean flame of natural gas water heaters were experimentally investigated. Fuel-rich and fuel-lean flame with different air factors were analyzed separately. Emission of fuel-rich flame is CO whereas emission of fuel-lean is NOx, and fuel rich-lean ratio is the most important factor for NOx and CO emission. If fuel-rich flame α1 is changed with constant fuel-lean flame α2, NOx emission decreases and CO emission increases evidently. If α2 is changed with constant α1, NOx decreases slightly and CO increases initially and then decreases. Depressing fuel-lean flame can strengthen excess O2 diffusion to fuel-rich flame, and then reduces NOx and CO emissions.

• Periodical: Advanced Materials Research (Volumes 347-353)
• Pages: 3821-3825
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.347-353.3821
• Online since: October 2011
• Authors: Yong Zhang Cui, Guang Peng Li, Wei Guang Xu, Jian Bin Zhu
• Keywords: Fuel-Lean Flame, Fuel-Rich Flame, Nitrogen Oxides (NO_X)

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