Experimental analysis of the effects of hydrogen addition on methane combustion

Abstract

SUMMARY This paper presents gas emissions from turbulent chemical flow inside a model combustor, for different blending ratios of hydrogen–methane composite fuels. Gas emissions such as CO and O2 from the combustion reaction were obtained using a gas analyzer. NOx emissions were measured with a NOx analyzer. The previously obtained flame temperature distributions were also presented. As the amount of hydrogen in the mixture increases, more hydrogen is involved in the combustion reaction, and more heat is released, and the higher temperature levels are resulted. The results have shown that the combustion efficiency increases and CO emission decreases when the hydrogen content is increased in blending fuel. It is also shown that the hydrogen–methane blending fuels are efficiently used without any important modification in the natural gas burner. Copyright © 2011 John Wiley & Sons, Ltd.

Experimental Study of Hydrogen Addition Effects on a Swirl-Stabilized Methane-Air Flame

“…One study measured CO emission at different axial locations along the combustor. The results indicated that the higher H 2 molar fraction in the fuel blends could benefit a lower CO concentration at a fixed power [14]. Another study showed that adding H 2 molar fraction in the fuel blends with constant fuel volume flow, the CO emission first decreased and then increased [15].…”

Study on using hydrogen and ammonia as fuels: Combustion characteristics and NOxformation

“…Results showed that hydrogen might be considered a good alternative fuel for burners as its reduction of pollutant emissions. Furthermore, İlbaş et al [24] also studied the effects of hydrogen addition on methane combustion in nature gas burner. The authors concluded that combustion efficiency increased and CO emission decreased as the hydrogen content increased in the blending fuel, and hydrogen-methane blending fuels were efficiently used without any significant modification in the natural gas burner [24].…”

Numerical study of hydrogen effects on pressurized methane‐oxy combustion in counter‐flow diffusion flame

“…In Figure 11C, as the hydrogen content increases, the NO-production rate increases when the mixture fraction is between 0.1 and 0.2, where the combustion occurs. The tendency of the NO production to increase with the increase in hydrogen content was also demonstrated in the results obtained by _ Ilbas ¸et al 47 and Park et al 48 Through their research, they pointed to an increase in the flame temperature as the major parameter for the increase in NO production. In pressurized methane-oxy combustion, when hydrogen is blended, it is necessary to analyze the chemical reactions involved in the formation of NO at 1 and 30 atm separately.…”