Effect of Fe on NO release during char combustion in air and O2/CO2
Ying GU , Xiaowei LIU , Bo ZHAO , Minghou XU
Front. Energy ›› 2012, Vol. 6 ›› Issue (2) : 200 -206.
Effect of Fe on NO release during char combustion in air and O2/CO2
The chemistry of char was probed by studying nitrogen release under the reactions with air and oxy-fuel combustion. The experiments were conducted in a drop tube furnace and a fixed bed flow reactor. NO was observed during those experiments. The results show that the particle size of char generated at 1073 K in CO2 is larger than that in N2. However, at 1573 K, it is smaller in CO2 atmosphere due to particle breaking by gasification of char and CO2. The Fe addition increases the NO conversion ratio, and the effect of Fe rises steeply with the process going until it becomes stable in the end. The results also indicate that the release of NO increases more significantly with the Fe addition in oxy-fuel environment.
NO / Fe / char / combustion / CO2
Higher Education Press and Springer-Verlag Berlin Heidelberg
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