Effect of Fe on NO release during char combustion in air and O

2012年第6卷第2期

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《能源前沿（英文）》 >> 2012年第6卷第2期 doi: 10.1007/s11708-012-0181-2

Effect of Fe on NO release during char combustion in air and O

State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China

发布日期： 2012-06-05

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摘要

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 CO is larger than that in N . However, at 1573 K, it is smaller in CO atmosphere due to particle breaking by gasification of char and CO . 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.

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NO ; Fe ; char ; combustion ; CO₂