摘要
为了解煤燃烧过程中NOx 的生成机理 ,在 6 0 0~14 0 0℃温度范围内 ,选取吡啶、吡咯为煤的含氮模型化合物 ,采取傅立叶红外光谱仪 (Ft-Ir)和分光光度计连用方式 ,在等温连续式流动反应器中实验研究了模型化合物热解过程中HCN、NH3 的逸出规律。结果表明 :HCN是模型化合物的热解产物中的主要含氮产物 ;吡啶、吡咯的HCN的转换率都随着温度的升高而增大 ;同温度下 ,吡咯的HCN生成率高于吡啶的HCN生成率 ,吡咯的NH3 生成率高于吡啶的NH3生成率。
To understand the formation mechanism of NO_ x during a combustion process, tests were conducted over the temperature range of 873-1 673 K by selecting pyridine and pyrrole as nitrogen-containing model compounds. With the combined use of a Fourier transform infrared spectrometer (Ft-Ir) and a spectrophotometer the law of HCN and NH_3 escape during the pyrolysis of model compounds was experimentally investigated in an isothermal continuous-flow reactor. The investigation results indicate that HCN is the main nitrogen-containing product in the pyrolysis products of model compounds. The conversion rate of pyridine and pyrrole will increase with a rise in temperature. Under a same temperature the HCN formation rate of pyrrole is higher than that of pyridine and the NH_3 formation rate of pyrrole is higher than that of pyridine.
出处
《热能动力工程》
CAS
CSCD
北大核心
2004年第3期246-248,共3页
Journal of Engineering for Thermal Energy and Power
基金
国家重点基础研究专项经费资助项目 (G19990 2 2 2 10 )
关键词
煤燃烧
氮
模型化合物
FT-IR
coal combustion, nitrogen, model compound, Fourier transform infrared radiation analyzer