【摘要】 以吡啶作为煤的含氮模型化合物,在石英管常压平推流反应器中进行了600～1300℃范围内的热分解和水蒸气汽化实验,使用气相色谱质谱联用仪对反应中的液体产物进行了分析和表征。探讨了煤中氮转化为HCN和NH3的机理,在吡啶热解与水蒸气汽化的液体产物中发现了2,4戊二烯腈,并在汽化产物中检出了2甲氧基吡啶。结果表明:HCN来源于吡啶环的热裂解,NH3则来源于氰基的水解。更多还原

【Abstract】 Pyridine was used as a model compound to study on the formation mechanism of HCN and NH₃ from coal-N. Some experiments were carried out in a tubular quartz reactor at the temperature of 600-1 300 ℃, and gas chromatography-mass spectrometry （GC/MS） was used to measure the liquid products from experiments. Some useful results and conclusions were acquired as following: 2,4-pentadlenenitrile could be detected in the samples of pyridine experiments; and the 2-methoxy-pyridine can be detected in the sample of pyridine gasification. All of the results seemly reveal that HCN comes from the thermal cracking of pyridine and NH₃ is the product of the hydrolyzation of nitrile.更多还原