Jiang Xiu-Min, Wei Li-Hong, Huang Xiang-Yong, Zhang Chao-Qun
School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China.
Huan Jing Ke Xue. 2008 Mar;29(3):583-6.
The combustion experiments of HG micronized coal have been conducted by combining DTG and GC-MS. The effects on NOx emission caused by particle size, oxygen concentration and heating rate were analyzed. The results show that under combustion condition that oxygen concentration is 20%, NOx precipitations of HG coal in difference sizes are single-peaked courses. Particle size impacts NOx emission from coal combustion significantly. Micro-pulverized coal reduces NOx emission. Under heating condition with 5 degrees C/min, 10 degrees C/min and 20 degrees C/min, precipitation of NO and NO2 is increased with heating rate rising, and temperature parallelized with maximum NO precipitation rate is increased with heating rate rising as well. With increasing of oxygen concentration in combustion, NOx precipitation increases correspondingly, and temperature parallelized with maximum NOx precipitation rate is reduced.
通过结合微商热重分析（DTG）和气相色谱-质谱联用仪（GC-MS）对神华微粉煤进行了燃烧实验。分析了粒径、氧气浓度和升温速率对氮氧化物排放的影响。结果表明，在氧气浓度为20%的燃烧条件下，不同粒径的神华煤的氮氧化物析出过程为单峰过程。粒径对煤燃烧过程中的氮氧化物排放有显著影响。微粉煤降低了氮氧化物排放。在升温速率为5℃/min、10℃/min和20℃/min的加热条件下，NO和NO₂的析出量随升温速率的升高而增加，与最大NO析出速率对应的温度也随升温速率的升高而升高。随着燃烧过程中氧气浓度的增加，氮氧化物析出量相应增加，与最大氮氧化物析出速率对应的温度降低。
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