[Experimental investigation on emission characteristic of NOx during micropulverized coal oxidation].
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.
Jiang
Xiu-Min
XM
School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China. xiuminjiang@sjtu.edu.cn
Wei
Li-Hong
LH
Huang
Xiang-Yong
XY
Zhang
Chao-Qun
CQ
D000393:Air Pollutants / Q000032:analysis* / Q000737:chemistry; D003031:Coal; D008401:Gas Chromatography-Mass Spectrometry; D006358:Hot Temperature; D009589:Nitrogen Oxides / Q000032:analysis* / Q000737:chemistry; D010084:Oxidation-Reduction; D010316:Particle Size
D000393:Air Pollutants; D003031:Coal; D009589:Nitrogen Oxides