Effect of the particle size on combustion characteristics of pulverized coal in an O2/CO2 atmosphere

被引：44
作者：
Yi, Baojun [1 ]
Zhang, Liqi [1 ]
Mao, Zhihui [1 ]
Huang, Fang [1 ]
Zheng, Chuguang [1 ]
机构：
[1] Huazhong Univ Sci & Technol, State Key Lab Coal Combust, Wuhan 430074, Hubei Province, Peoples R China
来源：
FUEL PROCESSING TECHNOLOGY | 2014年 / 128卷
基金：
中国国家自然科学基金;
关键词：
Particle size; Thermo-gravimetric analysis; O-2/CO2; combustion; Pulverized coal; Combustion characteristics; OXY-FUEL COMBUSTION; THERMOGRAVIMETRIC ANALYSIS; OXYFUEL COMBUSTION; CHAR COMBUSTION; PYROLYSIS; O-2/N-2; IGNITION; AIR; DEVOLATILIZATION; TEMPERATURE;
D O I：
10.1016/j.fuproc.2014.06.025
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The effects of the particle size on combustion characteristics of pulverized coals under O-2/N-2 and O-2/CO2 atmospheres were compared using thermo-gravimetric analysis method. The results show the effect is greater in O-2/CO2 atmosphere. It presents obvious fluctuation, which becomes greater as the volatile matter content of coal increases. The effects of O-2 concentrations were also compared. The results show a noticeable discrepancy between O-2/N-2 and O-2/CO2 atmospheres at a low O-2 concentration and indiscernible at a high O-2 concentration. Meanwhile, the fluctuation effect is different under the different O-2 concentrations, which can be related to the reaction rate. In conclusion, under the O-2/CO2 atmosphere, the effect of the particle size on pulverized coal combustion is completely different from that under O-2/N-2 condition. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：17 / 27
页数：11
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