Citation: LI Wen-xiu, WANG Bao-feng, REN Jie, ZHANG Kai, YANG Feng-ling, CHENG Fang-qin. Effect of mineral matter on emissions of SO₂ and NO_x during combustion of lean coal in O₂/CO₂ atmosphere[J]. Journal of Fuel Chemistry and Technology, ;2017, 45(10): 1200-1208. shu

Effect of mineral matter on emissions of SO₂ and NO_x during combustion of lean coal in O₂/CO₂ atmosphere

1.
Shanxi Collaborative Innovation Center of High Value-added Utilization of Coal-related Wastes, Shanxi University, Taiyuan 030006, China
2.
Jinneng Changzhi Co-generation co, Ltd, Changzhi 046011, China
3.
Energy & Power Engineering School, North China Electric Power University, Beijing 102206, China

Corresponding author: CHENG Fang-qin, cfangqin@sxu.edu.cn
Received Date: 1 June 2017
Revised Date: 23 August 2017

Fund Project: Shanxi Provincial Science and Technology Major Projects MD2015-01The project was supported by the National Natural Science Foundation of China-Shanxi coal based low carbon joint fund(U1610254), Shanxi Provincial Science and Technology Major Projects (MD2015-01) and Key Research and Development program of Shanxi province (International Cooperation) (201603D421041)the National Natural Science Foundation of China-Shanxi coal based low carbon joint fund U1610254Key Research and Development program of Shanxi province (International Cooperation) 201603D421041

Figures(8)

Combustion experiments of Changzhi coal at 550-1 000℃ were conducted in a tube furnace reactor in air and O₂/CO₂, respectively. The XRF, XRD etc. were employed to study the characteristics of raw coal and its demineralized coal. Effects of mineral matter in coal on combustion characteristics and release of SO₂ and NO_x during combustion were investigated using TG-DTG and Antaris-IGS. The results show that ignition and burnout temperature of the demineralized coal are lower than those of raw coal. In O₂/CO₂ the ignition and burnout temperature of raw coal and the demineralized coal are all higher. This shows that when oxygen concentration is 20%, the coals are easier to ignite and burnout in air. Besides that, SO₂ emission of the demineralized coal is higher than that of raw coal; while NO_x emission is opposite. For raw coal, SO₂ emission is higher when combusted in O₂/CO₂; while for the demineralized coal, it is opposite. During combustion in O₂/CO₂, NO_x emission is always lower whether for the raw or the demineralized coal.
- lean coal,
- oxy-fuel combustion,
- sulfur,
- nitrogen,
- emission characteristics
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沈阳化工大学材料科学与工程学院沈阳 110142

Effect of mineral matter on emissions of SO2 and NOx during combustion of lean coal in O2/CO2 atmosphere

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通讯作者: 陈斌, bchen63@163.com

Effect of mineral matter on emissions of SO₂ and NO_x during combustion of lean coal in O₂/CO₂ atmosphere