Role of carbide slag addition on NO emission characteristics during coal combustion

被引：13

作者：

Li, Liyao ^{[1
]}

Cheng, Leming ^{[1
,2
]}

Wang, Bo ^{[1
]}

Ma, Zhangke ^{[1
]}

Zhang, Weiguo ^{[1
]}

机构：

[1] Zhejiang Univ, State Key Lab Clean Energy Utilizat, Inst Thermal Power Engn, Hangzhou 310027, Peoples R China

[2] Zhejiang Univ, Inst Thermal Power Engn, Yuquan Campus,38 Zheda Rd, Hangzhou 310027, Zhejiang, Peoples R China

来源：

FUEL | 2023年 / 331卷

关键词：

Carbide slag; Coal; Circulating fluidized bed; PERFORMANCE; CONVERSION; CAO;

D O I：

10.1016/j.fuel.2022.125984

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This work presents an experimental study on the NO emission characteristics of coal combustion with carbide slag addition. Combustion experiments were carried out in a fixed-bed reactor to investigate the effects of Ca/S molar ratio, oxygen concentration and reaction temperature on the transformation of fuel nitrogen to NO emission. Further, a pilot test was performed in a 30 kW CFB reactor to study the influence of carbide slag on the NO emission. Experimental results show that using carbide slag and a high Ca/S molar ratio promoted the fuelN/NO conversion rate. The main contribution to the fuel-N/NO conversion rate increment was the catalytic role of carbide slag in the char-N/NO conversion process. The promotion effect of carbide slag on fuel-N/NO conversion was weakened at a higher temperature and lower O2 concentration. The pilot test results verified that using carbide slag promoted NO emission. Based on the test results, the fuel-N conversion route and the NO formation process during coal combustion with carbide slag addition were presented.

引用

页数：9

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