IMECH-IR  > 高温气体动力学国家重点实验室
Experimental study on the optimum fuel concentration of high-concentration pulverized coal flame and the effect of coal quality
Wang X1; Tan HZ1; Yan WP2; Wei XL(魏小林)3; Xu TM1; Huia S1
2013
会议名称9th Asia-Pacific Conference on Combustion, ASPACC 2013
会议日期May 19, 2013 - May 22, 2013
会议地点Gyeongju, Korea, Republic of
会议录名称Proceedings of the 9th Asia-Pacific Conference on Combustion, ASPACC 2013
摘要High-concentration pulverized coal flame plays an important role of ignition for coal combustion system with rich-lean burners. In the presented works, a series of tests have been performed in a 1MW tangentially pulverized coal-fired furnace with rich-lean burners and in a simplified down-fired furnace to investigate the relation between the coal quality and the optimum fuel concentration (kg/kg). The results show that there is always an optimum fuel concentration corresponding to the highest furnace temperature and the shortest ignition length for each group of tests on the high-concentration pulverized coal flame, and the optimum fuel concentration generally decreases with the product of volatile content and heating value linearly as the empirical formula Copt=1.0857-0.164VQ0.6.The optimum fuel concentration also decreases when the traditional corner tangential flame is replaced by wall tangential flame. However, when the horizontal rich-lean burner is changed to vertical, it does not affect the value of optimum fuel concentration. NOx emission can be controlled much more efficiently by reducing air, when the coal concentration is in the range higher than the optimum lts can provide a meaningful guide for the efficient and safe operating of coal-fired furnace with rich-lean burners.
关键词Coal Coal fueled furnaces Furnaces Ignition Pulverized fuel Coal concentration Coal fired furnace Combustion systems Empirical formulas Fuel concentration Furnace temperatures Pulverized coal flame Pulverized coal fired furnaces
收录类别EI
语种英语
文献类型会议论文
条目标识符http://dspace.imech.ac.cn/handle/311007/77993
专题高温气体动力学国家重点实验室
作者单位1.MOE Key Laboratory of Thermo-Fluid Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
2.School of Energy and Power Engineering, North China Electric Power University, Baoding 071003, China;
3.Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
推荐引用方式
GB/T 7714
Wang X,Tan HZ,Yan WP,et al. Experimental study on the optimum fuel concentration of high-concentration pulverized coal flame and the effect of coal quality[C],2013.
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