Research Progress on the Characteristics of NOx Emission in Circulating Fluidized Bed Boiler

被引：0
|
作者：
Ke X. [1 ]
Zhang M. [1 ]
Yang H. [1 ]
Lyu J. [1 ]
Guo X. [2 ]
Li J. [2 ]
He H. [2 ]
机构：
[1] Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Energy and Power Engineering, Tsinghua University, Haidian Distinct, Beijing
[2] Taiyuan Boiler Group Co. Ltd., Taiyuan
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2021年 / 41卷 / 08期
关键词：
Circulating fluidized bed; Influencing factors; Low-NO[!sub]x[!/sub] combustion; NO[!sub]x[!/sub; Research progress;
D O I：
10.13334/j.0258-8013.pcsee.201367
中图分类号：
学科分类号：
摘要：
The NOx emission of the circulating fluidized bed (CFB) boiler is not only affected by the fuel properties, but also closely related to the combustor performance and operation conditions. It is important to study the relationship between NOx emission and several design or operation parameters, which is also the key to realize the de-NOx combustion in engineering for a CFB boiler. Under a specific boiler load and for a selected fuel type, several engineering methods were proved to have significant effects on the reduction of NOx emission, such as improving the performance of circulating loop including improving cyclone efficiency, appropriately decreasing the size of feeding coal and limestone particles, adjusting the air staging and controlling the oxygen content in furnace, controlling the bed temperature and bed pressure drop in reasonable range, improving the uniformity of air and coal injection, etc., This paper reviewed the NOx formation and reduction mechanism under CFB combustion conditions, and summarized the effects of several design or operation parameters on the NOx emission. The principles of some main de-NOx combustion technologies were also analyzed. Finally, the key scientific issues and the future research directions related with NOx emission of CFB combustion technology were discussed. © 2021 Chin. Soc. for Elec. Eng.
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页码：2757 / 2770
页数：13
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