Research on Operation of Swirl-Opposed Firing Boiler Retrofitted for Low NOx Emission

doi:10.11930/j.issn.1004-9649.2017.08.063.05

Abstract

Abstract: The emission of NO_x decreased obviously after the transformation with low NO_x burner (LNB) for a 600 MW unit. However, there are some problems during the process in operation, such as overheating of the reheater, the high oxygen deviation and the high NO_x emission under high power loads. The problems are discussed in this paper and some improvement measures are proposed to ensure the efficiency and safety of LNB.

Key words: coal-fired generation, boiler, burner retrofitting, over-fire air, central-fuel-rich swirl coal combustion burner, recirculation zone, ignition-point

CLC Number:

LIU Qingwei, GUO Zhiming, LU Ye, REN Lili, DU Daquan. Research on Operation of Swirl-Opposed Firing Boiler Retrofitted for Low NO_x Emission[J]. Electric Power, 2017, 50(8): 63-67.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2017.08.063.05

https://www.electricpower.com.cn/EN/Y2017/V50/I8/63

References

[1] 苏亚欣,毛玉如,徐璋. 燃煤氮氧化物排放控制技术[M]. 北京：化学工业出版社,2005.
[2] 李争起,吴少华,孙锐,等. 径向浓淡旋流煤粉燃烧器调节特性的研究[J]. 中国电力,1997,30（1）：38-41.
LI Zhengqi, WU Shaohua, SUN Rui, et al . Study of radial bias combustion swirl pulverized coal burner regulation characteristics[J]. Electric Power, 1997, 30(1): 38-41.
[3] 张晓辉,孙锐,孙绍增,等. 立体分级燃烧对NO x 排放特性的影响[J]. 机械工程学报,2009,45（2）：199-205.
ZHANG Xiaohui, SUN Rui, SUN Shaozeng, et al . Effects of three dimensional staged combustion on the emission characteristics of NO x [J]. Journal of Mechanical Engineering, 2009, 45(2): 199-205.
[4] 李志强, 李容先, 崔龙铉, 等. 旋流浓淡煤粉燃烧器出口区域气固两相流动的试验研究[J]. 热能动力工程,1999,14（6）：450-454.
LI Zhiqiang, LI Rongxian, CUI Longxuan, et al . Swirl burner outlet area of the gas solid experimental study of two-phase flow [J]. Thermal Power Engineering, 1999, 14(6): 450-454.
[5] 张万军. 中心给粉旋流燃烧器在电站锅炉中的应用[J]. 宁夏电力,2009（S1）：211-215.
ZHANG Wanjun. Application of the center feed swirl burner in the power station boiler[J]. Ningxia Electric Power, 2009(S1): 211-215.
[6] 孙浩,周顺文. 前后墙对冲LNASB旋流燃烧器冷态特性试验研究[J]. 锅炉制造,2010（5）：4-7.
SUN Hao, ZHOU Shunwen. Experimental study on the cold state characteristics of LNASB swirl burner with front and back wall [J]. Boiler Manufacturing, 2010(5): 4-7.
[7] 孙锐,孙恩召,李争起,等. 旋流煤粉燃烧器喷口结构对出口气流特性影响的冷态试验研究[C]//中国工程热物理学会会议论文集. 宜昌,1995：50-55.
SUN Rui, SUN Enzhao, LI Zhengqi, et al . Cold test study on the influence of nozzle structure of swirl pulverized coal burner on outlet flow characteristics [C]// Proceedings of the China Academy of Engineering Thermal Physics. Yichang, 1995: 50-55.
[8] 陈勤根,茅建波,应明良. 某300 MW机组锅炉低氮燃烧器改造后再热汽温偏差大原因分析及调整[J]. 浙江电力,2016（3）：42-45.
CHEN Qingen, MAO Jianbo, YING Mingliang. Cause analysis and adjustment of reheat steam temperature deviation after low NO x boiler burner retrofit of 300 MW unit[J]. Zhejiang Electric Power, 2016(3): 42-45.
[9] 李韵,付凌波,鞠鑫,等. 600 MW机组燃烧调整与优化运行研究[J]. 节能技术,2016,34（2）：99-102.
LI Yun, FU Lingbo, JU Xin, et al . Research on combustion adjustment and optimizing operation of 600 MW unit[J]. Energy Conservation Technology, 2016, 34(2): 99-102.
[10] 周昊,马炜晨,杨玉,等. 低氮煤粉旋流燃烧器火焰特性的研究[J]. 浙江大学学报（工学版）,2016（4）：698-703.
ZHOU Hao, MA Weichen, YANG Yu. et al . Investigation of flame characteristics of low NO x swirl burner[J]. Journal of Zhejiang University(Engineering Science), 2016(4): 698-703.
[11] 张伯兴,吕华兵. 600 MW锅炉氮氧化物整体控制实践[J]. 中国电力,2016,49（2）：159-163.
ZHANG Boxing, LV Huabing. The practice of general NO x control of a 600 MW boiler [J]. Electric Power, 2016, 49(2): 159-163.
[12] WASEEM A N, LYLE M P, DALE R T. In-situ species, temperature and velocity measurements in a pulverized coal flame[J]. Combustion Science and technology, 1991(143): 63-77.
[13] ABBAS T, COSTEN P, LOCKWOOD F C. Influence of near burner region aerodynamics on the formation and emission of nitrogen oxides in a pulverized coal-fired furnace[J]. Combustion and Flame, 1992(91): 346-363.
[14] LYLE M P, ROBERT E, JACKSON, et al . LDA measurements in a pulverized coal flame at three swirl ratios[J]. Combustion Science and Technology, 1999(143): 79-107.

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Research on Operation of Swirl-Opposed Firing Boiler Retrofitted for Low NO_x Emission

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