Analysis of faults in trial operation of DG490/13.73-Ⅱ2 CFB boiler

Abstract

Abstract: The faults occurred during installation and commission of DG490/13.73-Ⅱ2 CFB boiler manufactured by Dongfang Boiler Factory were discussed, which include the pulverized coal leakage of coal feeder system, the jam of limestone feeder, the coking of furnace and refeeder, distortion and burning loss of ignition duct expansion joint, air leakage of air heater and others. Some typical accident examples, such as the boiler shutdown due to severe water shortage caused by blocking fault of filter screen of feed pump and secondary consumption in tail duct caused by serious overtemperature in economizer area, were introduced, and the reasons of the accidents were analyzed. The solving method and concrete measures to prevent the accidents were proposed, which can be used as reference for same units in erection and operation.


Key words: circulating fluidized bed (CFB) boiler, economizer, secondary combustion, accident, measure

ZHANG Chunli. Analysis of faults in trial operation of DG490/13.73-Ⅱ2 CFB boiler[J]. Huadian Technology, 2010, 32(4): 45-47.

[1]	LI Fangyi, LI Nan, ZHOU Yan, XIE Wu. Prediction on the regional carbon emission factor for power generation based on multi-dimensional data and deep learning [J]. Integrated Intelligent Energy, 2023, 45(8): 11-17.
[2]	LIU Yixian, WANG Yubin, YANG Qiang. High fault-tolerant distribution network state estimation method based on gated graph neural network [J]. Integrated Intelligent Energy, 2023, 45(6): 1-8.
[3]	JIA Zhijun, BAI Delong, SONG Yanjie, WANG Jianfei, LI Chunxin. Research on on-line fault diagnosis and treatment of power plant equipment based on KPCA [J]. Huadian Technology, 2021, 43(8): 48-53.
[4]	LIU Xiuru, LI Peipei, WANG Xianpeng, LU Xuge, WANG Zhiqiang. Review and prospect of researches on boilers´ flue gas acid dew point [J]. Huadian Technology, 2020, 42(9): 45-55.
[5]	YANG Mingming. Research on wind turbine power curve based on Nacelle Transfer Function [J]. Huadian Technology, 2020, 42(5): 50-54.
[6]	LI Penggang. Cause analysis for the leakage of serpentinetube elbow in supercritical boiler economizer [J]. Huadian Technology, 2020, 42(1): 68-72.
[7]	LIU Zhimin1,2, DING Yang1, XU Tingting1,BAI Yunshan1. Research on gas turbine combustion pressure fluctuation and the key technologies for its measurement [J]. Huadian Technology, 2019, 41(9): 1-5.
[8]	LI Shengjie，WEN Liang. Necessity analysis of filtered containment venting system of nuclear reactor [J]. Huadian Technology, 2019, 41(8): 65-69.
[9]	LI Haiyang，WANG Renlei，YOU Liangzhou，HENG Shiquan. Experimental study of dissolved oxygen’s effect on dissolved hydrogen analyzer of the main steam [J]. Huadian Technology, 2019, 41(7): 27-30.
[10]	WANG Xueli. Reasons analysis for tube blasting and preventive measures for superheater of 1000MW supercritical boiler [J]. Huadian Technology, 2019, 41(7): 70-72.
[11]	XING Jun1，HE Chao1，SHU Zhongping2. Application of mobile sonic soot blowers in economizer of 660MW boiler [J]. Huadian Technology, 2019, 41(7): 73-76.
[12]	YE Luo，WU Jundong，CHEN Xian. Operation analysis of low temperature economizer system [J]. Huadian Technology, 2019, 41(6): 50-52.
[13]	WANG Zhoujun1,2，LI Xinghua2，TANG Lijun1，DUAN Quansheng2. Study on flow mixing and equalizing technique of primary air at inlet of medium speed coal mills [J]. Huadian Technology, 2019, 41(5): 17-21.
[14]	ZHANG Jibing，QIAO Xiaosan. Calculation and comparison of carbon emissions based on the default value and measured value of raw coal emission factor [J]. Huadian Technology, 2019, 41(3): 73-75.
[15]	SONG Xin. Analysis and solution for temperature fluctuation of turbine shaft seal steam [J]. Huadian Technology, 2019, 41(2): 46-48.

Analysis of faults in trial operation of DG490/13.73-Ⅱ2 CFB boiler

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments