Reason analysis of high exhausted gas temperature of a boiler and its countermeasures

Abstract

Abstract:

The change of exhausted gas temperature has a great influence on boiler efficiency. After the 600MW direct aircooled lignitefired subcritical unit of Baiyinhua Jinshan Power Generation Company Limited put into operation, there exist a problem of high exhausted gas temperature. This paper deeply analyzed the main reason of high exhausted gas temperature, and adopted some measures, such as adjusting oxygen volume, optimizing coal pulverizing system and adjusting combustion, etc. Then it conducted a technical transformation of economizer. After the transformation, the exhausted gas temperature reached the design value basically.

Key words:

boiler, exhausted gas temperature, boiler efficiency, operation optimization；technical transformation

WANG Donghui.

Reason analysis of high exhausted gas temperature of a boiler and its countermeasures

[J]. Huadian Technology, 2017, 39(4): 50-55.

[1]	WU Siming，TONG Jialin，WU Yueseng，QI Yong，SUN Wuyi. Comprehensive upgrading reconstruction and performance analysis of a subcritical boiler [J]. Huadian Technology, 2020, 42(6): 66-71.
[2]	ZHAO Xiaopeng, SU Yongjian, XU Yiwei, LI Yanjun, LIU Jun, GUO Hongyuan, TAN Kai. Experimental study on large-proportion semi coke co-combustion in a 660 MW supercritical pulverized coal boiler [J]. Huadian Technology, 2020, 42(12): 22-27.
[3]	LIU Peiqi，LIU Xiaomeng，ZHU Yue. Application research of air staging technology based on CFD [J]. Huadian Technology, 2019, 41(1): 32-35.
[4]	LIU Zhongxuan，NING Xinyu，WANG Yashun，CHENG Shi，ZHENG Mincong. Research and analysis on boilers status quo of lignite mixed burning and its effect [J]. Huadian Technology, 2019, 41(1): 77-79.
[5]	ZHAO Na. Application and analysis of the leakage monitoring system of Yangliuqing thermo electric boiler [J]. Huadian Technology, 2018, 40(7): 25-28.
[6]	MO Bulin. Reform of boiler furnace pressure protection system [J]. Huadian Technology, 2018, 40(7): 29-31.
[7]	CHEN Yongsheng. Regular deviation analysis and treatment of tube explosions caused by oxide scale clogging at final superheater of boilers [J]. Huadian Technology, 2018, 40(6): 23-25.
[8]	LI Ge1, ZHU Haibao1, WANG Jun2. Reason analysis and prevention of the burnout of boiler burner nozzle [J]. Huadian Technology, 2018, 40(2): 21-24.
[9]	WANG Dong, WANG Ye, LIU Wensheng, JIA Shaowei, WANG Jingwei, ZHU Guobin. Boiler heat surface small diameter pipe ultrasonic phased array inspection technology study [J]. Huadian Technology, 2017, 39(7): 7-10.
[10]	WANG Lipeng, WANG Lei, QIN Qi, LAN Xiaocun, JI Ya. Cause analysis of low temperature of reheated steam at low load of boiler and reconstruction of combustor [J]. Huadian Technology, 2017, 39(7): 36-38.
[11]	RAO Hongjian. A new method to prevent boiler coking and coke dropping study and implementation [J]. Huadian Technology, 2017, 39(6): 41-43.
[12]	ZHANG Lei. Operation and fault analyses of boiler water circulating pump [J]. Huadian Technology, 2017, 39(6): 61-63.
[13]	HUANG Xiaojun. 600MW unit high pressure reheater startup pipeline vibration analysis and treatment [J]. Huadian Technology, 2017, 39(4): 48-49.
[14]	GUI Xiaoyan, KUANG Renqin. The operation optimization of 700MW supercritical boiler [J]. Huadian Technology, 2014, 36(7): 65-66.
[15]	LI Peng. Reformation of boiler flue gas waste heat recovery device for energy saving [J]. Huadian Technology, 2014, 36(1): 74-76.

Reason analysis of high exhausted gas temperature of a boiler and its countermeasures

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments