Experimental Research on Vibration Control of Ultra Low Nitrogen Gas Boilers

doi:10.11930/j.issn.1004-9649.202003166

Abstract

Abstract: In recent years, the state and local administration of China have issued related policies successively in which it is required for gas boilers to achieve ultra-low nitrogen emissions. At present, the technical route of low-nitrogen gas burner coupled with flue gas recirculation system is chosen by most of the retrofits of high-power gas-fired boilers. However, boiler vibration generally occurs after the retrofit. On the basis of two types of high-power gas-fired boiler low-nitrogen retrofit projects, the effects of three major factors, i.e., the fuel ratio of the low-nitrogen gas burner, the oxygen content of the combustion air, and the combustion flame length on the vibration of the boiler were studied respectively. And then, the technical retrofit principles and specific design requirements applicable for this type of boiler combustion system are proposed, which will provide strong technical support for the follow-up retrofit tasks.

Key words: ultra-low nitrogen, high power, burner, boiler vibration, fuel ratio, oxygen content, flame length

JI Haimin, LI Wenfeng, YANG Dong, ZHANG Jihao, DONG Fangqi, ZHOU Qulan, ZHANG Yifan. Experimental Research on Vibration Control of Ultra Low Nitrogen Gas Boilers[J]. Electric Power, 2021, 54(3): 185-190.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202003166

https://www.electricpower.com.cn/EN/Y2021/V54/I3/185

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