铁前系统能耗分析与评价

doi:10.13228/j.boyuan.issn0449-749x.20230230

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Abstract The energy conservation progress of steel industry in China has gone through several stages, such as single equipment energy conservation, system energy conservation and the popularization of major energy-saving technologies,to the current stage of energy flow network operation and improving energy conversion functions. The energy conservation of steel industry in China has made remarkable achievements. The energy conservation and emission reduction situation faced by the steel industry is becoming increasingly severe. In recent years, although the comprehensive energy consumption per ton of steel has still been reduced, the decrease has been very small, and even rebounded slightly in some years. Under the current theory and technologies, it is an obvious fact that the energy saving potential is decreasing, and it is very important to accurately determine the possibility and potential of energy saving. The pre-ironmaking system is the most significant energy consumption system of the steel manufactory process. Therefore, the pre-ironmaking system energy consumption is analyzed as an example, and the concepts of minimum energy consumption and standard energy consumption are proposed. Based on factory practice, the basis for determining ideal operating condition and standard operating condition, as well as the calculation method of theoretical minimum energy consumption and standard energy consumption are provided. The theoretical minimum energy consumption and standard energy consumption, as well as the actual energy consumption and standard energy consumption, are comparatively analyzed. Based on the analysis of the differences between ideal operating condition and standard operating condition, as well as between actual operating condition and standard operating condition, the ways and directions for energy saving for the coking process, sintering process, and iron-making process are provided respectively; Using the e-p analysis method under the theory of system energy saving, the influencing factors of the pre-ironmaking system, such as the system structure, the equipments scale, the raw material and fuel conditions, the energy-saving technology application, and the energy flow network are analyzed; and the measures and directions of energy conservation are proposed. The research results can provide theoretical support for the reasonable evaluation of the energy-saving potential of the pre-ironmaking system in the steel industry.

Key words： pre-ironmaking system minimum energy consumption energy saving evaluation ideal operation condition standard operation condition

Received: 23 May 2022

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	DU Xueqiang
	LI Xiuping
	ZHOU Jicheng
	SHANGGUAN Fangqin

Cite this article:

DU Xueqiang,LI Xiuping,ZHOU Jicheng等. Energy consumption analysis and energy efficiency evaluation of iron-making system[J]. Iron and Steel, 2023, 58(10): 163-171.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20230230 OR http://www.chinamet.cn/Jweb_gt/EN/Y2023/V58/I10/163

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