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针对目前存在的关于电力驱动和蒸汽驱动高炉鼓风系统能效高低的争议,分别建立了电力驱动和蒸汽驱动高炉鼓风系统的能量利用效率模型和单耗分析模型,从理论上研究了两种驱动系统在能源效率、能源消耗量上的差异。结果表明,电力驱动高炉鼓风系统和蒸汽驱动高炉鼓风系统的能源效率之间存在一定的重合区间,电力驱动高炉鼓风系统的上限能效近似等于蒸汽驱动高炉鼓风系统的下限能效。随着蒸汽温度和压力的提高,高炉鼓风驱动系统蒸汽的消耗量均降低。当驱动的鼓风机确定时,驱动系统的理论最低单耗是特定参数蒸汽的固有特性,与驱动方式和过程无关。鼓风驱动系统的理论最低蒸汽单耗随高炉炉容的增大而减小,随蒸汽温度和压力的升高而降低。
In view of the existing controversy about the energy efficiency of the blast furnace blast furnace system driven by electricity and steam, the energy efficiency model and the unit consumption analysis model of the blast furnace air-driven and steam-driven blast furnace systems are respectively established. In theory, two kinds of driving System differences in energy efficiency and energy consumption. The results show that there is a certain coincidence interval between the power efficiency of the blast furnace blast furnace system and the steam driven blast furnace blast furnace system. The upper limit efficiency of the blast furnace blast furnace system is approximately equal to the lower limit energy efficiency of the blast furnace blast furnace system. As the steam temperature and pressure increase, the blast furnace blower drive system steam consumption are reduced. When the driven blower is determined, the theoretical minimum power consumption of the drive system is the inherent characteristic of the steam of a particular parameter, independent of the drive mode and process. The theoretical minimum steam consumption of the blower drive system decreases with the increase of blast furnace capacity and decreases with the rise of steam temperature and pressure.