CAJ | 학술논문

燃煤发电是我国的主要电力方式,分析燃煤电厂的能量利用情况对节能减排有重要作用.本文以国际典型亚临界燃煤电厂和我国西南地区某亚临界燃煤电厂为计算实例,结合 Aspen Plus 软件和有效能分析法,对其整个热力过程进行系统模拟计算和能量分析,得出每个设备的有效能损失.结果表明,热力过程中有效能损失最大的部位在锅炉;锅炉中有效能损失最大的是煤的燃烧过程,其次为锅炉受热面的换热过程.通过对国内外两个电厂的比较,发现国内亚临界燃煤电厂有效能效率较国外低约6个百分点.
연매발전시아국적주요전력방식,분석연매전엄적능량이용정황대절능감배유중요작용.본문이국제전형아림계연매전엄화아국서남지구모아림계연매전엄위계산실례,결합 Aspen Plus 연건화유효능분석법,대기정개열력과정진행계통모의계산화능량분석,득출매개설비적유효능손실.결과표명,열력과정중유효능손실최대적부위재과로;과로중유효능손실최대적시매적연소과정,기차위과로수열면적환열과정.통과대국내외량개전엄적비교,발현국내아림계연매전엄유효능효솔교국외저약6개백분점.
Systematic analysis of its energy consumption is important in energy conservation and emission reduction in the coal-fired power plants. This paper analyzed the energy consumption in a typical power plant and a specific power plant in southwest China. Aspen Plus software and energy analysis methods were used in the simulation and calculation of energy consumption. The results revealed that the largest energy consumption of the system occurs in the boiler,in which most energy was consumed in coal combustion. A great amount of energy is lost in the heat exchanging process on the surfaces in the boiler. The energy efficiency in the subcritical coal-fired power plant in southwest China is about 6 percent lower.