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1. 新疆大学电气工程学院
2. 西北能源碳中和教育部工程研究中心
3. 新疆天池能源有限责任公司准东能源研究院
Published:2025
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[1]马小晶,王其微,胡丽娜,等.660 MW超超临界燃煤机组烟气余热深度利用系统经济性分析[J].新疆大学学报(自然科学版中英文),2025,42(04):485-495.
[1]马小晶,王其微,胡丽娜,等.660 MW超超临界燃煤机组烟气余热深度利用系统经济性分析[J].新疆大学学报(自然科学版中英文),2025,42(04):485-495. DOI: 10.13568/j.cnki.651094.651316.2024.03.19.0001.
DOI:10.13568/j.cnki.651094.651316.2024.03.19.0001.
以某国产典型660 MW机组为案例,根据能量梯级利用理论,设计了针对不同季节的烟气余热深度利用系统,即:夏季联合烟气旁路系统、冬季联合烟气旁路+常规暖风器、冬季烟气旁路联合暖风器,建立了系统的经济性分析模型.与常规烟气余热利用方案进行对比,分别进行变工况分析.结果表明:机组在夏季变工况下最高可降低标准煤耗率2.42 g/kWh;冬季变工况下采用烟气旁路联合暖风器更优,最高可降低标准煤耗率3.42 g/kWh.该烟气余热深度利用系统的总投资约为1 184.10万元,全年平均可节省6 688.86吨标准煤,年节煤收益501.66万元,CO2等气体减排超过1.59万吨,节能环保效益显著,在工程上具有可行性.
This article takes a typical domestic-built 660 MW unit as a case study. Based on the principle of energy cascade utilization
a deep utilization system for flue gas waste heat is designed for different seasons.That is
summer combined flue gas bypass system
winter combined flue gas bypass+conventional heater
and winter combined flue gas bypass with heater. A systematic economic analysis model is established. Compared with conventional flue gas waste heat utilization schemes
variable operating condition analyses are conducted separately.Research results indicate that the unit can reduce the standard coal consumption rate by up to 2.42 g/kWh under variable operating conditions in summer. It is more optimal to use a flue gas bypass combined with a auxiliary heater under variable operating conditions in winter
which can reduce the standard coal consumption rate by up to 3.42 g/kWh. The total investment for the deep utilization system of flue gas waste heat is about 11.841 0 million CNY. On average
6 688.86 tons of standard coal can be saved throughout the year. The annual coal saving income is 5.016 6 million CNY. CO2 and other gases are reduced more than 15 900 tons per year. This plan has significant energy-saving
economic
and environmental benefits
and is feasible in engineering.
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