| 燃气-蒸汽联合循环余热回收系统性能研究 |
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| 引用本文： | 闫明月,刘德俊,商丽艳,韦丽娃,陈树军.燃气-蒸汽联合循环余热回收系统性能研究[J].工程热物理学报,2021(4):854-864. |
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| 作者姓名： | 闫明月 刘德俊 商丽艳 韦丽娃 陈树军 |
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| 作者单位： | 辽宁石油化工大学石油天然气工程学院;辽宁石油化工大学化学化工与环境学部;辽宁石油化工大学机械工程学院;中国石油大学（华东）储运与建筑工程学院 |
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| 基金项目： | 国家自然科学基金项目(No.51306210)。 |
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| 摘 要： | 燃气发电是我国城市供电的主要形式之一,针对LNG接收站一体的电厂发电模式进行研究,提出一种新型燃气-蒸汽联合循环热电联供系统,利用超临界CO2布雷顿循环结合有机朗肯循环(ORC)辅助发电,将LNG作为冷源,对烟气余热进行三级利用。通过构建热力学和经济模型,以Aspen Plus软件模拟值为基础,结果表明:在消耗燃料1.704 kg/s(LNG)的条件下,联合循环净发电功率可达45 MW,供热量41.5 MW,余热利用率,热效率和?效率分别为88.50%,52.79%和46.69%。结合热-经济学与参数分析,利用Matlab优化后的最小单位发电成本为0.1529 CNY/kWh。考虑到碳排放价格,供电、供热、供气收益,燃料价格和设备成本,电厂每年的理想收益可达2989.5万元。
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| 关 键 词： | 天然气 热电联产 超临界二氧化碳 热-经济分析 优化 |
Research on Performance of Gas-Steam Combined Cycle Waste Heat Recovery System |
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| YAN Ming-Yue,LIU De-Jun,SHANG Li-Yan,WEI Li-Wa,CHEN Shu-Jun.Research on Performance of Gas-Steam Combined Cycle Waste Heat Recovery System[J].Journal of Engineering Thermophysics,2021(4):854-864. |
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| Authors: | YAN Ming-Yue LIU De-Jun SHANG Li-Yan WEI Li-Wa CHEN Shu-Jun |
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| Institution: | (College of Petroleum Engineering,Liaoning Shihua University,Fushun 113001,China;Department of Chemistry,Chemical Engineering and Environment,Liaoning Shihua University,Fushun 113001,China;School of Mechanical Engineering,Liaoning Shihua University,Fushun 11300,China;College of Pipeline and Civil Engineering,China University of Petroleum(East China),Qingdao 266555,China) |
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| Abstract: | Gas-fired power generation is one of the main forms of urban power supply in China.A new type of gas-steam combined cycle cogeneration system is studied for the power generation mode of an integrated LNG receiving station,using supercritical CO2 Brayton cycle combined with organic Rankine cycle(ORC)auxiliary power generation,using LNG as a cold source,and three-stage utilization of flue gas waste heat.By constructing thermodynamic and economic models,based on Aspen Plus software simulation,the results show that:under the condition of fuel consumption of 1.704 kg/s(LNG),the combined cycle net power generation can reach 45 MW,the heat supply is 41.5 MW,the waste heat utilization rate,energy efficiency and exergy efficiency are 88.50%,52.79%and 46.69%,respectively.Combining thermo-economics and parameter analysis,Matlab is used to optimize the minimum unit power generation cost.Taking into account the price of carbon emissions,the benefits of power supply,heating and gas supply,fuel prices and equipment costs,the annual ideal revenue of power plants can reach 2989.5 million yuan. |
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| Keywords: | natural gas combined heat and power supercritical CO2 thermo-economic analysis optimization |
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