潘本艺¹,杨帆¹,周莉²,商丽艳³,李萍³

• 1:辽宁石油化工大学 石油天然气工程学院，辽宁 抚顺 113001
• 2:辽宁石油化工大学 石油化工学院，辽宁 抚顺 113001
• 3:辽宁石油化工大学环境与安全工程学院，辽宁 抚顺 113001

摘要(Abstract)：

针对梯级利用液化天然气（LNG）在气化过程中释放冷能的同时回收烟气中的二氧化碳（CO₂）问题，提出一套氮气回热布雷顿（Brayton）循环与乙烯-丙烷二级有机朗肯循环（ORC）联合的冷热电三联供系统。采用数值模拟软件对系统进行模拟计算。分析蒸发压力、蒸发温度、氮气质量流量对系统性能的影响。模拟结果表明，在氮气质量流量为45 000 kg·h^-1时，系统的净输出功可达到2 834.1 kW，热效率为42.7%，㶲效率为35.1%。经济分析结果表明，系统的年度净资产（NE）为4 209 633.277$，折旧回收期（DPP）为4.23 a。研究成果对环境保护具有重要意义。

关键词(KeyWords)： 液化天然气;热力学分析;经济分析;冷热电三联供

Abstract:

Keywords:

基金项目(Foundation): 辽宁省博士科研启动基金计划（2019-BS-159）；辽宁省教育厅科学研究经费项目（L2019024）；辽宁省教育厅重点科研项目（L2020002）。

作者(Author): 潘本艺¹,杨帆¹,周莉²,商丽艳³,李萍³

DOI: 10.3969/j.issn.1003-9015.2021.04.016

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