王长顺,宋昕洋,杨帆,乔焱,李洋,高月,李鹏飞

• 1:辽宁石油化工大学石油天然气工程学院
• 2:朝阳红山化工有限责任公司

摘要(Abstract)：

为解决以甲烷作为燃料的固体氧化物电池余热利用、碳捕集以及液化天然气冷能利用问题，建立了一种新型的冷热电联供系统。该系统包括改进再压缩超临界混合工质布雷顿循环、跨临界CO_2回热朗肯循环和二级混合工质有机朗肯循环，对循环系统进行热力学分析、设备(火用)分析、经济成本分析，并利用遗传算法对系统参数进行多目标优化。仿真分析结果表明：提升改进再压缩超临界混合工质布雷顿循环的膨胀机入口压力、跨临界CO_2回热朗肯循环的膨胀机入口温度与二级朗肯循环中R14的质量分数可提升系统循环净功、热效率、(火用)效率并降低平均单位成本；在最优工况条件下，系统热效率、(火用)效率、平均单位成本分别为64.70%、47.85%、24.20美元/GJ。

关键词(KeyWords)： 液化天然气;冷热电联产;混合工质;多目标优化;经济分析

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目（52006094）;; 辽宁省教育厅基本科研项目（LJKMZ20220725） ~~

作者(Author): 王长顺,宋昕洋,杨帆,乔焱,李洋,高月,李鹏飞

DOI: 10.19666/j.rlfd.202403118

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