天然气储气库压力能发电耦合冷能利用工艺设计与研究  

Design and Research on the Process of Natural Gas Storage Pressure Energy Generation coupled with Cold EnergyUtilization

作　　者：程士坚 彭曦[2] 祝玉松 顾鹏程 李乾 CHENG Shi-jian;PENG Xi;ZHU Yu-song;无(Engineering Technology Research Institute of Xinjiang Oilfield Company;South China University of Technology;ZNC Technology Co.,Ltd.)

机构地区：[1]新疆油田公司工程技术研究院 [2]华南理工大学 [3]中新碳合科技(北京)有限公司

出　　处：《电站系统工程》2024年第4期69-71,73,共4页Power System Engineering

摘　　要：结合储气库天然气压力能发电及伴生冷能利用,提出适用于储气库场景的天然气压力能发电耦合冷能利用工艺,冷能用于天然气液化,提高能源转化效率的同时提升项目经济性。通过Aspen Plus软件进行工艺建模,以[火用]分析方法对比优化前后方案性能。结果表明,天然气压力能发电耦合冷能利用工艺既提高发电功率,系统[火用]效率提高24.56%;回收冷能用于作为LNG工艺冷源,每年可节电3.433×10^(7)kWh,节能降碳效果良好。In order to utilize the associated cold energy in the process of natural gas pressure energy power generation in gas storage,a process of coupling cold energy utilization of natural gas pressure energy power generation and cold energy utilization for natural gas liquefaction process is proposed in this study,which can improve energy conversion efficiency and project economy.It is essential to model the process by using Aspen Plus software,and evaluate the Exergy efficiency&Exergy loss accordingly.The results showed that compared with a single pressure energy generation system,the exergic efficiency of natural gas pressure energy generation coupled with cold energy utilization technology increased by 24.56%.On the other hand,the recovered cooling energy is used as the cooling source of LNG process,which saves electricity up to 3.433×10^(7)kWh per year,with a good effect of energy saving and carbon reduction.

关 键 词：储气库 压力能发电 冷能利用 [火用]分析 多能互补 

分 类 号：TE646[石油与天然气工程—油气加工工程]