高校化学工程学报2025，Vol.39Issue(6)：960-971,12.DOI:10.3969/j.issn.1003-9015.2025.00.048
有机液体脱氢与SOFC耦合系统的热力学分析
Thermodynamic analysis on a coupled system of organic liquid dehydrogenation and SOFC
摘要
Abstract
The solid oxide fuel cell(SOFC)fueled by hydrogen,as an efficient and environmentally friendly ener-gy conversion technology,has demonstrated significant potential and advantages in the transportation sector in re-cent years.However,for its large-scale application in transportation,it is necessary to overcome the difficulties in hydrogen storage and transport,as well as inadequate supporting infrastructure like hydrogen refueling stations.Liquid organic hydrogen carrier(LOHC)technology is expected to address these challenges.When the dehydrogenation process of LOHC is carried out in mobile sources,the required heat can be effectively supplied by the high-temperature waste gas generated by the SOFC.Based on this,the work proposed a coupled system integra-ting LOHC dehydrogenation with SOFC(LOHC-SOFC).The primary objective of this system was to meet the hy-drogen demand of SOFC while harnessing the waste heat generated by SOFC to meet the thermal requirements of the LOHC dehydrogenation reaction,thereby enhancing the overall energy utilization efficiency.To this end,this paper used Aspen Plus software to establish a thermodynamic simulation and calculation model for the LOHC-SOFC sys-tem,maintaining a constant output power of SOFC.A comprehensive energy and exergy analysis of the system was then conducted.The results showed that under nominal condition,the electrical efficiency of SOFC was 46.06％,while the electrical efficiency and the exergy efficiency of the coupled system were 44.79％,and 47.59％,respec-tively.The system's exergy loss was 4.034 kW,primarily attributed to the air preheater,SOFC and afterburner.In addition,the effects of main parameters such as the hydrogen storage carrier types,the operating temperature and pressure of SOFC on the outputs and thermodynamic performance indicators of system were investigated.These in-sights offer valuable guidance and suggestions for the design of LOHC-SOFC system.关键词
过程建模/热集成/热力学分析/有机液体储氢/固体氧化物燃料电池Key words
process modeling/heat integration/thermodynamic analysis/liquid organic hydrogen carrier/solid oxide fuel cell分类
化学化工引用本文复制引用
邱美兰,康丽霞,刘永忠..有机液体脱氢与SOFC耦合系统的热力学分析[J].高校化学工程学报,2025,39(6):960-971,12.基金项目
国家自然科学基金(22378323) （22378323）
陕西省共性技术研发平台项目(2025ZY1-GXJS-03) （2025ZY1-GXJS-03）
宁德时代创新实验室开放基金资助(21C-OP-202305). （21C-OP-202305）
