化工学报2019，Vol.70Issue(1)：214-226,13.DOI:10.11949/j.issn.0438⁃1157.20180445
天然气内重整和外重整下SOFC多场耦合三维模拟分析
Simulation analysis of multi-physics coupling SOFC fueled nature gas in the way of internal reforming and external reforming
摘要
Abstract
Internal reforming (IR) and external reforming (ER) are two modes of operation when solid oxide fuel cells (SOFCs) are fueled by natural gas (NG). The performance and efficiency of batteries in different reforming modes are also different. 3D unit cell of ER-SOFC and IR-SOFC model fueled NG was designed which consist of Ni-YSZ//YSZ//LSCF-GDC based on multi-physics coupling software COMSOL Multiphysics? 5.2. The simulation results show that: the power density, fuel utilization and energy utilization of IR-SOFC are higher than ER-SOFC;methane steam reforming occurs mainly in the regions near fuel inlet of anode side; different from the reduction of concentration of H2 and CO in ER-SOFC, the concentration of H2 and CO rises first and then decreases in IR-SOFC; the temperature of IR-SOFC change dramatically more than ER-SOFC and the temperature gradient of IR-SOFC is highest at the anode inlet area; more closer of distance near the current collector, more higher ion current density on the surface between cathode and electrolyte; carbon deposition do not happen in ER-SOFC at anode side, whereas it take place as a result of CH4 thermal decomposition reaction in IR-SOFC which carbon activity was more than 270.关键词
天然气/计算机模拟/内重整/外重整/固体氧化物燃料电池Key words
nature gas/computer simulation/internal reforming/external reforming/solid oxide fuel cells分类
化学化工引用本文复制引用
谢静,徐明益,班帅,孙晖,周红军..天然气内重整和外重整下SOFC多场耦合三维模拟分析[J].化工学报,2019,70(1):214-226,13.基金项目
国家自然科学基金项目(21706279) （21706279）
