A kinetic study and factor analysis of solar thermochemical membrane reactors for syngas production  

作　　者：Jiaxin XING Chao XU Xiangyu SUN Xin XIA Fei JIN Qiongqiong JIANG Jiale GAO 

机构地区：[1]Key Laboratory of Power Station Energy Transfer Conversion and System of MOE,School of Energy Power and Mechanical Engineering,North China Electric Power University,Beijing 102206,China [2]Department of Chemistry,University College London,London WC1H 0AJ,UK [3]School of Chemistry and Chemical Engineering,Ningxia Key Laboratory of Solar Chemical Conversion Technology,State Ethnic Affairs Commission,North Minzu University,Yinchuan 750021,China

出　　处：《Science China(Technological Sciences)》2025年第1期203-217,共15页中国科学(技术科学英文版)

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.52090062,52306242)。

摘　　要：Solar thermochemical conversion technologies are promising for effectively utilizing solar energy by capturing the full spectrum of solar radiation.To overcome the challenges of low energy conversion efficiency and intermittency faced by solar thermochemical conversion,these technologies can be effectively integrated with membrane reactor technology.Although the performance of solar thermochemical membrane reactors has been experimentally tested,the chemical reactions and oxygen transport mechanisms during the energy conversion process remain poorly understood.This study introduces a resistance network model to elucidate the interactions between interfacial reactions and bulk diffusion during simultaneous oxidationreduction reactions on both sides of the membrane.We analyzed the oxygen flux of the membrane reactor under various operating conditions using this model to identify the reaction/transport-limiting side of the overall process.The most effective solar membrane reactor configuration utilizes natural gas and CO_(2),facilitating clean conversion of fossil fuels with significant advantages in fuel production and energy efficiency.Introducing CH_4 lowers the overall reaction temperature,maintains low oxygen partial pressure on the sweep side,and produces a synthesis gas with a 2:1 H_2/CO molar ratio.Finally,a sensitivity analysis was used to explore the relationship between overall fuel production performance and operational parameters,highlighting the critical role of this research in enhancing the reaction and transport performance of membrane reactors and advancing the development of solar-driven thermochemical fuel production technologies.

关 键 词：THERMOCHEMISTRY oxygen-permeable membrane membrane reactor chemical kinetics 

分 类 号：TE665.3[石油与天然气工程—油气加工工程] TK519[动力工程及工程热物理—热能工程]