Sorption-enhanced chemical looping oxidative steam reforming of methanol for on-board hydrogen supply

Green Energy & Environment

Zhao Sun¹  Di Wei¹  Zhiqiang Sun²  Sam Toan³  Liang Zeng³ 

[1] Technology and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin, 300072, China;Department of Chemical Engineering, University of Minnesota, Duluth, MN, 55812, USA;;Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering &

关键词: Sorption-enhanced reforming;    Chemical looping;    Hydrogen production;    Ultra-low-concentration CO;   

DOI  :  

来源: DOAJ

【 摘 要 】

Hydrogen is an indispensable energy carrier for the sustainable development of human society. Nevertheless, its storage, transportation, and in situ generation still face significant challenges. Methanol can be used as an intermediate carrier for hydrogen supplies, providing hydrogen energy through instant methanol conversion. In this study, a sorption-enhanced, chemical-looping, oxidative steam methanol-reforming (SECL-OSRM) process is proposed using CuO–MgO for the on-board hydrogen supply, which could be a promising method for safe and efficient hydrogen production. Aspen Plus software was used for feasibility verification and parameter optimization of the SECL-OSRM process. The effects of CuO/CH3OH, MgO/CH3OH, and H2O/CH3OH mole ratios and of temperature on H2 production rate, H utilization efficiency, CH3OH conversion, CO concentration, and system heat balance are discussed thoroughly. The results indicate that the system can be operated in auto-thermal conditions with high-purity hydrogen (99.50 vol%) and ultra-low-concentration CO (< 50 ppm) generation, which confirms the possibility of integrating low-temperature proton-exchange membrane fuel cells (LT-PEFMCs) with the SECL-OSRM process. The simulation results indicate that the CO can be modulated in a lower concentration by reducing the temperature and by improving the H2O/CH3OH and MgO/CH3OH mole ratios.

【 授权许可】

Unknown