Innovative non-oxidative methane dehydroaromatization via solar membrane reactor

摘要

A novel solar-driven Non-Oxidative Methane Dehydroaromatization (NO-MDA) system integrated with membrane reactor is proposed in this study. NO-MDA driven by solar energy is a promising method to directly product benzene and pure hydrogen, in which solar thermal energy is converted into chemical energy. In this study, kinetic and thermodynamic analyses of NO-MDA via hydrogen permeation membrane (HPM) reactor were conducted based on numerical simulation. The partial pressure, conversion rate and thermodynamic efficiency under different temperatures (600-800 °C) and permeate pressures (0.01-1 bar) were studied and analyzed. Pure hydrogen and a near complete conversion rate (99.9%) are theoretically obtained due to the separation of hydrogen via HPM reactor, which shifts the reaction equilibrium forward for higher conversion rate. The first-law thermodynamic efficiency, the solar-to-fuel efficiency, and the exergy efficiency can reach as high as 85.89%, 33.72%, and 88.12%, respectively. This study exhibits the feasibility of efficient NO-MDA via HPM reactor driven by solar energy.