Mathematical modeling and optimization of DME synthesis in direct process

This study investigates the viability of utilizing CO۲ as a precursor for dimethyl ether (DME) production, presenting it as a promising eco-friendly fuel alternative. Employing a water vapor selective membrane in a one-step DME synthesis process, we conducted comprehensive modeling and simulation analyses. Our study validated the efficacy of incorporating the water-selective membrane, showcasing a notable ۱۳.۶۴% increase in DME production and an ۸.۸۶% enhancement in CO۲ conversion rates. Subsequent scrutiny of input synthesis gas flow parameters such as temperature, pressure, and gas hourly space velocity (GHSV), along with overall membrane permeance, identified optimal operational conditions. Notably, a temperature of ۴۷۸ K, maximized pressure within membrane capacity, and a GHSV of ۳ h-۱ were deemed optimal. Furthermore, we observed a direct correlation between higher membrane permeability and increased vapor absorption, resulting in elevated DME production.

Keywords:

DME production , Membrane reactor , modeling , CO۲ utilization