Published in Applied Energy
The study on “Demonstrating High-efficiency CO2 Methanation” by Shogo Sayama and Seiji Yamamoto, was published in Applied Energy.
CO2 methanation is an attractive technology for recycling industrial CO2. We have been developing the system which converts CO2 into CH4 (the major component of city gas), using H2 derived from renewable energy. This study realized more than 99% CO2 conversion (conversion ratio of CO2→CH4) at a low pressure of 200 kPa・G, while recovering more than 70% of the redundant heat. Although some other studies also reached high conversion thus far, this study realized it at the low reaction pressure and high heat recovery ratio, applying reaction control by splitting the H2 feed and thermal control by branching the carrier flow. It consequently leads to high energy efficiency of the conversion process. The present achievement promises to contribute to the realization of zero CO2 emissions from factories.
Title: A 6-kW Thermally Self-sustained Two-stage CO2 Methanation Reactor: Design and Experimental Evaluation of Steady-state Performance Under Full-load Conditions
Authors: Sayama, S., Yamamoto, S.
Journal Name: Applied Energy
Published: September 5, 2022
https://doi.org/10.1016/j.apenergy.2022.119773