Syngas Production From the Reforming of Typical Biogas Compositions in an Inert Porous Media Reactor

• Main Authors: Fabián Guerrero, Lorena Espinoza, Nicolas Ripoll, Pilar Lisbona, Inmaculada Arauzo, Mario Toledo
• Format: Article
• Language: English
• Published: Frontiers Media S.A. 2020-03-01
• Series: Frontiers in Chemistry
• Subjects: syngas production; reforming; filtration combustion; CO2 utilization; biogas
• Online Access: https://www.frontiersin.org/article/10.3389/fchem.2020.00145/full

Syngas production by inert porous media combustion of rich biogas–air mixtures was studied experimentally, focusing on carbon dioxide utilization and process efficiency. Different gas mixtures of natural gas and carbon dioxide, which simulated a typical biogas composition of 100:0, 70:30, 55:45, and 40:60 (CH4:CO2), were comparatively analyzed considering combustion waves temperatures and velocities, and chemical concentrations products, at high equivalence ratios of φ = 1.5 and φ = 2.0. Different CO2 concentrations on biogas composition showed higher H2 productions than on pure methane (100:0), mainly due to CO2 reforming reactions. Also, syngas production, hydrogen yields, and process efficiency by means of biogas filtration combustion were higher than under methane filtration combustion. Results of the thermochemical conversion of biogas show an alternative and promising non-catalytic technique to CO2 utilization.