Guerrero Fabián, Espinoza Lorena, Ripoll Nicolas, Lisbona Pilar, Arauzo Inmaculada, Toledo Mario
Department of Mechanical Engineering, Universidad Técnica Federico Santa Maria, Valparaíso, Chile.
Department of Agricultural and Forestry Engineering, Universidad de Valladolid, Valladolid, Spain.
Front Chem. 2020 Mar 13;8:145. doi: 10.3389/fchem.2020.00145. eCollection 2020.
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 (CH:CO), 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 CO concentrations on biogas composition showed higher H productions than on pure methane (100:0), mainly due to CO 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 CO utilization.
通过富沼气 - 空气混合物的惰性多孔介质燃烧来生产合成气的过程进行了实验研究，重点在于二氧化碳的利用和工艺效率。模拟典型沼气组成100:0、70:30、55:45和40:60（CH:CO）的不同天然气与二氧化碳的气体混合物，在当量比φ = 1.5和φ = 2.0较高时，针对燃烧波温度和速度以及化学浓度产物进行了对比分析。沼气组成中不同的CO浓度相比于纯甲烷（100:0）显示出更高的H产量，这主要归因于CO重整反应。此外，通过沼气过滤燃烧的合成气产量、氢气产率和工艺效率高于甲烷过滤燃烧的情况。沼气热化学转化的结果显示了一种用于CO利用的替代且有前景的非催化技术。
