Synthetic Natural Gas Obtained from Biomass Derived Syngas: a Study on Different Technological Approaches

Biomass gasification is a thermochemical process that produces a gaseous end product known as syngas, the main components of which are CO, CO2, and H2. Starting from syngas it is possible to upgrade this mixture into Synthetic Natural Gas (SNG) through a catalytic methanation process. In this work, a thermodynamic study was conducted to see how operative parameters such as the temperature of the methanation reactor, the quality of the syngas (related to different gasification technologies), and the presence of a conditioning stage based on water gas shift reaction, can influence the output variables as the conversion degree of the reactants, the mass yield and the low heating value of the final products.