Effects of CO2 and CH2 Adding on Steam Gasification of Biomass Renewable Energy for Syngas Production Considering Parametric Investigation

Biomass gasification technology is used as one of the energy sources due to its low effects on the environment and reducing pollution. This technology is able to produce gas with the highest content of hydrogen. Hydrogen can be used as a fuel and an important carrier of energy due to its stability and lack of negative effects on the environment. This study used wood sawdust as biomass to produce syngas and investigated the effect of adding carbon dioxide and methane gases to the Gibbs reactor. Aspen Plus software is used for steam gasification modelling. According to the results, the performed modelling is able to predict the experimental data well. When the carbon dioxide to biomass ratio (C/B) rises, the mass flow rates (MFR) of hydrogen and Methane fall while those of carbon dioxide and carbon monoxide increase. The decrease in hydrogen MFR with changes from C/B = 0 to C/B = 1 in modes a, b, c and d is equal to 17.51, 16.39, 29.57 and 24.84%, respectively. The mass flow of hydrogen increases as the Methane to biomass ratio (M/B) rises, whereas the MFR of carbon dioxide shows a declining pattern. As M/B increases from 0 to 1 in the Gibbs reactor for modes a, b, c and d, the hydrogen MFR increases by 265, 243, 297 and 305%, respectively.