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Co-utilization of coal and biomass in a power plant can reduce the overall CO2 emission by partly displacing fossil-fuel combustion with near-carbon-neutral combustion of biomass. Computational fluid dynamics (CFD) modeling of co-gasification is conducted using a validated gasification model to examine the effect of biomass amount on the co-gasification process in a Shell gasifier. In the sub-models...
The coal–biomass mixed char co-gasification with H2O in the presence of H2 was investigated under atmospheric conditions using a tube furnace and gas analyzer. Various partial pressures of H2O and H2 were tested within a temperature range of 825–900°C. Bituminous coal, pineapple sawdust, and a mixture of these two having a mass ratio of 1:1 were used to prepare chars. Random pore model was utilized...
This short communication reports the results of an experimental study that is an expansion of two previous studies (Jeong et al., 2014, 2015). In this study, mixtures of coal and biomass with different mass ratios were co-gasified with CO2 or H2O. Five different partial pressure conditions between 0.2 and 0.6bar were tested for both gasifying agents. Random pore model was used to interpret the carbon...
This short communication reports on an experimental study that is an expansion of our previous study (Jeong et al., 2014). In the present study, the coal–biomass blended char was co-gasified with H 2 O. Similar to the results of our previous study, the improvement of the blended char’s reactivity with increasing the biomass amount was observed. The volume reaction model (VRM), shrinking core...
Co-gasified biomass and coal can be considered a potential fuel base for gasification and offers the advantage of a reduction in CO 2 emissions. In addition, use of biomass could contribute to a reduction in fossil fuel dependency. In this study, a mixture of coal and biomass was placed in a lab-scale tube furnace and co-pyrolyzed to be transformed to a char under nitrogen atmosphere. Three...
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