Steam gasification of municipal solid waste (MSW) using a CaO additive was investigated in a batch-type
fixed bed, to examine the effects of CaO addition on the heat transfer properties, the devolatilization characteristics
of MSW, CO2 adsorption capacities of CaO, and char gasification in the presence of steam. Evolutionary
behaviors of syngas molar compositions and individual gas flow rates at both MSW
devolatilization and char gasification stages were examined at different CaO/MSW mass ratios with a
fixed MSW mass. The effect of temperature varying from 700 to 900 C was also considered in this test.
In both stages, hydrogen concentrations were found to increase and CaO was found to have a catalytic
effect. Finally, using from the experimental observations and the results of SEM/EDS analyses of the
obtained residues, the mechanism underlying the catalytic effects of calcium species in both reaction
stages was discussed.
Steam gasification of municipal solid waste (MSW) using a CaO additive was investigated in a batch-type
fixed bed, to examine the effects of CaO addition on the heat transfer properties, the devolatilization characteristics
of MSW, CO2 adsorption capacities of CaO, and char gasification in the presence of steam. Evolutionary
behaviors of syngas molar compositions and individual gas flow rates at both MSW
devolatilization and char gasification stages were examined at different CaO/MSW mass ratios with a
fixed MSW mass. The effect of temperature varying from 700 to 900 C was also considered in this test.
In both stages, hydrogen concentrations were found to increase and CaO was found to have a catalytic
effect. Finally, using from the experimental observations and the results of SEM/EDS analyses of the
obtained residues, the mechanism underlying the catalytic effects of calcium species in both reaction
stages was discussed.
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