Utilization of Refuse Derived Fuel for Energy Recovery Processes: Prediction of Environmental Emissions and Thermal Behaviour in Combustion Processes
Abstract In the present study, the environmental emissions from co-combustion of refuse derived fuel (RDF) in cement plants and coal-fired power plants are predicted using mass and energy flow modeling. Mumbai was considered as study area and RDF characteristics were assessed using MSW composition in Mumbai. The modeling results suggested that with increase in RDF share in fuel mixture, significant reduction in environmental parameters such as winter smog, global warming and acidification potentials could be achieved, though the electricity and heat generation were reduced. This problem can be overcome by improving the quality of RDF. Moreover, thermal gravimetric analysis (TGA) of individual RDF components (compostable organic matter, paper, wood and plastic) was carried out in oxidative environment to understand their thermal stability. Average activation energies for plastic, wood and compostable organics (98.6–183 kJ/mol) were comparable to those reported for coal. The results suggest that coal and RDF co-combustion should not affect the combustion profile. Moreover, high plastic content in RDF can assist in control of combustion process and also can enhance its calorific value.