Major components of Waste-to-Energy Processes Front end MSW pre-processing is used to prepare MSW for treatment and separate any recyclables Conversion unit (reactor) Gas and residue treatment plant (optional) Energy recovery plant (optional): Energy / chemicals production system includes gas turbine, boiler, internal combustion engines for power production. Alternatively, ethanol or other organic chemicals can be produced Emissions clean up Incineration Combustion of raw MSW, moisture less than 50% Sufficient amount of oxygen is required to fully oxidize the fuel Combustion temperatures are in excess of 850 o C Waste is converted into CO2 and water concern about toxics (dioxin, furans) Any non-combustible materials (inorganic such as metals, glass) remain as a solid, known as bottom ash (used as feedstock in cement and brick manufacturing) Fly ash APC (air pollution control residue) particulates, etc Needs high calorific v...
Powering Sustainable Future