Co-Firing of Refuse-Derived Fuel with Ekibastuz Coal in a Bubbling Fluidized Bed Reactor: Analysis of Emissions and Ash Characteristics

Converting municipal solid waste (MSW) into valuable feedstocks, such as refuse-derived fuel (RDF), is a sustainable method according to the concept of management hierarchy. A heterogeneous composition with good calorific value and lower emissions allows RDF be used for energy recovery purposes. We have earlier analyzed generation thermochemical characteristics MSW produced in Kazakhstan. This work aims study combustion terms ash evaluate possibility co-firing Ekibastuz coal. In particular, blended high bituminous coal (Ekibastuz coal) co-fired laboratory scale bubbling fluidized bed reactor (BFB) at temperature 850 °C. The tests samples were conducted under various proportions analyze flue gas compositions. Experiments carried presence material (sand), particles fed batch mode hot riser. BFB had height 760 mm internal diameter 48 mm. gaseous products by FTIR spectrometry (Gasmet Dx4000). Ash was examined XRD, XRF, SEM, PSD. results showed that content decreased SO2 28 ppm, while it negatively affected NOx release 1400 owing excess air. gases from different mineral transformations investigated discussed this study.