Abstract

Environmental aspects related to the co-firing of pulverized coal and RDF (refuse derived fuel) in a slag forming combustor have been investigated with regard to specific combustion parameters and fuel type. Three classes of organic micropollutants have been considered: PCDD (polychlorodibenzodioxins), PCDF (polychlorodibenzofurans) and PAH (polycyclic aromatic hydrocarbons). The emissions from coal/RDF combustion (40% RDF) have been compared with those from the plant fired with pulverized coal alone. In order to follow the thermal and oxidative history of the investigated organic compounds, samples of flue gases were collected at the exit of the slagging combustor but before the boiler entrance, and at the boiler outlet stack.

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