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Experiments were carried out in a pilot scale CFB reactor with Meat and Bone Meal (MBM) blended with three coals. MBM has high Cl content, which produces fouling and corrosion in superheaters. Coal ash contains protective elements (Al, Si and S) that are able to trap alkalies, and the HCl that is released does not condense on superheaters. The goal of the study was to select the most protective coal...
Biomass fuels often contain higher concentrations of easily vaporisable alkalis and chlorine than do coal and peat. The more vaporisable the alkalis or chlorine compounds the higher is the risk for ash-related problems. The presence of certain elements may reduce or remove these problems. This work shows how co-combusting of different biomass fuels in a fluidised bed boiler can result in useful interactions...
Chlorine-containing fuels tend to form corrosive deposits on the heat transfer surfaces of boiler furnaces. High risk chlorine compounds are of type MCl, where M is Na or K. Experiments were performed with an electrically stabilised 20kW bubbling bed reactor to determine the concentrations of Cl compounds in deposits and fine fly ash. The fuels of interest were fir bark and agricultural waste, fir...
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