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The release of inorganic elements, mainly K, Na, Zn, Pb, S, and Cl, from a number of well-characterized biofuels (wood chips, bark, waste wood, and straw) was quantified as a function of temperature in a lab-scale fixed-bed reactor, and as a function of residence time in a lab-scale entrained flow reactor. The fuels were characterized by use of wet chemical analysis, and also by advanced techniques:...
The behaviour of the mineral matter in a fuel may crucially affect the availability of a boiler when the fuel is fired. The ash may cause severe problems in the flue gas channel in forms of fireside deposits on heat exchangers. These deposits lower the efficiency of the boiler and cause in the most severe cases an unscheduled shutdown.In this paper we report results from a study where the ash behaviour...
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