Empirical correlations have been derived by regression analysis to calculate the ash fusion temperatures under reducing conditions and the temperature of critical viscosity from the ash chemical composition. The data-base used in this work includes about 300 ash samples from coals of different sources and biomasses. The standard deviation, σ, for these equations are generally about 45-80 °C. These fall within the experimental errors of the measurements. These correlations: (1) provide a tool for calculating the thermal properties of the ash from its chemical composition; (2) provide a method to predict the effect of adding minerals (such as CaO) normally used to modify the slag behaviour.
|Autori interni:||SEGGIANI, MAURIZIA|
|Titolo:||Empirical correlations of the ash fusion temperatures and temperature of critical viscosity for coal and biomass ashes|
|Anno del prodotto:||1999|
|Digital Object Identifier (DOI):||10.1016/S0016-2361(99)00031-9|
|Appare nelle tipologie:||1.1 Articolo in rivista|