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Burnout synergic or inhibiting effects in combustion of coal-sawdust blends
Efectos sinérgicos o inhibitorios en la combustión de mezclas de carbón y aserrín
Keywords:
Coal-biomass co-firing, Biomass, Coal, DTG (en)Co-combustión carbón-biomasa, Biomasa, Carbón, DTG (es)
The co-firing of coal and biomass was studied using DTG assays. Blends of coal of different ranks and pine charcoal (obtained through pyrolysis of biomass at 1000oC) were prepared. Combustion profiles and characteristic temperatures (IT, PT and BT) were obtained and compared. To detect deviations, the experimental burnout curves for each blend were compared with weighted averages calculated from the conversion profiles obtained for the individual fuel samples and the blend composition. Positive and negative deviations were obtained which can be predicted from the differences in the reactivity of the blend components and their relative proportions.
Se estudia la combustión de mezclas de carbones de diferente rango con carbonizados de pino (pirolizados a 1000oC) mediante ensayos DTG. Se registraron perfiles de combustión y temperaturas características (IT, PT y BT). Para detector desviaciones en el quemado de las mezclas, se compararon las curvas experimentales de conversión con aquellas obtenidas a partir del promedio ponderado calculado a partir de la conversión de los combustibles individuales y la composición de la mezcla. Estos ensayos revelaron que existen tanto desviaciones positivas como negativas en la conversión. Los factores clave en la predicción de estas desviaciones corresponden a las diferencias de reactividad entre los componentes de la mezcla y su proporción relativa.
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References
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Copyright (c) 2014 Claudia Ulloa, Ximena García
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